Sludge dewatering solidification treatment method

A solidification treatment and sludge dewatering technology, applied in the direction of dehydration/drying/thickened sludge treatment, etc., can solve the problems that it is difficult to meet the requirements of large-scale dredging projects, occupy a large area of ​​land, and be easily affected by the weather. Convenient and easy to promote the effect of the application

Inactive Publication Date: 2013-06-19
UNIVERSTAR SCI & TECH SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The method of physical drying needs to occupy a large area of ​​land, and is easily affected by the weather, and the treatment efficiency is low, so it is difficult to mee...

Method used

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  • Sludge dewatering solidification treatment method

Examples

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Effect test

Embodiment 1

[0027] The 1000m3 river silt of Tangwang River in Jiamusi was solidified and embanked. It was tested that the water content of the silt consolidated body was less than 22%, and the properties of the solidified soil could meet the requirements of embankment filling soil; When discharged from the water treatment system, the SS value is less than 20mg / l.

Embodiment 2

[0029] The solidification treatment and road filling test were carried out on 1000m3 of Xinglin River sludge in Jiamusi. After testing, the water content of the consolidated sludge obtained from the treatment was less than 28%. The SS value when discharged is less than 20mg / l.

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Abstract

The present invention relates to a sludge treatment technology, and discloses a sludge dewatering solidification treatment method, which comprises the following steps: (1) separating sand and stone; (2) carrying out primary solid-liquid separation; (3) adding a solidification agent; (4) carrying out press filtration; and (5) draining. The sludge dewatering solidification treatment method has advantages of high efficiency, low energy consumption and easy operation and management, wherein the obtained sludge consolidation body has a certain structure and bearing capacity, and can be used as a highway base course filler, greening base soil, a building material and the like so as to achieve a harmless resource treatment of the sludge. In addition, with the treatment technology, sewage produced at the middle stage is subjected to a harmless treatment so as to achieve water resource recycling.

Description

technical field [0001] The invention relates to a sludge treatment technology, in particular to a sludge dehydration and solidification treatment method for dredging sludge with high efficiency, low energy consumption and easy operation and management. Background technique [0002] The silt produced in dredging projects is often piled up or transported to the sea for disposal, which either takes up a lot of land resources or seriously affects the effective use of marine resources. In addition, most of the silt contains heavy metals, organic matter and other pollutants, which will inevitably cause serious and damaging pollution to the soil and marine environment. [0003] At present, the disposal of dredged silt has become a restrictive factor for the development of river management and marine engineering in my country. The impact of dredged silt on the environment has attracted the attention of people from all walks of life and relevant departments. Therefore, the developme...

Claims

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Application Information

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IPC IPC(8): C02F11/14
Inventor 王荣柯友青
Owner UNIVERSTAR SCI & TECH SHENZHEN
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