Multistage aerobic modified purifying groove treating agricultural household sewage

Abstract

The invention belongs to a multistage aerobic modified purifying groove treating agricultural household sewage. The modified purifying groove comprises a shell of the purifying groove, a first latticeanaerobic tank, a second lattice aerobic tank, a third lattice aerobic tank, a fourth lattice aerobic tank, a fifth lattice sedimentation tank, a sixth clean water disinfecting tank, an aerating fan,an aerating filler, a sludge separating filler, a time controller, an aerating disk, a sludge bump, a sterilizing and disinfecting machine, a liquid passing pipe, a slag hole and an operating and controlling box. The modified purifying groove has the advantage that the quality of discharged water stably meets first-grade A standards stipulated in Urban Sewage Treatment Plant Pollutant DischargingStandards (GB 18918-2002), latrine liquid dung and domestic sewage of agricultural families distributed sparsely or in remote mountainous region are subjected to purification and standardized treatment, and creativity, novelty and advancement are achieved.

Description

technical field [0001] The invention relates to a modified purification tank for multi-stage aerobic treatment of rural household sewage, which belongs to the technical field of environmental protection; Background technique [0002] With the implementation of China's rural toilet revolution and rural revitalization plan, it is required to purify the feces and domestic sewage at the "source" of the countryside to meet the standard. Although the water discharged from the septic tank has killed insect eggs and disease-treating bacteria, insect eggs The dead body is still in the water, and there are still a lot of undecomposed organic matter in the water. The quality of the discharged water does not meet the relevant national standards. When the water discharged from the septic tank is exposed to the air, it will slowly become smelly again and breed mosquitoes. Seriously pollute the ecological environment near the septic tank; at present, the integrated sewage purification tank...

AI Technical Summary

Problems solved by technology

[0002] With the implementation of China's rural toilet revolution and rural revitalization plan, it is required to purify the feces and domestic sewage at the "source" of the countryside to meet the standard. Although the water discharged from the septic tank has killed insect eggs and disease-treating bacteria, insect eggs The dead body is still in the water, and there are still a lot of undecomposed organic matter in the water. The quality of the discharged water does not meet the relevant national standards. When the water discharged from the septic tank is exposed to the air, it will slowly become smelly again and breed mosquitoes. Seriously pollute the ecological environment near the septic tank; at present, the integrated sewage purification tank of the farmer's family that has now been disclosed adopts the conventional biochemical treatment process to treat sewage; In "Technology", it is disclosed that the complex process route of sedimentation, filtration, aerobic, anaerobic, sedimentation and clarification is used alternately for many times, and the operation is difficult to control. Difficult, and the equipment occupies a large area, and it is not suitable for the purification of sewage to meet the standard treatment behind the narrow farmer's house; in CN108862580A "A Kind of Plug-in Type Domestic Sewage Purification Tank Ecological Treatment Device and Technology" and CN208454747U "A Kind of Purification Tank" In it, it is disclosed to treat sewage by conventional filtration, anaerobic, aerobic and disinfected processes in clear water tanks. Since the sewage treatment equipment in rural households is limited by the equipment price and the narrow environment area, the equipment should be low in price and occupy an area. Small area, automatic operation of sewage purification standard treatment technology and equipment; the use of conventional anaerobic biochemical reaction-based sewage purification treatment process, the sewage treatment time is long, the sewage treatment capacity per unit volume of the equipment is small, not suitable for the area behind the farmer's house Sewage treatment equipment is arranged in a narrow environment; in particular, the aerobic tank continuously receives sewage containing high concentrations of COD and BOD organic matter from the anaerobic tank, which increases and dilutes the concentration of COD and BOD in the water quality of the aerobic tank, resulting in a good The concentration of COD and BOD in the water discharged from the oxygen tank to the clear water tank cannot be reduced to the high-quality water discharge standard stipulated by the state; this is the defect of the current rural household sewage treatment equipment;

[0003] By searching and consulting a large number of reports, magazines, books, CDs, patent documents, market advertisements... and other materials at home and abroad, no relevant information about "a modified purification tank for multi-stage aerobic treatment of rural household sewage" has been found at home and abroad. report;

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