Composite sludge treatment process

A sludge treatment and sludge technology, applied in the field of composite sludge treatment technology, can solve the problems of large amount of sludge treatment in rivers and lakes, complex construction conditions, poor dehydration effect, etc., to solve pollution transfer, reduce sludge disposal cycle, and reduce stacking time. Effect

Active Publication Date: 2015-02-04
广州珞珈环境技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional mechanical dehydration method has poor dehydration effect, high energy consumption, and low output. The traditional mechanical dehydration method is not suitable for the treatment and disposal projects with large amount of river and lake sludge, com

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A composite sludge treatment process, comprising the steps of:

[0029] a. Impurity removal: use the first screen with an aperture of 10mm to screen the sludge to obtain the sludge that passes through the first screen;

[0030] b. Silt pretreatment: carry out secondary screening to the sludge obtained through step a through the first screen, and screen out the first sludge with a particle diameter of 5-10mm and the second sludge with a particle diameter less than 5mm;

[0031] c. pass the second silt obtained in step b into the conditioning tank, add water twice the volume of the second silt to dilute, then add a curing agent, and make the curing agent and the second silt mix uniformly by aeration treatment, the curing The quality of the agent is 7% of the quality after the drying of the second sludge, and the working pressure of the aeration treatment is 0.8MPa;

[0032] Next, press filter and dehydrate the aerated second sludge to obtain a mud cake;

[0033] The spe...

Embodiment 2

[0038] A composite sludge treatment process, comprising the steps of:

[0039] a. Impurity removal: use the first screen with an aperture of 10mm to screen the sludge to obtain the sludge that passes through the first screen;

[0040] b. Silt pretreatment: carry out secondary screening to the sludge obtained through step a through the first screen, and screen out the first sludge with a particle diameter of 5-10mm and the second sludge with a particle diameter less than 5mm;

[0041] c. pass the second silt obtained in b step into the conditioning tank, add water with 1 times the volume of the second silt to dilute, then add the curing agent, and make the curing agent and the second silt mix uniformly by aeration treatment, the curing The quality of the agent is 6% of the quality after the drying of the second sludge, and the working pressure of the aeration treatment is 0.6MPa;

[0042] Next, press filter and dehydrate the aerated second sludge to obtain a mud cake;

[0043...

Embodiment 3

[0048] A composite sludge treatment process, comprising the steps of:

[0049] a. Impurity removal: use the first screen with an aperture of 10mm to screen the sludge to obtain the sludge that passes through the first screen;

[0050] b. Silt pretreatment: carry out secondary screening to the sludge obtained through step a through the first screen, and screen out the first sludge with a particle diameter of 5-10mm and the second sludge with a particle diameter less than 5mm;

[0051] c. pass the second silt obtained in step b into the conditioning tank, add water 3 times the volume of the second silt to dilute, then add a curing agent, and make the curing agent and the second silt mix uniformly by aeration treatment, the curing The quality of the agent is 8% of the quality after drying the second sludge, and the working pressure of the aeration treatment is 1MPa;

[0052] Next, press filter and dehydrate the aerated second sludge to obtain a mud cake;

[0053] The specific p...

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Abstract

The invention relates to a composite sludge treatment process. The treatment process comprises the following steps: step a, removing impurities; step b, pre-treating the sludge to obtain first sludge and second sludge; step c, uniformly mixing the second sludge obtained in the step b with a solidifying agent by means of aeration treatment, and subsequently press-filtering and dehydrating the second sludge which is subjected to the aeration treatment to obtain a sludge cake; step d, adding a solidifying agent into the first sludge obtained in the step b and uniformly stirring; step e, sending the sludge cake obtained in the step c and the first sludge treated in the step d to a temporary storage yard, and standing for 1-2 days to finish the treatment. The composite sludge treatment process disclosed by the invention has the advantages of high efficiency, low cost and the like.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a composite sludge treatment process. Background technique [0002] With the improvement of the level of science and technology, on the one hand, people's material life has been greatly enriched, but at the same time, it has also brought a lot of living and production waste, which has brought a great impact on the environment. Due to the aggravation of pollution and the destruction of the ecological environment, a large amount of silt has accumulated in the rivers of the city. If it is not cleaned up in time, it will have a serious impact on the safety of the waterway and the ecology. [0003] There are many existing sludge treatment and disposal processes, among which the natural dehydration drying method, vacuum preloading method, geotechnical tube bag method and mechanical dehydration method are mainly used in engineering applications. Their respective principles and ch...

Claims

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Application Information

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IPC IPC(8): C02F11/00C02F11/12
CPCY02W10/37C02F11/00C02F11/008C02F11/122C02F2103/007
Inventor 马翔林健汉闫晓满
Owner 广州珞珈环境技术有限公司
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