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Combined type cultivation wastewater purification method and device

A technology for aquaculture wastewater and purification devices, applied in chemical instruments and methods, water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problems of large maintenance and management, high operating costs, and many mechanical equipment, and achieve raw materials Easy to obtain, reduce sludge production, and simple equipment

Inactive Publication Date: 2008-03-12
HUBEI UNIV
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Problems solved by technology

Its main disadvantages are the large investment, about 1.2-1.5 million yuan per 10,000 pig farm feces and sewage treatment; the second is high energy consumption. 3 The power consumption of sewage is about 2-4kW·h; the third is the high operating cost, every 1m of treatment 3 Sewage needs to run about 2.0 yuan; Fourth, there are many mechanical equipment and a large amount of maintenance and management; Fifth, specialized technical personnel are required to manage

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  • Combined type cultivation wastewater purification method and device
  • Combined type cultivation wastewater purification method and device
  • Combined type cultivation wastewater purification method and device

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Embodiment Construction

[0017] This example is used to explain the technical solution of the present invention, and the present invention is not limited to the protection scope of the following examples.

[0018] The method of this embodiment is: after the aquaculture wastewater is precipitated by the sedimentation tank, the sedimentation tank does not add any filler, and its main function is to intercept and precipitate the solid matter in the sewage; then fill the yellow sand through the filter tank, and its main function is to pass Anaerobic filtration to remove suspended particles in the sewage. The filter box is divided into two stages of filtration, that is, coarse yellow sand with a particle size of 3-6mm and fine yellow sand with a particle size of 1-3mm; the lower part of the anaerobic reaction box is filled with rotten wood , the upper part is filled with ceramsite, and the C / N ratio of the rotten wood should be greater than 7. Its main function is to remove nitrogen. It is best to use broad...

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Abstract

The present invention discloses a compound purifying method and device of cultivation wastewater which is accomplished by the following processes. The deposited cultivation wastewater after filter seeps through deadwood to carry through anaerobic and denitrogenating treatment and then seeps through bamboo charcoal and limestone to carry through aerobic aeration treatment; after internal electrolysis treatment and absorption treatment, the wastewater purifying is accomplished and the wastewater is discharged. The device system has no machinery and is simple and convenient to maintenance. Workers after simple training can self operate and maintain. The present invention aims at the characteristic of high COD, total nitrogen, total phosphorus and solid suspended substances content of cultivation wastewater. The present invention has designed a distributed treatment flow and has the advantages of simple device, easy acquisition of material and easy maintenance. The present invention can solve the purifying problem of cultivation wastewater in culturing farms with small or medium scale.

Description

technical field [0001] The invention belongs to sewage treatment, in particular to a method and device for purifying aquaculture wastewater. Background technique [0002] The sewage of livestock and poultry farms contains a large amount of pollutants, and the biochemical indicators of the sewage are extremely high, such as the COD of the mixed excrement of pig manure and urine. cr The value can reach 8100mg / L. After these high-concentration, untreated sewage discharges into natural water bodies, they can increase the suspended solids (SS), chemical oxygen demand (COD), biochemical oxygen demand (BOD) and microbial content in the water, especially Nutrients such as nitrogen (N) and phosphorus (P) in sewage will promote the mass reproduction of lower aquatic organisms, make the water black and smelly, and lead to eutrophication of the water. [0003] With the emergence of environmental problems in large-scale farms, it was only after the 1980s that domestic and foreign count...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/30C02F1/461C02F1/28
Inventor 李兆华胡细全朱联东马安宁
Owner HUBEI UNIV
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