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Sludge dewatering agent and use method thereof

A technology of pharmaceuticals and filter aids, applied in water/sludge/sewage treatment, sludge treatment, biological sludge treatment, etc., to achieve the effect of reducing sludge specific resistance, reducing the consumption of auxiliary materials, and reducing the number of times of turning and throwing

Inactive Publication Date: 2017-08-11
北京首创污泥处置技术有限公司
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The method does not involve the improvement of sludge dewatering performance

Method used

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Embodiment

[0023] In 1 ton of sludge with a water content of 96%, add 0.6 kg of calcium peroxide solids, stir for 2 minutes, then add 0.3 kg of diatomite, 0.6 kg of sawdust, and 0.3 kg of waste activated carbon, and stir for 2 minutes after mixing;

[0024] Configure an aqueous solution of polyferric sulfate with a mass concentration of 20%;

[0025] Configure polyacrylamide (PAM) aqueous solution with a mass concentration of 1‰;

[0026] In the above mixed solution, add 1Kg of polyferric sulfate aqueous solution;

[0027] In the above mixed solution, add 2Kg of polyacrylamide (PAM) aqueous solution;

[0028] After fully stirring for 10 minutes, it enters the plate and frame filter press, and the moisture content of the sludge after it comes out can be lower than 70%.

[0029] The filter press process using a plate and frame filter press is as follows: press the filter plate, feed the sludge, press the diaphragm, loosen the filter plate, unload the material, clean the filter plate and ...

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PUM

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Abstract

The invention relates to a sludge dewatering agent which is formed by a filter aid, a flocculant and a superoxide, the specific resistance of sludge can be effectively reduced, the sludge dewatering agent can be taken as an accessory for further aerobic composting treatment of the dewatered sludge, the accessory consumption of the composting stage is reduced, the turning times can be reduced due to high porosity, the composting power consumption is reduced, and the sludge dewatering agent has multiple purposes; substances of lime and the like which influence follow-up resource utilization are not contained; ferric chloride is not contained, corrosion to the steel structure is not produced, the colloid structure of the sludge is changed by the superoxide, and the addition of the filter aid is reduced greatly. The invention further relates to a use method of the sludge dewatering agent, the method comprises the following steps that firstly thickened sludge is heated to 40 DEG C to 50 DEG C, then the superoxide is added, the flocculant and the filter aid are added, the treated sludge is subjected to mechanical filter pressing, and the moisture content is reduced to 70% or below.

Description

technical field [0001] The invention relates to a sludge treatment agent, in particular to a sludge dehydration agent and its application method. Background technique [0002] Since the 1980s, with the rapid development of my country's economy and the development of urbanization, large-scale industrial parks have emerged, and the area of ​​the main urban area has become larger and larger, but the population density has not decreased. With the rapid economic development, a large amount of domestic sewage and industrial sludge are produced. The treatment and reuse of urban sludge requires the construction of a sludge treatment system in the sewage treatment plant to ensure that the subsequent sludge can also be treated in an environmentally friendly manner while realizing sewage treatment. [0003] Sludge is the product of sewage treatment, which is an extremely complex heterogeneous body composed of organic debris, bacterial cells, inorganic particles, colloids, etc. The ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/14C02F11/02C02F11/12C02F11/00C05F7/00C05F17/00
CPCC02F11/00C02F11/02C02F11/122C02F11/14C05F7/005C05F17/10C05F17/20Y02W30/40Y02A40/20
Inventor 梁远陈程郑蕾花文胜李雪怡臧兴华王晓爽张闯
Owner 北京首创污泥处置技术有限公司
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