A highly automated biochemical pretreatment system for aquaculture wastewater

Abstract

The invention discloses a biological breeding wastewater pretreatment system with a high automation degree. The biological breeding wastewater pretreatment system comprises a grid pond, a stirring pond, a solid-liquid separator and a primary settling tank, wherein spiral extruders are mounted between a left side plate and a right side plate of the lower box body of the solid-liquid separator; the left end of a packing auger sleeve extends downwards outside the case; a residue outlet is formed in the lower side of the end part of the extended part of the packing auger sleeve; a feeding hole is formed in the upper side of the part inside the lower case, of the packing auger sleeve; water through holes are formed in the packing auger sleeve and the bottom of the extended part of the packing auger sleeve; a wastewater collecting box is arranged below the extended part of the packing auger sleeve; wastewater buffer boxes are arranged between the upper parts of right angle trapezoidal plates on the left side and the right side of the packing auger sleeve; a wastewater inlet is formed in the back plate of the wastewater buffer box; a filtering net is arranged between the front side plate of the wastewater buffer box and the rear side plate of the feeding hole of the packing auger sleeve; the wastewater outlet is connected with the wastewater inlet; a washing water tank and a high-pressure water gun are arranged inside the rear part of the lower box body; the high-pressure water gun swings upwards, downwards, leftwards and rightwards through a water gun swinging device. The biological breeding wastewater pretreatment system is simple in structure and reasonable in design.

Description

technical field [0001] The invention relates to a biochemical pretreatment system for aquaculture wastewater with a high degree of automation. Background technique [0002] In recent years, with the development of the economy and the improvement of people's living standards, the demand for animal husbandry products has also continued to increase, which has promoted the development of my country's animal husbandry industry in the direction of scale and intensification. According to surveys, most domestic farms currently They all adopt the method of dry manure cleaning, and most of the livestock and poultry breeding wastewater produced is wastewater such as washing pens and pens. The wastewater is directly discharged or washed into rivers, lakes and reservoirs with rainwater, making the water black and smelly. Seeping into the ground for a long time will increase the nitrate content in the groundwater, deteriorate the water quality, seriously pollute the surrounding environment...

AI Technical Summary

Problems solved by technology

[0003] Breeding wastewater is mainly composed of wastewater from washing pig houses and pig manure. The water content is large, but there is also a large amount of dung. At present, the pretreatment process of ordinary wastewater includes a grid tank and a regulating tank. The grid tank can remove large impurities , but the grid tank cannot remove the dung in the aquaculture wastewater

[0004] In addition, at present, the cleaning of the filter screen of the solid-liquid separator needs to be disassembled and cleaned manually, and the cleaning efficiency is low.

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