Method for processing sludge by using complex microbial agent

A technology of compound microbial inoculum and sludge, which is applied in biological organic part treatment, sewage/sludge fertilizer, application, etc., can solve the problems of high decomposition efficiency of organic matter, long fermentation period, occupying large land, etc., and achieve strong reproduction ability. and adaptability, reduce nutrient loss, and ensure the effect of harmless treatment

Inactive Publication Date: 2013-12-25
福建省绿标生态科技有限公司
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Problems solved by technology

[0003] At present, the sludge composting methods mainly include anaerobic fermentation and aerobic fermentation. Both methods have disadvantages: the organic matter decomposes slowly during anaerobic fermentation, and the fermentation cycle is long, which generally takes several months. The sludge co

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  • Method for processing sludge by using complex microbial agent
  • Method for processing sludge by using complex microbial agent
  • Method for processing sludge by using complex microbial agent

Examples

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Embodiment 1

[0033] Using this method to compost the sludge, by setting the sludge added with the compound microbial agent as the experimental group, and the sludge without adding the compound microbial agent as the control group, to illustrate the role of the compound microbial agent in the fermentation process of the sludge Apply effects. 100t of sludge from a certain sewage treatment plant has a water content of 80%. The auxiliary materials are 30t of wheat bran and 40t of backfill. Composting is carried out according to the steps of the present invention. The method flow chart is shown in figure 1 .

[0034] (1) Sludge, backfill, and auxiliary materials are mixed by a mixer in a certain proportion and then piled into the fermentation tank. The specification of the fermentation tank is length × width × height = 33m × 4.5m × 2m;

[0035] (2) Add compound microbial agent to the mixture, the amount added is 5‰ of the amount of sludge mixture, and at the same time, set no compound microbia...

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Abstract

The invention relates to a method for processing sludge by using a complex microbial agent. The problems of incompatible aerobic and anaerobic fermentation, long composting period and high moisture content in sludge in the sludge composting method at present are solved by adopting the method. The method comprises the following steps: firstly, adding an auxiliary material to adjust the moisture content of the sludge below 60% before composting the sludge; adding the complex microbial agent to fully stir according to a certain ratio and then pouring into a fermentation tank; completely and thoroughly decomposing the sludge after a high-temperature fermentation stage and a medium and low temperature fermentation stage; reducing the moisture content of the sludge below 30%, so as to finish composting. By adopting the method, composting fermentation of the sludge can be smoothly carried out just by a simple turning process without a high-energy consumption condition such as artificial aeration and the like or a strict and complicated anaerobic condition; the method is low in investment, and significant in sludge reduction effect; loss of nutrients in the composting process can be effectively avoided.

Description

technical field [0001] The invention relates to a method for sludge treatment and disposal, in particular to a method for treating sludge with a compound microbial agent. Background technique [0002] With the increasing amount of urban domestic sewage and industrial wastewater treatment, a large amount of excess sludge has become a secondary pollution source, seriously restricting the development of sewage treatment and the improvement of urban environment. At present, physical landfill or incineration is the most common treatment method for sludge, but the landfill leachate will cause secondary pollution and consume a lot of valuable land resources; while incineration consumes a lot of fuel and pollutes the environment. Therefore, the use of sludge for composting and fermentation into organic fertilizers can not only provide sufficient organic fertilizers for urban landscaping, but also enable sludge treatment and disposal to meet the environmental protection requirements ...

Claims

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Application Information

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IPC IPC(8): C05F17/00C05F7/00
CPCY02A40/20Y02W30/40
Inventor 叶宝水林丽云
Owner 福建省绿标生态科技有限公司
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