CN203007087U - Pig-raising wastewater treatment system - Google Patents
Pig-raising wastewater treatment system Download PDFInfo
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- CN203007087U CN203007087U CN 201220638635 CN201220638635U CN203007087U CN 203007087 U CN203007087 U CN 203007087U CN 201220638635 CN201220638635 CN 201220638635 CN 201220638635 U CN201220638635 U CN 201220638635U CN 203007087 U CN203007087 U CN 203007087U
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Abstract
The utility model relates to a pig-raising wastewater treatment system. The pig-raising wastewater treatment system comprises an MAP (magnesium ammonium phosphate) chemical precipitation tank (1) for recovering nitrogen and phosphorus components in sewage and a biochemical reactor (8) for treating supernatant liquid from the MAP chemical precipitation tank, wherein a supernatant liquid outlet of the MAP chemical precipitation tank is connected with a supernatant liquid inlet of an anaerobic filter tank (2) of the biochemical reactor, an anaerobic water outlet of the anaerobic filter tank is connected with an anaerobic water inlet of an aerobic aeration tank (7), an aerobic water outlet of the aerobic aeration tank is connected with an aerobic water inlet of a precipitation tank (5), and a biogas outlet of the anaerobic filter tank (2) is connected with a biogas collecting tank (3). The pig-raising wastewater treatment system disclosed by the utility model can reduce energy consumption, reduces sewage treatment cost and simultaneously prepares an organic compound fertilizer from the sewage.
Description
Technical field
The utility model relates to a kind of Waste Water Treatment of raising pigs, and belongs to the waste water control field.The Phosphorus material of nitrogen in the sewage of its recoverable pig farm, and improve the operating performance for the treatment of process.
Background technology
At present, the problem of environmental pollution that is caused by agricultural pollution source has become the key content of Environmental Protection in China work, and " three wastes " of livestock and poultry breeding industry discharging pollute and accounted for approximately 30%.China's live pig output ranks first in the world in livestock and poultry breeding industry, and therefore, the gordian technique research of the comprehensive regulation of pig farm pollutent and utilization just becomes the key link that solves the agricultural pollution problem, and wherein the processing of pig farm sewage and disposal are the most important things.Rinse because its high-enriched organics that contains is mainly derived from fecaluria, feed is residual, belongs to the natural degradable organic pollutant, and namely biodegradable is good, and therefore in the processing of this type of sewage, all adopting biochemical process is the pattern of main process.Wherein anaerobism is produced the selection of methane technology, and is energy-conservation because of it, running cost is low, can turn waste into wealth again simultaneously produces this class energy substance of methane, and becomes essential technique.
In traditional pig farm sewage disposal, sewage is through after solid-liquid separation, enter collecting tank (or equalizing tank), then supernatant liquor is introduced biochemical reactor, at first supernatant liquor enters the anaerobic reactor of biochemical reactor, anaerobic effluent enters the aerobic reaction pond, and outputted aerobic water enters settling tank, water outlet after precipitation.
But the actual running results shows, in anaerobic technique, hydraulic detention time is long, and be easy to be subject to the impact of seasonal water quality, the water yield, outlet effect is bad, easily cause the series of problems such as subsequent technique fluctuation of service, especially make and produce that the methane quality is low, speed is slow, and reactor in service easily collapses.
Moreover in the sewage disposal of pig farm, the technical process of practical application is all take simple degradable organic pollutant and removes nitrogen phosphorus as purpose, do not have a kind of technique to consider the Phosphorus material of the nitrogen sewage is carried out recycling from the angle of resource utilization at present.And therefore the nitrogen phosphorus essential fertilizer that is crop growth carry out the Phosphorus material of the nitrogen in sewage " resource utilization " and recycle and be extremely important.And the mode of " resource utilization " is disposed of sewage, the saving earth resources of can turning waste into wealth, thus can produce new economic benefit reduction to the processing cost of sewage because forming product again.It is that the only way which must be passed of " cleaner production, walk sustainable development path " is realized in intensive large scale of pig farm field, is also the ultimate aim of recycling economy development.Therefore, study novel treatment technique that novel technical method, exploitation be fit to the pig farm sewage disposal with bottleneck problems of solving these restriction anaerobic techniques development under new Economic Development Mode and technical development background and in realizing sewage the Phosphorus material of nitrogen carry out " resource utilization " and process the fresh target tool of disposing and have very great significance.
Summary of the invention
The utility model is not considered the Phosphorus pollutent of nitrogen in sewage is carried out the defective that " resource utilization " utilized for having in traditional pig farm waste disposal plant, a kind of Waste Water Treatment of raising pigs of realizing recycling treatment waste water is provided, because at first it can recycle the Phosphorus material of nitrogen in the sewage of pig farm, and then carry out subsequent disposal by biochemical reactor, therefore at the dwell time of sewage of anaerobism, aerobic section, produce speed and the quality of methane, and final draining Effects of Water Quality has greatly and improves.
A kind of Waste Water Treatment of raising pigs that the utility model provides, it comprises:
One is used for reclaiming the MAP chemical precipitation pond of nitrogen phosphorus composition in sewage;
One is used for processing the biochemical reactor from MAP chemical precipitation pond supernatant liquor out.
In above-mentioned, the supernatant liquor entrance of the anaerobic filter of delivering a child of the supernatant liquor outlet reactor in MAP chemical precipitation pond, the anaerobic effluent mouth of anaerobic filter connects the anaerobism water inlet of oxygen aeration tank, the outputted aerobic water mouth in aerobic aeration pond connects the aerobic water inlet of settling tank, and the methane outlet of anaerobic filter connects the collecting methane pond; Effluent recycling pipe in the settling tank water outlet is connected with the aerobic aeration pond; The mud return line of settling tank is connected with anaerobic filter.
During use, will from pig house wash-down water introducing MAP chemical precipitation pond out, add the Na of mass percent concentration 17.2%
3PO
4Solution and 4.8% MgCl
2Solution, control in reaction solution that between total P, Mg, N, mole ratio is P:Mg:N=1:1:1.7～4, pH value 8.5～9.2 with NaOH solution conditioned reaction liquid, then stirred 30～50 minutes, standing 2～3 hours, supernatant liquor is introduced biochemical reactor process, and generate with magnesium ammonium phosphate (MgNH in throw out
4PO
46H
2O) and potassium-sodium phosphates magnesium (MgKNaPO
414H
2O) be that the compoiste fertilizer of principal constituent is used for agriculture production, the nitrogen phosphor resource in the sewage that has reclaimed like this.
Stirring is carried out with a kind of alr mode of speed change, and namely in 10 minutes after adding medicament, stir speed (S.S.) is 400rpm, and the remaining time is reduced stir speed (S.S.) to 160rpm.
And preparation mentioned solution solvent used can adopt the last draining of Sewage treatment systems, saves so a large amount of fresh water consumptions and cost, and reduces partial discharge water, plays the effect of " reduction of discharging ".
The beneficial effects of the utility model are:
Broken through in the past in all old technology patterns merely take degradable organic pollutant and removed nitrogen phosphorus as the limitation of the method for governing pollution of purpose, having adopted and pollutent is carried out the source control, with the MAP chemical precipitation method, these pollutents having been generated with magnesium ammonium phosphate (MgNH
4PO
46H
2O) and potassium-sodium phosphates magnesium (MgKNaPO
414H
2O) be that the compoiste fertilizer of principal constituent is used for agriculture production, the nitrogen phosphor resource in the sewage that has reclaimed for the new economic benefit of pig farm creation, effectively reduces cost of sewage disposal conscientiously.
Before biochemical treatment, pollutent is carried out another benefit that the source is controlled, be guaranteed simultaneously to enter biochemical reactor particularly the sewage of anaerobic technique section be steady state, can not impact anaerobism section microbial ecosystem.In conventional processes, anaerobic reactor be in operation easy acidifying, easily collapse; The utility model has been eliminated the basic influence factor that causes this potentially dangerous.Also improved greatly simultaneously anaerobism and produced methane speed and aerogenesis quality, by 1.0～1.5m in traditional technology
3/ m
3.d, 50～60%, bring up to respectively 2.0～2.5m
3/ m
3.d with 65～70%.Shorten 8～14 days start times of anaerobic reactor, the anaerobism residence time has shortened 3～5 days.
Compare with the tradition wastewater treatment equipment of raising pigs, the utility model improves the treatment system impact resistance greatly, has effectively shortened the sewage disposal time of whole flow process, and sewage residence time in system shortens 4～7 days.The utility model greatly reduces energy consumption, makes simultaneously organic composite fertilizer from sewage, so very effective reduction cost of sewage disposal, has realized the Development patterns of pig farm recycling economy.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
With reference to Fig. 1, a kind of Waste Water Treatment of raising pigs that the utility model provides, the supernatant liquor entrance of the anaerobic filter 2 of delivering a child of the supernatant liquor outlet reactor 8 in MAP chemical precipitation pond 1, the anaerobic effluent mouth of anaerobic filter 2 connects the anaerobism water inlet of oxygen aeration tank 7, the outputted aerobic water mouth in aerobic aeration pond 7 connects the aerobic water inlet of settling tank 5, and the methane outlet of anaerobic filter 2 connects collecting methane pond 3; Effluent recycling pipe 4 in settling tank 5 water outlets is connected with aerobic aeration pond 7, and the mud return line 6 of settling tank 5 is connected with anaerobic filter 2.
The utility model is respectively take certain pig farm sewage of Maoming City and Gaozhou City as objective for implementation, they in live pig year 20000 and 1.7 ten thousand respectively of livestock on hands.During use, pig house washing water is directly introduced MAP chemical precipitation pond 1, and the reaction tank volume is 12.5L, basin's effective volume 10L; Then supernatant liquor enters anaerobic filter 2, useful volume 15L; Anaerobic effluent enters aerobic aeration pond 7, useful volume 15L; Outputted aerobic water enters settling tank, useful volume 20L(advection sedimentation technique); Water outlet after precipitation, part is used for preparing chemical reaction soln, and part is used for breeding fish, and irrigates etc.Specific as follows:
Application Example 1
Take Maoming City pig farm sewage as objective for implementation, 20,000 of live pig livestock on hands.Each pollutent index of the former water of sewage that records in Various Seasonal is as follows: SCOD 4500-7800mg/L, TOC 2300-3000mg/L, NH
4 +-N 900-1400mg/L, PO
4 3--P 70-110mg/L, SS 3300-6700mg/L.Get 10L sewage and pack into after the MAP reaction tank, add concentration to be respectively 17.2% and 4.8% tertiary sodium phosphate (Na
3PO
4), magnesium dichloride (MgCl
2) solution, according in reaction solution between total P, Mg, N mole ratio be: P:Mg:N=1:1:2.5 determines their consumption.With the pH value of 10M and 1M NaOH solution conditioned reaction liquid between 8.5 ~ 9.2.Stir at once after adding medicament, speed is that 400rpm stirred 10 minutes, then reduces stir speed (S.S.) to 160rpm, and continue to stop after 30 minutes stirring, after standing 2 ~ 3 hours, supernatant liquor enters anaerobic reactor.This moment, sewage hydraulic detention time in anaerobic filter was 8-14 days in traditional technology, but through after pretreatment technology in the utility model, anaerobic HRT shortens to 3～5 days.Produce methane speed and aerogenesis quality, by 1.0～1.5m in traditional technology
3/ m
3.d, 50～60%, bring up to respectively 2.0～2.5m
3/ m
3.d with 65～70%.Magnesium ammonium phosphate (MgNH in precipitation
4PO
46H
2O) and potassium-sodium phosphates magnesium (MgKNaPO
414H
2O) content accounts for 78%～93% of total precipitation quality.It is few that anaerobic filter produces sludge quantity, must spoil disposal at experimental session.
Application Example 2
Take Gaozhou City, Guangdong Province pig farm sewage as objective for implementation, 1.7 ten thousand of live pig livestock on hands.Each pollutent index of the former water of sewage that records in Various Seasonal is as follows: SCOD 4000-6900mg/L, TOC 2100-2900mg/L, NH
4 +-N 700-1200mg/L, PO
4 3--P 70-100mg/L, SS 2300-5700mg/L.Get 10L sewage and pack into after the MAP reaction tank, add concentration to be respectively 17.2% and 4.8% tertiary sodium phosphate (Na
3PO
4), magnesium dichloride (MgCl
2) solution, according to total P, Mg in reaction solution, | between N, mole ratio is: P:Mg:N=1:1:3 determines their consumption.With the pH value of 10M and 1M NaOH solution conditioned reaction liquid between 8.5～9.2.Stir at once after adding medicament, speed is that 400rpm stirred 10 minutes, then reduces stir speed (S.S.) to 160rpm, and continue to stop after 30 minutes stirring, after standing 2～3 hours, supernatant liquor enters anaerobic reactor.This moment, sewage hydraulic detention time in anaerobic filter was 8-14 days in traditional technology, but through after pretreatment technology in the utility model, anaerobic HRT shortens to 3～5 days.Produce methane speed and aerogenesis quality, by 1.0～1.5m in traditional technology
3/ m
3.d, 50～60%, bring up to respectively 2.0～2.5m
3/ m
3.d with 65～70%.Magnesium ammonium phosphate (MgNH in precipitation
4PO
46H
2O) and potassium-sodium phosphates magnesium (MgKNaPO
414H
2O) content accounts for 78%～93% of total precipitation quality.It is few that anaerobic filter produces sludge quantity, must spoil disposal at experimental session.
Claims (4)
1. the Waste Water Treatment of raising pigs, is characterized in that, it comprises:
One is used for reclaiming the MAP chemical precipitation pond (1) of nitrogen phosphorus composition in sewage;
One is used for processing the biochemical reactor (8) from MAP chemical precipitation pond (1) supernatant liquor out.
2. a kind of Waste Water Treatment of raising pigs according to claim 1, it is characterized in that, the supernatant liquor entrance of the anaerobic filter (2) of supernatant liquor outlet the delivering a child reactor (8) in MAP chemical precipitation pond (1), the anaerobic effluent mouth of anaerobic filter (2) connects the anaerobism water inlet of oxygen aeration tank (7), the outputted aerobic water mouth in aerobic aeration pond (7) connects the aerobic water inlet of settling tank (5), and the methane outlet of anaerobic filter (2) connects collecting methane pond (3).
3. a kind of Waste Water Treatment of raising pigs according to claim 2, is characterized in that, the effluent recycling pipe (4) in settling tank (5) water outlet is connected with aerobic aeration pond (7).
4. a kind of Waste Water Treatment of raising pigs according to claim 2, is characterized in that, the mud return line (6) of settling tank (5) is connected with anaerobic filter (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220638635 CN203007087U (en) | 2012-11-28 | 2012-11-28 | Pig-raising wastewater treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220638635 CN203007087U (en) | 2012-11-28 | 2012-11-28 | Pig-raising wastewater treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203007087U true CN203007087U (en) | 2013-06-19 |
Family
ID=48598700
Family Applications (1)
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|---|---|---|---|
| CN 201220638635 Expired - Fee Related CN203007087U (en) | 2012-11-28 | 2012-11-28 | Pig-raising wastewater treatment system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105254120A (en) * | 2015-10-16 | 2016-01-20 | 上海纳米技术及应用国家工程研究中心有限公司 | Advanced treatment method of phosphate sewage |
| CN107226560A (en) * | 2017-08-01 | 2017-10-03 | 东北大学 | A kind of method and apparatus for handling Pig raising wastewater |
| CN108947098A (en) * | 2018-06-13 | 2018-12-07 | 浙江美保龙种猪育种有限公司 | The processing method of pig breeding wastewater |
| CN110563256A (en) * | 2019-09-06 | 2019-12-13 | 广东石油化工学院 | Efficient anaerobic hydrogen production and recycling treatment method after pretreatment of pig farm wastewater |
| CN110563259A (en) * | 2019-09-06 | 2019-12-13 | 广东石油化工学院 | Pig farm wastewater anaerobic hydrogen production and recycling treatment method |
| CN113336313A (en) * | 2021-06-04 | 2021-09-03 | 重庆大学 | Constructed wetland microbial fuel cell sewage treatment device |
-
2012
- 2012-11-28 CN CN 201220638635 patent/CN203007087U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105254120A (en) * | 2015-10-16 | 2016-01-20 | 上海纳米技术及应用国家工程研究中心有限公司 | Advanced treatment method of phosphate sewage |
| CN107226560A (en) * | 2017-08-01 | 2017-10-03 | 东北大学 | A kind of method and apparatus for handling Pig raising wastewater |
| CN108947098A (en) * | 2018-06-13 | 2018-12-07 | 浙江美保龙种猪育种有限公司 | The processing method of pig breeding wastewater |
| CN110563256A (en) * | 2019-09-06 | 2019-12-13 | 广东石油化工学院 | Efficient anaerobic hydrogen production and recycling treatment method after pretreatment of pig farm wastewater |
| CN110563259A (en) * | 2019-09-06 | 2019-12-13 | 广东石油化工学院 | Pig farm wastewater anaerobic hydrogen production and recycling treatment method |
| CN113336313A (en) * | 2021-06-04 | 2021-09-03 | 重庆大学 | Constructed wetland microbial fuel cell sewage treatment device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20131128 |