CN105174604A - Method for treating pig farm wastewater through combination of stabilization ponds - Google Patents

Abstract

The invention relates to a method for treating pig farm wastewater through combination of stabilization ponds. The method is characterized in that the pig farm wastewater undergoes solid-liquid separation, layer-by-layer filtering treatment of four stabilization ponds is carried out, and especially microbiota decomposition is used to realize sewage cycle use. Organic matters are decomposed layer by layer under the action of microbiota; nitrogen and phosphorus are absorbed by plants, so the removal rate is high; and the method also has the advantages of simple operation and low cost.

Description

A kind of method of combinative stability pool process piggery wastewater

Technical field

The present invention relates to the method for a kind of combinative stability pool process piggery wastewater, belong to field of waste water treatment.

Background technology

Along with the development of China's livestock industry; being growing more intense of inter-industry competition; mass-producing, the intensivization development of livestock industry have become an inexorable trend; Large-scale pig farm has higher its feeding technology, and unified management, reduces cost; improve economic benefit; but due to the fecal sewage concentrated in a large number, discharge the problem of environmental pollution that causes also more and more serious, and report according to related data, in China big city, the population equivalent of the fecaluria blowdown of livestock and poultry breeding industry is more than 3000-4000 ten thousand.Produce stench containing large amount of organic, nitrogen, phosphorus, suspended substance and pathogenic bacterium in the fecaluria movement of aquaculture and waste water, extreme influence is caused to environmental quality, be badly in need of administering.

At present, the method of the method for process wastewater from pig farm mainly contains also field process, naturally process and industrial treatment pattern, wherein, also field tupe is a kind of traditional, cost-effective method of disposal, he is by fecaluria, wash-down water imposes in soil, organic substance is decomposed and changes into soil ulmin and plant growth factor, organonitrogen phosphorus changes into inorganic nitrogen phosphorus, thus realize the recycle of nutrient, if but the method without any process just directly, continuously, excessive uses, cause bad impact then can to the growth of soil and farm crop, as caused crop excessive growth, turn green, lodging, output is reduced greatly, postpone the ripening stage, affect the production etc. of succeeding crop.

Summary of the invention

The technical problem that the present invention mainly solves: detrimentally affect can be caused to soil farm crop for improper use when also field processes at present, propose the method for a kind of combinative stability pool process piggery wastewater, the method is by carrying out step-by-step processing to pig farm, realize wastewater ocean disposal, by the mode of water cycle, effectively eliminate the organism in piggery wastewater, nitrogen phosphorus has also been absorbed by plants simultaneously.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is, its concrete steps are:

(1) unify to collect to piggery wastewater, by screen cloth, the separation of solid phase liquid filtration is carried out to it, and by the mode of anaerobically fermenting, the Mierocrystalline cellulose in solid is carried out fermentation decomposition, obtain low molecular cellulose starch mixture for subsequent use as fish meal stored dry;

(2) build a pond 1, pond is 7 ~ 9m deeply, introduces piggery wastewater sewer line, be paved with the second pond mud after 0.8 ~ 1.0m treatment of dyeing wastewater, cover piggery wastewater sewer line at the bottom of pond at 0.5m place at the bottom of pond;

(3) build a pond 2, pond is 5 ~ 7m deeply, at 3 ~ 4m place at the bottom of pond, dig a land regions, adopt enclosure wall to surround design around, land regions covers the thick riverway sludge of 0.5 ~ 0.8m simultaneously, the sewage overflowed from pond 1 enters pond 2 land regions through pipeline, slowly rises, and reduces flow velocity;

(4) pond 3 is built, Chi Shen is 3 ~ 5m, blue-green algae is put on surface, pond, fish are put in water, the sewage overflowed from pond 2 enters pond 3 through pipeline, pond 3 by oxygen enrichment in air and algae photosynthesis provide oxygen and further for aerobic microbiological group utilization, simultaneously by the ammonia nitrogen waste water in sewage for fish and blue-green algae provide nutritive substance, cyclic regeneration;

(5) build a pond 4, pond is 0.5 ~ 1.0m deeply, and the gradient is 0.05 ~ 0.08, is paved with 80 ~ 100 order zeolites at the bottom of pond, and out, slowly smooth in pond 4, the water overflowed is the water after process to the sewage overflow processed from pond 3.

Described aerobic microbiological group is symbiotic nitrogen-fixing bacteria and pneumococcus mictium.

The invention has the beneficial effects as follows:

(1) organism is under the effect of micropopulation, decomposes layer by layer;

(2) nitrogen phosphorus is absorbed by plants, and clearance is high;

(3) simple to operate, cost is low.

Embodiment

First unify to collect to piggery wastewater, by screen cloth, the separation of solid phase liquid filtration is carried out to it, and by the mode of anaerobically fermenting, the Mierocrystalline cellulose in solid is carried out fermentation decomposition, obtain low molecular cellulose starch mixture for subsequent use as fish meal stored dry; Build a pond 1 again, pond is 7 ~ 9m deeply, introduces piggery wastewater sewer line, be paved with the second pond mud after 0.8 ~ 1.0m treatment of dyeing wastewater, cover piggery wastewater sewer line at the bottom of pond at 0.5m place at the bottom of pond; Then build a pond 2, pond is 5 ~ 7m deeply, at 3 ~ 4m place at the bottom of pond, dig a land regions, adopt enclosure wall to surround design around, land regions covers the thick riverway sludge of 0.5 ~ 0.8m simultaneously, the sewage overflowed from pond 1 enters pond 2 land regions through pipeline, slowly rises, and reduces flow velocity; Build a pond 3 afterwards, Chi Shen is 3 ~ 5m, blue-green algae is put on surface, pond, fish are put in water, the sewage overflowed from pond 2 enters pond 3 through pipeline, pond 3 by oxygen enrichment in air and algae photosynthesis provide oxygen and further for aerobic microbiological group utilization, simultaneously by the ammonia nitrogen waste water in sewage for fish and blue-green algae provide nutritive substance, cyclic regeneration; Finally build a pond 4, pond is 0.5 ~ 1.0m deeply, and the gradient is 0.05 ~ 0.08, is paved with 80 ~ 100 order zeolites at the bottom of pond, and out, slowly smooth in pond 4, the water overflowed is the water after process to the sewage overflow processed from pond 3.

First unify to collect to piggery wastewater, by screen cloth, the separation of solid phase liquid filtration is carried out to it, and by the mode of anaerobically fermenting, the Mierocrystalline cellulose in solid is carried out fermentation decomposition, obtain low molecular cellulose starch mixture for subsequent use as fish meal stored dry; Build a pond 1 again, pond is 9m deeply, introduces piggery wastewater sewer line, be paved with the second pond mud after 1.0m treatment of dyeing wastewater, cover piggery wastewater sewer line at the bottom of pond at 0.5m place at the bottom of pond; Then build a pond 2, pond is 7m deeply, at 4m place at the bottom of pond, dig a land regions, adopt enclosure wall to surround design around, land regions covers the thick riverway sludge of 0.8m simultaneously, the sewage overflowed from pond 1 enters pond 2 land regions through pipeline, slowly rises, and reduces flow velocity; Build a pond 3 afterwards, Chi Shen is 5m, blue-green algae is put on surface, pond, fish are put in water, the sewage overflowed from pond 2 enters pond 3 through pipeline, pond 3 by oxygen enrichment in air and algae photosynthesis provide oxygen and further for aerobic microbiological group utilization, simultaneously by the ammonia nitrogen waste water in sewage for fish and blue-green algae provide nutritive substance, cyclic regeneration; Finally build a pond 4, pond is 1.0m deeply, and the gradient is 0.08, is paved with 100 order zeolites at the bottom of pond, and out, slowly smooth in pond 4, the water overflowed is the water after process to the sewage overflow processed from pond 3.Find after testing, the nitrogen and phosphorus content clearance in piggery wastewater reaches 99.5 ﹪.

First unify to collect to piggery wastewater, by screen cloth, the separation of solid phase liquid filtration is carried out to it, and by the mode of anaerobically fermenting, the Mierocrystalline cellulose in solid is carried out fermentation decomposition, obtain low molecular cellulose starch mixture for subsequent use as fish meal stored dry; Build a pond 1 again, pond is 7m deeply, introduces piggery wastewater sewer line, be paved with the second pond mud after 0.8m treatment of dyeing wastewater, cover piggery wastewater sewer line at the bottom of pond at 0.5m place at the bottom of pond; Then build a pond 2, pond is 5m deeply, at 3m place at the bottom of pond, dig a land regions, adopt enclosure wall to surround design around, land regions covers the thick riverway sludge of 0.5m simultaneously, the sewage overflowed from pond 1 enters pond 2 land regions through pipeline, slowly rises, and reduces flow velocity; Build a pond 3 afterwards, Chi Shen is 3m, blue-green algae is put on surface, pond, fish are put in water, the sewage overflowed from pond 2 enters pond 3 through pipeline, pond 3 by oxygen enrichment in air and algae photosynthesis provide oxygen and further for aerobic microbiological group utilization, simultaneously by the ammonia nitrogen waste water in sewage for fish and blue-green algae provide nutritive substance, cyclic regeneration; Finally build a pond 4, pond is 0.5m deeply, and the gradient is 0.05, is paved with 80 order zeolites at the bottom of pond, and out, slowly smooth in pond 4, the water overflowed is the water after process to the sewage overflow processed from pond 3.Find after testing, the nitrogen and phosphorus content clearance in piggery wastewater reaches 99.6 ﹪.

First unify to collect to piggery wastewater, by screen cloth, the separation of solid phase liquid filtration is carried out to it, and by the mode of anaerobically fermenting, the Mierocrystalline cellulose in solid is carried out fermentation decomposition, obtain low molecular cellulose starch mixture for subsequent use as fish meal stored dry; Build a pond 1 again, pond is 9m deeply, introduces piggery wastewater sewer line, be paved with the second pond mud after 0.8m treatment of dyeing wastewater, cover piggery wastewater sewer line at the bottom of pond at 0.5m place at the bottom of pond; Then build a pond 2, pond is 5m deeply, at 3m place at the bottom of pond, dig a land regions, adopt enclosure wall to surround design around, land regions covers the thick riverway sludge of 0.5m simultaneously, the sewage overflowed from pond 1 enters pond 2 land regions through pipeline, slowly rises, and reduces flow velocity; Build a pond 3 afterwards, Chi Shen is 3 ~ 5m, blue-green algae is put on surface, pond, fish are put in water, the sewage overflowed from pond 2 enters pond 3 through pipeline, pond 3 by oxygen enrichment in air and algae photosynthesis provide oxygen and further for aerobic microbiological group utilization, simultaneously by the ammonia nitrogen waste water in sewage for fish and blue-green algae provide nutritive substance, cyclic regeneration; Finally build a pond 4, pond is 1.0m deeply, and the gradient is 0.08, is paved with 100 order zeolites at the bottom of pond, and out, slowly smooth in pond 4, the water overflowed is the water after process to the sewage overflow processed from pond 3.Find after testing, the nitrogen and phosphorus content clearance in piggery wastewater reaches 99.9 ﹪.

Claims (2)

1. a method for combinative stability pool process piggery wastewater, is characterized in that concrete operation step is:

(1) unify to collect to piggery wastewater, by screen cloth, the separation of solid phase liquid filtration is carried out to it, and by the mode of anaerobically fermenting, the Mierocrystalline cellulose in solid is carried out fermentation decomposition, obtain low molecular cellulose starch mixture for subsequent use as fish meal stored dry;

(2) build a pond 1, pond is 7 ~ 9m deeply, introduces the second pond mud after being paved with 0.8 ~ 1.0m treatment of dyeing wastewater at the bottom of piggery wastewater sewer line pond, cover piggery wastewater sewer line at 0.5m place at the bottom of pond;

(3) build a pond 2, pond is 5 ~ 7m deeply, at 3 ~ 4m place at the bottom of pond, dig a land regions, adopt enclosure wall to surround design around, land regions covers the thick riverway sludge of 0.5 ~ 0.8m simultaneously, the sewage overflowed from pond 1 enters pond 2 land regions through pipeline, slowly rises, and reduces flow velocity;

(4) pond 3 is built, Chi Shen is 3 ~ 5m, blue-green algae is put on surface, pond, fish are put in water, the sewage overflowed from pond 2 enters pond 3 through pipeline, pond 3 by oxygen enrichment in air and algae photosynthesis provide oxygen and further for aerobic microbiological group utilization, simultaneously by the ammonia nitrogen waste water in sewage for fish and blue-green algae provide nutritive substance, cyclic regeneration;

(5) build a pond 4, pond is 0.5 ~ 1.0m deeply, and the gradient is 0.05 ~ 0.08, is paved with 80 ~ 100 order zeolites at the bottom of pond, and out, slowly smooth in pond 4, the water overflowed is the water after process to the sewage overflow processed from pond 3.

2. the method for a kind of combinative stability pool process piggery wastewater according to claim 1, is characterized in that: described aerobic microbiological group is symbiotic nitrogen-fixing bacteria and pneumococcus mictium.