CN102874985A - Method for treating waste pollutants in pig farm - Google Patents
Method for treating waste pollutants in pig farm Download PDFInfo
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- CN102874985A CN102874985A CN2012103938518A CN201210393851A CN102874985A CN 102874985 A CN102874985 A CN 102874985A CN 2012103938518 A CN2012103938518 A CN 2012103938518A CN 201210393851 A CN201210393851 A CN 201210393851A CN 102874985 A CN102874985 A CN 102874985A
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- wetland
- nitrogen
- phosphorus
- pig farm
- wet land
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- 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
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention discloses a method for treating waste pollutants in a pig farm. The method comprises the following steps of: A, performing anaerobic treatment on a biogas generating pit, namely building the biogas generating pit, performing anaerobic treatment on waste pollutants, which enter the biogas generating pit, in the pig farm, and killing parasites and pathogenic microorganisms through anaerobic fermentation, wherein the chemical oxygen demand (COD) content is reduced, and the normal growth of aquatic plants in a wet land is facilitated; B, performing primary ecological wet land treatment, namely planting green watermifoil, growing the green watermifoil, absorbing nitrogen and phosphorus, harvesting the watermifoil as materials covering a tea yard and a fruit yard; C, treating secondary wet land treatment, namely planting perennial bengal waterdropwort herb in winter, planting aquatic water spinach in summer, and harvesting the water spinach and the perennial bengal waterdropwort herb from the wet land each year; D, treating a tertiary economical wet land, namely planting perennial bengal waterdropwort herb in windter, planting lotus root in summer, putting natural crucians into the wet land, and harvesting the lotus root, the bengal waterdropwort herb and water products from the wet land each year. The construction cost and the running cost are low; the method is easy to operate; the nitrogen, the phosphorus and the COD (Chemical Oxygen Demand) in the waste in the pig farm can be greatly treated; and the method is extremely good in popularization and application prospect.
Description
Technical field
The present invention relates to the agricultural environment field, more specifically relate to the small-sized pig farm waste pollutant treatment process of a kind of 80-100 scale, be particularly useful for small-sized pig farm, subtropics waste pollutant and administer, realize qualified discharge.
Background technology
In recent years along with rapid development of economy, the body eutrophication of rivers and lakes becomes the important ecological environment problem that China faces gradually, frequently break out " blue-green algae " such as several large-size lake (Taihu Lake etc.) and peripheral region thereof, often being deposited by Herba Eichhorniae in a lot of rivers (river, Liuyang etc.) and streams, the obstruction river course, affects hydrobiological normal procreation and the growth such as fish.Engineering measure (remove lake silt, carry out sanitary sewage disposal etc.) is often taked in the improvement of body eutrophication; Soil processing (being used for purifying waste water by soil filtration, absorption, precipitation, ion-exchange, microbial transformation and plant absorbing etc.) etc.The local government of several large-size lake and peripheral region thereof has spent a large amount of financial resources and eutrophication is administered in the measure of manpower application project, and 1-2 restores to the original state again later on, and regulation effect often gets half the result with twice the effort.Because the present plant husbandry of China and aquaculture seriously disconnect, the excessive Phosphorus chemical fertilizer of nitrogen of using of plant husbandry causes a large amount of accumulation of farmland nitrogen phosphorus and loss; The aquaculture waste pollutant directly discharges.Only have farming district environment nitrogen phosphorus to get effectively control, significantly reduce to large-size lake and carry denitrification phosphorus, eutrophication control work will be got twice the result with half the effort.
Summary of the invention
The objective of the invention is to be to provide the small-sized pig farm waste pollutant treatment process of a kind of 60-80 scale; this small-sized pig farm waste pollutant treatment process suit measures to local conditions to utilize about 1100-1200m2 ecological and economic wetland to absorb and the waste of dissolving in nitrogen and phosphorus, the content of nitrogen and phosphorus is controlled at State Environmental Protection Administration in " national livestock and poultry breeding industry emission standard " scope of ratifying November 26 calendar year 2001 in the terminal discharge water of wetland.The method is easy to operate, and cost is low, and the vast subtropical zone application in the middle and lower reach of Yangtze River suits.
The treatment process of a kind of pig farm waste pollutant the steps include:
A, methane-generating pit anaerobic treatment: build 50m
3Methane-generating pit, the pig farm waste enters methane-generating pit carry out anaerobic treatment after, although nitrogen and content than little, have parasite and pathogenic microorganism to be killed through anaerobically fermenting, particularly machine mass degradation (the COD content decrease 85-90%) normal growth that is conducive to the wetland waterplant is grown.
B, one-level ecological wetland are processed (one-level Wetland Area 100-120m
2), plant green watermifoil (Myriophyliumclatinoides), retaining degree of depth 8-12cm.Green watermifoil increment is large (can gather in 5-8 time results dry-matter 900-1000kg/100m in 1 year
2), the absorbed dose large (nitrogen content is 30.72g.kg-1 in the plant, and the content of phosphorus is 1.25g.kg-1) to nitrogen and phosphorus is equivalent to 100m
2Ecological wetland absorbed and dissolve 27.65-30.72kg nitrogen and 1.13-1.25kg phosphorus in 1 year.Can be used as tea place, orchard covering material (green manure) after the watermifoil results, or be processed into feed.
C, the economic wetland of secondary are processed (secondary Wetland Area 440-460m
2): plant perennial Wildcelery Herb (Oenathejavantica) winter (on October-30 on the 25th), plant aquatic mater convolvulus (Lpomoeaaquatica), the retaining degree of depth 12-16cm summer (20-April 30 April).The vegetable productss such as the 3000-4000kg mater convolvulus that this economic wetland can be gathered in the crops every year and 1000-1500kg Wildcelery Herb, the economic wetland output value can reach 3000-4000 unit every year.
D, three grades of economic wetlands are processed (three grades of wetland Wetland Area 580-620m
2): plant perennial Wildcelery Herb (Oenathejavantica) winter (on October-30 on the 25th); Summer (20-April 30 April) Lotus planting (Nelumbonucifera), retaining degree of depth 28-32cm, and put into native crucian (Carassiusauratus) fry 600 tails.This economic wetland can annual results the vegetables such as 3000-3500kg lotus rhizome, 1000-1200kg Wildcelery Herb and the fishery products such as 300kg soil crucian, the economic wetland output value can reach 3500-4500 unit every year.
Above-mentioned four steps relation each other is described in further detail:
Steps A: methane-generating pit is that the pig farm waste is processed through anaerobically fermenting, organic substance is degraded to 400-500mg/kg from 3000-4000mg/kg to be conducive to plant normal growth ecological wetland and the economic wetland (show that through applicant's foliage filter screening test-results organic content is higher than in the water body environment of 800mg/kg, the waterplant such as green watermifoil can not normal growth; But be lower than the water body environment medium green watermifoil normal growth of 500mg/kg);
Step B: ecological wetland is to select plantation to suit to grow at high density ammonium nitrogen water body environment, the green watermifoil that biomass is large (shows through applicant's foliage filter screening test-results, be in the water body environment of 500-600mg/kg at ammonium nitrogen and total nitrogen content, only has green watermifoil, Herba Eichhorniae (Eichhorniacrassipes), mullet grass (Pontederiacordata) and frogbit (Hydrocharis dubia) but etc. minority waterplant normal growth, it is because 1. its absorbed dose to nitrogen phosphorus is maximum in the shaker test plant that the present invention selects to plant green watermifoil, 2. its root stock sprawl growth is in mud, stolon is close and numerous to be distributed in the water, can effectively tackle waste residue floating in the Wastewater from Pig Farm) absorbed nitrogen phosphorus in luxuriant process of growth, total nitrogen content in the water body environment is reduced to Wildcelery Herb, mater convolvulus, the level that the aquatic cash crop such as lotus rhizome can normal growth grow (shows through applicant's foliage filter screening test-results, Wildcelery Herb, mater convolvulus, lotus rhizomes etc. can only be that normal growth is grown in the water body environment below the 150mg/kg at ammonium nitrogen and total nitrogen content), this wetland is to reduce ammonium nitrogen, the ecological benefits such as total nitrogen and total phosphorus are that (green watermifoil absorbs ammonium nitrogen in process of growth to the master in a large number, ammonium nitrogen in the waste water and total nitrogen content are dropped to below the 100mg/kg), the suitable all kinds of cash crop of the waste water that is discharged into the economic wetland of secondary are grown normally;
Step C: utilize aquatic cash crop Wildcelery Herb and mater convolvulus growth and development process absorbed nitrogen and phosphorus in the economic wetland of secondary, further reduce the content of nitrogen and phosphorus in the waste water;
Step D: utilize aquatic cash crop Wildcelery Herb and lotus rhizome growth and development process absorbed nitrogen and phosphorus in the economic wetland of secondary; And native crucian is stirred mud at active procedure, strengthens soil to the absorption of available phosphorus in the waste water, and further purifying water body is realized qualified discharge.
The present invention compares with existing sewage treatment project, has the following advantages and effect:
1. construction cost is low: existing sewage treatment project need to be built the mechanical means such as anaerobic pond, aeration tank and corresponding solid-liquid separation centrifuge, air blast aeration machines, generally between ten thousand yuan of 60-80, the peasant is difficult to accept for the sewage treatment project construction of a small-sized plant (60-80 pig scale) and equipment investment.Pig farm of the present invention waste pollutant treatment process, ecological wetland and economic wetland rely on respectively 3 paddy fields of certain altitude poor (degree is poor between 10-30cm) to set up, and do not need construction cost; Main construction cost is 50m
3Methane-generating pit (construction cost is about 30,000 yuan), cultivation peasant household can accept.
2. running cost is low, simple to operate: aeration machines tool equipment claimed electric power in the existing sewage disposal technology; This treatment process pig house-methane-generating pit--1 grade of ecological wetland-2 grade economic wetland-3 grade economic wetland-discharge outlet is to rely on landform to arrange from high to low, and sewage is at the internal system automatic flowing, without any need for power and electric power; The plant of ecological wetland and the plantation of economic wetland all is the common plant in rural area and cash crop, does not need special technology, and cultivation management is convenient; The income of aquatic cash crop is not less than Rice Cropping, and cultivation peasant household is acceptant.
3. regulation effect is good: the discarded sewage water treatment method in this pig farm is by the methane-generating pit anaerobically fermenting COD that effectively degrades, by wetland plantation nitrogen, the phosphorus receptivity is strong, biomass is large waterplant are effectively reduced ammonium nitrogen, total phosphorous, realize Wastewater from Pig Farm after treatment group up to standard put (table 1 is each discharge outlet nitrogen for the treatment of system, phosphorus and COD content).
Each discharge outlet nitrogen of table 1 Wastewater from Pig Farm treatment system, phosphorus and COD content
In a word, present method, construction cost and running cost are low, simple to operate, are easily accepted by cultivation peasant household, nitrogen, phosphorus and chemical oxygen demand (COD) (COD) in the waste of pig farm are had fabulous treatment effect, and there is good popularizing application prospect vast subtropical zone in the middle and lower reach of Yangtze River.
Embodiment
Embodiment 1:
The small-sized Wastewater from Pig Farm treatment process of a kind of 80-100 scale, it comprises the following steps:
A, build 50m
3Methane-generating pit.
B, one-level ecological wetland are processed (one-level Wetland Area 100-120m
2), plant green watermifoil (Myriophyliumclatinoides), retaining degree of depth 8-12cm.The watermifoil increment is large (can gather in 5-8 time results dry-matter 900-1000kg/100m in 1 year
2), large (nitrogen content is 30.72g.kg in the plant to the absorbed dose of nitrogen and phosphorus
-1, the content of phosphorus is 1.25g.kg
-1), be equivalent to 100m
2Ecological wetland absorbed and dissolve 27.65-30.72kg nitrogen and 1.13-1.25kg phosphorus in 1 year.Can be used as tea place, orchard covering material (green manure) after the watermifoil results, or be processed into feed.
C, the economic wetland of secondary are processed (secondary Wetland Area 440-460m
2): plant perennial Wildcelery Herb (Oenathejavantica) winter (on October-30 on the 25th), plant aquatic mater convolvulus (Lpomoeaaquatica), the retaining degree of depth 12-16cm summer (20-April 30 April).The vegetable productss such as the 3000-4000kg mater convolvulus that this economic wetland can be gathered in the crops every year and 1000-1500kg Wildcelery Herb, the economic wetland output value can reach 3000-4000 unit every year.
D, three grades of economic wetlands are processed (three grades of wetland Wetland Area 580-620m
2): plant perennial Wildcelery Herb (Oenathejavantica) winter (on October-30 on the 25th); Summer (20-April 30 April) Lotus planting (Nelumbonucifera), retaining degree of depth 28-32cm, and put into native crucian (Carassiusauratus) fry 600 tails.This economic wetland can annual results the vegetables such as 3000-3500kg lotus rhizome, 1000-1200kg Wildcelery Herb and the fishery products such as 300kg soil crucian, the economic wetland output value can reach 3500-4500 unit every year.
Need 20cm left and right sides difference of altitude between F, methane-generating pit, one-level ecological wetland, the economic wetland of secondary and three grades of each systems such as economic wetland, guarantee in the treatment system of whole pig farm waste pollutant the natural flow of (methane-generating pit → economic wetland of one-level ecological wetland → secondary → three grades economic wetland between) waste water, waste water is mobile without any need for power in the system, avoids increasing system operation cost.
Claims (1)
1. the treatment process of a pig farm waste pollutant the steps include:
A, methane-generating pit anaerobic treatment: build the 50m3 methane-generating pit, the pig farm waste enters methane-generating pit carry out anaerobic treatment after, the content of nitrogen is little, has parasite and pathogenic microorganism to be killed through anaerobically fermenting, the machine mass degradation: COD content decrease 85-90%, the normal growth of wetland waterplant is grown;
B, one-level ecological wetland are processed: one-level Wetland Area 100-120 m2, plant green watermifoil, retaining degree of depth 8-12cm, green watermifoil growth, absorption to nitrogen and phosphorus: nitrogen content is 30.72gkg-1 in the plant, and the content of phosphorus is 1.25gkg-1, and 100 m2 ecological wetlands absorbed and dissolve 27.65-30.72kg nitrogen and 1.13-1.25kg phosphorus in 1 year, the watermifoil results are rear as tea place, orchard covering material, or are processed into feed;
C, the economic wetland of secondary are processed: secondary Wetland Area 440-460m2, winter: plantation in-30 days on the 25th October unboiled water celery, summer: plant aquatic mater convolvulus 20-April 30 April, retaining degree of depth 12-16cm, wetland annual results 3000-4000kg mater convolvulus and 1000-1500kg Wildcelery Herb;
D, three grades of economic wetlands are processed: three grades of wetland Wetland Area 580-620m2, winter: plant perennial Wildcelery Herb on October-30 on the 25th; Summer: 20-April 30 April Lotus planting, retaining degree of depth 28-32cm, and put into native young crucian 600 tails, 3000-3500kg lotus rhizome, 1000-1200kg Wildcelery Herb and the 300kg crucian of the annual results of wetland.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103359825A (en) * | 2013-07-24 | 2013-10-23 | 中国科学院亚热带农业生态研究所 | Method for treating pig farm wastewater by using straw |
| CN103359882A (en) * | 2013-07-24 | 2013-10-23 | 中国科学院亚热带农业生态研究所 | Method for treating pig farm waste pollutant |
| CN103359881A (en) * | 2013-07-24 | 2013-10-23 | 中国科学院亚热带农业生态研究所 | Method for reducing and controlling wastewater pollution of pig farm |
| CN103435234A (en) * | 2013-09-12 | 2013-12-11 | 中国科学院亚热带农业生态研究所 | Method for reducing and controlling waste pollutants in scattered culture zones of hills |
| CN103449607A (en) * | 2013-07-24 | 2013-12-18 | 中国科学院亚热带农业生态研究所 | Non-point source pollution abatement method for plain river network regions |
| CN103504172A (en) * | 2013-10-17 | 2014-01-15 | 中国科学院亚热带农业生态研究所 | Myriophylium clatinoides containing pig feed and preparation method thereof |
| CN103880257A (en) * | 2014-04-14 | 2014-06-25 | 中国科学院亚热带农业生态研究所 | Ecological combined treatment method and device for rural distributed sewage |
| CN107445302A (en) * | 2017-07-26 | 2017-12-08 | 中国科学院水生生物研究所 | The Intensive Farm of Pig Raising waste water multi-stage ecological agricultural consumption pool and its method |
| CN107500483A (en) * | 2017-09-30 | 2017-12-22 | 中国科学院亚热带农业生态研究所 | A kind of domestic sewage in rural areas ecological treatment method and system |
| CN111018237A (en) * | 2019-11-27 | 2020-04-17 | 广州市龙运博环保技术有限公司 | Method for efficiently purifying sewage of livestock and poultry farm by using water spinach |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103359825A (en) * | 2013-07-24 | 2013-10-23 | 中国科学院亚热带农业生态研究所 | Method for treating pig farm wastewater by using straw |
| CN103359882A (en) * | 2013-07-24 | 2013-10-23 | 中国科学院亚热带农业生态研究所 | Method for treating pig farm waste pollutant |
| CN103359881A (en) * | 2013-07-24 | 2013-10-23 | 中国科学院亚热带农业生态研究所 | Method for reducing and controlling wastewater pollution of pig farm |
| CN103359825B (en) * | 2013-07-24 | 2015-03-04 | 中国科学院亚热带农业生态研究所 | Method for treating pig farm wastewater by using straw |
| CN103449607A (en) * | 2013-07-24 | 2013-12-18 | 中国科学院亚热带农业生态研究所 | Non-point source pollution abatement method for plain river network regions |
| CN103359882B (en) * | 2013-07-24 | 2015-03-04 | 中国科学院亚热带农业生态研究所 | Method for treating pig farm waste pollutant |
| CN103359881B (en) * | 2013-07-24 | 2014-12-17 | 中国科学院亚热带农业生态研究所 | Method for reducing and controlling wastewater pollution of pig farm |
| CN103449607B (en) * | 2013-07-24 | 2014-08-27 | 中国科学院亚热带农业生态研究所 | Non-point source pollution abatement method for plain river network regions |
| CN103435234B (en) * | 2013-09-12 | 2014-12-17 | 中国科学院亚热带农业生态研究所 | Method for reducing and controlling waste pollutants in scattered culture zones of hills |
| CN103435234A (en) * | 2013-09-12 | 2013-12-11 | 中国科学院亚热带农业生态研究所 | Method for reducing and controlling waste pollutants in scattered culture zones of hills |
| CN103504172A (en) * | 2013-10-17 | 2014-01-15 | 中国科学院亚热带农业生态研究所 | Myriophylium clatinoides containing pig feed and preparation method thereof |
| CN103880257A (en) * | 2014-04-14 | 2014-06-25 | 中国科学院亚热带农业生态研究所 | Ecological combined treatment method and device for rural distributed sewage |
| CN103880257B (en) * | 2014-04-14 | 2015-09-30 | 中国科学院亚热带农业生态研究所 | The ecologic assemblage treatment process of a kind of rural area decentralized type sewage and device |
| CN107445302A (en) * | 2017-07-26 | 2017-12-08 | 中国科学院水生生物研究所 | The Intensive Farm of Pig Raising waste water multi-stage ecological agricultural consumption pool and its method |
| CN107500483A (en) * | 2017-09-30 | 2017-12-22 | 中国科学院亚热带农业生态研究所 | A kind of domestic sewage in rural areas ecological treatment method and system |
| CN111018237A (en) * | 2019-11-27 | 2020-04-17 | 广州市龙运博环保技术有限公司 | Method for efficiently purifying sewage of livestock and poultry farm by using water spinach |
| CN111018237B (en) * | 2019-11-27 | 2022-11-01 | 广州市龙运博环保技术有限公司 | Method for efficiently purifying sewage of livestock and poultry farm by using water spinach |
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Application publication date: 20130116 Assignee: Great Yangtze River Environmental Engineering Technology Co.,Ltd. Assignor: Institute of Subtropical Agriculture, Chinese Academy of Sciences Contract record no.: 2015420000153 Denomination of invention: Method for treating waste pollutants in pig farm Granted publication date: 20140115 License type: Exclusive License Record date: 20150805 |
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