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Integrated method for collaborative treatment of sludge and algal mud

A technology of synergistic treatment and integrated method, applied in sludge treatment, water/sludge/sewage treatment, dehydration/drying/concentrated sludge treatment, etc., can solve the difficulty of dehydration of skeleton agent alone and the low calorific value of sludge incineration , lack of algae mud and other problems, to achieve the effect of reducing time consumption, reducing drying costs, and reducing dehydration costs

Inactive Publication Date: 2019-10-18
WUXI GUOLIAN ENVIRONMENTAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides an integrated method for synergistic treatment of sludge and algae sludge, which can simultaneously solve the technical problems of the difficulty in dehydration alone due to the lack of a skeleton agent in the algae sludge and the low calorific value of sludge incineration alone, so that the disposal of algae sludge can be Realize industrial application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] An integrated method for synergistic treatment of sludge and algae mud, comprising the following steps:

[0017] Step 1. Mixing. Put the sludge with a moisture content of 85% from Wuxi Zhongfa Water and the cyanobacteria with a moisture content of 90% from Taihu Lake into the mud pool for mixing according to the ratio of 1:1 dry weight;

[0018] Step 2, dilute, add water to the mud pool, and dilute the mixture of sludge and algae mud, and the water content after dilution is 96%;

[0019] Step 3, Conditioning, transport the mixed solution diluted in step 2 to the conditioning tank for conditioning, add coagulant and flocculant, the coagulant is polyaluminum sulfate, calcium oxide, the flocculant is polyacrylamide, polyaluminum sulfate is added The amount is 4% of the absolute dry weight of sludge and algal mud, the amount of calcium oxide added is 15% of the absolute dry weight of sludge and algal mud, and the amount of polyacrylamide added is 0.05% of the absolute dry w...

Embodiment 2

[0024] An integrated method for synergistic treatment of sludge and algae mud, comprising the following steps:

[0025] Step 1. Mixing, put the sludge with a water content of 81% from the Wuxi Taihu National Tourism Resort Sewage Treatment Plant and the cyanobacteria mud with a water content of 85% from Taihu Lake into the mud opening tank at a ratio of 1:2 on a dry basis. mix;

[0026] Step 2, dilute, add water to the mud pool, and dilute the mixture of sludge and algae mud, and the water content after dilution is 97%;

[0027] Step 3, Conditioning, transport the mixed solution diluted in step 2 to the conditioning tank for conditioning, add coagulant and flocculant, the coagulant is polyaluminum sulfate, calcium oxide, the flocculant is polyacrylamide, polyaluminum sulfate is added The amount is 5% of the absolute dry weight of sludge and algal mud, the amount of calcium oxide added is 13% of the absolute dry weight of sludge and algal mud, and the amount of polyacrylamide ...

Embodiment 3

[0032] Step 1, mixing, put the sludge with a moisture content of 83% from Qianzhou Sewage Treatment Plant and the blue-green algae mud with a moisture content of 87% from Taihu Lake in the ratio of dry weight 1:3 into the open mud tank for mixing;

[0033] Step 2, dilute, add water to the mud pool, and dilute the mixture of sludge and algae mud, and the water content after dilution is 97%;

[0034] Step 3, Conditioning, transport the mixed solution diluted in step 2 to the conditioning tank for conditioning, add coagulant and flocculant, the coagulant is polyaluminum sulfate, calcium oxide, the flocculant is polyacrylamide, polyaluminum sulfate is added The amount is 5% of the absolute dry weight of sludge and algal mud, the amount of calcium oxide added is 20% of the absolute dry weight of sludge and algal mud, and the amount of polyacrylamide added is 0.1% of the absolute dry weight of sludge and algal mud;

[0035] Step 4, dehydration, convey the mixed liquid conditioned in...

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Abstract

The invention discloses an integrated method for collaborative treatment of sludge and algal mud. According to the integrated method, the technical problems ofalgal mud lacking of skeleton agents difficult dehydration alone and the low calorific value of sludge incineration alone can be simultaneously solved, and so that algal mud and sludge disposal can realize industrial application. The integrated method for collaborative treatment of the sludge and the algal mud comprises the following steps of dilution, conditioning, dehydration, drying and incineration,is characterized in that mixing stepsare arranged before dilution steps, and the mixing steps comprise the sludge and the algae mud are mixed according to the ratio of 1:1-1:3of absolute dry capacity.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to an integrated method for synergistic treatment of sludge and algae mud. Background technique [0002] The cyanobacteria event in Taihu Lake in 2007 is still fresh in people's memory. The large-scale outbreak of cyanobacteria seriously threatens the safety of drinking water in cities. How to scientifically and effectively control cyanobacteria is a difficult problem that the government and all walks of life have been working hard to solve. The salvaged blue-green algae can greatly alleviate the eutrophication pressure of the fresh water body. The salvaged blue-green algae are dehydrated and then form algae mud. The algae mud has a high moisture content, is viscous, and is easy to rot and smell. [0003] The recycling method of algae mud mainly adopts composting, but on the one hand, algae mud contains algae toxins, which poses a safety hazard; The output speed of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/148C02F11/122C02F11/12F23G7/00C02F11/147C02F11/145C02F11/143
CPCC02F11/12C02F11/122C02F11/143C02F11/145C02F11/147C02F11/148F23G7/001F23G2209/12
Inventor 杨叙军杨汉文李冲王瑞陈安怡徐新伟浦田
Owner WUXI GUOLIAN ENVIRONMENTAL SCI & TECH
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