Urine and feces separation based environment-friendly latrine pit and feces treatment method

Abstract

The invention discloses a feces treatment device and a urine and feces separation based environment-friendly latrine pit using the same. A urine and feces squatting pan is arranged on a top plate of alatrine pit shell, and a sealing cover plate is arranged on the urine and feces squatting pan, so that odor in the latrine pit is prevented from overflowing; in the feces treatment device, a fermentation tank is arranged for containing raw materials and feces, a stirring device for mixing the feces and the raw materials is arranged in the fermentation tank, a temperature control device and an electric heating device are arranged for adjusting the temperature in the fermentation tank, and a humidity monitoring device is arranged to monitor the moisture of the fermented materials; an inductor and a timing control element for work of a fan are arranged, an inductor and a timing control element for work of a mixing and stirring machine are arranged, and a gas purification tank is arranged totreat the odor; and the environment-friendly latrine pit using the feces treatment device does not need to be washed with water, saves water resources, does not discharge the odor to the environment,and does not have the secondary environmental pollution problem of discharged sewage and sludge.

Description

technical field [0001] The invention relates to an environment-friendly dry toilet which separates urine from feces, in particular to a treatment device and method for biodegrading toilet excreta into organic fertilizers. Background technique [0002] With the implementation of China's rural toilet revolution and rural revitalization plan, it is required to carry out harmless treatment of rural family toilet excrement. Most of the farmers in the north who lack water use dry toilets. The traditional dry toilet excrement is exposed to the air and breeds flies. Mosquitoes, stinking, polluting the environment; currently, the newly improved aqua toilets use urine and feces to separate dry and wet to treat feces separately. Once sawdust, straw powder, ... and other fermentation media cover the stool, the fermentation period is long, and the odor during the fermentation is emitted and seriously pollutes the environment; there have been related reports on the new technology of dry t...

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 carry out harmless treatment of rural family toilet excrement. Most of the farmers in the north who lack water use dry toilets. The traditional dry toilet excrement is exposed to the air and breeds flies. Mosquitoes, stinking, polluting the environment; currently, the newly improved aqua toilets use urine and feces to separate dry and wet to treat feces separately. Once sawdust, straw powder, ... and other fermentation media cover the stool, the fermentation period is long, and the odor during the fermentation is emitted and seriously pollutes the environment; there have been related reports on the new technology of dry toilets, which are published in CN204813659U "A Composting Rural Area In Sanitary Dry Toilet Box, it is disclosed that the feces are separated from urine and feces first, the urine is collected, and then the dry powder or liquid of microorganisms is sprinkled on the stool for natural composting. There is an odor during fermentation that volatilizes and pollutes the environment. Natural composting belongs to The surface of the raw material is in contact with the air, and there is no oxygen supply inside the raw material. Natural composting has a slow fermentation speed, which requires a large volume of the fermentation tank and a large area. To pile up and fill up the fermentation tank, it is often necessary to manually remove the fermentation products in the fermentation tank; in CN108433622A "An Environmentally Friendly Dry Toilet Without Water and Electricity", it is disclosed that the urine and feces are separated from the wet and dry, the urine flows into the urine collector, and the stool enters the Stool collection barrel, sprinkle crushed straw and sawdust on the stool in the stool for natural composting and fermentation, there is an odor during fermentation that volatilizes and pollutes the environment, the fermentation speed is slow, and the volume of the fermentation tank is large, especially for fermentation There is no stirring machine in the barrel, which leads to incomplete fermentation of feces, and the fermentation products are easy to accumulate and fill up the fermentation barrel; in CN100387174C "excrement treatment device, environmental protection toilet using it and excrement treatment method", it is disclosed that urine enters the toilet to ferment The method of biodegradation in the tank, the harmful odor generated in the fermentation of urine and feces has not been harmlessly treated, which seriously pollutes the living environment of the farmhouse. There is no air inlet pipe required for aerobic degradation in the fermentation tank, and only the fermentation tank materials Surface air contact, fermentation materials can not be in contact with sufficient air, it is a natural composting fermentation method with insufficient oxygen supply, resulting in slow degradation of feces and urine, long fermentation time, generally takes a few days to compost Human excrement is converted into organic fertilizer, which increases the unit processing volume and floor area of ​​the fermentation tank; in particular, a stirring device with a helical blade is used, and the helical blade has the objective function of material transportation and movement when rotating. Therefore, When the helical blade on the mixing device rotates, the fermented material in the treatment tank moves from one end of the treatment tank to the other end, and the fermented material (excrement, sawdust and microorganisms) is easily compacted into blocks and boards, and the fermented material Not loose, which greatly affects the biochemical degradation effect of excrement; in particular, according to the principle of biochemical fermentation, the aerobic fermentation water of excrement should be controlled at 50-60% (Wt%), and the urine enters the fermenter to make the fermented material Moisture content higher than 60% (Wt%), reducing the good The biological activity of oxygen microorganisms reduces the biochemical decomposition efficiency of excrement, and needs to increase the excessive moisture of electrothermal evaporation to 50-60% (Wt%), which increases the processing cost of excrement decomposition; in Japanese Patent No. 3160859, Disclosed a kind of environmental protection toilet, as figure 1 As shown in A-1B, human excreta—feces and urine are directly dropped into the processing device 10, and a single screw agitator is used to stir the materials. The torque of the shaft is large, and the agitator is easily damaged. The air inlet pipe required for aerobic degradation is configured, and only the air contact on the surface of the treatment device 10 is used, and the fermented material cannot be in contact with a sufficient amount of air. The degradation rate is slow and the fermentation time is long; this is the defect of the current rural environment-friendly dry toilet or toilet;

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