CN106986470B - Livestock and poultry breeding sewage treatment zero-emission and organic fertilizer recycling system and technology thereof - Google Patents
Livestock and poultry breeding sewage treatment zero-emission and organic fertilizer recycling system and technology thereof Download PDFInfo
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- CN106986470B CN106986470B CN201710366291.XA CN201710366291A CN106986470B CN 106986470 B CN106986470 B CN 106986470B CN 201710366291 A CN201710366291 A CN 201710366291A CN 106986470 B CN106986470 B CN 106986470B
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- 239000010865 sewage Substances 0.000 title claims abstract description 85
- 239000003895 organic fertilizer Substances 0.000 title claims abstract description 30
- 244000144972 livestock Species 0.000 title claims abstract description 25
- 244000144977 poultry Species 0.000 title claims abstract description 18
- 238000009395 breeding Methods 0.000 title claims abstract description 14
- 230000001488 breeding effect Effects 0.000 title claims abstract description 14
- 238000004064 recycling Methods 0.000 title abstract description 9
- 238000005516 engineering process Methods 0.000 title description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 91
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 239000012528 membrane Substances 0.000 claims abstract description 24
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 23
- 238000011084 recovery Methods 0.000 claims abstract description 15
- 239000007787 solid Substances 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 claims abstract description 11
- 239000012535 impurity Substances 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims abstract description 10
- 238000000926 separation method Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000003337 fertilizer Substances 0.000 claims abstract description 5
- 238000011045 prefiltration Methods 0.000 claims description 17
- 239000012141 concentrate Substances 0.000 claims description 4
- 238000007667 floating Methods 0.000 claims description 4
- 238000009304 pastoral farming Methods 0.000 claims description 4
- 238000009374 poultry farming Methods 0.000 claims description 4
- 239000000706 filtrate Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 claims description 2
- 238000006297 dehydration reaction Methods 0.000 claims description 2
- 238000004065 wastewater treatment Methods 0.000 claims 1
- 238000004140 cleaning Methods 0.000 abstract description 3
- 235000015097 nutrients Nutrition 0.000 description 5
- 238000009435 building construction Methods 0.000 description 3
- 210000003608 fece Anatomy 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 239000010871 livestock manure Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F7/00—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a livestock and poultry breeding sewage treatment zero-emission and organic fertilizer recovery system and a treatment process thereof, wherein the system comprises the following steps: the system comprises a solid-liquid separation system for primarily separating solid and liquid in sewage, a prefiltering system for removing larger particle impurities, a tubular ultrafiltration membrane system for further removing smaller particle impurities, and a multistage RO system for multistage filtration and concentration, wherein after the cultivation sewage sequentially passes through the systems, clear water meeting national sewage discharge standards and liquid organic fertilizer capable of being used as fertilizer are obtained. After the technical scheme is adopted to treat livestock and poultry raising sewage, the quality of the obtained clear water can reach the sewage discharge standard and the reclaimed water recycling standard, solid and liquid organic fertilizer can be obtained, the pollution to the environment is avoided, the utilization rate of the sewage is improved, the automatic operation of the whole system and the automatic cleaning of each system can be realized, the labor cost is reduced, and the treatment process is simple.
Description
Technical Field
The invention relates to the field of sewage treatment, in particular to a livestock and poultry breeding sewage treatment zero-emission and organic fertilizer recovery system and a treatment process thereof.
Background
The discharge amount of the manure and the sewage of the livestock and poultry farms is large every day, and if the discharged sewage is treated without reaching the standard or being directly discharged without treatment, that is, the pollutants such as COD, suspended matters, ammonia nitrogen, total phosphorus and the like in the discharged sewage are seriously out of standard, the surrounding environment is seriously polluted. In addition, the discharged sewage also contains some available nutrients, such as organic fertilizer, and if the discharged sewage is directly discharged or not recycled, the environment is polluted, and meanwhile, some organic fertilizer is lost, so that the sewage cannot be fully utilized. There is a need for a system and process for treating and recycling wastewater to avoid environmental pollution.
Disclosure of Invention
Aiming at the technical problems, the invention aims to provide a livestock and poultry breeding sewage treatment zero-emission and organic fertilizer recovery system, after sewage is treated by adopting the system, the water quality can reach the sewage emission standard and the reclaimed water recycling standard, solid and liquid organic fertilizers can be obtained, the pollution to the environment is avoided, and the utilization rate of the sewage is improved.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows: a livestock and poultry breeding sewage treatment zero emission and organic fertilizer recovery system comprises:
the solid-liquid separation system is provided with a sewage collecting tank, and after the solid and the liquid in the sewage are primarily separated, the obtained filtrate is collected in the sewage collecting tank;
the prefilter system comprises a prefilter and a first collecting barrel, wherein the prefilter prefilters sewage in the sewage collecting tank, and after impurities with larger particles are removed, the filtered sewage is stored in the first collecting barrel;
the tubular ultrafiltration membrane system comprises a tubular ultrafiltration membrane and a second collecting barrel, the tubular ultrafiltration membrane removes impurities with the particle size of more than 10 mu m in the sewage of the first collecting barrel, and the ultrafiltered sewage is collected in the second collecting barrel;
the multi-stage RO system comprises a multi-stage RO, a plurality of collecting barrels and a clear water barrel, wherein the multi-stage RO carries out multi-stage filtration and concentration on sewage in the second collecting barrel, the obtained filtered water is stored in the clear water barrel, and the final concentrated solution is dehydrated to prepare the liquid organic fertilizer.
Further, the multi-stage RO system comprises a first-stage RO system, a second-stage RO system, a DTRO system, a third collecting barrel, a fourth collecting barrel, a fifth collecting barrel and a clear water barrel, wherein a water inlet of the first-stage RO system is connected with a water outlet of the second collecting barrel, filtered water obtained after filtration is collected in the third collecting barrel, and obtained concentrated solution is collected in the fourth collecting barrel; the water outlet of the third collecting barrel is connected with the water inlet of the second-stage RO system, and the clear water obtained after the filtration is collected in the clear water barrel; the water outlet of the fourth collecting barrel is connected with the water inlet of the DTRO system, the concentrated solution after being concentrated by the DTRO system is collected in the fifth collecting barrel, and the liquid organic fertilizer is prepared after dehydration and concentration.
Further, after the second RO system filters and concentrates the filtered water in the third collecting tank, the concentrated solution is returned to the second collecting tank for circulating filtration and concentration.
Further, the DTRO system returns the filtered water obtained when the concentrate in the fourth collecting tank is treated to the third collecting tank, and the filtered water is filtered and concentrated again by the secondary RO system.
Further, the recovery system also comprises a control system, and the control system is used for controlling the automatic operation of the solid-liquid separation system, the prefilter system, the tubular ultrafiltration membrane system and the multistage RO system.
Further, a lifting pump is arranged in each of the sewage collecting tank and/or the first collecting barrel and/or the second collecting barrel and/or the third collecting barrel and/or the fourth collecting barrel, and sewage, filtered water or concentrated solution is pumped to a water inlet of a corresponding next-stage system through the lifting pump.
Further, a liquid level controller is further arranged in the sewage collecting tank and/or the first collecting barrel and/or the second collecting barrel and/or the third collecting barrel and/or the fourth collecting barrel, the liquid level controller is a liquid level floating ball, and the liquid level controller automatically controls the opening and closing of each lifting pump by monitoring the actual water level in the sewage collecting tank and each collecting barrel.
Further, a filter screen is arranged in the prefilter, and the pore diameter of the filter screen is 0.5-0.8 mm.
Furthermore, a return pipe is respectively arranged between the clean water bucket and the tubular ultrafiltration membrane system, the primary RO system, the secondary RO system and the DTRO system, and when the systems stop running and sewage is emptied, filtered water in the clean water bucket flows back to the systems through the corresponding return pipes and is cleaned.
Further, the filtered water in the water purifying bucket can be used for flushing livestock houses, ground, roads, vehicles, building construction, urban greening, fire protection and the like after being disinfected by ultraviolet rays.
The invention also aims to provide a treatment process for zero emission and organic fertilizer recovery of livestock and poultry breeding sewage, which adopts the technical scheme to treat the livestock and poultry breeding sewage.
By adopting the technical means, the invention has the following beneficial effects: the sewage is treated by combining modes of prefiltering, ultrafiltration, reverse osmosis, membrane concentration and the like, the water quality can reach the sewage discharge standard (refer to the pollutant discharge standard of livestock and poultry farming (GB/T18596-2001)), the reclaimed water reuse standard (refer to the water quality of urban sewage recycling urban miscellaneous Water (GB/T18920-2002) for partial water quality standard of flushing livestock houses, floors, roads, vehicles, urban greening, building construction, fire fighting and the like) can also be reached, meanwhile, solid and liquid organic fertilizers can be obtained, the pollution to the environment is avoided, the utilization rate of sewage is improved, the automatic operation of the whole system and the automatic cleaning of each system can be realized, the labor cost is reduced, and the treatment process is simple.
Drawings
FIG. 1 is a schematic flow chart of the present invention.
Detailed Description
The invention will be further illustrated with reference to specific examples.
As shown in fig. 1, a livestock and poultry farming sewage treatment zero emission and organic fertilizer recovery system comprises the following systems: a solid-liquid separation system for primarily separating solids from liquids in wastewater, a prefilter system for removing larger particulate impurities, a tubular ultrafiltration membrane system for further removing smaller particulate impurities, and a multistage RO system for multistage filtration and concentration.
After solid-liquid separation is carried out on livestock and poultry breeding manure sewage to obtain solid organic fertilizer and pretreatment of a methane tank, biogas slurry (i.e. filtrate) is collected in a sewage collecting tank, and the sewage collecting tank has the functions of regulating stable water quantity, balancing water quality and the like besides collecting sewage. The sewage collecting tank is internally provided with a lifting pump, a liquid level controller and the like, the liquid level controller can adopt a liquid level floating ball and the like, and the water level of the sewage collecting tank is monitored through the liquid level controller, so that the lifting pump is automatically controlled to be started and stopped. The sewage in the collecting tank is pumped to the water inlet of the prefilter through the lift pump, the sewage collecting tank can be arranged at a higher position, the sewage flows to the water inlet of the prefilter by gravity, the sewage filtered by the prefilter enters the first collecting barrel, the water outlet of the first collecting barrel is connected with the water inlet of the tubular ultrafiltration membrane, impurities (such as suspended matters, insoluble colloid and the like) with the particle size of more than 10 mu m can be removed through the tubular ultrafiltration membrane, and filtered water is collected in the second collecting barrel. Wherein, the prefilter can be provided with a filter screen with 0.5-0.8 mm to filter the impurities with larger particles, and the prefilter is arranged in front of the tubular ultrafiltration membrane to remove the impurities with larger particles in the sewage so as to avoid blocking or damaging the tubular ultrafiltration membrane, namely, the prefilter is used as a security filter of the tubular ultrafiltration membrane.
The advantage of using a tubular ultrafiltration membrane after prefiltering is: the pretreatment requirements on materials and liquid are relatively simple, and hard particle substances which directly damage the membrane can be removed by a filter screen with 0.5-0.8 mm, so that the pretreatment is simple, the input cost is saved, and the operation cost is saved. For treating high-solid matter, high-concentration material and liquid, the tubular film has remarkable capability, is not afraid of blockage, is not easy to generate concentration polarization, can adjust the flow rate in a large range, and can ensure the treatment capability.
After that, in order to ensure that the treated water quality can reach the national sewage discharge standard, a multi-stage RO system is arranged behind the tubular ultrafiltration membrane, the arrangement of the stages can be determined according to actual requirements, and the invention takes a two-stage RO system and a DTRO system as an example, and specifically comprises the following steps:
the water outlet of the second collecting barrel is connected with the water inlet of the first RO system, the water outlet of the third collecting barrel is connected with the water inlet of the second RO system, filtered water produced by the first RO system enters the third collecting barrel and then enters the second RO system for treatment, so that the water quality of the water reaches the national standard of urban wastewater recycling urban miscellaneous Water quality (GB/T18920-2002), the filtered water treated by the second RO system is collected in the clear water barrel, and can be reused after ultraviolet disinfection, and can be used for flushing livestock houses, grounds, roads, vehicles, building construction, urban greening, fire fighting and the like, thereby improving the utilization rate of original sewage.
The concentrated solution processed by the primary RO system is stored in the fourth collecting barrel, then the concentrated solution can be pumped into the water inlet of the DTRO system through the lifting pump, or the water outlet of the fourth collecting barrel is directly connected with the water inlet of the DTRO system, preferably, the filtered water processed by the DTRO system enters the third collecting barrel to improve the utilization rate of the water, the concentrated solution is processed by the secondary RO system to ensure the stable and reliable water quality of the discharged water, and the concentrated solution processed by the DTRO system is stored in the fifth collecting barrel, so that the concentrated solution can be further dehydrated and concentrated to be manufactured into liquid organic fertilizer, and the fertilizer efficiency is improved by increasing the nutrient concentration of the liquid organic fertilizer. In this way, the nutrients in the sewage can be highly concentrated for recycling.
In addition, in order to improve the water yield of the first-stage RO system, the concentrated solution processed by the second-stage RO system is returned to the second collecting barrel and recycled for the first-stage RO, the second-stage RO, the DTRO and other system processing, so as to further improve the water quality after the processing and recycle the nutrients in the sewage.
In addition, a lifting pump can be arranged in one, more or all of the first collecting barrel, the second collecting barrel, the third collecting barrel and the fourth collecting barrel, and sewage, filtered water or concentrated solution can be pumped to a water inlet of a corresponding next-stage system through the lifting pump, so that the systems can be arranged on the same horizontal line, and the whole is more attractive; a liquid level controller can be further arranged, the liquid level controller can adopt a liquid level floating ball and the like, and the liquid level controller is used for monitoring the water level in each collecting barrel, so that the opening and closing of the lifting pump can be automatically controlled.
In order to further improve the automation degree of the whole system and save the labor cost, the invention can adopt manual control, can also be provided with a control system, and can automatically control all other systems so as to realize the automatic operation of the whole system.
In addition, a return pipe is respectively arranged between the clean water bucket and the tubular ultrafiltration membrane system, the primary RO system, the secondary RO system and the DTRO system, and when the tubular ultrafiltration membrane system, the primary RO system, the secondary RO system and the DTRO system stop running and sewage is emptied, filtered water in the clean water bucket flows back to each system through the corresponding return pipe and is cleaned.
By adopting the technical scheme of the invention, solid-liquid separation can be carried out on the livestock and poultry breeding manure sewage to obtain solid organic fertilizer, then the solid organic fertilizer is treated by a prefilter and a tubular ultrafiltration membrane, and then the solid organic fertilizer is matched with a primary RO system, a secondary RO system, a DTRO system and the like to obtain the standard meeting the national pollution discharge standard and the urban miscellaneous water quality, and the liquid organic fertilizer with higher concentration can be obtained, so that the zero emission of the sewage is realized, the environmental pollution is avoided, the nutrients of the sewage can be concentrated into the liquid organic fertilizer for recycling, the utilization rate of the sewage is improved, the automatic operation of the whole system and the automatic cleaning of each system can be realized, and the labor cost is reduced.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. Livestock and poultry breeding sewage treatment zero release and fertilizer recovery system, characterized by comprising: the solid-liquid separation system is provided with a sewage collecting tank, and after the solid and the liquid in the sewage are primarily separated, the obtained filtrate is collected in the sewage collecting tank;
the pre-filtering system comprises a pre-filter and a first collecting barrel, wherein a filter screen is arranged in the pre-filter; the prefilter prefilters the sewage in the sewage collecting tank, and after removing impurities with larger particles, the filtered sewage is stored in the first collecting barrel;
the tubular ultrafiltration membrane system comprises a tubular ultrafiltration membrane and a second collecting barrel, the tubular ultrafiltration membrane removes impurities with the particle size of more than 10 mu m in the sewage of the first collecting barrel, and the ultrafiltered sewage is collected in the second collecting barrel;
the multi-stage RO system comprises a multi-stage RO, a plurality of collecting barrels and a clear water barrel, wherein the multi-stage RO carries out multi-stage filtration and concentration on sewage in the second collecting barrel, the obtained filtered water is stored in the clear water barrel, and the final concentrated solution is dehydrated to prepare liquid organic fertilizer; the multi-stage RO system comprises a first-stage RO system, a second-stage RO system, a DTRO system, a third collecting barrel, a fourth collecting barrel, a fifth collecting barrel and a clear water barrel, wherein a water inlet of the first-stage RO system is connected with a water outlet of the second collecting barrel, filtered water obtained after filtration is collected in the third collecting barrel, and obtained concentrated solution is collected in the fourth collecting barrel; the water outlet of the third collecting barrel is connected with the water inlet of the second-stage RO system, and the clear water obtained after the filtration is collected in the clear water barrel; the water outlet of the fourth collecting barrel is connected with the water inlet of the DTRO system, the concentrated solution after being concentrated by the DTRO system is collected in the fifth collecting barrel, and the liquid organic fertilizer is prepared after dehydration and concentration;
the second-stage RO system filters and concentrates the filtered water in the third collecting barrel, and returns concentrated solution to the second collecting barrel for circulating filtration and concentration;
the DTRO system returns the filtered water obtained when the concentrated solution in the fourth collecting barrel is processed to the third collecting barrel, and the filtered water is filtered and concentrated again through the secondary RO system.
2. The livestock and poultry wastewater treatment zero-emission and organic fertilizer recovery system of claim 1, wherein the recovery system further comprises a control system by which the automatic operation of the solid-liquid separation system, the prefilter system, the tubular ultrafiltration membrane system, and the multistage RO system is controlled.
3. A livestock and poultry farming sewage treatment zero release and organic fertilizer recovery system according to claim 1 or 2, wherein each of said sewage collection tanks and/or first and/or second and/or third and/or fourth collection tanks is provided with a lift pump by means of which sewage, filtered water or concentrate is pumped to the water inlet of the respective next stage system.
4. The livestock and poultry raising sewage treatment zero-emission and organic fertilizer recovery system according to claim 3, wherein a liquid level controller is further arranged in the sewage collecting tank and/or the first collecting barrel and/or the second collecting barrel and/or the third collecting barrel and/or the fourth collecting barrel, the liquid level controller is a liquid level floating ball, and the liquid level controller automatically controls the opening and closing of each lifting pump by monitoring the actual water level in the sewage collecting tank and each collecting barrel.
5. A livestock and poultry farming sewage treatment zero-emission and organic fertilizer recovery system as claimed in claim 3, wherein a return pipe is arranged between the clean water barrel and the tubular ultrafiltration membrane system, the primary RO system, the secondary RO system and the DTRO system respectively, and when each system stops running and the sewage is emptied, the filtered water in the clean water barrel returns to each system through the corresponding return pipe and is cleaned.
6. A treatment process for livestock and poultry breeding sewage treatment zero emission and organic fertilizer recovery, which is characterized in that the livestock and poultry breeding sewage treatment zero emission and organic fertilizer recovery system as claimed in any one of claims 1 to 5 is adopted for treating livestock and poultry breeding sewage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710366291.XA CN106986470B (en) | 2017-05-23 | 2017-05-23 | Livestock and poultry breeding sewage treatment zero-emission and organic fertilizer recycling system and technology thereof |
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| CN201710366291.XA CN106986470B (en) | 2017-05-23 | 2017-05-23 | Livestock and poultry breeding sewage treatment zero-emission and organic fertilizer recycling system and technology thereof |
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| CN106986470B true CN106986470B (en) | 2023-04-25 |
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| CN110433564B (en) * | 2019-08-08 | 2021-08-31 | 深圳市环水清源生态环保技术有限公司 | Livestock sewage treatment equipment |
| CN110550787B (en) * | 2019-08-20 | 2021-12-07 | 生态环境部华南环境科学研究所 | Desalting treatment equipment and method for fertilizer utilization of cow breeding wastewater |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003086977A1 (en) * | 2002-04-09 | 2003-10-23 | Institut National De La Recherche Scientifique | Methods and apparatus for treating animal manure |
| CN101696071A (en) * | 2009-10-23 | 2010-04-21 | 中冶赛迪工程技术股份有限公司 | Zero-discharge treatment process for industrial wastewater of iron and steel plant |
| CN102010112A (en) * | 2010-09-27 | 2011-04-13 | 南京宏博环保实业有限公司 | Method for treating livestock wastes |
| CN105836984A (en) * | 2016-06-20 | 2016-08-10 | 山东民和生物科技股份有限公司 | Multi-stage circulation utilization system and method of culture excrement |
| CN206985861U (en) * | 2017-05-23 | 2018-02-09 | 厦门科滤膜技术有限公司 | A kind of livestock and poultry cultivation sewage disposal zero-emission and organic fertilizer recovery system |
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- 2017-05-23 CN CN201710366291.XA patent/CN106986470B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003086977A1 (en) * | 2002-04-09 | 2003-10-23 | Institut National De La Recherche Scientifique | Methods and apparatus for treating animal manure |
| CN101696071A (en) * | 2009-10-23 | 2010-04-21 | 中冶赛迪工程技术股份有限公司 | Zero-discharge treatment process for industrial wastewater of iron and steel plant |
| CN102010112A (en) * | 2010-09-27 | 2011-04-13 | 南京宏博环保实业有限公司 | Method for treating livestock wastes |
| CN105836984A (en) * | 2016-06-20 | 2016-08-10 | 山东民和生物科技股份有限公司 | Multi-stage circulation utilization system and method of culture excrement |
| CN206985861U (en) * | 2017-05-23 | 2018-02-09 | 厦门科滤膜技术有限公司 | A kind of livestock and poultry cultivation sewage disposal zero-emission and organic fertilizer recovery system |
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| CN106986470A (en) | 2017-07-28 |
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