Method for innocent treatment of sludge in sewage plant

Abstract

The invention discloses a method for the innocent treatment of sludge in a sewage plant, which comprises the following treating steps of: (1) piling sludge on the cement-hardened ground into windrows; (2) uniformly spreading conditioner on the windrows, wherein the weight part ratio of the sludge to the conditioner is 600-800:400-200; (3) preparing nutriment, wherein the nutriment comprises the following component in parts by weight: 5-8 parts of starch, 0.5-1 part of sugar and 0.5-1 part of ethanol of which the volume content is 40%; (4) uniformly mixing the nutriment with compound microorganism microbial inoculum according to the weight ratio of 1-2:1-2; (5) directly spreading the mixture of the nutriment and the compound microorganism microbial inoculum in step (4) on the windrows, wherein the weight ratio of the sludge to the mixture is 600-800:1-2; and (6) using an upender to upend and stir the windrows, and thus finishing the overall treatment 10-15 later. The method is simple in treating process, is applicable to large-scale treatment, and has high innocent treatment degree.

Description

technical field [0001] The invention belongs to the technical field of solid waste treatment, and relates to a method for innocuous treatment of sludge, in particular to a method for innocuous treatment of sludge in a sewage plant by adopting a method of microbial high-temperature fermentation. Background technique [0002] In order to solve the problem of water pollution, governments at all levels actively promoted sewage treatment and built a large number of sewage treatment plants, which solved the problem of sewage treatment in general. However, with the increase of urban sewage discharge and the improvement of treatment rate, sludge Production volume increased rapidly. A large amount of accumulated sludge not only occupies land, but also contains not only organic nutrients and trace elements, but also refractory organic matter, pathogenic microorganisms, parasite eggs and heavy metals, which will pollute the ecological environment through different channels. Therefore,...

AI Technical Summary

Problems solved by technology

This method improves the treatment efficiency of sludge, but still has the following problems: 1. need to carry out the construction of infrastructure such as strip treatment tanks, the investment is large, and the treatment capacity of sludge is limited by the scale of the treatment tank; 2. the treatment process is complicated, It involves the secondary transfer of sludge, that is, it is necessary to move the mixed sludge to the treatment tank; ③The water content of the sludge treated by this method is still as high as 35%, which is not convenient for transportation or storage; ④For the treated sludge When it is used as an organic fertilizer, it does not mention whether its key indicators meet the standards, such as the mortality of pathogenic microorganisms and parasite eggs, and the content of heavy metals.

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