CN104671615A - Process for treating livestock and poultry breeding sewage entering Lake Taihu - Google Patents
Process for treating livestock and poultry breeding sewage entering Lake Taihu Download PDFInfo
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Abstract
The invention relates to a process for treating livestock and poultry breeding sewage entering the Lake Taihu. According to the designed and adopted treating process, the technology that primary precipitation and filtration, anaerobic-aerobic biochemical treatment, dosing flocculation and coagulation reactions and membrane module filtration are combined is mainly used, and a material method for adding a compound water treatment agent is adopted, so that efficient denitrification, dephosphorization and COD reduction functions are realized; meanwhile, the process has good decoloration and sterilization effects. According to the process, the operation cost and the management cost are low, the sewage treatment effect is good, and treated livestock and poultry breeding sewage can reach the state-specified first-class discharge standard for sewage treatment in Lake Taihu regions.
Description
Technical field
The present invention relates to environmental protection technical field, mainly enter the livestock and poultry cultivation sewage disposal in the exit of a lake along the line for Taihu Lake, and the one provided enters lake livestock and poultry cultivation sewage treatment process for Taihu Lake.
Background technology
Along the line in Taihu Lake at present, due to great attention and the strict supervision of government agencies at all levels, improvement and the discharge of industrial enterprise's sewage can reach standard substantially, but along Taihu Lake basin, due to across Jiangsu and Zhejiang Provinces two province, not only industrial enterprise of cities and counties is many, and also there is many livestock and poultry cultivation places at lake, Taihu Lake river mouth, comprise many agricultural demonstration zone in addition, because livestock and poultry farm sewage has typically " three is high " feature, CODcr is up to 3000 ~ 12000mg/l, ammonia nitrogen is up to 800 ~ 2200mg/l, P exceeds standard decades of times, being limited to livestock and poultry breeding industry is small profits industries, qualified discharge remains in larger technology and economic difficulty, but the environmental degradation of current Taihu Lake water scenery, particularly ammonia, nitrogen, the index severe overweights such as phosphorus, its basic reason is exactly because the sewage of thousands of along the line along Taihu Lake cultivation places and agricultural demonstration zone does not have process up to standard to cause.Although some scale livestock farming and agricultural demonstration zone are provided with simple sewage disposal device facility; but because its installations and facilities are simple; treatment process is single; general is all adopt UASB+SBR technique; ZWD Novel biomass pool+biological cycle treatment process etc., independent anaerobism or aerobic process process are all not suitable for sewage of farm, and the effect of its process is undesirable; effluent quality does not reach the above emission standard of TAI HU AREA sewage second-level, or cannot normally apply because cost is too high.Especially at plum rain season in summer, feel simply helpless especially, define raw sewerage and be directly disposed to Taihu Lake, also after entering summer, buried root to the formation of Taihu Lake blue-green algae.Therefore we are for current Taihu Lake water quality situation; while maintenance industrial sewage qualified discharge; the Taihu Lake livestock and poultry farm along the line sewage treatment process of Agro-ecology Demonstration Garden and state of the art is in one's power improved by technological innovation; could promote Taihu Lake water quality from source like this; improve Taihu Lake ecotope further; preserve the ecological environment, reach the object of harmony between man and nature.
Summary of the invention
Goal of the invention: the invention provides and a kind of enter lake livestock and poultry cultivation sewage treatment process for Taihu Lake, this sewage treatment process has good denitrogenation, dephosphorization, falls the function of COD, has the advantages such as simple to operation, running cost is low.
Technical scheme: present invention process mainly adopts anaerobic pond, Aerobic Pond, dosing flocculation sediment, and is equipped with membrane module filtering technique, realizes especially by following technical scheme:
Livestock and poultry cultivation sewage of the present invention is successively through centralized pool, primary precipitation filtering basin, anaerobic pond, Aerobic Pond, dosing flocculation sedimentation tank, film component device filtering basin, and water purification after filtering reaches TAI HU AREA sewage first discharge standard.Its treatment process specifically comprises the following steps:
1, solid-liquid separation: sewage gathers inflow centralized pool, by grid and mud, remove the solid matters such as animal dung, filtrate enters the process of primary precipitation filtering basin through upflow tube, the solid matter of collection, can be used for plantation and uses as organic fertilizer.Most of organism in sewage can be removed by solid-liquid separation simultaneously, reduce follow-up sewage treatment load and cost, and the blocking of lift pump, pipeline, valve can also be prevented after solid-liquid separation, can work-ing life of extension device.
2, primary precipitation filters: after sewage enters primary precipitation filtering basin, static 1-2 hour, wherein lays filter packing bottom pond, and depth of packing is the graded sand and stone of 80cm, tentatively adsorbs and sedimentation and filtration, primary attachment some flocculated impurities, colloids etc.
3, anaerobic reaction: the sewage after primary precipitation filters enters in anaerobic pond by overflow port, wherein arranges the biological contact filler of microbe carrier in pond and adds plyability microbial preparation, sewage is through biological nitration reaction 8-12 hour.
4, aerobic reaction: the sewage after anaerobic reaction enters in biological Aerobic Pond by overflow port, biological contact filler and the microporous aeration device of microbe carrier are set in pond, wherein the outlet of aerating apparatus is arranged on the bottom of biological Aerobic Pond, the import of aerating apparatus is connected with gas blower, and contact filler is installed on the body top, pond of biological Aerobic Pond.Sewage reacts 5-8 hour in biological Aerobic Pond.
5, dosing flocculation sediment: the sewage through biological aerobic reaction enters in dosing flocculation sedimentation tank by overflow port, first adding alkali regulates pH value to 7-8, then flocculation agent, coagulating agent is added respectively, and add water quality stabilizer and carry out coagulating 1-2 hour, and then add sterilant and carry out disinfection, make its static 3-5 hour.
6, filter: the sewage after dosing flocculation sediment, supernatant liquid enters film component device by pump and carries out filtration treatment, and the water quality of filtrate effluent can reach Taihu Lake livestock and poultry cultivation sewage drainage standard, i.e. TAI HU AREA sewage first discharge standard.
Graded sand and stone of the present invention, the fineness being specially natural river sand is 1-3mm, and pebbles granularity is 1-2cm, and the weight of its medium sand and pebbles is 3:1.
Biological contact filler of the present invention adopts spandex fiber, wherein comprises the microbial film that microorganism is formed.
Plyability microbial preparation of the present invention is compound probiotic, can adopt denitrifying bacteria, nitrifier, yeast, milk-acid bacteria one wherein, preferred nitrifier.
The alkali that adjustment pH value of the present invention adopts is sodium hydroxide.
Flocculation agent of the present invention is polyacrylamide, polymerize aluminum chloride, ferrous sulfate one wherein, optimization polypropylene acid amides.
Coagulating agent of the present invention is Tai-Ace S 150, magnesiumcarbonate one wherein, preferred magnesiumcarbonate.
Water quality stabilizer of the present invention is composite water treatment agent, the preparation of medicament is carried out according to the water-quality guideline after anaerobic-aerobic biochemical treatment, and obtain by the following method, the weight part of its each feed composition is: sodium polyacrylate 25-25, poly-phosphorus iron(ic) chloride 20-25, acrylamide 45-50,2-phosphate-1,2,4-butane tricarboxylate 5-10; Preparation technology is: in the medicament barrel with heating, stirring, first add 500L tap water, during by being warming up to 20-25 DEG C, add sodium polyacrylate, poly-phosphorus iron(ic) chloride more respectively, carry out stirring 40-60min simultaneously, and then add acrylamide, and stir 30min, finally add 2-phosphate-1,2,4-butane tricarboxylate, continuing to stir 30-40min to fully dissolving, namely obtaining required water quality stabilizer (composite water treatment agent).
Sterilant of the present invention is trichloroisocyanuric acid, Surchlor GR 60 one wherein, preferred trichloroisocyanuric acid.
Film component device of the present invention is plate film assembly device or hollow membrane assembly apparatus, preferred plate film assembly device.
Flocculation coagulation of the present invention is through reaction, and the throw out generated is after mud is separated, and filtrate enters the process of primary precipitation filtering basin, and the filter residue produced carries out burning disposal by incinerator.
Beneficial effect: the present invention's one is used for Taihu Lake and enters lake livestock and poultry cultivation sewage treatment process, not only can be the treatment process that livestock and poultry cultivation sewage provides high-efficiency low energy consumption, design utilizes primary precipitation filtration, anaerobic-aerobic biochemistry, dosing flocculation coagulating and membrane module to filter the technology combined, but also have employed and add composite water treatment agent technique, thus reach efficient denitrification, dephosphorization and fall the function of COD, this treatment process also has the effect of decolouring, sterilization simultaneously.Treatment process working cost of the present invention and overhead charges cheap, good sewage processing effect, livestock and poultry cultivation sewage after treatment can reach the TAI HU AREA sewage disposal first discharge standard of national regulation.
Accompanying drawing explanation
Fig. 1 is that a kind of Taihu Lake of the present invention enters lake livestock and poultry cultivation sewage treatment process structural representation;
Fig. 2 is biological Aerobic Pond aerator structure schematic diagram used;
Fig. 3 is the structural representation of membrane module filtration unit.
Embodiment
Embodiment 1
Cultivation scale livestock on hand 4500 pig breeding farms: sewage gathers inflow 150m
3centralized pool, adopt grid and mud, to remove in sewage the solid matters such as excrement class, the solid matter of collection, being used as plantation organic fertilizer uses, and filtrate enters 120m through upflow tube
3primary precipitation filtering basin, wherein lay bottom pond that fineness is 2-6mm, thickness is 80cm filter packing graded sand and stone, within static 1.5 hours, tentatively adsorb and sedimentation and filtration.
Sewage after primary precipitation filters enters 80m by overflow port
3anaerobic pond in, sewage arrange biological spandex fiber filler and add in the anaerobic pond of plyability microbial preparation nitrifier, carry out biological nitration and react 8 hours.
Sewage after anaerobic reaction enters 80m by overflow port
3biological Aerobic Pond in, in the Aerobic Pond of filler and microporous aeration device that biological spandex fiber is set, open gas blower carry out micro-pore aeration, carry out aerobic reaction 6 hours.
Sewage through biological aerobic reaction enters 80m by overflow port
3in dosing flocculation sedimentation tank, first open drug metering pump and add the sodium hydroxide solution that concentration is 30%, regulate pH value to 7.1, then open drug metering pump and add the flocculation agent polyacrylamide 50L that concentration is 5 ‰ respectively, concentration is the coagulating agent magnesiumcarbonate solution 35L of 10%, carry out flocculation coagulating after 1 hour, open drug metering pump, add by sodium polyacrylate, poly-phosphorus iron(ic) chloride, acrylamide, 2-phosphate-1, 2, the composite water quality stabilizer 60L made of 4-butane tricarboxylate, carry out coagulating 0.5 hour, then open drug metering pump and add the sterilant trichloroisocyanuric acid solution 2L that concentration is 2%, after carrying out disinfection, static 3 hours.
Sewage after dosing flocculation sediment, supernatant liquid enters plate film assembly device by pump and carries out filtration treatment, and filtrate flows into 100m
3discharge after clean water basin.
Embodiment 2
Cultivation scale livestock on hand 6000 pig breeding farms: sewage gathers inflow 150m
3centralized pool, adopt grid and mud, to remove in sewage the solid matters such as excrement class, the solid matter of collection, being used as plantation organic fertilizer uses, and filtrate enters 120m through upflow tube
3primary precipitation filtering basin, wherein lay bottom pond that fineness is 2-6mm, thickness is 80cm filter packing graded sand and stone, within static 2 hours, tentatively adsorb and sedimentation and filtration.
Sewage after primary precipitation filters enters 80m by overflow port
3anaerobic pond in, sewage arrange biological spandex fiber filler and add in the anaerobic pond of plyability microbial preparation milk-acid bacteria, carry out biological nitration and react 10 hours.
Sewage after anaerobic reaction enters 80m by overflow port
3biological Aerobic Pond in, in the Aerobic Pond of filler and microporous aeration device that biological spandex fiber is set, open gas blower carry out micro-pore aeration, carry out aerobic reaction 8 hours.
Sewage through biological aerobic reaction enters 80m by overflow port
3in dosing flocculation sedimentation tank, first open drug metering pump and add the sodium hydroxide solution that concentration is 30%, regulate pH value to 7.2, then open drug metering pump and add the flocculant poly aluminum chloride 80L that concentration is 8 ‰ respectively, concentration is the aluminum sulfate coagulant 50L of 10%, carry out flocculation coagulating after 1.5 hours, open drug metering pump, add by sodium polyacrylate, poly-phosphorus iron(ic) chloride, acrylamide, 2-phosphate-1, 2, the composite water quality stabilizer 90L made of 4-butane tricarboxylate, carry out coagulating 0.5 hour, then open drug metering pump and add the sterilant Surchlor GR 60 solution 3L that concentration is 2%, after carrying out disinfection, static 4 hours.
Sewage after dosing flocculation sediment, supernatant liquid enters plate film assembly device by pump and carries out filtration treatment, and filtrate flows into 100m
3discharge after clean water basin.
Embodiment 3
Cultivation scale livestock on hand 20000 plumage broiler breeding field: sewage gathers inflow 150m
3centralized pool, adopt grid and mud, to remove in sewage the solid matters such as excrement class, the solid matter of collection, being used as plantation organic fertilizer uses, and filtrate enters 120m through upflow tube
3primary precipitation filtering basin, wherein lay bottom pond that fineness is 2-6mm, thickness is 80cm filter packing graded sand and stone, within static 1.5 hours, tentatively adsorb and sedimentation and filtration.
Sewage after primary precipitation filters enters 80m by overflow port
3anaerobic pond in, sewage arrange biological spandex fiber filler and add in the anaerobic pond of plyability microbial preparation nitrifier, carry out biological nitration and react 9 hours.
Sewage after anaerobic reaction enters 80m by overflow port
3biological Aerobic Pond in, in the Aerobic Pond of filler and microporous aeration device that biological spandex fiber is set, open gas blower carry out micro-pore aeration, carry out aerobic reaction 7 hours.
Sewage through biological aerobic reaction enters 80m by overflow port
3in dosing flocculation sedimentation tank, first open drug metering pump and add the sodium hydroxide solution that concentration is 30%, regulate pH value to 7.3, then open drug metering pump and add the flocculation agent polyacrylamide 20L that concentration is 5 ‰ respectively, concentration is the coagulating agent magnesiumcarbonate solution 15L of 10%, carry out flocculation coagulating after 1 hour, open drug metering pump, add by sodium polyacrylate, poly-phosphorus iron(ic) chloride, acrylamide, 2-phosphate-1, 2, the composite water quality stabilizer 40L made of 4-butane tricarboxylate, carry out coagulating 0.5 hour, then open drug metering pump and add the sterilant trichloroisocyanuric acid solution 1.5L that concentration is 2%, after carrying out disinfection, static 3 hours.
Sewage after dosing flocculation sediment, supernatant liquid enters plate film assembly device by pump and carries out filtration treatment, and filtrate flows into 100m
3discharge after clean water basin.
The present invention adopts new technology and by after embodiment, effluent quality reaches following index:
The present invention also passes through embodiment 1 ~ 3, and the sewage quality index after novel method process of adopting new technology reaches shown in following chart, and reaches the TAI HU AREA sewage disposal first discharge standard of national regulation:
The invention provides a kind of thinking and method, the method and access of this technical scheme of specific implementation is a lot, and the above is only the preferred embodiment of the present invention.Should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention; some improvements and modifications can also be made; these improvements and modifications also should be considered within the scope of protection of the present invention, and all available prior art of each integral part not clear and definite in the present embodiment is realized.
Claims (10)
1. enter a lake livestock and poultry cultivation sewage treatment process for Taihu Lake, it is characterized in that: it comprises the following steps,
(1) solid-liquid separation: sewage gathers inflow centralized pool, by grid and mud, remove the solid matters such as animal dung, filtrate enters the process of primary precipitation filtering basin through upflow tube;
(2) primary precipitation filters: after sewage enters primary clarifier, static 1-2 hour, wherein lays filter packing bottom pond, and depth of packing is the graded sand and stone of 80cm, tentatively adsorbs and sedimentation and filtration;
(3) anaerobic reaction: the sewage after primary precipitation filters enters in anaerobic pond by overflow port, wherein arranges the biological contact filler of microbe carrier and adds plyability microbial preparation in pond, sewage is through biological nitration reaction 8-12 hour;
(4) aerobic reaction: the sewage after anaerobic reaction enters in biological Aerobic Pond by overflow port, contact filler and the microporous aeration device of microbe carrier are set in pond, wherein the outlet of aerating apparatus is arranged on the bottom of biological Aerobic Pond, the import of aerating apparatus is connected with gas blower, contact filler is arranged at the body top, pond of biological Aerobic Pond, and sewage reacts 5-8 hour in biological Aerobic Pond;
(5) dosing flocculation sediment: the sewage aerobic through biological enters in dosing flocculation sedimentation tank by overflow port, first adding alkali regulates pH value to 7-8, then flocculation agent, coagulating agent is added respectively, and add water quality stabilizer and carry out coagulating 1-2 hour, and then add sterilant and carry out disinfection, make its static 3-5 hour;
(6) membrane filtration process: the sewage after dosing flocculation sediment, supernatant liquid enters film component device by pump and carries out filtration treatment, and filtrate is discharged after flowing into clean water basin.
2. one according to claim 1 enters lake livestock and poultry cultivation sewage treatment process for Taihu Lake, it is characterized in that: described graded sand and stone, the fineness being specially natural river sand is 1-3mm, and pebbles granularity is 1-2cm, and the weight of its medium sand and pebbles is 3:1.
3. one according to claim 1 enters lake livestock and poultry cultivation sewage treatment process for Taihu Lake, it is characterized in that: described biological contact filler adopts spandex fiber, wherein comprises the microbial film that microorganism is formed.
4. one according to claim 1 enters lake livestock and poultry cultivation sewage treatment process for Taihu Lake, it is characterized in that: described plyability microbial preparation is compound probiotic, be specially denitrifying bacteria, nitrifier, yeast, milk-acid bacteria one wherein, preferred nitrifier.
5. one according to claim 1 enters lake livestock and poultry cultivation sewage treatment process for Taihu Lake, it is characterized in that: the alkali that described adjustment pH value adopts is sodium hydroxide.
6. one according to claim 1 enters lake livestock and poultry cultivation sewage treatment process for Taihu Lake, it is characterized in that: the flocculation agent of described employing is polyacrylamide, polymerize aluminum chloride, ferrous sulfate one wherein, optimization polypropylene acid amides.
7. one according to claim 1 enters lake livestock and poultry cultivation sewage treatment process for Taihu Lake, it is characterized in that: the coagulating agent of described employing is Tai-Ace S 150 or magnesiumcarbonate, preferred magnesiumcarbonate.
8. one according to claim 1 enters lake livestock and poultry cultivation sewage treatment process for Taihu Lake, it is characterized in that: described water quality stabilizer is composite water treatment agent, the preparation of medicament is carried out according to the water-quality guideline after anaerobic-aerobic biochemical treatment, its water quality stabilizer obtains by the following method, the weight part of its each feed composition is: sodium polyacrylate 25-25, poly-phosphorus iron(ic) chloride 20-25, acrylamide 45-50,2-phosphate-1,2,4-butane tricarboxylate 5-10; Preparation technology is: in the medicament barrel with heating, stirring, first add 500L tap water, during by being warming up to 20-25 DEG C, add sodium polyacrylate, poly-phosphorus iron(ic) chloride more respectively, carry out stirring 40-60min simultaneously, and then add acrylamide, and stir 30min, finally add 2-phosphate-1,2,4-butane tricarboxylate, continuing to stir 30-40min to fully dissolving, namely obtaining required water quality stabilizer (composite water treatment agent).
9. one according to claim 1 enters lake livestock and poultry cultivation sewage treatment process for Taihu Lake, it is characterized in that: described sterilant is trichloroisocyanuric acid or Surchlor GR 60, preferred trichloroisocyanuric acid.
10. one according to claim 1 enters lake livestock and poultry cultivation sewage treatment process for Taihu Lake, it is characterized in that: described film component device is that plate film assembly device closes hollow membrane assembly apparatus, preferred plate film assembly device.
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| CN115893767A (en) * | 2023-01-06 | 2023-04-04 | 中国水产科学研究院黄海水产研究所 | Circulating aquaculture system capable of synchronously removing nitrogen and phosphorus in water |
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