CN103183445A - Method and system for advanced treatment of rural domestic sewage - Google Patents
Method and system for advanced treatment of rural domestic sewage Download PDFInfo
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- CN103183445A CN103183445A CN2011104453261A CN201110445326A CN103183445A CN 103183445 A CN103183445 A CN 103183445A CN 2011104453261 A CN2011104453261 A CN 2011104453261A CN 201110445326 A CN201110445326 A CN 201110445326A CN 103183445 A CN103183445 A CN 103183445A
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Abstract
The invention relates to the technical field of rural domestic sewage treatment, and particularly relates to a method and a system for advanced treatment of rural domestic sewage. The method is characterized by comprising the following steps: processing the rural domestic sewage by primary treatment or secondary treatment. The treated sewage is fed into a first facultative ecological pond, and then fed into an undercurrent artificial wetland system (three blocks in series). The sewage treated by the undercurrent artificial wetland system then flows into an aerobic ecological pond, and finally into a second facultative ecological pond, and ultimately is discharged reaching the standard. The main point of the invention is to provide an economical method for advanced treatment of rural domestic sewage. The cost is saved, and on the other hand, the purpose of discharging the sewage by advanced treatment is achieved. The difficult problem that economical treatment and advanced treatment are contradictory in solving the rural non-point source pollution problem is effectively solved.
Description
Technical field
The present invention relates to the domestic sewage in rural areas by using processing technology field, particularly relate to a kind of method and system that is applicable to the domestic sewage in rural areas by using advanced treatment.
Background technology
That the domestic sewage in rural areas by using treatment technology refers to is intensive with respect to urban population, the sewage water yield changes little a kind of sewage disposal technology, and it has population earlier to characteristics such as disperseing, the sewage water yield changes greatly, Pollutant levels are low.
China's villages and small towns territorial scope extensively disperses, difference such as social organization's structure, the level of economic development, standard of living are bigger, this has not only determined source, the water quality of domestic sewage in rural areas by using, the diversity of the water yield, and has determined selection, engineering construction and the investment of its treatment process, the pattern of operational management etc. many-sided complicacy.Therefore, how controlling and administer China's domestic sewage in rural areas by using problem, is to need long-term continuous practice and discussions.
Pollute characteristics wide, that disperse for domestic sewage in rural areas by using, external many countries have carried out experimental study and practice.Australia utilizes sewage directly to irrigate land, and the crop that utilization is cultivated absorbs pollutent and the moisture in the water of decomposition; Employings such as the U.S., Japan, Israel, Russia and West Europe are batched sewage in the diafiltration ditch with certain structure, and pollutent obtains handling and purifying by the acting in conjunction of physics, chemistry, microorganism.Country such as Europe, North America, Australia, New Zealand extensively adopts artificial wet land treating system, utilizes the acting in conjunction of each kind of plant, microorganism, soil, reaches the purpose of purifying waste water.Germany, France, the U.S. adopt oxidation pond to handle rural society sewage, utilize the acting in conjunction of bacterium algae to remove pollutants in sewage.
China to the domestic sewage in rural areas by using Processing Technology than developed countries evening, in recent years, practical exploration has been carried out to the treatment technology of country sewage in more domestic areas, as anaerobic biogas generating pit treatment technology, artificial swamp treatment technology, oxidation pond treatment technology, land percolation treatment technology, it is the process that needs study for a long period of time and explore that domestic sewage in rural areas by using is handled.
At present, be applicable to that the technology of domestic sewage in rural areas by using dispersion treatment generally is divided into pre-treatment and second-stage treatment, pre-treatment comprises grid, septic tank, preliminary sedimentation tank etc., is mainly used in removing part SS; Second-stage treatment comprises aeration tank, biological filter, sbr reactor device, stabilization pond, artificial swamp, soil facture etc., is mainly used in removing BOD, SS, nitrogen, phosphorus.According to different processing intents and practical situation, various technologies can be made up, for example: the combination of pre-treatment → second-stage treatment (combination of septic tank → aeration tank), pre-treatment → second-stage treatment → other combination (septic tank → artificial swamp → slow sand filter tank etc.).
Present domestic relatively more successful domestic sewage in rural areas by using is handled example to be had:
The Nanhe River, mansion, Chengdu Living Water Park artificial wet land treating system is made up of four parts: 1. anaerobism-double oxygen treatment system; 2. plant pond bed treatment system; 3. fish pond system; 4. priming reservoir and natural landscape ditch.Since this system stable operation, constituted complete wetland coenosis, effects of purification quality is obvious.Monitoring result shows that this system is to COD
Cr, BOD
5, NH
3The clearance of-H and oil all can reach more than 80% water outlet concentration C OD
Cr＜10mg/L, BOD
5＜3mg/L, NH
3-H＜0.02mg/L and oil＜0.05mg/L reach " water environment quality standard " (3838-2002) middle II and requirement of III class quality.
Wang Junsan is art breading flow processing nebula lake eutrophic water with " the nebula lake eutrophic water → primary water biological pond → aquatic reinforcement of the elementary plant gravel bed system → secondary pool → secondary plant gravel bed system → plant diafiltration bed → water outlet ", at 1m
3/ (m
2D) clearance of all contaminations is respectively 99.87%, 98.45%, 93.33% to blue-green algae, chlorophyll α, non-ionic ammonia clearance especially still than higher under the high hydraulic load, and TP also reaches 71.42%.After the eutrophic water process 19.98h purifying treatment of nebula lake, effluent quality all reaches " water environment quality standard " II class water water quality standard (GB3838-2002) except TN, and TN reaches tap water III class water water quality standard,
Summary of the invention
Existing domestic sewage in rural areas by using treatment technology defective is that treatment technology is single relatively, and the anaerobism technology is under certain condition than aerobic technical energy saving, but uses the anaerobism technique effect not good separately, and effluent quality is difficult to reach the relevant emission standard of country; The artificial relatively system cost of natural system is low, and operational management is convenient, and energy consumption is low, but is subjected to the restriction of weather condition and various resources, and effluent quality is not as manual system; In natural system, land system is good than stabilization pond type systematic treatment effect, good reliability; MBR is good than traditional biological treatment effluent quality, and floor space is little, but the operational and administrative expenses height, disposable having high input.Be that the biological treatment of representative needs higher investment cost with activated sludge process, oxidation ditch, biomembrance process, SBR, need certain administrative skill and overhead charges, be difficult to become rural area decentralized type sewage improvement technology.
The problem that the present invention mainly solves is a kind of economical method advanced treatment domestic sewage in rural areas by using, save cost on the one hand, on the other hand, make sewage reach the purpose of discharging after the advanced treatment, thereby effectively solve the insoluble economical treatment process of institute and the conflicting problem of advanced treatment in China's rural area pollution of area source problem.
For achieving the above object, example of the present invention proposes a kind of method and system that is used in the rural dispersed sanitary sewage disposal, and when reaching advanced treatment, the expense cost is fewer purpose again.May further comprise the steps: domestic sewage in rural areas by using at first enters first facultative The ecology pond systems through after the primary treatment, and the drowned flow artificial wet land of flowing through subsequently flows into aerobic ecological pond again, flows into second facultative The ecology pond systems at last.
Concrete steps are:
The present invention includes two facultative ecological ponds, the drowned flow artificial wet land of three series connection, an aerobic ecological pond.
Wherein, in the facultative ecological pond, plantation: poly-grass, lotus, Gorgon fruit, algae etc., cultured fishes: grass carp, swamp eel etc.; Its operational management is convenient, long hydraulic detention time make it can stand the sewage water yield, water quality than great fluctuation process and the unlikely water quality that enters next link that has a strong impact on; Have algae, waterplant, fish, protozoon in the pool, it carries out organic pollutant in the aerobic reaction degradation of sewage at aerobic zone; Facultative district is because the residence time of sewage is long, and nitrifier, nitrococcus at this nitration reaction take place, and simultaneously, fish, waterplant also have removal, absorb the function of pollutent, and facultative lagoon is the sewage ecological treatment system of a complexity.
The drowned flow artificial wet land filler is rubble, big particle diameter construction waste, small particle size construction waste, and the top layer plant is the careless class of self-sow.The removal of pollutent is mainly the acting in conjunction of filler, plant, microorganism in the drowned flow artificial wet land.Filler not only provides growth medium for plant and microorganism, also by the direct removal pollutent of effects such as precipitation, filtration and absorption; Plant mainly is that pollutent is had absorption, metabolism, cumulative function; Microorganism is the artificial swamp indispensable important component part of purifying waste water, microorganism in the artificial wet land system is mainly removed organic substance and the ammonia nitrogen in the sewage, the organic substance of some difficult degradation and toxic substance can reach the purpose that absorbs and decompose these organic substances and toxic substance by the variation of microorganism self.
Aerobic ecological pond: plantation lotus in the pool, poly-grass, algae etc., cultured fishes: grass carp, swamp eel, river prawn etc.By the synthesis and degradation organism of aerobic microbiological, waterplant passes through the oxygen of the required usefulness of photosynthesis releasing microbe degradation of organic substances in the pool, simultaneously absorbed nitrogen, phosphorus (measuring less relatively).
Description of drawings
Fig. 1 is domestic sewage in rural areas by using advanced treatment orthographic plan of the present invention;
Fig. 2 is domestic sewage in rural areas by using advanced treatment schema of the present invention.
Embodiment
By the embodiment of the invention, can make sewage reach the purpose of discharging after the advanced treatment, be a kind of both economical type sewage disposal scheme simultaneously.The present invention is mainly the combination of artificial wet land system and pool system, its good denitrogenation and dephosphorization effect.Long-range seeing, later operational and administrative expenses is also lower.
Below in conjunction with accompanying drawing, describe technical scheme of the present invention in detail: domestic sewage in rural areas by using (1), through primary treatment or B-grade sewage treatment system (2), elementary: the foreign material of large-sizes such as the fibre object in the removing sewage, strip, bulk etc. and removal part SS, secondary: remove part SS, remove part nitrogen, phosphorus, COD, BOD etc.
Sewage after the processing at first flows into first facultative ecological pond (3), plants in the pool: poly-grass, lotus, Gorgon fruit, algae etc., cultured fishes: grass carp, swamp eel etc.; Form an optimum ecological pond in the pool, SS, nitrogen, phosphorus, BOD, COD will have part to be removed on this pool.Owing to not only have aerobic zone but also have facultative district in the pool, so synthetic, the decomposition reaction of aerobic microbiological had both taken place on this pool, and larger molecular organics is degraded to small organic molecule or is utilized by microorganism, simultaneously, nitration reaction is also taking place in this pool, thus effectively denitrogenation.
Flow into subsurface flow constructed wetland system (three series connection (4), (5), (6)) then, in the artificial swamp, because SS will be further removed in the acting in conjunction of filler, microorganism, plant, microorganism is with further degradation of organic substances, and plant is with absorption portion nitrogen, phosphorus; Simultaneously, according to " root domain tyeory ", have aerobic, anoxic, anaerobic zone in root system of plant and filler contact part, thereby be conducive to the growth of nitrifier, nitrococcus, thereby effectively remove part nitrogen, same, anaerobic zone is conducive to polyP bacteria to the release of phosphorus.
Sewage after treatment flows into aerobic ecological pond (7) subsequently, is mainly aerobic reactor zone in this zone, further removes BOD, COD and SS in the sewage.
Flow into second facultative ecological pond (8) at last, the process that takes place in this zone similar with in first facultative ecological pond, different is that in this zone, Pollutant levels are lower.
Claims (7)
1. a method and system that is applicable to the domestic sewage in rural areas by using advanced treatment is characterized in that, may further comprise the steps:
Domestic sewage in rural areas by using (1) is through primary treatment or B-grade sewage treatment system (2).
Sewage after the processing at first flows into first facultative ecological pond (3), flows into subsurface flow constructed wetland system (three series connection (4), (5), (6)) then.
Sewage after treatment flows into aerobic ecological pond (7) subsequently, flows into second facultative ecological pond (8) at last, final discharge up to standard.
2. the method and system that is applicable to the domestic sewage in rural areas by using advanced treatment as claimed in claim 1, it is characterized in that, this system comprises: elementary level is handled or B-grade sewage treatment system (2), a facultative ecological pond (3), three drowned flow artificial wet lands ((4), (5), (6)), an aerobic ecological pond (7), a facultative ecological pond (8).
3. the method and system that is applicable to the domestic sewage in rural areas by using advanced treatment as claimed in claim 1 is characterized in that, just can enter this system through the domestic sewage in rural areas by using (1) after primary treatment or the second-stage treatment system (2).
4. the method and system that is applicable to the domestic sewage in rural areas by using advanced treatment as claimed in claim 1 is characterized in that, the first facultative ecological pond (3) of at first flowing through of the domestic sewage in rural areas by using after primary treatment or second-stage treatment system (2).
5. the method and system that is applicable to the domestic sewage in rural areas by using advanced treatment as claimed in claim 1 is characterized in that, the sewage of the facultative ecological pond (3) of flowing through flows into drowned flow artificial wet land ((4), (5), (6)) subsequently.
6. the method and system that is applicable to the domestic sewage in rural areas by using advanced treatment as claimed in claim 1 is characterized in that, the sewage after handling through drowned flow artificial wet land ((4), (5), (6)) enters aerobic ecological pond (7) subsequently.
7. the method and system that is applicable to the domestic sewage in rural areas by using advanced treatment as claimed in claim 1 is characterized in that, through the last inflow of sewage second facultative ecological pond (8) of aerobic ecological pond (7), final discharge up to standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011104453261A CN103183445A (en) | 2011-12-28 | 2011-12-28 | Method and system for advanced treatment of rural domestic sewage |
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| CN2011104453261A CN103183445A (en) | 2011-12-28 | 2011-12-28 | Method and system for advanced treatment of rural domestic sewage |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103469761A (en) * | 2013-08-20 | 2013-12-25 | 江苏省农业科学院 | Farmland runoff loss nutrient recycling system and application |
| CN104450501A (en) * | 2014-11-20 | 2015-03-25 | 江苏省农业科学院 | Distributed rural domestic waste recycling device and application thereof |
| CN105174604A (en) * | 2015-07-20 | 2015-12-23 | 常州市好利莱光电科技有限公司 | Method for treating pig farm wastewater through combination of stabilization ponds |
| CN106746359A (en) * | 2016-12-14 | 2017-05-31 | 苏州润弘贸易有限公司 | The method of multifunctional combined treatment domestic sewage in rural areas |
| CN106830513A (en) * | 2016-12-14 | 2017-06-13 | 苏州润弘贸易有限公司 | The treatment method for rural sewage of better performances |
| CN106865763A (en) * | 2016-12-14 | 2017-06-20 | 苏州润弘贸易有限公司 | Reduce the treatment method for rural sewage that mosquitos and flies grows |
| CN106882898A (en) * | 2016-12-14 | 2017-06-23 | 苏州润弘贸易有限公司 | A kind of method of Combined Treatment domestic sewage in rural areas |
| CN108821449A (en) * | 2018-08-22 | 2018-11-16 | 苏州富特尼水务工程有限公司 | A kind of method and system suitable for domestic sewage in rural areas advanced treating |
| CN110352874A (en) * | 2018-04-07 | 2019-10-22 | 华宇辉煌（河南）生态环保科技有限公司 | A kind of combined type green ecological aquaculture system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103469761A (en) * | 2013-08-20 | 2013-12-25 | 江苏省农业科学院 | Farmland runoff loss nutrient recycling system and application |
| CN104450501A (en) * | 2014-11-20 | 2015-03-25 | 江苏省农业科学院 | Distributed rural domestic waste recycling device and application thereof |
| CN105174604A (en) * | 2015-07-20 | 2015-12-23 | 常州市好利莱光电科技有限公司 | Method for treating pig farm wastewater through combination of stabilization ponds |
| CN106746359A (en) * | 2016-12-14 | 2017-05-31 | 苏州润弘贸易有限公司 | The method of multifunctional combined treatment domestic sewage in rural areas |
| CN106830513A (en) * | 2016-12-14 | 2017-06-13 | 苏州润弘贸易有限公司 | The treatment method for rural sewage of better performances |
| CN106865763A (en) * | 2016-12-14 | 2017-06-20 | 苏州润弘贸易有限公司 | Reduce the treatment method for rural sewage that mosquitos and flies grows |
| CN106882898A (en) * | 2016-12-14 | 2017-06-23 | 苏州润弘贸易有限公司 | A kind of method of Combined Treatment domestic sewage in rural areas |
| CN110352874A (en) * | 2018-04-07 | 2019-10-22 | 华宇辉煌（河南）生态环保科技有限公司 | A kind of combined type green ecological aquaculture system |
| CN110352874B (en) * | 2018-04-07 | 2022-05-24 | 河南科技大学 | Composite green ecological aquaculture system |
| CN108821449A (en) * | 2018-08-22 | 2018-11-16 | 苏州富特尼水务工程有限公司 | A kind of method and system suitable for domestic sewage in rural areas advanced treating |
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Application publication date: 20130703 |