Energy-saving and environment-friendly method for treating municipal sludge

An urban sludge, energy saving and environmental protection technology, applied in sludge treatment, chemical instruments and methods, biological and organic part treatment, etc., can solve problems such as undiscovered, and achieve the effect of solving secondary environmental pollution

Active Publication Date: 2015-04-08
GUANGXI LIYUANBAO SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the society has not yet found a method that can meet such requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The method for energy-saving and environment-friendly treatment of urban sludge in the present invention is as follows: urban sludge with a weight ratio of 80% and a moisture content of 80% and cassava distiller's grains with a weight ratio of 20% and a moisture content of 10% are mixed to form a moisture content of 66%. The sludge fermentation material is then placed on a set of dynamic three-dimensional fermentation equipment consisting of 5 groups in the horizontal direction, 12 layers in the vertical direction, and a conveyor belt width of 4m for dynamic aerobic fermentation 12 Days, converted into decomposed and dry chemical materials with a moisture content of 42%, and then directly used as organic fertilizers; during the fermentation process, microorganisms were used to inoculate naturally; the layer thickness of the sludge fermentation materials laid on the belt conveyor belt was 350mm. Its processing steps are as follows:

[0033](1) Put the municipal sludge an...

Embodiment 2

[0038] The method for energy-saving and environment-friendly treatment of municipal sludge of the present invention is as follows: be 75% by weight ratio, the municipal sludge that moisture content is 80%, bagasse that is 10% by weight ratio, 10% moisture content and 15% by weight ratio , cassava starch slag with a moisture content of 10% is mixed into a sludge fermentation material with a moisture content of 62.5%, and then placed in a set of belt conveyors consisting of 10 groups in the horizontal direction, 12 layers in the vertical direction, and a conveyor belt width of 4m. Dynamic aerobic fermentation is carried out for 12 days on the dynamic three-dimensional fermentation equipment formed by the machine, and it is converted into decomposed dry chemical material with a moisture content of 35% and used as an organic raw material for the production and processing of commercial organic fertilizers; during the fermentation process, microorganisms are used for natural inoculati...

Embodiment 3

[0044] The method for energy-saving and environment-friendly treatment of municipal sludge of the present invention is: be that 80% by weight ratio, the municipal sludge that moisture content is 80%, be that 10% by weight ratio, be the bagasse of 10% moisture content and be 10% by weight ratio, The bran with a moisture content of 10% is blended into a sludge fermentation material with a moisture content of 66%, and then placed on a set of belt conveyors consisting of 5 groups in the horizontal direction, 12 layers in the vertical direction, and a conveyor belt width of 3m. Dynamic aerobic fermentation is carried out on the dynamic three-dimensional fermentation equipment formed for 12 days, and it is converted into decomposed dry material with a moisture content of 40% and then used as biomass fuel for incineration; during the fermentation process, microorganisms are used to inoculate naturally; the sludge fermentation material is in the belt type The thickness of the material ...

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Abstract

The invention provides an energy-saving and environment-friendly method for treating municipal sludge. The method comprises the following steps: doping municipal sludge with a water content of 70-85% with a regulation material with a certain weight proportion to form a fermented sludge material, and then placing the fermented sludge material on three-dimensional fermentation equipment for dynamic aerobic fermentation, wherein the three-dimensional fermentation equipment is composed of 2-40 layers in the vertical direction and 2-40 groups of belt conveying mechanisms in the horizontal direction, and a rotten dry material which is dried to a water content lower than 50% by biological dehydration is used in further environmental protection treatment or resource utilization. The method provided by the invention is simple, small in occupation area and good in fermentation effect, meanwhile, secondary pollution caused by bad smell can be avoided, and the purposes of high efficiency and environmental friendliness are achieved.

Description

technical field [0001] The invention belongs to the technical field of energy-saving and environment-friendly treatment and resource utilization of urban sludge, and in particular relates to a method for energy-saving and environment-friendly treatment of urban sludge. Background technique [0002] According to the data released by the relevant government departments, by 2012, the urban sewage treatment plants that have been built and operated in my country will produce about 30 million tons of sludge with a moisture content of about 80% every year. With the further acceleration of my country's urbanization process and the improvement of environmental quality standards, the rate and degree of urban sewage treatment have increased year by year, and the amount of sludge produced will increase sharply. As an inevitable product of the sewage treatment process, the composition of sludge is very complex. It is an aggregate composed of bacterial micelles formed by various microorga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C05F15/00C05F17/00
CPCY02P20/10Y02W30/40
Inventor 邓秀泉
Owner GUANGXI LIYUANBAO SCI & TECH
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