[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 rate is higher than 60% (Wt%), has reduced the
biological activity of aerobic
microorganism, has reduced the biochemical
decomposition efficiency of excrement, needs to increase the excessive
moisture of electrothermal
evaporation to 50-60% (Wt%), and this has increased The
processing cost of excrement
decomposition; In Japanese Patent No. 3160859, a kind of
environmental protection toilet is disclosed, as figure 1 As shown in A-1B, human excrement—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;