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Harmless processing method of night soil

A technology for harmless treatment of feces, applied in chemical instruments and methods, sludge treatment, water/sewage multi-stage treatment, etc., can solve problems such as incomplete nitriding treatment, inconvenient rational use of feces, and low COD removal efficiency , to achieve the effect of high denitrification treatment efficiency and full utilization

Active Publication Date: 2014-03-05
浙江省环境工程有限公司
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Problems solved by technology

[0007] The first purpose of the present invention is to provide a kind of feces harmless treatment method that can fully utilize the organic matter in the feces, carry out nitriding treatment thoroughly, and have high COD removal efficiency, which solves the problem of existing feces harmless treatment. The organic matter in the method has not been fully recycled, the nitriding treatment is not complete, and the COD removal efficiency is low.
[0008] The second object of the present invention aims to further solve the problem that the existing fecal harmless treatment method is not convenient for the rational utilization of feces on the basis of the first object

Method used

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  • Harmless processing method of night soil

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0036] see figure 1 , transport the feces in the public toilets and septic tanks to the feces disposal center through the canned excrement truck 1. The feces are unloaded to the solid-liquid separator 2 in a closed docking manner. Unloading in a sealed butt joint can avoid air pollution caused by odor during the unloading of feces.

[0037] The main structure of the solid-liquid separator 2 is the structure of an existing integrated solid-liquid separator. However, the solid-liquid separator is changed from the original primary filtration separation to the following method for solid-liquid separation: a stone removal device is added at the front end of the solid-liquid separator to remove solids above 20mm in the feces; The sand and slag removal device removes the solid matter with a particle size of 6mm or more in the fecal debris; a fine drum grill w...

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Abstract

The invention relates to a processing method of night soil, and concretely relates to a harmless processing method of night soil. The harmless processing method of night soil sequentially comprises the following steps: solid-liquid separation of the night soil, centrifuge dewatering, anaerobic digestion, free ammonia removal, COD, BOD and ammonia nitrogen degradation, mud-water separation, and disinfection discharge. The harmless processing method of night soil has the advantages of full utilization of organic matters in the night soil, thorough nitridation, and high COD removal efficiency, and solves the problems comprising inadequate recovery utilization of the organic matters in the night soil, halfway nitridation and low COD removal efficiency of present harmless processing methods of night soil.

Description

technical field [0001] The invention relates to a feces treatment method, in particular to a method for harmless treatment of feces. Background technique [0002] The increase and high concentration of the population make the output of urban manure continuously increase. In the past, most of these manures were directly transported to the countryside as fertilizers. However, under the impact of chemical fertilizers that can bring significant economic benefits, the use of manure in rural areas is shrinking day by day. Therefore, it is of great significance not only to protect the environment, but also to ensure the health of the people to manage and dispose of feces with appropriate technology. [0003] Fecal wastewater mainly contains high suspended solids (SS), ammonia nitrogen (NH 3 -N) high concentration, high organic matter (COD) concentration, poor sensory, good biodegradability, etc. At present, the main treatment technologies for fecal wastewater are: anaerobic f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F11/00
Inventor 徐斌俞华勇梅竹松
Owner 浙江省环境工程有限公司
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