CN109502914B - Sewage treatment system for treating biogas slurry by using chlorella - Google Patents
Sewage treatment system for treating biogas slurry by using chlorella Download PDFInfo
- Publication number
- CN109502914B CN109502914B CN201811582772.5A CN201811582772A CN109502914B CN 109502914 B CN109502914 B CN 109502914B CN 201811582772 A CN201811582772 A CN 201811582772A CN 109502914 B CN109502914 B CN 109502914B
- Authority
- CN
- China
- Prior art keywords
- chlorella
- tank
- unit
- biogas slurry
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 241000195649 Chlorella <Chlorellales> Species 0.000 title claims abstract description 148
- 239000002002 slurry Substances 0.000 title claims abstract description 111
- 239000010865 sewage Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 claims abstract description 28
- 238000005189 flocculation Methods 0.000 claims abstract description 25
- 230000016615 flocculation Effects 0.000 claims abstract description 25
- 238000000746 purification Methods 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 13
- 239000006228 supernatant Substances 0.000 claims abstract description 13
- 239000002351 wastewater Substances 0.000 claims abstract description 11
- 210000003608 fece Anatomy 0.000 claims abstract description 6
- 239000010871 livestock manure Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 104
- 238000004062 sedimentation Methods 0.000 claims description 39
- 230000003647 oxidation Effects 0.000 claims description 30
- 238000007254 oxidation reaction Methods 0.000 claims description 30
- 230000001105 regulatory effect Effects 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 21
- 238000003860 storage Methods 0.000 claims description 16
- 238000000855 fermentation Methods 0.000 claims description 15
- 241000195493 Cryptophyta Species 0.000 claims description 13
- 239000010802 sludge Substances 0.000 claims description 7
- 239000000645 desinfectant Substances 0.000 claims description 3
- 239000005388 borosilicate glass Substances 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 14
- 239000003344 environmental pollutant Substances 0.000 description 11
- 231100000719 pollutant Toxicity 0.000 description 11
- 238000005273 aeration Methods 0.000 description 10
- 238000012258 culturing Methods 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 8
- 229910052698 phosphorus Inorganic materials 0.000 description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 7
- 241000282887 Suidae Species 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 235000015097 nutrients Nutrition 0.000 description 7
- 239000011574 phosphorus Substances 0.000 description 7
- 239000000047 product Substances 0.000 description 6
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000003306 harvesting Methods 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000001223 reverse osmosis Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 239000003674 animal food additive Substances 0.000 description 1
- 230000001651 autotrophic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000012136 culture method Methods 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910001410 inorganic ion Inorganic materials 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003307 slaughter Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/62—Carbon oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/84—Biological processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/322—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Biomedical Technology (AREA)
- Health & Medical Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Molecular Biology (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Abstract
The application relates to a sewage treatment system for treating biogas slurry by using chlorella, which comprises a biogas slurry pretreatment unit (1), a chlorella advanced treatment unit (2), a biogas purification unit (3), a pig farm (4) and a biogas digester (5), wherein biogas slurry is treated by the biogas slurry pretreatment unit (1) and then is discharged into the chlorella advanced treatment unit (2) and the biogas purification unit (3), the chlorella treated by the chlorella advanced treatment unit (2) can be used as pig feed, and pig manure wastewater generated by the pig farm (4) enters the biogas digester (5) and returns to the biogas slurry pretreatment unit (1) again to form a loop sewage treatment system. The system provided by the application combines the sewage treatment process with the chlorella cultivation, and the pretreated biogas slurry is treated by the chlorella, so that the biogas slurry can be discharged up to the standard, the chlorella can be recycled for pig cultivation, and the supernatant after the flocculation and precipitation of the chlorella can be used as a biological flocculant, so that the system has higher economic and ecological benefits.
Description
Technical Field
The application relates to the field of environmental engineering sewage treatment, in particular to a sewage treatment system for treating biogas slurry by using chlorella.
Background
Along with the development of large-scale cultivation and biogas engineering, the harmless treatment of biogas slurry is one of the important environmental problems to be solved currently and urgently. Biogas slurry is high-concentration organic wastewater and contains pollutants such as high-concentration nitrogen, phosphorus, organic matters and the like. The treatment of the biogas slurry is to remove pollutants in the biogas slurry by using physical, chemical, biological and other methods and adopting a certain process technology, so that the pollutants reach the standard and are discharged. The physicochemical treatment method is the main treatment method at present, and mainly comprises adsorbent adsorption, MBR technology, SBR technology, reverse osmosis technology, electrode electrolytic treatment technology and the like; and a microorganism treatment method is also provided, namely, the characteristics of microorganisms for absorbing nutrient substances such as nitrogen, phosphorus and the like in the growth process are utilized to purify biogas slurry.
The MBR technology combines a biochemical treatment technology and a membrane separation technology, utilizes a micropore interception technology to intercept and retain activated sludge in a reactor, improves the purification effect of wastewater, has high process load and stable water output, but has the problems of membrane pollution and high energy consumption.
The reverse osmosis technology utilizes a special permeable membrane to separate substances in sewage, not only can concentrate biogas slurry, but also can use the obtained concentrated solution as an agricultural fertilizer, but the technology is only suitable for treating low-concentration biogas slurry, and the biogas slurry needs to be subjected to multi-step pretreatment, otherwise, a reverse osmosis membrane is blocked, and the technology does not fundamentally remove pollutants in the biogas slurry.
The SBR technology adopts an indirect aeration mode to remove pollutants in biogas slurry, is a high-efficiency pollutant removal technology, has the characteristics of stable and flexible treatment effect, but can degrade the biodegradability of the biogas slurry, has low removal level of COD and is not ideal for the treatment effect of anaerobic digestion liquid.
Although the traditional sewage treatment mode can achieve the aim of decontamination to a certain extent, the problems of unsatisfactory treatment effect and great treatment difficulty exist, and the biggest disadvantage is that nutrient resources in biogas slurry are not effectively utilized, so that serious waste of resources is caused. Therefore, development of a resource utilization method is needed, and not only can secondary utilization of biogas slurry nutrients be realized, but also the aim of water quality purification can be achieved.
Algae-treated wastewater pollution has been mentioned for a long time, but attention has been paid in recent years, and the algae-treated wastewater can utilize inorganic ions in the wastewater for self growth, and can purify biogas slurry while algae grows. Based on the method, the chlorella capable of carrying out photosynthesis autotrophy is adopted as algae, and the growth of the chlorella is utilized to reduce COD, N, P and other nutrient substances in the biogas slurry, and tail water can be safely discharged into the environment, so that the biogas slurry is purified; meanwhile, the chlorella discharged by the chlorella culture unit can be directly sold as a chlorella product for purifying water, and the collected chlorella slurry can also be used for raising pigs, so that the method has certain economic and social benefits.
Patent document CN103396950a discloses a biogas slurry ecological purification method based on microalgae cultivation, which comprises the following steps: the biogas slurry pretreatment is carried out; (2) Domestication culture of autotrophic microalgae to obtain algae strains capable of rapidly growing in 70% -100% biogas slurry; (3) preparation of seed liquid; (4) a microalgae growth coupling biogas slurry purification method: the domesticated algae seeds are inoculated into an open type photobioreactor for culture after being expanded and cultivated, and the chlorella biomass growing at high density is obtained by adopting optimization methods such as a semi-continuous culture method, fed-batch culture and the like, and biogas slurry is purified; (5) biochemical wall breaking of microalgae cells: introducing microalgae cells into a biochemical wall-breaking tank, and putting freshwater fish into the tank to obtain wall-broken algae slurry; and (6) harvesting microalgae cells and recycling biogas slurry. The method not only provides a method for purifying the biogas slurry, but also can recycle the harvested algae cells and the biogas slurry, realizes the ecological treatment of the biogas slurry, and generates economic and social benefits while improving the environment.
Patent document CN108485931a discloses a continuous treatment system for treating fermentation biogas slurry based on chlorella, which comprises a biogas slurry pretreatment unit, a chlorella culture unit and a chlorella harvesting unit, wherein the biogas slurry pretreatment unit comprises a fermentation tank, a biogas slurry regulating tank, a micro-electrolysis tank, a Fenton oxidation tank, a neutralization sedimentation tank and a decoloration biogas tank, the chlorella culture unit comprises a plurality of tubular photobioreactors, the reactors comprise three feed inlets which are respectively used for inputting chlorella culture solution, cleaning solution discharged by the decoloration biogas tank and gas, the chlorella harvesting unit comprises a centrifuge, the centrifuge is communicated with a discharge port of the tubular photobioreactor, and chlorella slurry and filter liquor purified by the chlorella are obtained after the centrifuge is treated. The pretreated biogas slurry is used for culturing chlorella, the chlorella photobioreactor can effectively treat fermented biogas slurry, and the treated biogas slurry can meet the water quality standard of farm irrigation by combining with artificial wetland treatment, and the cultured chlorella has remarkable economic value.
However, the application does not combine the traditional sewage treatment with the cultivation of the chlorella, the application utilizes the chlorella to quickly purify the water body, and simultaneously utilizes the supernatant after the flocculation of the chlorella as a biological flocculant for sewage treatment, thereby achieving the purpose of saving cost, more importantly, the pretreated biogas slurry is suitable for the cultivation of the chlorella, the chlorella product can be obtained while the biogas slurry is treated, the algae cultivation cost is lower, the cultivation condition and the method are simple, and the cultivated chlorella can be collected for being used as feed or directly sold as the chlorella product to obtain benefits.
Disclosure of Invention
The application aims to provide a sewage treatment system for treating biogas slurry by using chlorella, which effectively solves the problem that the biogas slurry is difficult to treat by combining the traditional sewage treatment with the culture of chlorella.
The application realizes the aim by adopting the following technical scheme:
the utility model provides an utilize sewage treatment system of chlorella treatment marsh liquid, includes marsh liquid pretreatment unit, chlorella advanced treatment unit, marsh gas purification unit, pig farm and methane-generating pit, marsh liquid is discharged to chlorella advanced treatment unit and marsh gas purification unit after the marsh liquid pretreatment unit handles, the chlorella after the chlorella advanced treatment unit handles can be used as the fodder of raising pigs, pig farm produces pig manure waste water and gets back to marsh liquid pretreatment unit again and form return circuit sewage treatment system.
Further, the biogas slurry pretreatment unit sequentially comprises a deep anaerobic fermentation tank, a primary surface contact oxidation tank, a secondary surface contact oxidation tank, a sedimentation tank and an adjusting tank according to the process sequence; the first-stage surface contact oxidation tank is provided with three feed inlets, two feed inlets of the three feed inlets are respectively connected with a biogas slurry outlet of the deep anaerobic fermentation tank and a sludge outlet of the sedimentation tank for backflow, and the third feed inlet is filled with water; the regulating tank is provided with a water-passing feed inlet.
Further, the chlorella advanced treatment unit sequentially comprises a first chlorella culture unit, a flocculation sedimentation tank and a chlorella slurry storage tank according to the process sequence; the feed inlet of the first chlorella culture unit is connected with the regulating tank; and the supernatant of the algae liquid in the flocculation sedimentation tank flows back to the sedimentation tank.
Further, the primary surface contact oxidation tank and the secondary surface contact oxidation tank are connected with a blower.
Further, the biogas purification unit comprises a second chlorella culture unit and a condenser, wherein the second chlorella culture unit comprises a discharge port and three feed inlets, the discharge port is connected with the condenser to discharge biogas, and the three feed inlets are respectively connected with the biogas digester, the deep anaerobic fermentation tank and the regulating tank.
Further, sewage treatment system includes the return water unit, the return water unit includes play pond and tank, play water pond includes a feed inlet and a discharge gate, flocculation sedimentation tank is connected to the feed inlet, the discharge gate is connected to the tank.
Further, the water storage tank is respectively connected with the primary surface contact oxidation tank and the regulating tank and is used as a water source of the primary surface contact oxidation tank and the regulating tank.
Further, the water outlet pool is connected with a disinfectant storage pool, and the water outlet pool is provided with a water outlet for water outlet.
Further, the first chlorella culture unit and the second chlorella culture unit as chlorella culture units sequentially comprise a circulating tank, a circulating water pump and a culture pipeline according to the process sequence, wherein the circulating tank is provided with two feed inlets and two discharge outlets, the two feed inlets are respectively connected with the culture pipeline and a water inlet pipe, and the two discharge outlets are respectively connected with the circulating water pump and a water outlet pipe; the other end of the water inlet pipe is connected with the regulating tank, and the other end of the water outlet pipe is connected with the flocculation sedimentation tank; the culture pipeline comprises a plurality of tubular photobioreactors which are connected end to end; the culture pipeline is characterized in that an air inlet pipe with a downward opening direction is arranged below the culture pipeline, and an air outlet pipe with a downward opening direction is further arranged above the culture pipeline.
Further, the pipeline that the chlorella cultivation unit includes is provided with the valve, specifically includes seven valves, is first valve, second valve, third valve, fourth valve, fifth valve, sixth valve and seventh valve respectively, first valve sets up in circulation tank and cultivation pipeline junction, the second valve sets up on the inlet tube, the third valve sets up on the outlet pipe, fourth valve and fifth valve set up on circulation tank and circulating water pump's connecting tube, the fourth valve is close to the circulation tank, the fifth valve is close to circulating water pump, the sixth valve sets up in circulating water pump and cultivation pipeline junction, the seventh valve sets up in the intake pipe.
Compared with the prior art, the application has the beneficial effects that:
1. by combining traditional sewage treatment with the culture of chlorella, the chlorella can quickly purify water, and meanwhile, the supernatant after the flocculation of the chlorella is used as a biological flocculant for sewage treatment, so that the aim of saving cost is achieved, more importantly, the pretreated biogas slurry is suitable for the culture of the chlorella, the chlorella product can be obtained while the biogas slurry is treated, the culture cost of the algae is lower, the culture condition and the method are simple, and the cultured chlorella can be collected and used as feed or directly sold as the chlorella product to obtain benefits;
2. the chlorella purifying unit can remove CO in the marsh gas 2 Increase CH 4 Content, so that high-quality biogas can be obtained;
3. the pretreated biogas slurry is designed to be used as a nutrient source for the growth of the chlorella, so that the efficiency of utilizing the biogas slurry by the chlorella can be improved, the biogas slurry treatment time is shortened, and the rapid growth of the chlorella is promoted.
Drawings
FIG. 1 is a flow chart of the present application;
FIG. 2 is a layout diagram of a Chlorella culture unit according to the present application.
Detailed Description
The application is further illustrated by the following examples.
The utility model provides an utilize sewage treatment system of chlorella treatment marsh liquid, includes marsh liquid pretreatment unit 1, chlorella advanced treatment unit 2, marsh gas purification unit 3, pig farm 4 and methane-generating pit 5, marsh liquid is passed through marsh liquid pretreatment unit 1 handles the back and is discharged to chlorella advanced treatment unit 2 and marsh gas purification unit 3, chlorella advanced treatment unit 2 treated chlorella can be used as the fodder of raising pigs, pig farm 4 produces pig manure waste water and gets back to marsh liquid pretreatment unit 1 again and form return circuit sewage treatment system.
The biogas slurry pretreatment unit 1 sequentially comprises a deep anaerobic fermentation tank 11, a primary surface contact oxidation tank 12, a secondary surface contact oxidation tank 13, a sedimentation tank 14 and an adjusting tank 15 according to the process sequence; wherein, the primary surface contact oxidation tank 12 is provided with three feed inlets, two feed inlets of the three feed inlets are respectively connected with a biogas slurry discharge outlet of the deep anaerobic fermentation tank 11 and a sludge discharge outlet of the sedimentation tank 14 for backflow, and the third feed inlet is filled with water; the regulating tank 15 is provided with a water-passing feed inlet; the primary surface contact oxidation tank 12 and the secondary surface contact oxidation tank 13 are also connected with a blower 16 for bubbling aeration.
The chlorella advanced treatment unit 2 sequentially comprises a second chlorella culture unit 31, a flocculation sedimentation tank 22 and a chlorella slurry storage tank 23 according to the process sequence; the feed inlet of the second chlorella culture unit 31 is connected with the regulating tank 15; the algae liquid supernatant in the flocculation sedimentation tank 22 flows back to the sedimentation tank 14, and the rest part is introduced into the pig farm 4 through a chlorella slurry storage tank 23 to be used as feed; further, the first and second chlorella cultivation units 21 and 31 may directly discharge a part of the chlorella for sale as a product.
The biogas purification unit 3 comprises a second chlorella cultivation unit 31 and a condenser 32, the second chlorella cultivation unitThe raising unit 31 comprises a discharge hole and three feed inlets, wherein the discharge hole discharges biogas, and the three feed inlets are respectively connected with the biogas digester 5, the deep anaerobic fermentation tank 11 and the regulating tank 15; the methane tank 5 is filled with methane, but CH 4 The concentration is low, after entering the biogas purification unit 3, the chlorella is utilized to purify the biogas, and CO in the biogas is absorbed 2 The impurity gas, the marsh gas that the discharge gate discharged is discharged and discharged after being condensed to condenser 32.
As a comparison means, the sewage treatment system comprises a water return unit 6, the water return unit 6 comprises a water outlet tank 61 and a water storage tank 62, the water outlet tank 61 comprises a feed inlet and a discharge outlet, the feed inlet is connected with the flocculation sedimentation tank 22, the discharge outlet is connected to the water storage tank 62, the water storage tank 62 is respectively connected with the primary surface contact oxidation tank 12 and the regulating tank 15 and serves as a water source of the primary surface contact oxidation tank 12 and the regulating tank 15, and the treated water is used as a water source for the system, so that the water recycling is realized.
As a comparison means, the water outlet tank 61 is connected with a disinfectant pool 611 for disinfecting the water in the water outlet tank 61; the water outlet tank 61 is also provided with a water outlet for water.
Further, in the sewage treatment system for treating biogas slurry by using chlorella, the first chlorella culturing unit 21 and the second chlorella culturing unit 31 as chlorella culturing units sequentially comprise a circulating tank 211, a circulating water pump 212 and a culturing pipeline 213 according to the process sequence, wherein the circulating tank 211 is provided with two feeding ports and two discharging ports, the two feeding ports are respectively connected with the culturing pipeline 213 and a water inlet pipe 214, and the two discharging ports are respectively connected with the circulating water pump 212 and a water outlet pipe 215; the other end of the water inlet pipe 214 is connected with the regulating tank 15, and the other end of the water outlet pipe 215 is connected with the flocculation sedimentation tank 22; the culture pipeline 213 comprises a plurality of tubular photobioreactors which are connected end to end; an air inlet pipe 216 with a downward opening direction is arranged below the culture pipeline 213, and an air outlet pipe 217 with a downward opening direction is also arranged above the culture pipeline 213.
The pipeline can be provided with valves for controlling the culture of the chlorella, and the chlorella culture device specifically comprises seven valves, namely a first valve 10, a second valve 20, a third valve 30, a fourth valve 40, a fifth valve 50, a sixth valve 60 and a seventh valve 70, wherein the first valve 10 is arranged at the joint of the circulating tank 211 and the culture pipeline 213, the second valve 20 is arranged on the water inlet pipe 214, the third valve 30 is arranged on the water outlet pipe 215, the fourth valve 40 and the fifth valve 50 are arranged on the connecting pipeline of the circulating tank 211 and the circulating water pump 212, the fourth valve 40 is close to the circulating tank 211, the fifth valve 50 is close to the circulating water pump 212, the sixth valve 60 is arranged at the joint of the circulating water pump 212 and the culture pipeline 213, and the seventh valve 70 is arranged on the air inlet pipe 216.
The sewage treatment system works in the following manner:
biogas slurry generated in the pig farm 4 is treated by the biogas slurry pretreatment unit 1 and then is discharged into the chlorella advanced treatment unit 2 and the biogas purification unit 3, and the chlorella in the biogas purification unit 3 uses CO in biogas as a nutrient source for the growth of the chlorella 2 As an external carbon source, the chlorella deep treatment unit 2 uses CO in a gas cylinder 2 As an external carbon source, the chlorella treated by the chlorella advanced treatment unit 2 can be collected and used as feed for raising pigs, and pig manure wastewater generated by the pig farm 4 enters the biogas digester 5 and returns to the biogas slurry pretreatment unit 1 again, so that the circulation of the system is realized.
The method comprises the following steps of:
the biogas slurry generated by the pig farm 4 is discharged into a deep anaerobic fermentation tank 11 for deep anaerobic fermentation, the fermented biogas slurry is discharged into a primary surface contact oxidation tank 12 for primary aeration treatment, the biogas slurry after primary aeration is discharged into a secondary surface contact oxidation tank 13 for secondary aeration, the biogas slurry after secondary aeration is discharged into a sedimentation tank 14, the secondary stage-by-stage aeration mode can remove pollutants in water and ensure the growth of activated sludge, a part of sludge generated by the sedimentation tank 14 is discharged into the primary surface contact oxidation tank 12 for secondary aeration treatment, the growth of the activated sludge is promoted more effectively, and simultaneously, the supernatant after sedimentation is discharged into an adjusting tank 15 for water quality and water quantity adjustment and is used as a nutrient source of chlorella; aeration heads are arranged at the bottoms of the primary surface contact oxidation tank 12 and the secondary contact oxidation tank and are connected with a blower 16 through aeration pipes;
the biogas slurry treated by the biogas slurry pretreatment unit 1 is discharged from the regulating tank 15 into the first chlorella culture unit 21 and the second chlorella culture unit 31, pollutants in the biogas slurry are taken as a nutrition source, the pollutants in the biogas slurry are removed through the growth of chlorella, the obtained chlorella and biogas slurry mixed solution is discharged into the flocculation sedimentation tank 22, one part of supernatant liquid obtained by flocculating and settling the chlorella and biogas slurry mixed solution is discharged into the water outlet tank 61, and the other part of supernatant liquid is discharged into the sedimentation tank 14, so that the sedimentation effect of the pretreated biogas slurry is improved by using flocculation active substances generated in the chlorella metabolic process; the chlorella slurry precipitated by the flocculation precipitation tank 22 is pumped into a chlorella slurry storage tank 23 for pig raising in a pig farm 4; the flocculation sedimentation tank 22 uses calcium hydroxide as a flocculant, the dosage is 0.5g/L, and the flocculation efficiency can reach 97%.
As a comparison means, the system also comprises a water return unit 6, wherein after the water in the water outlet tank 61 is disinfected, one part of the water is discharged into a natural water body, and the other part of the water is discharged into a water storage tank 62; the treated water stored in the water storage tank 62 can be discharged into the regulating tank 15 to regulate the water quality and water quantity of the biogas slurry treated water, can be used as dilution water for the primary surface contact oxidation tank 12, can also be used for daily water of the pig farm 4, and realizes water recycling.
Taking 4 biogas slurry in a pig farm as an example, the COD concentration of the biogas slurry is 39400mg/L, the ammonia nitrogen concentration is 1571.4mg/L, the total nitrogen concentration is 4407mg/L, the total phosphorus concentration is 185.4mg/L, and when the sewage treatment is operated, the biogas slurry in the biogas station is discharged into the deep anaerobic fermentation tank 11 for deep anaerobic fermentation, and the COD concentration is 12600mg/L, the ammonia nitrogen concentration is 824.4mg/L, the total nitrogen concentration is 3254mg/L and the total phosphorus concentration is 105mg/L. The fermented biogas slurry is diluted by adding water into the primary surface contact oxidation tank 12 for 6 times, is aerated for two days, is continuously discharged into the secondary contact oxidation tank again for two days, is then discharged into the sedimentation tank 14, and is discharged into a part of supernatant liquid of the flocculation sedimentation tank 22 to promote the sedimentation effect, wherein at the moment, the COD concentration of each index of the biogas slurry is 782mg/L, the ammonia nitrogen concentration is 22.1mg/L, the total nitrogen concentration is 36.09mg/L, the total phosphorus concentration is 12.31mg/L, and is discharged into the regulating tank 15. Pumping the biogas slurry in the regulating tank 15 into a circulation tank 211 by a pump, and uniformly mixing the biogas slurry and the chlorella liquid under the action of a circulating water pump 212 in a culture pipeline 213 which is inoculated with chlorella; the added biogas slurry and chlorella liquid have a volume ratio of 1:3, carbon dioxide is supplied during daytime, pollutants in the biogas slurry are removed through the growth of culturing chlorella for two days, COD is reduced to 20.51mg/L, ammonia nitrogen concentration is 0.283mg/L, total nitrogen concentration is 9.53mg/L, total phosphorus concentration is 0.28mg/L, chlorella concentration reaches 1030 ten thousand per mL from 450 ten thousand per mL, water quality reaches the primary standard of Integrated wastewater discharge Standard (GB 8978-1996), the chlorella mixed solution after reaching the treatment standard is discharged into a flocculation sedimentation tank 22, after flocculation sedimentation, a part of supernatant in the flocculation sedimentation tank 22 is discharged into a water outlet tank 61, the other part of supernatant is discharged into a sedimentation tank 14 to improve the sedimentation effect of pretreated biogas slurry, and the chlorella slurry after sedimentation in the flocculation sedimentation tank 22 is pumped into a chlorella slurry 23 for pig raising pigs in a pig farm 4. In actual operation, the chlorella is used as a feed additive, so that the slaughtering period of pigs fed by the feed is obviously shortened compared with that of pigs fed by the feed, and the quality of meat is greatly improved.
In the embodiment, after the first chlorella culture unit 21 is treated for two days, the removal rates of COD, ammonia nitrogen, total nitrogen and total phosphorus in the biogas slurry respectively reach 89%, 92%, 95% and 98%, and simultaneously the biogas CH treated by the second chlorella culture unit 31 4 The original 40 percent of the content is improved to 63 percent, and after condensation treatment, the water vapor in the marsh gas is further removed and CH is removed 4 The content reaches about 85 percent.
The specific operation mode of the first chlorella cultivation unit 21 includes: the second valve 20 is opened, biogas slurry in the regulating tank 15 is injected into the circulating tank 211 through the water inlet pipe 214, so that the culture pipeline 213 is filled with chlorella liquid with certain concentration, the second valve 20 and the third valve 30 arranged on the water inlet pipe 214 and the water outlet pipe 215 are closed, and the seventh valve 70 is opened to introduce CO 2 All other remaining valves are opened, the circulating water pump 212 is started, so that biogas slurry circularly flows in the circulating tank 211 and the culture pipeline 213, and CO is introduced under illumination 2 Under the condition of (a) and (b),the aim of removing pollutants is fulfilled by culturing chlorella;
setting CO in the culture pipeline 213 2 The air pressure of the inlet air is 0.3MPa, and the gas discharged from the air outlet pipe 217 is O generated by chlorella 2 ；
Wherein, the chlorella culture pipe 213 is made of high borosilicate glass, has a diameter of 10cm and a thickness of 0.5cm.
Through the embodiment, the problem that biogas slurry is difficult to treat is solved by combining the traditional sewage treatment with the culture of the chlorella, and meanwhile, the supernatant after the chlorella is cultured can be used as a flocculant for sewage treatment, so that the aim of saving cost is achieved.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (9)
1. A sewage treatment system for treating biogas slurry by using chlorella is characterized in that,
the pig manure pretreatment device comprises a biogas slurry pretreatment unit (1), a chlorella advanced treatment unit (2), a biogas purification unit (3), a pig farm (4) and a biogas digester (5), wherein biogas slurry is treated by the biogas slurry pretreatment unit (1) and then is discharged into the chlorella advanced treatment unit (2) and the biogas purification unit (3), chlorella treated by the chlorella advanced treatment unit (2) can be used as pig raising feed, and pig manure wastewater generated by the pig farm (4) enters the biogas digester (5) and returns to the biogas slurry pretreatment unit (1) again to form a loop sewage treatment system;
the biogas slurry pretreatment unit (1) sequentially comprises a deep anaerobic fermentation tank (11), a primary surface contact oxidation tank (12), a secondary surface contact oxidation tank (13), a sedimentation tank (14) and an adjusting tank (15) according to the process sequence; three feed inlets are formed in the primary surface contact oxidation pond (12), two of the three feed inlets are respectively connected with a biogas slurry outlet of the deep anaerobic fermentation tank (11) and a sludge outlet of the sedimentation pond (14) in a backflow mode, and the third feed inlet is filled with water; the regulating tank (15) is provided with a water-passing feed inlet;
the chlorella advanced treatment unit (2) comprises a first chlorella culture unit (21), wherein the first chlorella culture unit (21) comprises a culture pipeline (213), and the chlorella culture pipeline (213) is made of high borosilicate glass.
2. The sewage treatment system for treating biogas slurry by using chlorella according to claim 1, wherein,
the chlorella advanced treatment unit (2) sequentially comprises a first chlorella culture unit (21), a flocculation sedimentation tank (22) and a chlorella slurry storage tank (23) according to the process sequence; the feed inlet of the first chlorella culture unit (21) is connected with the regulating tank (15); and the supernatant of the algae liquid in the flocculation sedimentation tank (22) flows back to the sedimentation tank (14).
3. The sewage treatment system for treating biogas slurry by using chlorella according to claim 1, wherein,
the primary surface contact oxidation tank (12) and the secondary surface contact oxidation tank (13) are connected with a blower (16).
4. The sewage treatment system for treating biogas slurry by using chlorella according to claim 2, wherein,
the biogas purification unit (3) comprises a second chlorella culture unit (31) and a condenser (32), wherein the second chlorella culture unit (31) comprises a discharge hole and three feed inlets, the discharge hole is connected with the condenser (32) to discharge biogas, and the three feed inlets are respectively connected with the biogas digester (5), the deep anaerobic fermentation tank (11) and the regulating tank (15).
5. The sewage treatment system for treating biogas slurry by using chlorella according to claim 2, wherein,
the sewage treatment system comprises a water return unit (6), the water return unit (6) comprises a water outlet tank (61) and a water storage tank (62), the water outlet tank (61) comprises a feed inlet and a discharge outlet, the feed inlet is connected with a flocculation sedimentation tank (22), and the discharge outlet is connected to the water storage tank (62).
6. The sewage treatment system for treating biogas slurry by using chlorella according to claim 5, wherein,
the water storage tank (62) is respectively connected with the primary surface contact oxidation tank (12) and the regulating tank (15) and is used as a water source of the primary surface contact oxidation tank (12) and the regulating tank (15).
7. The sewage treatment system for treating biogas slurry by using chlorella according to claim 5, wherein,
the water outlet tank (61) is connected with a disinfectant storage tank (611), and the water outlet tank (61) is provided with a water outlet for water.
8. The sewage treatment system for treating biogas slurry by using chlorella according to claim 4, wherein,
the first chlorella culture unit (21) and the second chlorella culture unit (31) are used as chlorella culture units, wherein the first chlorella culture unit (21) sequentially comprises a circulating tank (211), a circulating water pump (212) and a culture pipeline (213) according to the process sequence, the circulating tank (211) is provided with two feed inlets and two discharge outlets, the two feed inlets are respectively connected with the culture pipeline (213) and a water inlet pipe (214), and the two discharge outlets are respectively connected with the circulating water pump (212) and a water outlet pipe (215); the other end of the water inlet pipe (214) is connected with the regulating tank (15), and the other end of the water outlet pipe (215) is connected with the flocculation sedimentation tank (22); the culture pipeline (213) comprises a plurality of tubular photobioreactors which are connected end to end; an air inlet pipe (216) with a downward opening direction is arranged below the culture pipeline (213), and an air outlet pipe (217) with an upward opening direction is also arranged above the culture pipeline (213).
9. The sewage treatment system for treating biogas slurry by using chlorella according to claim 8, wherein,
the utility model provides a chlorella cultivation unit includes be provided with the valve on the pipeline that the unit includes, specifically includes seven valves, is first valve (10), second valve (20), third valve (30), fourth valve (40), fifth valve (50), sixth valve (60) and seventh valve (70) respectively, first valve (10) set up in circulation tank (211) and cultivation pipeline (213) junction, second valve (20) set up on inlet tube (214), third valve (30) set up on outlet pipe (215), fourth valve (40) and fifth valve (50) set up on the connecting tube of circulation tank (211) and circulating water pump (212), fourth valve (40) are close to circulation tank (211), fifth valve (50) are close to circulating water pump (212), sixth valve (60) set up in circulation water pump (212) and cultivation pipeline (213) junction, seventh valve (70) set up on intake pipe (216).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811582772.5A CN109502914B (en) | 2018-12-24 | 2018-12-24 | Sewage treatment system for treating biogas slurry by using chlorella |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811582772.5A CN109502914B (en) | 2018-12-24 | 2018-12-24 | Sewage treatment system for treating biogas slurry by using chlorella |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109502914A CN109502914A (en) | 2019-03-22 |
| CN109502914B true CN109502914B (en) | 2023-10-31 |
Family
ID=65754361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811582772.5A Active CN109502914B (en) | 2018-12-24 | 2018-12-24 | Sewage treatment system for treating biogas slurry by using chlorella |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109502914B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112280683A (en) * | 2020-11-03 | 2021-01-29 | 东台市赐百年生物工程有限公司 | Microalgae cultivation method based on three energies |
| CN112777879A (en) * | 2021-02-01 | 2021-05-11 | 瀚蓝生物环保科技有限公司 | Circulating system for biogas slurry purification ecology and control method |
| CN112694228B (en) * | 2021-02-06 | 2022-02-18 | 江西正合生态农业有限公司 | Biogas slurry purification method based on bacterial-algae symbiosis |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993006050A1 (en) * | 1991-09-20 | 1993-04-01 | Space Biospheres Venture | Waste-water treatment system |
| RU2005789C1 (en) * | 1990-06-26 | 1994-01-15 | Всероссийский институт электрофикации сельского хозяйства | Method for cleaning animal farm effluents and production of biomass |
| DE102005055310A1 (en) * | 2005-11-21 | 2007-05-24 | Hamm, Hubert, Dipl.-Ing. | Preparing fermentation residue, useful in e.g. fish culture, comprises separating solid, post-fermenting, treating anaerobic discharge, separating biomass, post-purifying, adding mineral salt, concentrating and producing carbon dioxide |
| CN102161550A (en) * | 2011-01-13 | 2011-08-24 | 蔡志武 | Method for producing feed additive from livestock and poultry breeding wastewater and purifying breeding wastewater to reclaimed water |
| WO2012153174A2 (en) * | 2011-05-06 | 2012-11-15 | Ariel-University Research And Development Company, Ltd. | Wastewater treatment method and device |
| CN103396950A (en) * | 2013-08-09 | 2013-11-20 | 烟台大学 | Biogas slurry ecological purification method based on microalgae cultivation |
| WO2014124500A1 (en) * | 2013-02-18 | 2014-08-21 | Crc Care Pty Ltd | A system for processing organic waste |
| CN105110567A (en) * | 2015-09-16 | 2015-12-02 | 广东石油化工学院 | Process for advanced treatment of southern large-scale swine wastewater |
| CN105754860A (en) * | 2016-03-31 | 2016-07-13 | 湖南大学 | Method for efficiently purifying biogas slurry in pig farm through composite microalgae |
| CN205687757U (en) * | 2016-06-20 | 2016-11-16 | 山东民和生物科技股份有限公司 | A kind of multiple stage circulation cultivating excrement dirty utilizes system |
| CN106348451A (en) * | 2016-09-29 | 2017-01-25 | 湖南大学 | Continuous system for processing high ammonia-nitrogen pig raising biogas slurry by combining microalgae and aquatic plants |
| CN107055946A (en) * | 2017-03-09 | 2017-08-18 | 中国科学院水生生物研究所 | A kind of method that utilization chlorella purifies pig farm fermentation waste water |
| CN107082535A (en) * | 2017-05-31 | 2017-08-22 | 安徽永志环能科技有限公司 | Livestock and poultry cultivation night soil biological treatment utilization process |
| CN107698119A (en) * | 2017-09-17 | 2018-02-16 | 湖南山河美生物环保科技股份有限公司 | A kind of administering method for realizing the discharge of piggery waste recycling no pollution |
| CN207347251U (en) * | 2017-10-13 | 2018-05-11 | 余文斌 | A kind of discarded object cooperates with processing unit |
| CN108545884A (en) * | 2018-03-28 | 2018-09-18 | 安徽永志环能科技有限公司 | Swine manure wastewater processing method |
| CN209383619U (en) * | 2018-12-24 | 2019-09-13 | 江西洁地环境治理生态科技有限公司 | A kind of sewage disposal system using chlorella processing biogas slurry |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10900013B2 (en) * | 2014-10-22 | 2021-01-26 | Gsr Solutions, Llc | Systems and methods of producing compositions from the nutrients recovered from waste streams |
-
2018
- 2018-12-24 CN CN201811582772.5A patent/CN109502914B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2005789C1 (en) * | 1990-06-26 | 1994-01-15 | Всероссийский институт электрофикации сельского хозяйства | Method for cleaning animal farm effluents and production of biomass |
| WO1993006050A1 (en) * | 1991-09-20 | 1993-04-01 | Space Biospheres Venture | Waste-water treatment system |
| DE102005055310A1 (en) * | 2005-11-21 | 2007-05-24 | Hamm, Hubert, Dipl.-Ing. | Preparing fermentation residue, useful in e.g. fish culture, comprises separating solid, post-fermenting, treating anaerobic discharge, separating biomass, post-purifying, adding mineral salt, concentrating and producing carbon dioxide |
| CN102161550A (en) * | 2011-01-13 | 2011-08-24 | 蔡志武 | Method for producing feed additive from livestock and poultry breeding wastewater and purifying breeding wastewater to reclaimed water |
| WO2012153174A2 (en) * | 2011-05-06 | 2012-11-15 | Ariel-University Research And Development Company, Ltd. | Wastewater treatment method and device |
| WO2014124500A1 (en) * | 2013-02-18 | 2014-08-21 | Crc Care Pty Ltd | A system for processing organic waste |
| CN103396950A (en) * | 2013-08-09 | 2013-11-20 | 烟台大学 | Biogas slurry ecological purification method based on microalgae cultivation |
| CN105110567A (en) * | 2015-09-16 | 2015-12-02 | 广东石油化工学院 | Process for advanced treatment of southern large-scale swine wastewater |
| CN105754860A (en) * | 2016-03-31 | 2016-07-13 | 湖南大学 | Method for efficiently purifying biogas slurry in pig farm through composite microalgae |
| CN205687757U (en) * | 2016-06-20 | 2016-11-16 | 山东民和生物科技股份有限公司 | A kind of multiple stage circulation cultivating excrement dirty utilizes system |
| CN106348451A (en) * | 2016-09-29 | 2017-01-25 | 湖南大学 | Continuous system for processing high ammonia-nitrogen pig raising biogas slurry by combining microalgae and aquatic plants |
| CN107055946A (en) * | 2017-03-09 | 2017-08-18 | 中国科学院水生生物研究所 | A kind of method that utilization chlorella purifies pig farm fermentation waste water |
| CN107082535A (en) * | 2017-05-31 | 2017-08-22 | 安徽永志环能科技有限公司 | Livestock and poultry cultivation night soil biological treatment utilization process |
| CN107698119A (en) * | 2017-09-17 | 2018-02-16 | 湖南山河美生物环保科技股份有限公司 | A kind of administering method for realizing the discharge of piggery waste recycling no pollution |
| CN207347251U (en) * | 2017-10-13 | 2018-05-11 | 余文斌 | A kind of discarded object cooperates with processing unit |
| CN108545884A (en) * | 2018-03-28 | 2018-09-18 | 安徽永志环能科技有限公司 | Swine manure wastewater processing method |
| CN209383619U (en) * | 2018-12-24 | 2019-09-13 | 江西洁地环境治理生态科技有限公司 | A kind of sewage disposal system using chlorella processing biogas slurry |
Non-Patent Citations (2)
| Title |
|---|
| 养殖场厌氧发酵沼液处理研究进展;闫园园等;中国沼气(第5期);全文 * |
| 畜禽粪污沼液氮磷处理技术研究进展;李恒;张洛宁;余依凡;高嘉豪;;水处理技术(第08期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109502914A (en) | 2019-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103396950B (en) | A kind of natural pond liquid ecological purification method based on both culturing microalgae | |
| US10533148B2 (en) | Membrane photobioreactor for treating nitrogen and phosphorus that are out of limits in biogas slurry and treating method thereof | |
| CN108975614B (en) | Operation method of biogas slurry ecological treatment culture system | |
| WO2017173708A1 (en) | Integrated reactor for biological treatment of livestock farm wastewater | |
| CN106430820B (en) | A kind of biological treatment device and its technique of high ammonia nitrogen pig raising biogas slurry | |
| CN204848572U (en) | Birds is raised and grows effluent treatment plant | |
| CN110627316B (en) | Breeding wastewater treatment process | |
| CN106396112A (en) | Composite system used for purifying high ammonia nitrogen pig breeding biogas slurry via algae-bacterium symbiosis/ecological floating bed combined technology | |
| CN105621783A (en) | Method for removing nitrogen and phosphorus in sewage with sequencing batch microalgae reactor | |
| CN105152466A (en) | Method for treating aquatic bird breeding wastewater by using microalgae | |
| CN105417877A (en) | Novel livestock wastewater treatment process | |
| CN109502914B (en) | Sewage treatment system for treating biogas slurry by using chlorella | |
| CN203307182U (en) | Resource utilization and regenerative recycling device of livestock and poultry breeding wastewater | |
| CN104250058B (en) | The comprehensive treatment method for wastewater of fowl droppings fermenting liquid production Water soluble fertilizer | |
| CN104926022A (en) | Method for reclaiming nutrient elements in hydrothermal liquidation waste water and equipment for using nutrient elements | |
| CN111170571B (en) | Liquid manure treatment process for livestock manure | |
| CN106348451B (en) | A kind of continuous system using microalgae and the high ammonia nitrogen pig raising biogas slurry of water plant Combined Treatment | |
| CN202658051U (en) | Aquaculture wastewater biochemical treatment system | |
| CN102659284B (en) | Regenerated papermaking wastewater treatment system and process | |
| CN209383619U (en) | A kind of sewage disposal system using chlorella processing biogas slurry | |
| CN210620525U (en) | Water-fertilizer co-production device for breeding manure | |
| US12060291B2 (en) | Method for treatment and resource utilization of acidic organic wastewater | |
| CN219752089U (en) | Resource continuous treatment system for purifying biogas slurry based on energy chlorella | |
| CN114605030B (en) | Method for recycling carbon-sink oxygen-release type cultivation sewage | |
| CN203333441U (en) | Resource utilization and treatment device of livestock and poultry breeding waste water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |