CN111704323A - High-efficient sewage treatment system of modularization integrated form - Google Patents
High-efficient sewage treatment system of modularization integrated form Download PDFInfo
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- CN111704323A CN111704323A CN202010636637.5A CN202010636637A CN111704323A CN 111704323 A CN111704323 A CN 111704323A CN 202010636637 A CN202010636637 A CN 202010636637A CN 111704323 A CN111704323 A CN 111704323A
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- 238000005273 aeration Methods 0.000 claims abstract description 61
- 239000010802 sludge Substances 0.000 claims abstract description 53
- 238000004062 sedimentation Methods 0.000 claims abstract description 45
- AHEWZZJEDQVLOP-UHFFFAOYSA-N monobromobimane Chemical compound BrCC1=C(C)C(=O)N2N1C(C)=C(C)C2=O AHEWZZJEDQVLOP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 230000003647 oxidation Effects 0.000 claims abstract description 30
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 30
- 238000006243 chemical reaction Methods 0.000 claims abstract description 25
- 230000001105 regulatory effect Effects 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 13
- 206010021143 Hypoxia Diseases 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
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- 238000003756 stirring Methods 0.000 claims description 2
- 238000004065 wastewater treatment Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 15
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 10
- 239000011574 phosphorus Substances 0.000 abstract description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 6
- 238000001914 filtration Methods 0.000 abstract description 6
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- 238000000034 method Methods 0.000 description 8
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- 241000894006 Bacteria Species 0.000 description 4
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- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
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- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
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- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
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Images
Classifications
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- 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
-
- 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
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- 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
- C02F3/308—Biological phosphorus removal
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a modularized integrated high-efficiency sewage treatment system which comprises an aeration regulating tank, an anaerobic tank, an anoxic tank, an MBBR aerobic tank, a contact oxidation tank, a secondary sedimentation tank, an aeration biological filter, a reaction sedimentation tank, a clean water tank, a sludge tank and an air compressor, wherein all the devices are correspondingly connected. According to the invention, various devices are integrated in one system, so that the separation of coarse slag, stable water quality regulation, anaerobic phosphorus removal, anoxic nitrogen removal, MBBR aerobic purification, contact oxidation, secondary precipitation, biological filtration and final precipitation of sewage are sequentially realized, and clear water is discharged; through carrying out modularization box integration with each equipment, finally realize the modularization integrated form structure through the pipe connection between a plurality of modularization boxes, showing the convenience that has improved transportation and installation under the prerequisite of guaranteeing the water treatment effect, especially be fit for as large-scale sewage treatment system in the well.
Description
Technical Field
The invention relates to a sewage treatment system, in particular to a modularized integrated high-efficiency sewage treatment system.
Background
The sewage treatment system is extremely widely applied, and the sewage treatment effect of the sewage treatment system determines the degree of pollution of sewage to the environment, and is closely related to the life of people.
Because the amount of sewage to be treated is larger and the treatment field is more and more centralized, the two aspects of whether the effluent cleanliness of the sewage treatment system reaches the standard and whether the equipment is convenient to transport and install are more and more important.
Traditional sewage treatment system, though all more advanced in the aspect of improving purification effect and integrated level, still there is great not enough on the whole, mainly embodies in two aspects: firstly, the water treatment effect is difficult to satisfy, because various water treatment equipment with different functions are not integrated more comprehensively and effectively, the effluent cleanliness is not ideal enough; secondly, the whole device is not very big but too scattered, or is integrated but too big because of too concentrated, and the two traditional sewage treatment systems are not very convenient for transportation and installation.
Disclosure of Invention
The invention aims to solve the problems and provide a modularized integrated high-efficiency sewage treatment system which has good water treatment effect and is convenient to transport and install.
The invention realizes the purpose through the following technical scheme:
a modularized integrated high-efficiency sewage treatment system comprises an aeration adjusting tank, an anaerobic tank, an anoxic tank, an MBBR aerobic tank, a contact oxidation tank, a secondary sedimentation tank, an aeration biological filter, a reaction sedimentation tank, a clean water tank, a sludge tank and an air compressor, wherein the water inlet of the aeration adjusting tank is the sewage inlet of the modularized integrated high-efficiency sewage treatment system, a grid channel is arranged at a position close to the water inlet of the aeration adjusting tank, a mechanical grid is arranged in the grid channel, a sewage lifting pump is arranged at the bottom of the aeration adjusting tank, the water outlet of the sewage lifting pump is communicated and connected with the water inlet end of the upper part of the anaerobic tank through a sewage pipe, the water outlet end of the lower part of the anaerobic tank is directly communicated and connected with the water inlet end of the lower part of the anoxic tank, the water outlet end of the upper part of the anoxic tank is communicated and connected, the water outlet end of the lower part of the MBBR aerobic pool is communicated and connected with the water inlet end of the lower part of the contact oxidation pool through a sewage pipe, the water outlet end of the upper part of the contact oxidation pool is communicated and connected with the water inlet end of the upper part of the secondary sedimentation pool through a water flow channel between the two, the water outlet end of the upper end of the secondary sedimentation pool is communicated and connected with the water inlet end of the upper end of the aeration biological filter pool through a sewage pipe, the water outlet end of the lower part of the aeration biological filter pool is communicated and connected with the water inlet end of the lower part of the reaction sedimentation pool, the water outlet end of the upper part of the reaction sedimentation pool is communicated and connected with the water inlet end of the upper part of the clean water pool, the water outlet end of the upper part of the clean water pool is the clean water outlet of the modularized integrated high, a sludge lifting pump is arranged at the bottom in the secondary sedimentation tank, a sludge outlet of the sludge lifting pump is respectively communicated and connected with a water inlet end of the anaerobic tank and an inlet of the sludge tank through a sludge pipe, a sludge lifting pump is arranged at the bottom in the reaction sedimentation tank, a sludge outlet of the sludge lifting pump is communicated and connected with an inlet of the sludge tank through a sludge pipe, a sludge concentration tank is arranged in the sludge tank, a sewage lifting pump is arranged at the bottom in the clear water tank, the water outlet of the sewage lifting pump is communicated and connected with the bottom of the biological aerated filter through a sewage pipe, the outlet of the air compressor is respectively communicated and connected with an aeration pipe at the bottom in the aeration regulating tank, a microporous aeration head at the bottom in the MBBR aerobic tank, a microporous aeration head at the bottom in the contact oxidation tank, a microporous aeration head at the bottom in the biological aerated filter and an aeration pipe at the bottom in the sludge concentration tank through air pipes; the anaerobism pond with the oxygen deficiency pond is all located in the first box, MBBR good oxygen pond is located in the second box, the contact oxidation pond with the secondary sedimentation tank is all located in the third box, the biological aerated filter the reaction sedimentation tank with the clean water basin is all located in the fourth box.
In the structure, the MBBR is a shorthand of 'Moving-Bed Biofilm Reactor', namely a Moving Bed Biofilm Reactor, is another novel Biofilm Reactor of leather which is valued by researchers in recent years, and is developed for solving the complex operations that a fixed Bed Reactor needs regular back flushing, a fluidized Bed needs to fluidize a carrier, a submerged biological filter is blocked and needs to clean a filter material and replace an aerator; the aeration adjusting tank, the anaerobic tank, the anoxic tank, the MBBR aerobic tank, the contact oxidation tank, the secondary sedimentation tank, the aeration biological filter, the reaction sedimentation tank, the clear water tank, the sludge tank and the air compressor are conventional water treatment equipment in the prior art, the invention is characterized in that the equipment is organically integrated to realize better sewage purification effect, meanwhile, the related equipment is effectively integrated to form a plurality of modularized box structures, and all the modularized box bodies are connected through pipelines, so that the purposes of convenient transportation and installation can be considered.
Preferably, in order to prevent sludge from depositing on the bottom of the regulating tank as much as possible, a sinking groove is arranged at a position far away from the water inlet of the aeration regulating tank, and the corresponding sewage lifting pump is arranged in the sinking groove.
Further, in order to avoid the bottom of mud deposit in anaerobism pond and oxygen deficiency pond to make anaerobism pond intake and backward flow mud, oxygen deficiency pond intake and mixed liquid mix more balancedly, the anaerobism pond with the agitator pump is installed respectively to the lower part in the oxygen deficiency pond.
The invention has the beneficial effects that:
the invention integrates the grid channel, the aeration adjusting tank, the anaerobic tank, the anoxic tank, the MBBR aerobic tank, the contact oxidation tank, the secondary sedimentation tank, the aeration biological filter, the reaction sedimentation tank, the clear water tank, the sludge tank and the air compressor into a system, so as to sequentially realize the coarse slag isolation, stable water quality adjustment, anaerobic hydrolysis, anoxic denitrification, MBBR aerobic purification, contact oxidation, secondary sedimentation, biological filtration and final sedimentation of sewage, discharge clear water, return part of sludge in the secondary sedimentation tank to the anaerobic tank to improve the dephosphorization reaction effect, return the sewage in the contact oxidation tank to the anoxic tank to improve the denitrification reaction effect, and has high effluent cleanliness, thereby being suitable for high-efficiency treatment of various types of sewage, reducing the pollution to the environment and being beneficial to environmental protection; through locating anaerobism pond and oxygen deficiency pond in the first box, good oxygen pond of MBBR is located in the second box, locate contact oxidation pond and secondary sedimentation tank in the third box, locate the aeration biological filter, reaction sedimentation tank and clean water basin locate the fourth box, aeration equalizing basin and sludge impoundment can build the capital construction simultaneously and also can form the box, finally realize the modularization integrated form structure through the pipe connection between a plurality of modularization boxes, can be better with each equipment concentrate reduce the parts so that transportation and installation, can avoid whole integration to make too much the problem that volume and quality are difficult to transportation and installation at a box again, especially be fit for as large-and-medium-sized sewage treatment system.
Drawings
FIG. 1 shows a modular integrated high-efficiency sewage treatment system according to the present invention
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
as shown in figure 1, the modularized integrated high-efficiency sewage treatment system comprises an aeration adjusting tank 5, an anaerobic tank 8, an anoxic tank 11, an MBBR aerobic tank 13, a contact oxidation tank 16, a secondary sedimentation tank 20, an aeration biological filter 21, a reaction sedimentation tank 24, a clean water tank 25, a sludge tank 27 and an air compressor 17, wherein a water inlet 1 of the aeration adjusting tank 5 is a sewage inlet of the modularized integrated high-efficiency sewage treatment system, a grid channel 2 is arranged in the aeration adjusting tank 5 and close to the water inlet 1, a mechanical grid is arranged in the grid channel 2, a sunken sink tank 6 is arranged in the aeration adjusting tank 5 and far away from the water inlet 1, a sewage lifting pump 7 is arranged at the bottom in the sink tank 6, and a water outlet of the sewage lifting pump 7 is communicated and connected with a water inlet end at the upper part of the anaerobic tank 8 through a sewage pipe (not marked in the figure and has the same size as or larger than a sewage pipe 12 in the figure), the water outlet end of the lower part of the anaerobic tank 8 is directly communicated and connected with the water inlet end of the lower part of the anoxic tank 11, the water outlet end of the upper part of the anoxic tank 11 is communicated and connected with the water inlet end of the upper part of the MBBR aerobic tank 13 through a sewage pipe (not marked in the figure, same as or larger than the sewage pipe 12 in the figure), the lower parts of the anaerobic tank 8 and the anoxic tank 11 are respectively provided with a stirring pump 29, the water outlet end of the lower part of the MBBR aerobic tank 13 is communicated and connected with the water inlet end of the lower part of the contact oxidation tank 16 through a sewage pipe (not marked in the figure, same as or larger than the sewage pipe 12 in the figure), the water outlet end of the upper part of the contact oxidation tank 16 is communicated and connected with the water inlet end of the upper part of the secondary sedimentation tank 20 through a water flow channel between the water outlet end and the water inlet end of the upper part of the secondary sedimentation tank, the water outlet end at the lower part of the aeration biological filter 21 is communicated and connected with the water inlet end at the lower part of the reaction sedimentation tank 24, the water outlet end at the upper part of the reaction sedimentation tank 24 is communicated and connected with the water inlet end at the upper part of the clean water tank 25, the water outlet end 26 at the upper part of the clean water tank 25 is the clean water outlet of the modularized integrated high-efficiency sewage treatment system, the bottom in the contact oxidation tank 16 is provided with a mixed liquid reflux pump 31, the water outlet of the mixed liquid reflux pump 31 is communicated and connected with the water inlet end of the anoxic tank 11 through a sewage pipe 12, the bottom in the secondary sedimentation tank 20 is provided with a sludge lifting pump 19, the sludge outlet of the sludge lifting pump 19 is respectively communicated and connected with the water inlet of the anaerobic tank 8 and the inlet of the sludge tank 27 through a sludge pipe 9, the bottom in the reaction sedimentation tank 24 is provided with two sludge lifting pumps 19, and, a sludge concentration tank 28 is arranged in the sludge tank 27, a sewage lifting pump 7 is arranged at the bottom in the clean water tank 25, the water outlet of the sewage lifting pump 7 is communicated and connected with the bottom of the biological aerated filter 21 through a sewage pipe (not marked in the figure and same as the sewage pipe 12 in the figure), and the outlets of two air compressors 17 are respectively communicated and connected with an aeration pipe 3 at the bottom in the aeration adjusting tank 5, a microporous aeration head 15 at the bottom in the MBBR aerobic tank 13, a microporous aeration head 15 at the bottom in the contact oxidation tank 16, a microporous aeration head 15 at the bottom in the biological aerated filter 21 and an aeration pipe 3 at the bottom in the sludge concentration tank 28 through an air pipe 4; the anaerobic tank 8 and the anoxic tank 11 are arranged in the first box body 10, the MBBR aerobic tank 13 is arranged in the second box body (not marked in the figure), the contact oxidation tank 16 and the secondary sedimentation tank 20 are arranged in the third box body 18, and the biological aerated filter 21, the reaction sedimentation tank 24 and the clean water tank 25 are arranged in the fourth box body 23.
Fig. 1 also shows the MBBR filler 14 in the MBBR aerobic tank 13, the ceramsite filter 22 in the biological aerated filter 21 (BAF for short), the anaerobic tank 8, the anoxic tank 11 and the elastic filler 30 in the contact oxidation tank 16.
As shown in fig. 1, the general process flow of sewage treatment by the modular integrated high-efficiency sewage treatment system of the present invention is as follows:
the sewage is collected by a pipe network and enters an aeration regulating reservoir 5, larger particles of impurities in the water are removed through a grid channel 2, then the quality and the quantity of the sewage are balanced in the aeration regulating reservoir 5, and the synchronous nitrification and denitrification functions are realized through pre-aeration; after the sewage is fully regulated and stabilized in the aeration regulating tank 5, the sewage is lifted to the anaerobic tank 8 by the sewage lifting pump 7 to be mixed and reacted with sludge flowing back from the secondary sedimentation tank 20 in the anaerobic tank 8, then the sewage flows into the anoxic tank 11 automatically, and the sewage and the mixed liquid flowing back from the contact oxidation tank 16 are mixed together, nitrate nitrogen in the mixed liquid is converted into nitrogen by using an organic carbon source in the anoxic tank 11 to overflow, and organic matters in the sewage are reduced; the effluent of the anoxic tank 11 automatically flows into an MBBR aerobic tank 13, and MBBR fillers 14 suspended in the MBBR aerobic tank 13 are micro ecological chains and can remove most of COD, BOD and ammonia nitrogen; then the sewage automatically flows into a contact oxidation tank 16 to be used as the supplement of an MBBR aerobic tank 13, and the completely converted nitrate nitrogen mixed liquid flows back to an anoxic tank 11 by using a sewage lifting pump 7; the effluent of the contact oxidation tank 16 automatically flows into a secondary sedimentation tank 20, the supernatant enters an aeration biological filter 21 for advanced treatment, most of the sinking sludge flows to a sludge lifting pump 19 and flows back to the anaerobic tank 8, and part of the residual sludge is discharged into a sludge tank 27 for digestion and degradation; the sewage is subjected to advanced treatment on indexes such as SS, COD, NH3-N and the like in the biological aerated filter 21, the effluent enters a standby reaction sedimentation tank 24, PAC and PAM are put in for dephosphorization, the sewage enters a clean water tank 25 for storage or recycling, finally the effluent is subjected to ultraviolet disinfection treatment and then is discharged after reaching the standard, and the sewage at the bottom in the clean water tank 25 is sent back to the biological aerated filter 21 by a corresponding sewage lifting pump 7 to be used as backwashing water for the biological aerated filter 21.
For a better understanding of the present invention, the structure and function of some of the devices are described in more detail below:
the grid channel 2 is arranged at the water inlet end of a treatment plant, and the original sewage firstly passes through the grid channel 2 to intercept larger suspended matters or floaters in the sewage, so that the load of subsequent treatment structures is reduced, and the subsequent treatment structures can normally run.
According to the sewage discharge rule and the requirement of the subsequent treatment structure on the stability of water quality and water quantity, the aeration regulating tank 5 is arranged to store the residual water quantity with large water quantity caused by the change of the sewage quantity, so that the peak load is reduced, the impact on the subsequent treatment system is reduced, the volume of the subsequent treatment structure is reduced, and the investment cost is saved.
An anaerobic tank 8: because the domestic sewage contains a large amount of long-chain organic matters which are difficult to decompose, such as fiber protein and the like, in the unit, the long-chain organic matters are preliminarily decomposed into the short-chain organic matters by anaerobic microorganism hydrolysis, and simultaneously, a large amount of biological enzymes are provided to provide preparation for the subsequent process unit to decompose the organic matters in the next step, which is favorable for aerobic treatment. In addition, the first stage anaerobic tank 8 mainly releases phosphorus, so that the concentration of the phosphorus in the sewage is increased, and soluble organic matters are absorbed by cells to ensure that BOD (biochemical oxygen demand) in the sewage is increased5The concentration is reduced; further NH3-N is partially removed by cell synthesis to make NH in wastewater3The N concentration decreases. But NO3The content of-N is not changed, so that the sewage enters the anaerobic tank 8 together with the sludge returned by the secondary sedimentation tank 20, the high-efficiency activated sludge can quickly adsorb soluble organic matters in the raw water and perform good hydrolysis action on refractory organic matters, and meanwhile, phosphorus in the sludge is effectively released under the anaerobic condition, the activity is improved, and the preparation is provided for the sludge under the aerobic condition to absorb a large amount of phosphorus.
An anoxic tank 11: in the anoxic tank 11, the denitrifying bacteria utilize organic matters in the sewage as carbon sources to carry a large amount of NO into the reflux mixed liquor3- -N and NO2Reduction of-N to N2Released to the air, hence BOD5The concentration continues to decrease, NOx--NThe concentration is greatly reduced and the change of phosphorus is small. The effluent of the anaerobic tank 8 automatically flows into the anoxic tank 11, and simultaneously enters into a backflow mixed liquor contacting the oxidation tank 16. Denitrifying bacteria in anoxic environment utilize organic pollutant in sewage as carbon source to reduce great amount of nitrate nitrogen in the returned mixed liquid into nitrogen to complete the denitrification process and BOD5The concentration decreases.
An MBBR aerobic tank 13: consists of a tank body, a filling material, an aeration system and the like. The cell is filled with MBBR packing 14. The microorganism is attached to the filler in the form of a biological film, and the inside of the filler is flocculent and grows in the water in a suspending way. Aerating at the bottom of the tank by using a microporous aeration head 15, wherein the oxygenated sewage submerges all the MBBR filler 14 and flows through the MBBR filler 14 at a certain speed. The MBBR packing 14 is full of biological films, sewage is contacted with the biological films, and the sewage is purified under the action of biological film microorganisms. The common Roots blower aeration system is characterized in that aeration is directly carried out under MBBR filler 14, and a biological membrane is impacted and stirred by ascending airflow to be separated and updated at an accelerated speed, so that the biological membrane always keeps better activity and can avoid blockage. As the sewage stays in the tank for a long time, nitrifying bacteria can live, organic matters can carry out nitration reaction, and ammonia nitrogen can be converted into micro nitrate and nitrite. The MBBR aerobic tank 13 is an aerobic section, and biomass and biological species in the reactor are improved by adding a certain amount of suspension carriers into the reactor, so that the treatment efficiency of the reactor is improved. The density of the MBBR filler 14 is close to that of water, so that the MBBR filler is completely mixed with the water during aeration, and the environment for microbial growth is three phases of gas, liquid and solid. The collision and shearing action of the carrier in water makes air bubbles finer, and the utilization rate of oxygen is increased. In addition, each carrier has different biological species inside and outside, anaerobic bacteria or facultative bacteria grow inside, and aerobic bacteria grow outside, so that each carrier is a micro-reactor, nitrification reaction and denitrification reaction exist simultaneously, and the treatment effect is improved.
The contact oxidation pond 16: the biological contact oxidation method is a biomembrane process between activated sludge process and biological filter, and is characterized by that the interior of the filter is equipped with filler, and the bottom of the filter is aerated to oxygenate the sewage, so that the sewage in the filter body is in flowing state, and can ensure that the sewage is fully contacted with filler immersed in the sewage. The part is mainly used for supplementing an MBBR aerobic tank 13, a mixed liquid reflux pump, namely an adopted sewage lifting pump 7, is arranged, sewage containing nitrate nitrogen flows back to an anoxic tank 11, and a carbon source in raw water is fully utilized for denitrification.
Biological aerated filter 21: the structure is characterized in that a biomembrane method treatment structure with an activated sludge method is adopted, a ceramsite filter material 22 with the diameter of several millimeters is placed in a tank to be used as a biological group supporting medium, and microorganisms grow on the supporting medium through aeration of a microporous aeration head 15 arranged at the bottom of the tank. Besides mainly relying on the biological membrane on the ceramsite filter material 22, the purified sewage still has suspended biomass with a certain concentration similar to that of activated sludge, and has a certain degradation effect on the sewage. The water flow adopts a water-gas composite ascending or convection flow, and the backwashing is carried out regularly. The ceramsite filter material 22 used as the biological carrier is small in particle size and large in specific surface area, so that the volume load can be very high, and the volume of the reactor can be greatly reduced. Meanwhile, the ceramsite filter material 22 can intercept SS, so that the biological aerated filter 21 can complete biological treatment and solid-liquid separation at the same time. If the particle size of the filler is small and the filtering speed is relatively low, the solid-liquid separation effect is superior to that of a precipitation method, and the filtering effect of the common rapid filtering tank can be close to that of the common rapid filtering tank. When denitrification is required, two sections of biological aerated filters 21 are generally adopted, and oxygen supply is controlled to ensure that the dominant strains on the biological membrane are aerobic bacteria and nitrobacteria respectively, so as to achieve the aims of decarbonization and denitrification. The sewage can meet the requirement of advanced treatment (reclaimed water) on water quality (except for coliform indexes) by the treatment of the two sections of biological aerated filters 21.
Reaction sedimentation tank 24: the part is mainly used as supplement for ensuring that the total phosphorus reaches the standard, PAC (or calcium chloride) and PAM (polyacrylamide) are added as supplement for phosphorus removal, and as phosphorus is degraded limitedly in biochemical effect, when the water inlet concentration is high or is accumulated for a period of time, the drug addition and phosphorus removal are required to be considered as supplement for the discharge reaching the standard. The sloping plate is used for efficiently precipitating the sludge, and under the condition of capping, algae are not easy to breed and block the sloping plate.
Clean water tank 25: as a system reuse water storage tank, the part of water can be used as the back washing water of the biological aerated filter 21, the dispensing water, the field irrigation water and the washing water.
The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, so long as the technical solutions can be realized on the basis of the above embodiments without creative efforts, which should be considered to fall within the protection scope of the patent of the present invention.
Claims (3)
1. The utility model provides a high-efficient sewage treatment system of modularization integrated form which characterized in that: including aeration equalizing basin, anaerobism pond, oxygen deficiency pond, MBBR aerobic tank, contact oxidation pond, secondary sedimentation tank, aeration biological filter, reaction sedimentation tank, clean water basin, sludge impoundment and air compressor machine, the water inlet of aeration equalizing basin does the sewage water inlet of high-efficient sewage treatment system of modularization integrated form, the grid canal is installed near the position of its water inlet in the aeration equalizing basin, install mechanical grid in the grid canal, the bottom in the aeration equalizing basin is installed sewage elevator pump and the delivery port of this sewage elevator pump pass through the sewage pipe with the water inlet end on anaerobism pond upper portion communicates with each other and is connected, the water outlet end of anaerobism pond lower part with the water inlet end of oxygen deficiency pond lower part directly communicates with each other and is connected, the water outlet end on oxygen deficiency pond upper portion pass through the sewage pipe with the water inlet end on MBBR aerobic tank upper portion communicates with each other and is connected, the water outlet end of MBBR aerobic tank lower part pass through, the water outlet end on the upper portion of the contact oxidation pond and the water inlet end on the upper portion of the secondary sedimentation pond are communicated and connected through a water flow channel between the two, the water outlet end on the upper portion of the secondary sedimentation pond is communicated and connected with the water inlet end on the upper portion of the aeration biological filter through a sewage pipe, the water outlet end on the lower portion of the aeration biological filter is communicated and connected with the water inlet end on the lower portion of the reaction sedimentation pond, the water outlet end on the upper portion of the reaction sedimentation pond is communicated and connected with the water inlet end on the upper portion of the clean water pond, the water outlet end on the upper portion of the clean water pond is the clean water outlet of the modularized integrated high-efficiency sewage treatment system, a mixed liquid reflux pump is installed at the bottom in the contact oxidation pond, the water outlet of the mixed liquid reflux pump is communicated and connected with the water inlet end of the anoxic pond through a sewage pipe, a sludge lifting pump The bottom in the reaction sedimentation tank is provided with a sludge lifting pump, the sludge outlet of the sludge lifting pump is communicated and connected with the inlet of the sludge tank through a sludge pipe, the sludge tank is internally provided with a sludge concentration tank, the bottom in the clear water tank is provided with a sewage lifting pump, the water outlet of the sewage lifting pump is communicated and connected with the bottom of the biological aerated filter through a sewage pipe, and the outlet of an air compressor is respectively communicated and connected with an aeration pipe at the bottom in the aeration regulating tank, a microporous aeration head at the bottom in the MBBR aerobic tank, a microporous aeration head at the bottom in the contact oxidation tank, a microporous aeration head at the inner bottom of the biological aerated filter and an aeration pipe at the inner bottom of the sludge concentration tank through air pipes; the anaerobism pond with the oxygen deficiency pond is all located in the first box, MBBR good oxygen pond is located in the second box, the contact oxidation pond with the secondary sedimentation tank is all located in the third box, the biological aerated filter the reaction sedimentation tank with the clean water basin is all located in the fourth box.
2. The modular integrated high efficiency wastewater treatment system according to claim 1, wherein: the position of the aeration regulating tank far away from the water inlet is provided with a sinking groove, and the sewage lifting pump is correspondingly arranged in the sinking groove.
3. The modular integrated high efficiency wastewater treatment system according to claim 1 or 2, wherein: and stirring pumps are respectively arranged at the lower parts of the anaerobic tank and the anoxic tank.
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| CN113105064A (en) * | 2021-03-09 | 2021-07-13 | 江苏裕隆环保有限公司 | Pure membrane MBBR (moving bed biofilm reactor) coupled carbon capture autotrophic nitrogen removal system and use method thereof |
| CN113149332A (en) * | 2021-03-09 | 2021-07-23 | 江苏裕隆环保有限公司 | Modular MBBR (moving bed biofilm reactor) deep nitrogen and phosphorus removal treatment system and use method thereof |
| CN113233709A (en) * | 2021-05-26 | 2021-08-10 | 厦门中环水科技股份有限公司 | Non-membrane treatment method and system for domestic sewage |
| CN113943084A (en) * | 2021-11-16 | 2022-01-18 | 成都剀瑞环保工程有限公司 | Integration MBBR sewage treatment plant |
| CN114349275A (en) * | 2021-12-29 | 2022-04-15 | 广东省南方环保生物科技有限公司 | Wastewater treatment device and method with synchronous deodorization function |
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| CN113149332A (en) * | 2021-03-09 | 2021-07-23 | 江苏裕隆环保有限公司 | Modular MBBR (moving bed biofilm reactor) deep nitrogen and phosphorus removal treatment system and use method thereof |
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