CN103896442A - Pig farm wastewater treatment method - Google Patents

Pig farm wastewater treatment method Download PDF

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Publication number
CN103896442A
CN103896442A CN201210575665.6A CN201210575665A CN103896442A CN 103896442 A CN103896442 A CN 103896442A CN 201210575665 A CN201210575665 A CN 201210575665A CN 103896442 A CN103896442 A CN 103896442A
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China
Prior art keywords
treatment
sewage
water
organic
pond
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CN201210575665.6A
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Chinese (zh)
Inventor
戴华强
管永祥
梁永红
吴昊
王子臣
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YIXING JINQIYANG BIOMASS ENVIRONMENTAL CONTROL TECHNOLOGY CONSULTING Co Ltd
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YIXING JINQIYANG BIOMASS ENVIRONMENTAL CONTROL TECHNOLOGY CONSULTING Co Ltd
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Priority to CN201210575665.6A priority Critical patent/CN103896442A/en
Publication of CN103896442A publication Critical patent/CN103896442A/en
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Abstract

The invention provides a pig farm wastewater treatment method. The method comprises the processes of rain-sewage separation treatment, dry-wet separation treatment, solid-liquid separation treatment and purification treatment, and the purification treatment process comprises the steps of biological integrated wastewater treatment and biological pond purification treatment. The method adopting the above technical scheme has the advantages of easy realization, low cost, compact treatment facility, substantial saving of the occupied area, and shortening of the reaction time, and an apparatus for implementing the method has the advantages of corrosion resistance, low noise, basically no peculiar smell, and long life.

Description

Process for Treatment of Swine Wastewater method
[technical field]
The present invention relates to technical field of waste water processing, relate to one and utilize biological-ecological composite treatment technology to purify intensive piggery wastewater, realize the New Wastewater Treatment Technique of the innoxious and resource utilization of waste water.
[background technology]
Intensive Farm of Pig Raising waste water mainly, from swine excrement, pig urine and pigsty wash-down water, has the advantages that large, the organic concentration of quantity discharged is high and ammonia-nitrogen content is high.Measuring and calculating according to investigations, the main water-quality guideline of the piggery wastewater of separating dry space from moist space is:
Livestock and poultry farms in scale wastewater treatment and comprehensive utilization technique have following several technique: natural biology facture, aerobic treatment method, anaerobic treatment method, anaerobic-aerobic combination treatment method, ecological engineering-biogas engineering facture etc.In general, active sludge aerobic facture, its COD cr, BOD, SS clearance be higher, can reach emission standard, but N, P clearance are low, and construction investment is large, working cost is high; Natural biology facture, its COD, BOD 5, SS, N, P clearance be high, can reach emission standard, and cost is low, but floor space is too large, the cycle is oversize, in soil, place in short supply is difficult to promote; Anaerobic biological process can be processed the waste water of high-concentration organic matter, and self power consumption is few, and working cost is low, and produces the energy, but high concentrated organic wastewater is after anaerobic treatment, the often BOD in water 5still have even more, be difficult to the emission standard that reaches existing.In addition, in anaerobic treatment process, organonitrogen is converted into ammonia nitrogen, and sulfide is converted into hydrogen sulfide, makes waste water after treatment still have certain stink, need to do further aerobe processing.And anaerobic-aerobic combination treatment, both overcome the deficiency that aerobic treatment energy consumption is large and land area is in short supply, overcome again anaerobic treatment and do not reached the defect of requirement, have that less investment, working cost are low, good purification, energy environment comprehensive benefit advantages of higher, be particularly suitable for the wastewater treatment of the livestock and poultry farm that produces high concentrated organic wastewater.The typical process of anaerobic-aerobic combination treatment is as UASB+ activated sludge process or bio-contact oxidation ^ oxidation pond, and livestock and poultry farm plant waste water is after this art breading, and its water outlet not only can be used for irrigating, cultivation, and reaches emission standard.The capacity of ecological engineering-biogas engineering facture fermentation unit is 2~4 times of day wastewater discharge, and one-time investment is larger.But biogas fermentation can be processed the waste water containing high-concentration organic matter, self power consumption is few, and working cost is low, and biogas is fabulous free of contamination fuel, has good economic benefit.Because the waste water biogas fermentation efficiency of organic content below 1000mg/L is not high, even thermophilic fermentation, clearance organic in waste water also can not reach 100%, therefore, to the waste water after biogas fermentation, should carry out aerobic treatment again.Above-mentioned polytechnic working cost all exceedes 2 yuan/m 3waste water.
Domestic to Process for Treatment of Swine Wastewater take anaerobism+aerobic combined treatment process as main.Zhang Yuanbi etc. proposed " anaerobism-naturally process " and ' anaerobism-also field " two kinds of pig farm excrement and urine water tupes; the former is applicable to the suburbs that pig farm is located in big or middle city; there is no enough farmlands pig manure waste water of dissolving; but periphery has suitable beach, wetland or bottom land; can be used as the area of waste water nature treatment system, pig farm scale is medium, take artificial dry clear excrement as main; it is auxiliary that water rushes, influent COD cr" 6000mg/L; The latter be applicable to enough farmlands dissolve water outlet after anaerobic treatment area, particularly plantation throughout the year fertilising crop as the base of vegetables, cash crop.And the dirty pre-treatment of strengthening excrement (comprise separating dry space from moist space and settling tank is set) is proposed to improve anaerobic digestion efficiency.The technical characterstic of Hangzhou beacon cultivation resultant field biogas and waste water treatment engineering has been summed up in the analyses such as Shou Yifeng, this project employing rotary type grid maker separates the isolated excrement slag of < with special hydraulic screen two roads and is used for making fertilizer) strengthening pre-treatment, water outlet is through " UASB+SBR+ coagulating sedimentation " art breading, at water inlet Pollutant levels COD cr5616~9965mg/L, BOD 53960~4460mg/L, SS 2310~5410mg/L, NH 3when-N634~1114mg/L, water outlet COD cr97~113mg/L, BOD 511.2~19.9mg/L, SS 60~90mg/L, but working cost is up to 2.5 yuan/m 3waste water.Bian Yousheng etc. have proposed the big China of rural area woods and have waited engineering design and the running condition thereof of having introduced employing " CSTR+SBR " art breading pig manure waste water, and result shows: at water inlet Pollutant levels COD cr9600mg/L, BOD 55000mg/L, SS 6000mg/L, NH 3when-N 800mg/L, water outlet COD cr250mg/L, BOD 565mg/L, SS150mg/L, NH 3-N 7.9mg/L.1.5 yuan/m of working cost 3waste water.Pan Yongzhang etc. have introduced the practical operation situation of employing higher synthesis stabilization pond (the senior facultative lagoon+high loading pool+algae sedimentation pool+ecological pond) art breading Guangzhou Wastewater from Pig Farm, and result shows: at water inlet Pollutant levels COD cr15899mg/L, BOD 510840mg/L, SS 3024mg/L, NH 3under the condition of-N 1283mg/L, water outlet COD cr71.5mg/L,BOD 5?23mg/L,SS?34mg/L,NH 3-N?66.5mg/L。Working cost is 0.99 yuan/m 3waste water.
In sum, at present domestic comparatively ripe to the treatment process of pig farm fecaluria waste water, but all there are the following problems: the one, COD cr, BOD 5exceed standard; The 2nd, NH 3-N exceeds standard; The 3rd, running cost is high.
[summary of the invention]
For addressing the above problem, the invention provides a kind of Process for Treatment of Swine Wastewater method, it comprises the dirty separating treatment of rain, separating dry space from moist space processing, solid-liquid separation processing and purifying treatment, described purifying treatment comprises biological integrated wastewater treatment and biological pond purifying treatment.
Preferably, the dirty separating treatment of wherein said rain is that the drainage on pig farm is designed to secret tunnel blowdown to prevent the rainwater of storm period and mixing of ight soil.
Preferably, wherein said separating dry space from moist space processing is that the argol in ight soil is separated with sewage, and described sewage comprises the rinse water of liquid in ight soil.
Preferably, wherein said solid-liquid separation processing is that sewage is carried out to solid-liquid separation, further reduces the organic solid castoff content in sewage.
Preferably, the integrated wastewater treatment of wherein said biology comprises homogenizing, hydrolysis acidification pool hydrolysis organism and three steps of oxidation pond degradation of organic substances of equalizing tank regulating pondage and water quality.
Preferably, in the step of the homogenizing of wherein said equalizing tank regulating pondage and water quality, described sewage enters equalizing tank carries out the adjusting homogenizing of the water yield, water quality, guarantee the equilibrium, stable of the follow-up biochemical treatment system water yield and water quality, and preaeration system is set, stir for oxygenation, to prevent suspended particle precipitation in sewage.
Preferably, wherein said hydrolysis acidification pool is hydrolyzed in organic step, in described hydrolysis acidification pool, 3 D elastic filler is set, the particulate matter in sewage and colloidalmaterial are held back and adsorbed, utilize hydrolysis bacterium is dissolved matter by insoluble hydrolysis of organic matter simultaneously.
Preferably, wherein said oxidation pond is made up of parts such as pond body, filler, water-distributing device and oxygenic aeration systems.
Preferably, the step of wherein said oxidation pond degradation of organic substances is divided into two steps: the first step, under higher organic loading, by biochemical degradation and the adsorption of filler, remove the various organic substances in sewage, and reduce the organic content in sewage; Second, under lower organic loading, by the effect of nitrifier, the ammonia nitrogen under the condition of oxygen amount abundance in degradation of sewage is reduced to lower level by the COD value in sewage simultaneously.
Preferably, in the step of wherein said biological pond purifying treatment, in biological pond treating pond, filler is set, be oxygen supply by people, a large amount of microorganism that makes to grow on filler, the microbial film gap-contact of growing on sewage and filling surface, is purified sewage and flows into filtered water tank.
Technical scheme of the present invention implements more simply, cost is lower, treatment facility is compact can greatly save floor space and reduce the reaction times, and equipment is corrosion-resistant, and noise is low, basic free from extraneous odour and long with the life-span.
[accompanying drawing explanation]
After having read the specific embodiment of the present invention with reference to accompanying drawing, those skilled in the art will become apparent all respects of the present invention.Those skilled in the art should be understood that: these accompanying drawings are only for coordinating embodiment that technical scheme of the present invention is described, and are not intended to protection scope of the present invention to be construed as limiting.Wherein,
Fig. 1 is according to the Technology Roadmap of the treatment process of embodiment of the present invention piggery wastewater.
[embodiment]
With reference to the accompanying drawings, the specific embodiment of the present invention is described in further detail.
Fig. 1 is described as the Technology Roadmap of the treatment process of piggery wastewater of the present invention.With reference to figure 1, the treatment process of piggery wastewater of the present invention has been taked following technique: the dirty separating treatment → separating dry space from moist space processing → solid-liquid separation of rain processing → biological integrated wastewater treatment → biological pond purifying treatment.
The treatment process of piggery wastewater of the present invention comprises the steps:
The first step, the dirty separating treatment of rain: improve or reconstruct the architectural design on pig farm, open drain blowdown is revised as to secret tunnel blowdown, thereby make pig farm there is the dirty separation system design of adjustable rain, storm period high pollution runoff rainwater is effectively separated, realize rainwater and separate completely with ight soil.
Second step, separating dry space from moist space processing: pigsty is done to clear excrement, clean pigsty by washing by water again after argol and liquid separation, and punching circle water is formed to sewage together with liquid mixing.
The 3rd step, solid-liquid separation processing: sewage is carried out to solid-liquid separation, further reduce the organic solid castoff content in sewage.
The 4th step, biological integrated wastewater treatment: the integrated wastewater treatment of described biology comprises homogenizing, hydrolysis acidification pool hydrolysis organism and three steps of oxidation pond degradation of organic substances of equalizing tank regulating pondage and water quality.
In the step of the homogenizing of described equalizing tank regulating pondage and water quality, sewage enters equalizing tank and carries out the adjusting homogenizing of the water yield, water quality after grille well is processed, guarantee the equilibrium, stable of the follow-up biochemical treatment system water yield, water quality, described equalizing tank is provided with preaeration system, stir for oxygenation, smelly to prevent suspended particle precipitation in sewage, again organism in sewage is played to certain degraded effect, improve shock resistance and the treatment effect of whole system.
Described hydrolysis acidification pool is hydrolyzed in organic step, is provided with 3 D elastic filler in hydrolysis acidification pool, for bacterium provides the biological bed that is stereo structure, the particulate matter in water and colloidalmaterial is held back and is adsorbed., under the effect of hydrolysis bacterium, be simultaneously dissolved matter by insoluble hydrolysis of organic matter, under the acting in conjunction of acid-producing bacteria, by macromolecular substance, be difficult to biodegradable Substance Transformation for being easy to biodegradable small-molecule substance, make the raising of BOD5/CODcr value.Boring aeration pipe is set in pond, stirs for sewage, can effectively control sewage and maintain the acidication stage, can prevent again the microbial film deposition that necrosis comes off.Sewage is 4 hours between the hydrolysis acidification pool stopping time, and the useful volume of hydrolysis acidification pool is 2.5m 3.
The water outlet overflow of described hydrolysis acidification pool enters in the step of contact-oxidation pool, and described contact-oxidation pool is made up of parts such as pond body, filler, water-distributing device and oxygenic aeration systems.Hydrolysis acidification pool water outlet gravity flow enters contact-oxidation pool.Contact oxidation method organic loading (BOD loading) is relatively high, strong shock resistance, stable effluent quality.Contact filler adopts 3 D elastic filler.This filler flow characteristics is good, has huge specific surface area, is easy to biofilm, is difficult for stopping up long service life.Biochemistry pool adopts micro-pore aeration, and sewage is constantly circulation in pond, so that the microbial film on filler obtains contacting fully degraded with organism in sewage.The advantages such as aerating system adopts boring aeration pipe, has oxygen-transfer efficiency high, and gas distribution is even design gas-water ratio is 18: 1.Contact-oxidation pool design BOD loading is 0.6KG/m 3d, the design residence time is 10.6 hours, the total useful volume of contact-oxidation pool is 21.5m 3.The step of described contact-oxidation pool oxidation pond degradation of organic substances is divided into two steps: the first step, under higher organic loading, by biochemical degradation and the adsorption of filler, remove the various organic substances in sewage, and reduce the organic content in sewage; Second step, under lower organic loading, by the effect of nitrifier, the ammonia nitrogen under the condition of oxygen amount abundance in degradation of sewage is reduced to lower level by the COD value in sewage simultaneously.
The 5th step, biological pond purifying treatment: described biological pond purifying treatment is the Novel sewage treatment process that membrane separation technique and biologic treating technique organically combine.Under the condition of the microorganism continuous oxygenation of aeration tube in pond in reactor in active sludge, with the organic substance in water, dissolved oxygen is nutrition source, by the metabolism of self, make organic substance be decomposed into simple carbohydrate (CO2, H2O), thereby the organism in sewage is degraded.In simultaneous reactions device, be provided with the membrane module with efficient crown_interception, these membrane modules can be retained in the active sludge in biochemical reaction process and larger molecular organics matter in reactor, in reactor, realize solid-liquid separation, therefore the concentration of the active sludge in reactor can be strengthened gradually, microorganism active improves greatly, be very beneficial for the degraded of organic pollutant, realized completely separating and controlling respectively of hydraulic detention time and sludge retention time simultaneously.In integral membrane biological reaction system, be provided with self-priming centrifugal water pump, by the water suction of water pump, make the inner negative pressure state that forms of film, outside sewage is by the pressure reduction of the inside and outside portion of film and the efficient crown_interception of membrane module, dirty pollutant in water is trapped in outside membrane module, and clean water enters film inner chamber by membrane pores smoothly, and promotes by self-priming water pump, finally enter clean water basin, thus the object that completes solid-liquid separation and dispose of sewage.
The solid sediment being precipitated out in the solid waste that in described second step, cleaning processing argol, the 3rd step clear and the 4th step and the 5th step can directly change into production fertilizer, can be used for selling and farmland utilization.The clear water of final purification can be again for cleaning pigsty.
Water in piggery wastewater can be separated again and utilized by the present invention, the solid matter clearing can be used for generating fertilizer.
Above, describe the specific embodiment of the present invention with reference to the accompanying drawings.But those skilled in the art can understand, without departing from the spirit and scope of the present invention in the situation that, can also do various changes and replacement to the specific embodiment of the present invention.These changes and replacement all drop in the claims in the present invention book limited range.

Claims (10)

1. a Process for Treatment of Swine Wastewater method, is characterized in that: it comprises the dirty separating treatment of rain, separating dry space from moist space processing, solid-liquid separation processing and purifying treatment, and described purifying treatment comprises biological integrated wastewater treatment and biological pond purifying treatment.
2. Process for Treatment of Swine Wastewater method as claimed in claim 1, is characterized in that, the dirty separating treatment of wherein said rain is that the drainage on pig farm is designed to secret tunnel blowdown to prevent the rainwater of storm period and mixing of ight soil.
3. Process for Treatment of Swine Wastewater method as claimed in claim 1, is characterized in that, wherein said separating dry space from moist space processing is that the argol in ight soil is separated with sewage, and described sewage comprises the rinse water of liquid in ight soil.
4. Process for Treatment of Swine Wastewater method as claimed in claim 3, is characterized in that, wherein said solid-liquid separation processing is that sewage is carried out to solid-liquid separation, further reduces the organic solid castoff content in sewage.
5. Process for Treatment of Swine Wastewater method as claimed in claim 4, is characterized in that, the integrated wastewater treatment of wherein said biology comprises homogenizing, hydrolysis acidification pool hydrolysis organism and three steps of oxidation pond degradation of organic substances of equalizing tank regulating pondage and water quality.
6. Process for Treatment of Swine Wastewater method as claimed in claim 5, it is characterized in that, in the step of the homogenizing of wherein said equalizing tank regulating pondage and water quality, described sewage enters equalizing tank carries out the adjusting homogenizing of the water yield, water quality, guarantee the equilibrium, stable of the follow-up biochemical treatment system water yield and water quality, and preaeration system is set, stir for oxygenation, to prevent suspended particle precipitation in sewage.
7. Process for Treatment of Swine Wastewater method as claimed in claim 5, it is characterized in that, wherein said hydrolysis acidification pool is hydrolyzed in organic step, in described hydrolysis acidification pool, 3 D elastic filler is set, particulate matter in sewage and colloidalmaterial are held back and adsorbed, and utilize hydrolysis bacterium is dissolved matter by insoluble hydrolysis of organic matter simultaneously.
8. Process for Treatment of Swine Wastewater method as claimed in claim 5, is characterized in that, wherein said oxidation pond is made up of parts such as pond body, filler, water-distributing device and oxygenic aeration systems.
9. Process for Treatment of Swine Wastewater method as claimed in claim 8, it is characterized in that, the step of wherein said oxidation pond degradation of organic substances is divided into two steps: the first step, under higher organic loading, by biochemical degradation and the adsorption of filler, remove the various organic substances in sewage, reduce the organic content in sewage; Second, under lower organic loading, by the effect of nitrifier, the ammonia nitrogen under the condition of oxygen amount abundance in degradation of sewage is reduced to lower level by the COD value in sewage simultaneously.
10. Process for Treatment of Swine Wastewater method as claimed in claim 9, it is characterized in that, in the step of wherein said biological pond purifying treatment, in biological pond treating pond, filler is set, be oxygen supply by people, a large amount of microorganism that makes to grow on filler, the microbial film gap-contact of growing on sewage and filling surface, is purified sewage and flows into filtered water tank.
CN201210575665.6A 2012-12-27 2012-12-27 Pig farm wastewater treatment method Pending CN103896442A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104071952A (en) * 2014-07-15 2014-10-01 厦门大学 Biochemical film treating method for cultivation wastewater
CN104310740A (en) * 2014-10-30 2015-01-28 朱安民 Pollution discharge control process in scale-cultivation
CN104310722A (en) * 2014-11-17 2015-01-28 武汉百安生物科技有限责任公司 High-efficiency treating technology and device for waste water
CN104817241A (en) * 2015-04-15 2015-08-05 柳州市大金农业科技有限公司 Farm waste ecological treatment method
CN104844286A (en) * 2015-04-14 2015-08-19 柳州市大金农业科技有限公司 Pigeonry sewage ecological treatment method
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
CN105417920A (en) * 2015-11-24 2016-03-23 贵港市港北区雁行养猪专业合作社 Pig manure treating method and device
CN105836969A (en) * 2016-05-14 2016-08-10 厦门史帝福环保科技有限公司 Pig farm wastewater treatment method
CN106007311A (en) * 2016-06-30 2016-10-12 宾阳县东洋养殖有限公司 Environment-friendly ecological recycling method for pig manure
CN109111047A (en) * 2018-09-21 2019-01-01 苏州农业职业技术学院 A kind of feces of farm isolation of purified processing method

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104071952A (en) * 2014-07-15 2014-10-01 厦门大学 Biochemical film treating method for cultivation wastewater
CN104310740A (en) * 2014-10-30 2015-01-28 朱安民 Pollution discharge control process in scale-cultivation
CN104310722A (en) * 2014-11-17 2015-01-28 武汉百安生物科技有限责任公司 High-efficiency treating technology and device for waste water
CN104844286A (en) * 2015-04-14 2015-08-19 柳州市大金农业科技有限公司 Pigeonry sewage ecological treatment method
CN104817241A (en) * 2015-04-15 2015-08-05 柳州市大金农业科技有限公司 Farm waste ecological treatment method
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
CN105417920A (en) * 2015-11-24 2016-03-23 贵港市港北区雁行养猪专业合作社 Pig manure treating method and device
CN105417920B (en) * 2015-11-24 2018-10-12 贵港市港北区雁行养猪专业合作社 The processing method and processing device of swine excrement
CN105836969A (en) * 2016-05-14 2016-08-10 厦门史帝福环保科技有限公司 Pig farm wastewater treatment method
CN105836969B (en) * 2016-05-14 2019-01-18 厦门史帝福环保科技有限公司 A kind of Wastewater from Pig Farm processing method
CN106007311A (en) * 2016-06-30 2016-10-12 宾阳县东洋养殖有限公司 Environment-friendly ecological recycling method for pig manure
CN109111047A (en) * 2018-09-21 2019-01-01 苏州农业职业技术学院 A kind of feces of farm isolation of purified processing method

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