Environment-friendly septic tank

Abstract

The invention relates to an environment-friendly septic tank. The environment-friendly septic tank is mainly composed of a septic tank, solar power generation equipment, a gas pump and a sludge sedimentation barrel. By adopting the environment-friendly septic tank, the water quality discharged from the septic tank can reach a first-class standard of ''pollutant discharge standards of urban sewagetreatment plant'' (GB 18918-2002), and thus the environment-friendly septic tank has advanced popularization and application significance for up-to-standard treatment of manure pollution of implementing China's rural toilet revolution, and for sewage treatment from the rural "source". The environment-friendly septic tank has reliable operation, mature technology, easy operation and convenient maintenance, and has broad popularization and application prospects.

Description

technical field [0001] The invention relates to an environment-friendly septic tank, which belongs to the field of environment-friendly equipment; Background technique [0002] With the implementation of China's rural toilet revolution and rural revitalization plan, it is required to purify and meet the standard treatment of toilet excrement produced by the "source" in rural areas; at present, China mainly implements three-format septic tanks to treat the excrement of farmer household toilets, that is, toilet excrement The water is first discharged from the water inlet to the first compartment of the three-compartment septic tank. In one compartment, solids with a large specific gravity and parasite eggs and other objects settle down, and the anaerobic bacteria in the pool water are used to start preliminary fermentation and decomposition. The preliminarily decomposed manure flows into the second compartment, while the dung skin floating above and the dung residue deposited ...

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 and meet the standard treatment of toilet excrement produced by the "source" in rural areas; at present, China mainly implements three-format septic tanks to treat the excrement of farmer household toilets, that is, toilet excrement The water is first discharged from the water inlet to the first compartment of the three-compartment septic tank. In one compartment, solids with a large specific gravity and parasite eggs and other objects settle down, and the anaerobic bacteria in the pool water are used to start preliminary fermentation and decomposition. The preliminarily decomposed manure flows into the second compartment, while the dung skin floating above and the dung residue deposited below remain in the first compartment to continue fermentation. In the second compartment, the manure continues to ferment and decompose, and the eggs continue to sink. The pathogens die gradually, and the feces are further harmless, and the thickness of the dung skin and dregs produced is significantly less than that of the first cell; the feces flowing into the third cell are generally decomposed, and the germs and parasite eggs have been basically killed; the third cell The function of the grid is mainly to temporarily store the settled and basically harmless feces; however, although the water discharged from the traditional three-format septic tank has killed the eggs and bacteria, the corpses of the eggs are still in the water, and the water There are still a lot of undecomposed organic matter, and the water quality discharged from the toilet reform does not meet the relevant national standards. When the water discharged from the septic tank is exposed to the air, it will gradually become smelly, breed mosquitoes, and seriously pollute the septic tank The ecological environment near the pool;

[0003] It has been reported that conventional septic tanks are transformed into environment-friendly septic tanks. In the publication number CN109336349A "A New Type of Septic Tanks", the biological filler filtration and anaerobic According to the method for treating feces, the filter filler is easily blocked by solid feces, and it is difficult to maintain the anaerobic discharge of feces after the anaerobic process in the septic tank; the applicant published in CN201910116462. In "A modified septic tank for the standard treatment of water or / and domestic wastewater purification" and CN201910116461.8 "A modified septic tank for the standard treatment of rural toilet manure and domestic wastewater", first use a double-urn septic tank or Other multi-compartment septic tanks filter toilet manure and perform preliminary anaerobic pretreatment, and then introduce the pretreated manure into three-format or multi-format septic tanks equipped with "anaerobic-facultative-aerobic" Carry out post-standard treatment; the above-mentioned technical equipment has long process flow, large equipment investment, complicated operation, and large equipment footprint, especially the power required for aerobic aeration needs to be connected to the national grid of farmers’ families, which greatly increases The economic burden of electricity consumption on farmers has affected their enthusiasm for toilet reform;

[0004] At present, my country's rural household toilet reform mainly adopts three-format glass fiber reinforced plastic septic tanks or three-format plastic septic tanks with a volume of 1 cubic meter, 1.5 cubic meters or 2 cubic meters. The capacity of the septic tank is selected according to the number of families. The pool has the advantages of low price, convenient construction, and small footprint; from 2015 to now, the three-format septic tank is being widely used nationwide, but there is a defect that the discharged water quality is not up to standard;

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