Method for treating livestock and poultry breeding waste water by utilizing plant factory
A livestock and poultry breeding wastewater and factory technology, applied in biological water/sewage treatment, filtration treatment, sedimentation treatment, etc., can solve the problems affecting the sustainability of livestock and poultry sewage treatment, the treatment effect is easily affected by the season, and the space utilization rate is not high. problems, to achieve the effects of easy promotion and application, high-precision environmental control, and reduced occupied area
Pending Publication Date: 2019-08-23
YUNNAN ANIMAL SCI & VETERINARY INST
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Problems solved by technology
But this method for processing livestock and poultry wastewater still has many deficiencies in the operation process: (1) the utilization rate of space is not high, and still needs a large floor area; (2) the treatment effect is easily affected by the season, seriously Affects the sustainability of livestock wastewater treatment
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[0030] In the pig farm of Yunnan Academy of Animal Husbandry and Veterinary Sciences (100 reproductive sows, 300 piglets: about 3 cubic meters of waste water per day, the COD content in the waste water is 3762.90 mg / L, the ammonia nitrogen content is 1000 mg / L, and the total phosphorus content is 61.38 mg / L ) has set up a kind of method demonstration project utilizing plant factory to process livestock and poultry breeding waste water, and it comprises the following steps: comprises the following steps:
[0031]1) Pre-treatment of livestock and poultry breeding wastewater: Livestock and poultry breeding wastewater is directly sent to the wastewater collection tank after solid-liquid separation. After the collection tank, a 300cm×200cm×150cm biological matrix treatment tank is established, and straw is put in, and 0.9 tons of straw is added for the first time , and then add 0.4-0.5 tons of straw every 6 months as needed. The aquaculture wastewater is stored in the collection po...
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The invention relates to a method for treating livestock and poultry breeding waste water by using a plant factory, and the method comprises the following steps: pretreatment of the livestock and poultry breeding waste water, precipitation treatment, plant factory treatment, discharge and watermifoil resource utilization, wherein four stages of watermifoil treatment cells are arranged in the plantfactory, each cell consists of 3-5 layers of vertically arranged layer frames (5), each layer is provided with a cultivation box (6), watermifoil is planted in the cultivation box, the cultivation box (6) is 35 cm high, an artificial light source (4) is arranged at 60-70 cm above the box body, and illumination is carried out for 10 hours every day; each stage of the watermifoil treatment cell isprovided with a nutrient solution pool (8) and a water pump (7), a pipeline (10) is arranged between the layer frames, and is connected with the nutrient solution pool (8), the water pump (7) and eachlayer of cultivation box (6). The four stages of watermifoil treatment cells are connected by valves (9) and a pipeline (10). The method f greatly reduces the land occupation area of the waste watertreated by the watermifoil and effectively solves the influence of environmental conditions on the growth of the watermifoil.
Description
technical field [0001] The invention relates to the fields of environmental protection and water treatment, in particular to a method for treating livestock and poultry breeding wastewater by utilizing a plant factory. Background technique [0002] In recent years, the livestock and poultry breeding industry has developed rapidly, but the problem of concentrated discharge of large amounts of wastewater from large-scale breeding is also very prominent. According to statistics, the utilization rate of livestock and poultry breeding wastewater in my country is only about 60%, and a large amount of breeding wastewater is discharged without treatment, which poses a serious challenge to ecological security. At present, the treatment of livestock and poultry wastewater mainly includes returning to the field, natural treatment and industrial treatment. Returning to the field is the most traditional and cost-effective disposal method for livestock and poultry breeding sewage, which ...
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IPC IPC(8): C02F9/14C02F103/20
CPCC02F1/001C02F3/32C02F3/322C02F9/00C02F2001/007C02F2103/20
Inventor 胡清泉赵智勇郭晋杨仁灿常雅洁孙志旭陈吉红张斌相德才赵彦光刘韶娜
Owner YUNNAN ANIMAL SCI & VETERINARY INST