Nutrient substance in-situ recovery ecological toilet device based on faeces source separation

Abstract

The invention discloses a nutrient substance in-situ recovery ecological toilet device based on faeces source separation. Faeces and urine are respectively collected via a faeces source separation system and a urine source separation system; the faeces, under the action of a vacuum suction system, is conveyed to a composting reactor to undergo microbial conversion, so that harmless and resourcefuldisposal of the faeces is achieved, and high-quality organic fertilizer is finally obtained; the urine is processed via a membrane separation method and a water resource is synchronously recovered, treated water, after undergoing decoloration and disinfection, is applied to faeces flushing and moisture content regulating and control of a faeces compost mixed material; nitrogen and phosphorus nutrient elements are recovered from a concentrated solution via a magnesium ammonium phosphate precipitation method and struvite is produced; and through the application of vacuum suction equipment, under a condition of guaranteeing a toilet clean and sanitary, zero consumption of ecological toilet flushing water is achieved. The device provided by the invention is applicable to distributed densely populated occasions which have a high requirement on using the toilet such as scenic spots, urban streets and the like; and the device is applicable to new or reconstructed and extended toilets.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to an ecological toilet device for in-situ recovery of nutrients based on feces source separation. Background technique [0002] Research data show that human urine contains a large amount of nutrients such as nitrogen and phosphorus. The nitrogen element in the urine just excreted from the human body mainly exists in the form of urea, and its content is 8000-10000mg / L; the phosphorus element mainly exists in the form of polyphosphate It exists in different forms and the content is 700-2000mg / L. Urine is the main source of nutrients such as nitrogen and phosphorus in domestic sewage. In addition, feces are also rich in nitrogen and phosphorus nutrients and organic matter. [0003] At present, most of the public toilets set up in urban streets use tap water to wash the excrement, and then discharge it into the municipal sewage pipe network and transport...

AI Technical Summary

Problems solved by technology

Although water flushing toilets can improve the sanitation level of urban public toilets, this method has caused a lot of waste of water resources and nutrients such as nitrogen and phosphorus. This operation mode is contrary to my country's development concept of building a resource-saving and recycling-oriented society.

[0004] In addition, for scenic areas and development areas far away from the city center, the sewage pipe network system is not perfect, and the pollutant discharge problem of flushing public toilets is difficult to solve. At this stage, the common method is to build storage pools for temporary storage, and then simply Discharge after treatment or pay as waste and hand it over to the corresponding company for overseas disposal

In the process, there are unfavorable factors such as poor sanitary conditions, pollution leakage, harm to the natural environment, and untimely cleaning that may cause safety accidents.

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