CN104150659A - EPN (Ethyl P Nitrophenyl Phenylphosphonothioate) livestock breeding sewage disposal system - Google Patents
EPN (Ethyl P Nitrophenyl Phenylphosphonothioate) livestock breeding sewage disposal system Download PDFInfo
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- CN104150659A CN104150659A CN201410393132.5A CN201410393132A CN104150659A CN 104150659 A CN104150659 A CN 104150659A CN 201410393132 A CN201410393132 A CN 201410393132A CN 104150659 A CN104150659 A CN 104150659A
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Abstract
The invention relates to an EPN (Ethyl P Nitrophenyl Phenylphosphonothioate) livestock breeding sewage disposal system. The EPN livestock breeding sewage disposal system comprises a centrifugal extrusion solid-liquid separating system, a water feeding system, an EPN electrochemical generator, a dosing system, a floatation system, a sludge drying system, an EPN acousto-optical chemical water quality super oxidization system and a post-treatment water quality stabilization system. A method for implementing the system comprises the following steps: removing large suspended solids (SS) through solid-liquid separation, reducing COD (Chemical Oxygen Demand) and SS in a water body, and scraping flocculates in the water body on the surface to remove the SS in the water; removing heavy metals and antibiotics in sewage and reducing the COD, BOD (Biochemical Oxygen Demand) and ammonia nitrogen through an EPN electrochemical generator, and combining impurities into flocculates in a collision way; effectively grabbing and floating small SS in water through the floatation system, and removing the flocculates formed in the EPN electrochemical generator; and filtering sand carbon through post-treatment, and stabilizing the water quality through the EPN acousto-optical chemical water quality super oxidization system in order to discharge the sewage up to a certain standard and recycle the sewage.
Description
Technical field
The present invention relates to livestock and poultry cultivation sewage treatment area, be specifically related to a kind of EPN livestock and poultry cultivation blowdown treatment system.
Background technology
What main application was processed in traditional livestock and poultry cultivation blowdown is the method for biochemical treatment, and biochemical processing method is most suitable sewage disposal approach in theory, but in large-scale livestock and poultry cultivation blowdown is processed, its treatment effect is performed poor.Major cause is as follows: 1, the biochemical reaction cycle long, cause site requirements large, civil engineering is many, investment is large, and most of breeding enterprise cannot reach the condition of biochemical treatment qualified discharge, 2, biochemical reaction is subject to ectocine large, as outside atmospheres such as temperature, causes the sharply variation for the treatment of cycle, even makes its inefficacy, 3, the processing of biochemical reaction mainly produces at biochemical reaction tank, and its outdoor open processing causes the secondary pollutions such as infiltration, exhaust gas emission, 4, the biological bacteria group of biochemical reaction is higher to environmental requirements such as water quality, and the variation that microcosmic situation occurs is difficult to control, 5, microbiotic is as a kind of spectrum antibiotic, worldwide be widely used in the diseases prevention and treatment of livestock and poultry farms in scale animal bacterial infection, owing to thering is highly water-soluble, the feature such as be difficult for degraded in environment and easily accumulate, in livestock breeding wastewater, residual microbiotic can produce huge ecological toxicological effect, because microbiotic has strong restraining effect to bioprocess, conventional livestock and poultry cultivation blowdown treatment technology, in line or the reuse of the general employing of water after processing, but in water body, still contain part ammonia nitrogen, COD, BOD, microbiotic, intestinal bacteria and bacterial micro-organism etc., cause water body rotten between staging life at clean water basin, as water body reddens, bacteria breed, produce stench etc., and antibiotic cannot removal causes the secondary pollution that a large amount of enrichments of surface water microbiotic have caused water body.Heavy metal in livestock and poultry blowdown, microbiotic, oil slick have strong restraining effect to biological bacteria, cause wastewater treatment efficiency not good, and heavy metal, antibiotic discharge are also the threats huge to environment simultaneously.
Summary of the invention
The object of the invention is to be improved according to the shortcoming existing in background technology and problem, a kind of can overall treatment dirty water pollutant is provided, and the EPN livestock and poultry cultivation blowdown treatment system of obvious processing effect.
Technical scheme of the present invention is to provide a kind of EPN livestock and poultry cultivation blowdown treatment system, comprises centrifugal extruding type solid-liquid separation system, water inlet system, EPN electrochemical generator, medicine system, floating system, sludge dry system, aftertreatment water conditioning system, the super oxidation system 34 of EPN acousto-optic chemistry water quality; Wherein:
Centrifugal extruding type solid-liquid separation system, comprises solid-liquid separating machine 1, for removing the larger suspended substance of water body, reduces COD and SS in water body, makes back segment process simultaneously and can not produce precipitation or stop up;
Water inlet system, comprises spiral pump 4, for by the sewage transport after solid-liquid separation to EPN electrochemical generator;
EPN electrochemical generator, comprise the EPN pre-treatment tank 1 being connected successively by pipeline, EPN pre-treatment tank 26, EPN electrochemistry main frame 7, EPN aftertreatment tank 1 and EPN aftertreatment tank 2 12, described EPN pre-treatment 1, EPN pre-treatment 26 is for mixing well sewage, pressure regulation and Balancing degree, in described EPN electrochemistry main frame 7, produce electrooxidation, electroreduction, electricity decolouring, electricity flocculation, electricity floating electrochemical reaction, for removing most of heavy metal of sewage, microbiotic and reduction COD, BOD, ammonia nitrogen, and by exchange pole plate 9, interceptor 10 makes impurity collision be combined into throw out, described EPN aftertreatment tank 1 and EPN aftertreatment tank 2 12, by the PAC adding, PAM fully mixes with sewage, make the SS in sewage form larger throw out,
Medicine system, comprises PAM automatic medicament feeding machine 13, PAC automatic medicament feeding machine 16, for respectively PAM, PAC being mixed well to rear injection EPN aftertreatment tank 1 and EPN aftertreatment tank 2 12;
Floating system, comprise cavitation air flotation 20, the floating case 27 that removes of molten air supporting, for squeezing into bubble to water fast, accelerate throw out collision, effectively capture and float the less suspended substance in dewatering, and remove the throw out forming in EPN aftertreatment tank 1 and EPN aftertreatment tank 2 12;
Sludge dry system, comprises pressure filter 29, for the body refuse press filtration that floating system is discharged;
Aftertreatment water conditioning system, comprise aftertreatment filter tank 1, aftertreatment filter tank 2 32, aftertreatment filter tank 1 is for passing through carbon granule impurity screening, aftertreatment filter tank 2 32 is eliminated and is further removed COD, BOD and the ammonia nitrogen in water body by micro-electrolysis, and then water purification enters the super oxidation system 34 of EPN acousto-optic chemistry water quality;
The super oxidation system 34 of EPN acousto-optic chemistry water quality, comprise ozone unit 33, Catalyzed by Ultrasonic Wave unit 35, ultraviolet clean unit 36, take ozone as catalyzer, making full use of ultrasonic cavitation effect forms advanced oxidation with the hydrogen peroxide synthesis of hydroxy free radical producing in photochemical catalysis and reacts, COD, BOD, ammonia-nitrogen content be can efficiently reduce, and water burning, free-radical oxidn utilized, high temperature pyrolysis, and supercritical oxidation is in one.Have well sterilization effect widely, the microbiotic of comprehensively removing in breeding wastewater pollutes and kills bacterium and worm's ovum, makes the final qualified discharge of water purification.
Advantage of the present invention and beneficial effect:
First the present invention removes larger suspended substance by solid-liquid separation, reduces COD and SS in water body, by surface, strikes off the throw out in water body, removes SS in water body; Then by EPN electrochemical generator, remove heavy metal, the microbiotic in sewage and reduce COD, BOD, ammonia nitrogen, and making impurity collision be combined into throw out; By floating system, effectively capture and float the less suspended substance in dewatering again, and remove the throw out forming in EPN electrochemical generator; The throw out striking off in water body by surface is removed SS in water body; And after processing by the super oxidation system of water quality (the acousto-optic chemical system that ozone, ultrasonic wave, uv irradiating form) and sand carbon filter and carry out water conditioning, can realize qualified discharge and reuse, and can remove microbiotic and heavy metal comprehensively, realize water body reuse and qualified discharge.It is major technique that whole process realizes physical treatment, is not subject to heavy metal and microbiotic enrichment and weather influence in livestock breeding wastewater, and processing efficiency is high, and whole process only needs 25 minutes, and floor space is little.
Microbiotic is as a kind of broad-spectrum antibiotics, worldwide be widely used in the diseases prevention and treatment of livestock and poultry farms in scale animal bacterial infection, owing to thering is highly water-soluble, the feature such as be difficult for degraded in environment and easily accumulate, in livestock breeding wastewater, residual microbiotic can produce huge ecological toxicological effect, because microbiotic has strong restraining effect to bioprocess, conventional livestock and poultry cultivation blowdown treatment technology, in line or the reuse of the general employing of water after processing, but in water body, still contain part ammonia nitrogen, COD, BOD, microbiotic, intestinal bacteria and bacterial micro-organism etc., cause water body rotten between staging life at clean water basin, as water body reddens, bacteria breed, produce stench etc., and antibiotic cannot removal causes the secondary pollution that a large amount of enrichments of surface water microbiotic have caused water body.EPN livestock and poultry blowdown treatment system is processed livestock and poultry blowdown targetedly with the treatment scheme of full materialization, treatment effect is better than traditional biochemical treatment, can go out the pollutents such as oil slick in water body, oil-soluble grease, heavy metal, microbiotic, it is processed and is not subject to ectocine simultaneously.Can remove heavy metal and microbiotic in sewage water body comprehensively; Can thoroughly remove the oil slick in sewage; Can abolish fast all kinds of oil in water emulsions, oil-soluble grease; Efficiently killing pathogenic bacteria, virus and remove peculiar smell; Can the various inorganic or organic pigments of effective elimination; Suspended solids in can rapid separated sewage; Can be oxidized the organic pollutant of difficult degradation; Occupation area of equipment is little, and infrastructure project is few; Automatic Control, once debugs long-time running, can save in a large number manual operation amount; Closed is processed, and reaction is fast, and the treatment time is short, at utmost reduces secondary pollution.
Accompanying drawing explanation
Fig. 1 is schematic flow sheet of the present invention.
Embodiment
From Fig. 1-4, the present invention includes centrifugal extruding type solid-liquid separation system, water inlet system, EPN electrochemical generator, medicine system, floating system, sludge dry system, aftertreatment water conditioning system, the super oxidation system 34 of EPN acousto-optic chemistry water quality; Wherein:
Centrifugal extruding type solid-liquid separation system, comprises solid-liquid separating machine 1, for removing the larger suspended substance of water body, reduces COD and SS in water body, makes back segment process simultaneously and can not produce precipitation or stop up;
Water inlet system, comprises spiral pump 4, for by the sewage transport after solid-liquid separation to EPN electrochemical generator;
EPN electrochemical generator, comprise the EPN pre-treatment tank 1 being connected successively by pipeline, EPN pre-treatment tank 26, EPN electrochemistry main frame 7, EPN aftertreatment tank 1 and EPN aftertreatment tank 2 12, described EPN pre-treatment 1, EPN pre-treatment 26 is for mixing well sewage, pressure regulation and Balancing degree, in described EPN electrochemistry main frame 7, produce electrooxidation, electroreduction, electricity decolouring, electricity flocculation, electricity floating electrochemical reaction, for removing the heavy metal of sewage, microbiotic and reduction COD, BOD, ammonia nitrogen, and by exchange pole plate 9, interceptor 10 makes impurity collision be combined into throw out, described EPN aftertreatment tank 1 and EPN aftertreatment tank 2 12, by the PAC adding, PAM fully mixes with sewage, make the SS in sewage form larger throw out,
Medicine system, comprises PAM automatic medicament feeding machine 13, PAC automatic medicament feeding machine 16, for respectively PAM, PAC being mixed well to rear injection EPN aftertreatment tank 1 and EPN aftertreatment tank 2 12;
Floating system, comprises cavitation air flotation 20, the floating case 27 that removes of molten air supporting, for effectively capturing and float the less suspended substance dewatering, and removes the throw out forming in EPN aftertreatment tank 1 and EPN aftertreatment tank 2 12;
Sludge dry system, comprises pressure filter 29, for the body refuse press filtration that floating system is discharged;
Aftertreatment water conditioning system, comprise aftertreatment filter tank 1, aftertreatment filter tank 2 32, aftertreatment filter tank 1 is for passing through carbon granule impurity screening, aftertreatment filter tank 2 32 is eliminated and is further removed COD, BOD and the ammonia nitrogen in water body by micro-electrolysis, and then water purification enters the super oxidation system 34 of EPN acousto-optic chemistry water quality;
The super oxidation system 34 of EPN acousto-optic chemistry water quality, comprises ozone unit 33, Catalyzed by Ultrasonic Wave unit 35, ultraviolet clean unit 36, jointly produces super oxygenizement, for removing pollutent, killing bacterium and worm's ovum, makes the final qualified discharge of water purification.
Floating system of the present invention also comprises inlet chest 26, be arranged on the runner plate 19 in inlet chest, slag tapping box 23, clear water tanks 24, air compressor machine 17, molten gas release head 21, scraper 22, dissolving 25, pressure pump 28, in-line pump 30, the throw out that enters floating system first under the effect of cavitation air flotation 20 in conjunction with bubble floating, enter again molten air supporting floating except case 27, the micro-bubble discharging with molten gas release head 21 is combined floating, by scraper 22, scrape to slag tapping box 23, water purification after striking off enters clear water tanks 24 by bottom communicating pipe 37, water purification drains into aftertreatment water conditioning system by in-line pump 30 again.
PAM automatic medicament feeding machine 13 of the present invention, PAC automatic medicament feeding machine 16 comprise adjusts medicine-chest 14 and dosing tank 15, and the high-pressure air part that described air compressor machine 17 produces is used for adjusting medicine-chest 14 confections, part input dissolving 25 to produce high pressure dissolved air water.
Molten air supporting of the present invention is floating rises except the throw out in case 27, by scraper 22, scrapes into slag tapping box 23, then enters pressure filter 29 and carries out press filtration, and solids is pressed into that pie is cleared or for other purposes, recirculation water flows back to inlet chest 26 again.
A water part in clear water tanks 24 of the present invention enters aftertreatment water conditioning system, a part enters pressure pump 28 and pumps into dissolving 25 generation dissolved air waters through 21 releases of dissolved air water release head.
The water up to standard of super oxidation system 34 discharges of EPN acousto-optic chemistry water quality of the present invention, the tune medicine-chest 14 that a part enters PAM automatic medicament feeding machine 13 and PAC automatic medicament feeding machine 16 is used as tune medicine, the medicine of mixing well enters dosing tank 15, then inputs EPN aftertreatment tank 1 and EPN aftertreatment tank 2 12 mixes with sewage.
EPN livestock and poultry blowdown treatment system is mainly comprised of subsystems such as centrifugal extruding type solid-liquid separation system, water inlet system, EPN electrochemical generator, medicine system, floating system, sludge dry system, aftertreatment water conditioning system, the super oxidations of EPN acousto-optic chemistry, livestock and poultry blowdown is after solid-liquid separation, stoste is delivered to electrochemical generator by water inlet system, in producer, produce the multiple electrochemical reactions such as electrooxidation, electroreduction, electricity decolouring, electricity flocculation, electricity floating, can remove heavy metal, the microbiotic in sewage and reduce COD, BOD, ammonia nitrogen etc.; Sewage is delivered to floating system after electrochemistry, removes SS in water body, and carries out water conditioning by the filtration of aftertreatment sand carbon and the super oxidation system of EPN acousto-optic chemistry water quality, can realize qualified discharge and reuse.
Principle of work of the present invention:
Sewage is mixed well in equalization basin, can not precipitate guaranteeing, Simultaneous Stabilization raw water quality facilitates subsequent disposal, sewage through mixing well filters through solid-liquid separation 1, remove the larger suspended substance in water body, reduce COD and SS in water body, make back segment process simultaneously and can not produce precipitation or stop up, livestock and poultry blowdown is after solid-liquid separation, stoste pumps into EPN pre-treatment tank 1 by spiral pump 4, then enter EPN pre-treatment tank 26, in pre-treatment, realize and mixing well, pressure regulation and Balancing degree, order enters EPN electrochemistry main frame 7, in producer, produce electrooxidation, electroreduction, electricity decolouring, electricity flocculation, the multiple electrochemical reactions such as electricity floating, can remove the heavy metal in sewage, microbiotic and reduction COD, BOD, ammonia nitrogen etc., by runner machine interceptor, make impurity collision be combined into throw out, enter again EPN aftertreatment tank 1 and EPN aftertreatment tank 2 12, complete therein Pac, the dosing of Pam and mix well process, make in sewage the impurity such as SS form larger throw out, sewage enters floating system 18, the effect of first entering cavitation air flotation 20 at inlet chest 26 is in conjunction with a large amount of bubble floatings, under runner plate 19 effects, aggregate into large throw out, enter again floating except case 27, under the microbubble effect discharging at dissolved air water release head 21, throw out floating, water purification sinks, water purification enters clear water tanks 24 by 37 bottom UNICOMs, by in-line pump 30, pump into aftertreatment filter tank 1 again, aftertreatment filter tank 2 32 aftertreatment filter tanks, aftertreatment filter tank 1 is mainly as impurity screening purposes, aftertreatment filter tank 2 32 comprises the elimination means such as micro-electrolysis, further remove the COD in water body, BOD and ammonia nitrogen, then water purification enters the super oxidation system 34 of EPN acousto-optic chemistry water quality, be followed successively by ozone unit 33, ultrasound unit 35, ultraviolet unit 36, by its common super oxygenizement producing, remove pollutent, kill bacterium, worm's ovum etc., final qualified discharge.
The high-pressure air part that air compressor machine 17 produces is for tune medicine-chest (14) confection of PAM automatic medicament feeding machine 13PAC automatic medicament feeding machine 16, and part input dissolving 25 produces high pressure dissolved air water.
Floating rise except the throw out in case 27, by scraper 22, scrape into slag tapping box 23, then enter pressure filter 29 and carry out press filtration, solids is pressed into that pie is cleared or for other purposes, recirculation water flows back to inlet chest 26 again.
Water in clear water tanks 24 is except entering aftertreatment, and a part enters pressure pump 28 and pumps into dissolving 25 generation dissolved air waters again to 21 releases of dissolved air water release head.
The water up to standard of super oxidation system 34 discharges of EPN acousto-optic chemistry water quality, a part enters the dosing tank 14 of PAM automatic medicament feeding machine 13PAC automatic medicament feeding machine 16, be used as tune medicine, the medicine of mixing well enters dosing tank 15, then inputs EPN aftertreatment tank 1 and EPN aftertreatment tank 2 12 mixes with sewage.
Embodiment of the present invention is only the description that the preferred embodiment of the present invention is carried out; not design of the present invention and scope are limited; do not departing under the prerequisite of design philosophy of the present invention; various modification and improvement that in this area, engineering technical personnel make technical scheme of the present invention; all should fall into protection scope of the present invention; the technology contents that the present invention asks for protection, is all documented in claims.
Claims (6)
1. an EPN livestock and poultry cultivation blowdown treatment system, is characterized in that: comprise centrifugal extruding type solid-liquid separation system, water inlet system, EPN electrochemical generator, medicine system, floating system, sludge dry system, aftertreatment water conditioning system, the EPN acousto-optic chemistry super oxidation system of water quality (34); Wherein:
Centrifugal extruding type solid-liquid separation system, comprises solid-liquid separating machine (1), for removing the larger suspended substance of water body, reduces COD and SS in water body, makes back segment process simultaneously and can not produce precipitation or stop up;
Water inlet system, comprises spiral pump (4), for by the sewage transport after solid-liquid separation to EPN electrochemical generator;
EPN electrochemical generator, comprise the EPN pre-treatment tank one (5) being connected successively by pipeline, EPN pre-treatment tank two (6), EPN electrochemistry main frame (7), EPN aftertreatment tank one (11) and EPN aftertreatment tank two (12), described EPN pre-treatment one (5), EPN pre-treatment two (6) is for mixing well sewage, pressure regulation and Balancing degree, in described EPN electrochemistry main frame (7), produce electrooxidation, electroreduction, electricity decolouring, electricity flocculation, electricity floating electrochemical reaction, for removing the heavy metal of sewage, microbiotic and reduction COD, BOD, ammonia nitrogen, and by exchange pole plate (9), interceptor (10) makes impurity collision be combined into throw out, described EPN aftertreatment tank one (11) and EPN aftertreatment tank two (12), by the PAC adding, PAM fully mixes with sewage, make the SS in sewage form larger throw out,
Medicine system, comprises PAM automatic medicament feeding machine (13), PAC automatic medicament feeding machine (16), for respectively PAM, PAC being mixed well to rear injection EPN aftertreatment tank one (11) and EPN aftertreatment tank two (12);
Floating system, comprises cavitation air flotation (20), the floating case (27) that removes of molten air supporting, for effectively capturing and float the less suspended substance dewatering, and removes the throw out forming in EPN aftertreatment tank one (11) and EPN aftertreatment tank two (12);
Sludge dry system, comprises pressure filter (29), for the body refuse press filtration that floating system is discharged;
Aftertreatment water conditioning system, comprise aftertreatment filter tank one (31), aftertreatment filter tank two (32), aftertreatment filter tank one (31) is for passing through carbon granule impurity screening, aftertreatment filter tank two (32) is eliminated and is further removed COD, BOD and the ammonia nitrogen in water body by micro-electrolysis, and then water purification enters the EPN acousto-optic chemistry super oxidation system of water quality (34);
The EPN acousto-optic chemistry super oxidation system of water quality (34), comprise ozone unit (33), Catalyzed by Ultrasonic Wave unit (35), ultraviolet clean unit (36), take ozone as catalyzer, utilizing ultrasonic cavitation effect to form advanced oxidation with the hydrogen peroxide synthesis of hydroxy free radical producing in photochemical catalysis reacts, for reducing COD, BOD, ammonia-nitrogen content, and remove microbiotic in breeding wastewater and pollute, kill bacterium and worm's ovum, make the final qualified discharge of water purification.
2. a kind of EPN livestock and poultry cultivation blowdown treatment system according to claim 1, it is characterized in that: described floating system also comprises inlet chest (26), be arranged on the runner plate (19) in inlet chest, slag tapping box (23), clear water tanks (24), air compressor machine (17), molten gas release head (21), scraper (22), dissolving (25), pressure pump (28), in-line pump (30), the throw out that enters floating system first under the effect of cavitation air flotation (20) in conjunction with bubble floating, enter again molten air supporting floating except case (27), the micro-bubble discharging with molten gas release head (21) is combined floating, by scraper (22), scrape to slag tapping box (23), water purification after striking off enters clear water tanks (24) by bottom communicating pipe (37), water purification drains into aftertreatment water conditioning system by in-line pump (30) again.
3. a kind of EPN livestock and poultry cultivation blowdown treatment system according to claim 1 and 2, it is characterized in that: described PAM automatic medicament feeding machine (13), PAC automatic medicament feeding machine (16) comprise adjusts medicine-chest (14) and dosing tank (15), the high-pressure air part that described air compressor machine (17) produces to be used for adjusting medicine-chest (14) confection, part input dissolving (25) to produce high pressure dissolved air water.
4. a kind of EPN livestock and poultry cultivation blowdown treatment system according to claim 1, it is characterized in that: described molten air supporting is floating except the throw out rising in case (27), by scraper (22), scrape into slag tapping box (23), then enter pressure filter (29) and carry out press filtration, solids is pressed into that pie is cleared or for other purposes, recirculation water flows back to inlet chest (26) again.
5. a kind of EPN livestock and poultry cultivation blowdown treatment system according to claim 1, is characterized in that: the water part in described clear water tanks (24) enters aftertreatment water conditioning system, a part and enters pressure pump (28) and pump into dissolving (25) and produce dissolved air water and discharge through dissolved air water release head (21).
6. a kind of EPN livestock and poultry cultivation blowdown treatment system according to claim 1, it is characterized in that: the water up to standard of the EPN acousto-optic chemistry super oxidation system of water quality (34) discharge, the tune medicine-chest (14) that a part enters PAM automatic medicament feeding machine (13) and PAC automatic medicament feeding machine (16) is used as tune medicine, the medicine of mixing well enters dosing tank (15), then inputs EPN aftertreatment tank one (11) and EPN aftertreatment tank two (12) mixes with sewage.
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| CN105347443A (en) * | 2015-12-03 | 2016-02-24 | 中国农业科学院农业环境与可持续发展研究所 | Livestock and poultry breeding wastewater treatment method |
| CN108821505A (en) * | 2018-06-21 | 2018-11-16 | 上海库克莱生态科技有限公司 | A kind of equipment of modular extendable river regulation |
| CN113875631A (en) * | 2021-08-23 | 2022-01-04 | 河海大学 | Chicken manure ecological treatment and recycling system and operation method |
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| CN113875631A (en) * | 2021-08-23 | 2022-01-04 | 河海大学 | Chicken manure ecological treatment and recycling system and operation method |
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| Publication number | Publication date |
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| CN104150659B (en) | 2015-12-02 |
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