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Energy-saving and environment-friendly method for treating sewage digested sludge

A technology for digesting sludge, energy saving and environmental protection, applied in sludge treatment, biological sludge treatment, etc., can solve problems such as undiscovered, and achieve the effect of solving secondary environmental pollution, continuous instant treatment and utilization conditions

Active Publication Date: 2015-04-22
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

[0033]The energy-saving and environment-friendly method for treating sewage digested sludge of the present invention is as follows: the sewage digested 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 into water The sludge fermentation material with a content of 66% 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 belt conveyor with a width of 4m. Oxygen fermentation for 12 days, converted into decomposed 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 thickness of the material layer laid on the belt conveyor belt by the sludge fermentation materials is 350mm. Its processing steps are as follows:

[0034] (1...

Embodiment 2

[0039] The method for energy-saving and environment-friendly treatment of sewage sludge of the present invention is: be that 75% by weight, the water content of 80% of sewage digestion sludge, 10% by weight, bagasse with water content of 10% and the weight ratio of 15% rice bran with a moisture content of 10% is blended 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 inoculation; The material layer thic...

Embodiment 3

[0045] The method for energy-saving and environment-friendly treatment of sewage digested sludge of the present invention is: the sewage digested sludge that is 80% by weight and the moisture content is 80%, the bagasse that is 10% by weight and the moisture content is 10% and the bagasse that is 10% by weight %, wheat bran with a moisture content of 10% is blended into a sludge fermentation material with a moisture content of 66%, and then placed in 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 for 12 days on the dynamic three-dimensional fermentation equipment formed by the machine, 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 The thickne...

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Abstract

The invention provides an energy-saving and environment-friendly method for treating sewage digested sludge. The method comprises the steps of blending the sewage digested sludge, of which the moisture content is 70-85%, with adjusting materials of a certain weight ratio, so as to form a sludge fermentation material, then, putting the sludge fermentation material on three-dimensional fermentation equipment, of which the vertical direction comprises 2-40 layers and the horizontal direction comprises 2-40 belt conveyors, carrying out dynamic aerobic fermentation, carrying out biological dehydration drying until well-composted dry materials, of which the moisture content is lower than 50%, are obtained, and then, carrying out further environment-friendly treatment or resource utilization. The method provided by the invention is simple and is small in floor area and good in fermentation effect, meanwhile, secondary pollution resulting from bad smell can be avoided, and the aims of high efficiency and environment-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 sewage digested sludge, and in particular relates to an energy-saving and environment-friendly method for treating sewage digested 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 sewage digested sludge with a moisture content of about 80% per year. In addition to the digested sludge produced by industrial enterprises such as papermaking, alcohol, and starch, the annual sewage digested sludge discharged in the country is at least more than 100 million tons. With the further acceleration of my country's urbanization process and the improvement of environmental quality standards, the treatment rate and degree of urban industrial and domestic sewa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/02
CPCC02F11/02Y02W10/20
Inventor 邓秀泉
Owner GUANGXI LIYUANBAO SCI & TECH
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