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Deodorization method for sludge composting fermentation

A sludge and composting technology, applied in the field of fertilizers, can solve problems that affect the survival and development of sludge fertilizers, reduce the commodity value of sludge fertilizers, etc., and achieve the effect of reducing dehydration costs and increasing nutrients

Inactive Publication Date: 2015-04-08
CHANGSHU TIANYUAN ENVIRONMENTAL PROTECTION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will greatly reduce the commodity value of sludge fertilizer, and directly affect the survival and development of sludge fertilizer in the fertilizer market.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A kind of deodorization method of sludge composting fermentation, comprises the following steps:

[0016] (1) One-time deodorization. During the sludge dehydration process, when the sludge is dehydrated to a water content of 60%-65%, spray with a deodorant while dehydrating. The deodorant includes 10 parts of activated carbon, zeolite 18 parts, pomace 10 parts, the rest is water;

[0017] (2) Secondary deodorization. When sludge is mixed and composted, beneficial bacteria are added to the material. The beneficial bacteria include Trichoderma viride, Bacillus subtilis and Aspergillus niger. The Trichoderma viride and Bacillus subtilis The mass part ratio with Aspergillus niger is 2:2:1, and the concentration of the beneficial bacteria agent is 2%-3%, preferably 3%.

[0018] The water content of the sludge after the primary deodorization is 50%-55%.

[0019] The spraying time of the deodorant is 0.5-1 hour.

Embodiment 2

[0021] A kind of deodorization method of sludge composting fermentation, comprises the following steps:

[0022] (1) One-time deodorization. During the sludge dehydration process, when the sludge is dehydrated to a water content of 60%-65%, spray with a deodorant while dehydrating. The deodorant includes 12 parts of activated carbon, zeolite 15 parts, pomace 8 parts, the rest is water;

[0023] (2) Secondary deodorization. When sludge is mixed and composted, beneficial bacteria are added to the material. The beneficial bacteria include Trichoderma viride, Bacillus subtilis and Aspergillus niger. The Trichoderma viride and Bacillus subtilis The mass part ratio with Aspergillus niger is 2:2:1, and the concentration of the beneficial bacteria agent is 2%-3%, preferably 3%.

[0024] The water content of the sludge after the primary deodorization is 50%-55%.

[0025] The spraying time of the deodorant is 0.5-1 hour.

[0026] The invention discloses a deodorization method for slu...

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PUM

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Abstract

The invention discloses a deodorization method for sludge composting fermentation. The method comprises the following steps: (1) performing primary deodorization, and spraying by adopting a deodorization agent while dewatering during sludge dewatering, wherein the deodorization agent comprises 10-15 parts of activated carbon, 15-20 parts of zeolite, 8-10 parts of pomace and the balance of water; and (2) performing secondary deodorization, and adding a beneficial fungicide into the materials while sludge mixing and composting, wherein the effective microbial community comprises trichoderma viride, bacillus subtilis and aspergillus niger, and the mass part ratio of the trichoderma viride to bacillus subtilis to aspergillus niger is 2:2;1. In the mode, the deodorization method disclosed by the invention has the advantages that the deodorization effect can be improved, the sludge dewatering efficiency is improved, the sludge dewatering cost is reduced, and nutritional ingredients in the sludge are increased.

Description

technical field [0001] The invention relates to the field of fertilizers, in particular to a method for deodorizing sludge composting fermentation. Background technique [0002] In recent years, with the improvement of people's awareness of environmental protection, sewage treatment has developed rapidly in our country, but it has brought about another serious environmental protection problem, which is how to properly dispose of the sludge generated after sewage treatment, which has become the whole sewage Deal with the industry's pressing problems. [0003] Treated sludge will be a good resource, but it will cause secondary pollution to the environment if it is spread randomly. At present, the main ways to deal with this kind of sludge are landfill, incineration and composting, but the economic benefits of landfill and incineration are negative, which is not suitable for my country's national conditions. Composting is about adding other auxiliary materials to the sludge, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F17/00C05F5/00C02F11/02C02F11/12
CPCC05F7/00C05F17/10Y02W30/40Y02A40/20
Inventor 王强黄任良夏伟高健浩陆裕陈启东
Owner CHANGSHU TIANYUAN ENVIRONMENTAL PROTECTION SCI & TECH
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