Human and animal excreta treatment system and method

Abstract

The invention relates to a human and animal excreta treatment system, which comprises an excreta collection system provided with an excreta collection unit and a urine collection unit; an excrement treatment system provided with an excrement dry distillation treatment unit or an excrement hydrothermal synthesis treatment unit, and used for treating the excrement collected by the excrement collection unit to prepare biochar; and an urine treatment system provided with a urine pretreatment unit, an artificial wetland unit and a wetland plant dry distillation treatment unit, wherein the urine pretreatment unit is used for treating urine mixed liquid collected by the urine collection unit to obtain struvite crystals, the artificial wetland unit is used for purifying redundant tail water treated by the urine pretreatment unit and treating the purified tail water, and the wetland plant dry distillation unit is used for preparing charcoal from the wetland plants after tail water treatment and treating human and animal excreta of excrement and urine at the same time. The invention further relates to a human excrement treatment method and a livestock excrement treatment method.

Description

technical field [0001] The invention relates to the field of environmental engineering, in particular to a treatment system and method for human and animal excrement. Background technique [0002] At present, most domestic sewage in my country adopts traditional treatment methods, that is, sewage is collected through pipelines and transported to sewage treatment plants for unified treatment. [0003] Human feces and urine in my country adopt traditional treatment methods, most of which are flush toilets. Urine and feces are mixed without source separation, and then transported to sewage treatment plants through pipelines for treatment. This treatment method has the following defects: ①The construction cost of sewage treatment process facilities and sewage pipe network is high; ②The sewage often needs to consume power during the transportation process, which increases the operating cost; Pollution; ④Centralized treatment means reclaimed water must be re-constructed or transp...

AI Technical Summary

Problems solved by technology

This treatment method has the following defects: ①The construction cost of sewage treatment process facilities and sewage pipe network is high; ②The sewage often needs to consume power during the transportation process, which increases the operating cost; Pollution; ④Centralized treatment makes it necessary to rebuild the pipeline network or transport the reclaimed water, which increases the cost of reuse

But no matter which one of the above-mentioned modes is used, carbon dioxide and other greenhouse gases will be produced during the treatment process. The final result of the treatment process is that the carbon increase fails to meet the carbon negative emission standard, while making manure into biochar can achieve carbon negative expected effect; the publication number is the patent of CN109354515A, although considering the use of biochar mixed with human and animal manure, and preparing it into organic fertilizer for use, there are still emissions of carbon dioxide and other greenhouse gases during the treatment process; the treatment process also Recycling of urine is not considered

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