CN202968310U - Combined type artificial wetland system for municipal wastewater treatment - Google Patents
Combined type artificial wetland system for municipal wastewater treatment Download PDFInfo
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- CN202968310U CN202968310U CN2012205657374U CN201220565737U CN202968310U CN 202968310 U CN202968310 U CN 202968310U CN 2012205657374 U CN2012205657374 U CN 2012205657374U CN 201220565737 U CN201220565737 U CN 201220565737U CN 202968310 U CN202968310 U CN 202968310U
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- 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
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Abstract
The utility model relates to a combined type artificial wetland system for municipal wastewater treatment and a municipal wastewater treatment method. The system comprises a biological regulating pond cell, an aerobic degradation and microorganism cultivation tank, a subsurface wetland, a surface wetland, wherein the biological regulating pond cell, the aerobic degradation and microorganism cultivation tank, the subsurface wetland and the surface wetland are in series connected in sequence; the biological regulating reservoir cell comprises a pre-treatment pond A1, a pre-treatment pond A2 and a mixed regulating pond, wherein the pre-treatment pond A1, the pre-treatment pond A2 and the mixed regulating pond are in parallel connected; the mixed regulating pond is in series connected behind the pre-treatment pond A1 and the pre-treatment pond A2; floating aquatic plants are cultivated in the mixed regulating pond; a vermiculite mineral layer is paved on the bottom of the aerobic degradation and microorganism cultivation tank; the substrate in the subsurface wetland consists of a gravel layer, a fine sand layer, a gravel and fine sand mixed layer, and a fine sand and red earth mixed layer from bottom to top in sequence. The combined type artificial wetland system for municipal wastewater treatment disclosed by the utility model not only has complementary advantages to treatment effects of the units, but also has the complementary advantages to treatment effects of different seasons, so that the TN (Total Nitrogen), TP (Total Phosphor) and COD (Chemical Oxygen Demand) cr achieve better removing effect, therefore the wetland area is greatly reduced and the purpose of strengthening the decontamination effect under the condition of saving the construction cost and the maintenance cost is achieved.
Description
Technical field
The utility model relates to sewage treatment area, is specifically related to a kind of built-up type town sewage and processes artificial wet land system.
Background technology
China riverine river valley villages and small towns and small city sanitary sewage uncontrollable discharge are one of important factors that causes pollution of water and eutrophication, are also the important and difficult tasks of of administering of China water pollution.Along with the continuous expansion of Urban Scale, the water consumption in cities and towns and water displacement have further aggravated the pollution of anxiety and the water quality of water all in continuous increase, and environmental problem becomes increasingly conspicuous, and the water crisis has become the important restriction factor of socio-economic development.The fundamental solution that solves the pollution of vast villages and small towns and small city water can only be that application is low-cost, high efficiency sewage disposal technology.Developing rapidly of constructed wetland waste water treatment technology is for a kind of possible approach that provides is provided.In recent years, this technology is widely used for improving water quality by countries in the world, repairs the nutrient pollutant matter of lake, reservoir, controls the nitrogen and phosphorus pollution of rural sewage, has been a cheap sewage disposal practical technique that is constantly obtaining studying application and development.
Although constructed wetland waste water treatment technology has the characteristics of high-level efficiency, less energy-consumption, but wetland technology also has very strong typical regional characters and limitation, therefore be necessary the new-type artificial wet land system of calmodulin binding domain CaM characteristics exploitation, for building new town sewage treatment system and new approach is opened up in the treatment system increase-volume.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of the overcome defective of single technique, built-up type town sewage processing artificial wet land system realization mutual supplement with each other's advantages and that have the advantages such as investment is low with working cost, maintenance management is easy, the anti impulsion load ability is strong, ecoscape improves successful.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
design a kind of built-up type town sewage and process artificial wet land system, comprise the biological regulation pool unit of series connection successively, aerobic degradation and microorganism culturing pond, current wetland, surface-flow, described biological regulation pool unit comprises pretreatment pool A1 in parallel, pretreatment pool A2 and be connected on mixing equalizing tank after both, this biological regulation pool unit is provided with the effect depth of water 1.30～1.60m, and put the type waterplant that swims in a suitable place to breed, and its cover degree in the pond is reached more than 95%, with plant, animal, microorganism is introduced the test wastewater equalization pond, strengthened pretreated Degradation and Transformation effect,
Be covered with to build the thick vermiculite mineral layer of 25～35cm of microorganism and organic nutrient buffer pool in the bottom in described aerobic degradation and microorganism culturing pond, utilize this carrier technique in this unit screening and cultivate effective microorganism, the flora of cultivating is diffused into biological regulating reservoir and wetland unit, increase the microorganism concn for the treatment of system, amplify the microbiological deterioration effect, improve the biodegradability of whole system;
Matrix in described current wetland is followed successively by the thick gravel bed of 25～35cm, thick the second mixolimnion (being comprised of fine sand and red soil) that is used for Phosphate Sorption and trace element of the first mixolimnion (being comprised of vermiculite and fine sand), the 15～25cm that are used for the absorption ammonium nitrogen that fine sand layer, 35～45cm that 15～25cm is thick are thick from the bottom to top, plants evergreen type terrestrial plant on its earth's surface; Described surface-flow configures various very water types, floating blade profile, the type of swimming, heavy water type waterplant from shallow to deep; Utilize current wetland absorption, filter, precipitation function holds back inorganic and organic toxic substance, enhancing go N to remove the P effect, utilize surface-flow neutralization, adjusting, stablize effluent quality.
Based on the aerobic reaction initial stage degraded principle high with conversion rate, adopt quick aerobic degradation that organic pollutant is converted into available nutrient for wetland plant growth, this unitized design has been reduced exponentially the biochemical reaction time, has effectively been reduced organic loading, the corresponding area that has also dwindled exponentially wetland.Configuration different microorganisms, plant, animal species utilize the principles such as biocenosis, competition, food chain (net), trophic level, ecological niche, set up and stablize Exchange of material and energy between micro-ecological environment promotion biology.
Be respectively equipped with corresponding mud regulation and control pipeline between described aerobic degradation and microorganism culturing pond and described biological regulation pool unit, current wetland, surface-flow.
Be respectively equipped with corresponding sewage regulation and control pipeline between described biological regulation pool unit and described current wetland, surface-flow.
The described type waterplant that swims is at least a in Herba Eichhorniae, Herba azollae imbricatae, duckweed.
Described evergreen type terrestrial plant is at least a in chrysanthemum Canna generalis Bailey, safflower Canna generalis Bailey, ginger grass, cattail, dwarf elephant grass, water arum, mullet grass.
At least a in black algae, hornwort, hybrid giant napier, water peanut of described heavy water type waterplant.
Described very water type waterplant is at least a in calamus, Wildcelery Herb, wild rice stem.
Described vermiculite and fine sand mixolimnion are comprised of by the weight ratio of 1:0.8～1.2 vermiculite, fine sand; Described fine sand and red soil mixolimnion are comprised of by the weight ratio of 1:1～1.5 fine sand, red soil.
Configuration different sorts draft, xylophyta, utilize the not characteristic distributions of kindred plant root system, form Multilayer water environment aerobic zone (around root system), aerobic area and anaerobic zone (without root system or few root system district), aerobic microbiological is with organic substance decomposing, aerobic-anaerobic microbe and anaerobion degradation of organic substances, exist in the time of aerobic zone and anaerobic zone, extremely be conducive to the carrying out of the nitrification and denitrification reaction of nitrogen, reach efficient efficiencies of nitrogen removal.
Utilize aforesaid combination formula town sewage to process artificial wet land system and carry out the town sewage treatment process, comprise the following steps:
(1) at first town sewage is introduced above-mentioned biological regulation pool unit, precipitated, bio-absorbable purifies, hydraulic detention time 5～7h;
(2) town sewage after upper step processing is finished causes in described aerobic degradation and microorganism culturing pond and carries out quick aerated reaction, and hydraulic detention time is at 2～6h;
(3) sewage after the upper step processes causes in described current wetland again, and the microorganism that matrix, the plant of planting and the wetland that utilization is wherein filled adheres to adsorbs, absorbs, decomposes to the various materials of sewage the purpose of holding back, purifying to reach;
(4) sewage after upper step processing causes described surface-flow, utilizes existing various hydrobiological further comprehensive treating process purification, the last qualified discharges of carrying out in surface-flow;
(5) regularly (as the hydraulic detention time 6.4h of sewage at biological regulating reservoir, average water temperature reaches 18～22 ℃) shifted the active sludge that produces in described aerobic degradation and microorganism culturing pond respectively in 85%, 10%, 5% ratio and is inoculated into described biological regulation pool unit, current wetland, surface-flow.Quantitatively the backflow aerobic degradation with the mud in microorganism culturing pond to equalizing tank, can biochemical degree in order to improve waste water, reduction aerobic treatment unit organic loading.
(6) in operational process, according to the sewage flux in the regulation and control biological regulation pool unit of the hydraulic load of each unit, sewage volumetric loading, aerobic degradation and microorganism culturing pond, current wetland, surface-flow, purpose is: by regulation and control, realize the combination synergy of each unit, the additive effect of combined treatment Elementary Function, combination different technologies and technique, performance advantage separately realizes having complementary advantages.
In above-mentioned sewage operation treating processes can also by 8～12% of active mud content in aerobic degradation and microorganism culturing pond add wherein have adsorb more by force ammonium nitrogen ability vermiculite mineral as biofilm carrier.
The utlity model has actively useful effect:
1. the utility model system not only can realize the mutual supplement with each other's advantages for the treatment of effect between each unit, also can realize the mutual supplement with each other's advantages for the treatment of effect in each in season, thereby make TN, TP and COD
crAll can reach removal effect preferably; Can make up that single routine biochemistry is processed (removing organic pollutant effective and relatively poor to nitrogen, phosphorus removal effect) and single conventional artificial swamp is processed the deficiency of (removal nitrogen, phosphorus effect better), also solved simultaneously the problem of poor processing effect in winter, finally reach the purpose of combination synergy, mutual supplement with each other's advantages, see Table 1.
Table 1 system each processing unit soil removability relatively
2. after guarantee processing under effluent quality prerequisite up to standard, combined system be construction cost or running cost all lower than conventional both at home and abroad treatment process, see Table 2.
Table 2 system Construction and running cost and land area
3. after the utility model system is made up biochemical processing and Treatment Technology of Constructed Wetland, can greatly reduce Wetland Area, finally reach in the situation that save the purpose that construction cost and maintenance cost strengthen clean effect.
4. combination process can greatly reduce the energy consumption of biochemical reaction, utilizes the combination of undercurrent and surface-flow, has realized the collocation of aquatic and Lu Sheng, summer and winter, annual and perennial plant, thereby has enlarged the floristic range of choice of Various Seasonal.
5. this combination type wetland treatment system can be introduced a large amount of landscape plants, forms multi-level view, and the enhancing landscape level makes artificial swamp near natural ecosystems.Simultaneously the landscape function of wetland is dissolved in the amusement and recreation system, not only can purifying water body, the fishing old field also is provided and has increased aesthstic impression, be to have environmental protection, view, leisure multi-efficiency concurrently.
Description of drawings
Fig. 1 is the unitized construction schematic diagram of combined type artificial wetland sewage purification system.
Embodiment
Further set forth the utility model below in conjunction with specific embodiment.In following embodiment, related system architecture if no special instructions, is conventional system architecture; Related concrete grammar step is the ordinary method step if no special instructions.
Embodiment 1 Community of Guangzhou City combined-type sewage is processed artificial wet land system, referring to Fig. 1, biological regulation pool unit (A unit), aerobic degradation and the microorganism culturing pond (B unit), current wetland (C unit), the surface-flow (D unit) that comprise series connection successively, relevant structures design variable sees Table 3; Described biological regulation pool unit comprises pretreatment pool A1, pretreatment pool A2 in parallel and is connected on both mixing equalizing tanks afterwards, this biological regulation pool unit cellar area 182m
2, available depth 1.45m wherein all puts the waterplant such as Herba Eichhorniae in a suitable place to breed in pretreatment pool A1, mixing equalizing tank, and cover degree reaches more than 95%, and biomass reaches 21.59kg/m
2, put the plants such as Herba azollae imbricatae in pretreatment pool A2 in a suitable place to breed, cover degree reaches more than 95%, and biomass reaches 26kg/m
2Sewage flows into the peak flow 800m that mixes equalizing tank
3/ d, per day flow are 540m
3/ d, hydraulic detention time 6.4h, average water temperature is kept 20 ℃ of left and right;
Be covered with to build the thick vermiculite mineral layer of 30cm of microorganism and organic nutrient buffer pool in the bottom in described aerobic degradation and microorganism culturing pond; Add in operational process a certain amount of (generally by active mud content 10%) have adsorb more by force ammonium nitrogen ability vermiculite mineral as biofilm carrier.HRr (hydraulic detention time) is designed to 2 hours.The efficient in early stage of biochemical reaction is very high, can effectively reduce the organic contamination substrate concentration to alleviate the organic loading of wetland unit.Biochemical reaction can transform into organic matter rapidly available nutrient and absorbs for wetland plant in addition.It is to cultivate and the domestication effective microorganism that another purpose of biochemical unit is set, as the effective microbe bacterial classification source of whole system.Therefore, the effect of B unit is degraded and transforms organic pollutant, culturing micro-organisms bacterial classification, buffering system organic nutrient stream.
Matrix in described current wetland is followed successively by the thick vermiculite of the thick gravel bed of 30cm, fine sand layer, 40cm that 20cm is thick and fine sand mixolimnion (two materials mix by the weight ratio of 1:1), fine sand and red soil mixolimnion (two materials mix by the weight ratio of 1:1) that 20cm is thick, the evergreen type terrestrial plant of plantation on its earth's surface from the bottom to top; Remove phosphorus and trace element with red soil, adsorb ammonium nitrogen with vermiculite.The nutrient that accumulation is held back in the unit absorbs for plant, soil microorganisms and animal; The C unit is the start unit at intermittence, and Main Function is: at first, as nutrient buffer pool regulation system processing power, slow down the pollutant load of surface-flow unit when forming complexity at flooding velocity and Pollutant levels increase, pollutent; Secondly, the adsorptive power of range site is removed poisonous and objectionable impurities, prevents the ecosystem of these material damage surface-flows; The 3rd, change according to the season waterplant, and waterplant soil removability weak period in the winter time, can relatively independent operation for some time, guarantee to discharge water quality reaching standard; Plant comprises Major Introduction: emergent has: calamus, Wildcelery Herb, wild rice stem; Floating plant has: Herba azollae imbricatae, Herba Eichhorniae, duckweed etc.; Submerged plant has: black algae, hornwort, hybrid giant napier etc.
Described surface-flow configures various very water types, floating blade profile, the type of swimming, heavy water type waterplant from shallow to deep.Thing further reduces the organic contamination substrate concentration by bio-absorbable, utilization and conversion, stablizes effluent quality.
Utilize aforesaid combination formula town sewage to process artificial wet land system and carry out the town sewage treatment process, comprise the following steps, relevant technological parameters sees Table 3:
(1) at first town sewage is introduced above-mentioned biological regulation pool unit, precipitated, bio-absorbable purifies;
(2) town sewage after upper step processing is finished causes in described aerobic degradation and microorganism culturing pond and carries out quick aerated reaction;
(3) sewage after the upper step processes causes in described current wetland again, and the microorganism that matrix, the plant of planting and the wetland that utilization is wherein filled adheres to adsorbs, absorbs, decomposes to the various materials of sewage the purpose of holding back, purifying to reach;
(4) sewage after upper step processing causes described surface-flow, utilizes existing various hydrobiological further comprehensive treating process purification, the last qualified discharges of carrying out in surface-flow;
(5) regularly (as at the hydraulic detention time 5～7h of sewage at biological regulating reservoir, when average water temperature reaches 20 ℃ of left and right) active sludge that produces in described aerobic degradation and microorganism culturing pond is shifted respectively in 85%, 10%, 5% ratio is inoculated into described biological regulation pool unit, current wetland, surface-flow.Realize the regulation and control of aforementioned proportion by pipeline and gauger.
(6) in operational process, according to hydraulic load, sewage volumetric loading (the general design flow 1050m of each unit
3/ d, other relevant parameters sees Table 3) regulation and control biological regulation pool unit, aerobic degradation and the sewage flux in microorganism culturing pond, current wetland, surface-flow, specifically can realize by pipeline and gauger the regulation and control of sewage flux, to realize the combination synergy of each unit, the additive effect of combined treatment Elementary Function.Combination different technologies and technique, performance advantage separately realizes having complementary advantages.
Table 3 integrated mode structures design variable
Processing unit BOD clearance reference data in table 4 A-B-C-D pattern
Take 2011 as example, the annual mean of local town sewage being processed rear system each processing unit effluent quality index with this routine described combined type artificial wetland sewage purification system sees Table 5.Can find out from table 5, the clearance of sewage indexs such as CODcr, BOD, TN and TP after combined system is processed all reaches more than 80%, NH
4 + OneThe N clearance reaches 91%, system to go N to remove the P effect very remarkable, the clearance of poisonous element is also very high.
Each unit effluent quality analytical value (2011) after table 5 is processed
This routine combinatorial artificial wet land system demonstration project productivity effect analysis in 3 years (compare with conventional processing, see Table 6) is designed to day amount of disposing of sewage an average out to 800t/d, and 1 year processes day is 300d, and average annual sewage load is 300x800=240000t/a.
Table 6 combinatorial artificial wet land system cost and Efficiency Comparison analysis
Upper table comparative analysis shows, adopts the conventional processing working cost high, and the infusion of financial resources recovery time is long slowly; And adopting combinatorial artificial marsh sewage treatment system, Second Year just can steam again the cost that capital construction drops into, profit space is large.
Although, above with a general description of the specific embodiments the utility model having been done detailed description, on the utility model basis, can make some modifications or improvements it, this will be apparent to those skilled in the art.Therefore, these modifications or improvements on the basis of not departing from the utility model spirit all belong to the claimed scope of the utility model.
Claims (3)
1. a built-up type town sewage is processed artificial wet land system, comprise successively the biological regulation pool unit, aerobic degradation of series connection and microorganism culturing pond, current wetland, surface-flow, it is characterized in that, described biological regulation pool unit comprises pretreatment pool A1, pretreatment pool A2 in parallel and is connected on both mixing equalizing tanks afterwards, this biological regulation pool unit is provided with the effect depth of water 1.30～1.60m, and put the type waterplant that swims in a suitable place to breed, and its cover degree in the pond is reached more than 95%; Be covered with to build the thick vermiculite mineral layer of 25～35cm of microorganism and organic nutrient buffer pool in the bottom in described aerobic degradation and microorganism culturing pond; Filling substrate in described current wetland is followed successively by the thick gravel bed of 25～35cm, thick the second mixolimnion that is used for Phosphate Sorption and trace element of the first mixolimnion, the 15～25cm that are used for the absorption ammonium nitrogen that fine sand layer, 35～45cm that 15～25cm is thick are thick, the evergreen type terrestrial plant of plantation on its earth's surface from the bottom to top; Described surface-flow configures various very water types, floating blade profile, the type of swimming, heavy water type waterplant from shallow to deep.
2. built-up type town sewage according to claim 1 is processed artificial wet land system, it is characterized in that, be respectively equipped with corresponding mud regulation and control pipeline between described aerobic degradation and microorganism culturing pond and described biological regulation pool unit, current wetland, surface-flow.
3. built-up type town sewage according to claim 1 is processed artificial wet land system, it is characterized in that, is respectively equipped with corresponding sewage and regulates and controls pipeline between described biological regulation pool unit and described current wetland, surface-flow.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3013347A1 (en) * | 2013-11-21 | 2015-05-22 | Recycl Eau | METHOD AND STATION FOR MANAGING EFFLUENTS FROM AGRONOMIC ACTIVITIES BY HYBRID PHYTOEPURATION TREATMENT. |
| US11186506B2 (en) * | 2019-03-15 | 2021-11-30 | Shandong University | Subsurface flow constructed wetland and method of using the same for wastewater treatment |
-
2012
- 2012-10-31 CN CN2012205657374U patent/CN202968310U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3013347A1 (en) * | 2013-11-21 | 2015-05-22 | Recycl Eau | METHOD AND STATION FOR MANAGING EFFLUENTS FROM AGRONOMIC ACTIVITIES BY HYBRID PHYTOEPURATION TREATMENT. |
| US11186506B2 (en) * | 2019-03-15 | 2021-11-30 | Shandong University | Subsurface flow constructed wetland and method of using the same for wastewater treatment |
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Effective date of registration: 20131127 Address after: 274100 Shandong city of Heze province Dingtao County Economic Development Zone, Fang Shan Xiang (Netherlands East Route) Patentee after: Heze Sanlei Plastic Co.,Ltd. Address before: 450011 Zhengzhou Jinshui District, Henan, North Ring Road, No. 36 Patentee before: North China University of Water Resources and Electric Power |
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