Process for treating dyeing sludge through high-pressure membrane separation

A technology for separation and treatment of printing and dyeing sludge, applied in dehydration/drying/thickening sludge treatment, combustion methods, lighting and heating equipment, etc., to achieve the effects of reducing landfill burden, reducing emissions, and low energy consumption

Inactive Publication Date: 2014-04-09
HUAFANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This includes two meanings. First, at present, the sludge generated by sewage treatment plants and some industrial enterprises is simply landfilled. The disadvantage of landfill treatment is that the land is seriously encroached and the site is not It is easy to solve; second, if the anti-seepage technology is not enough, it will lead to potential soil and groundwater pollution. In the long run, for the big environment, it is equivalent to the sewage not being treated effectively
[0011] (2) caused great pollution to the environment of the landfill;
[0012] (3) The moisture content of the sludge is too high, causing great difficulties to the landfill operation;
[0013](4) Seriously affecting the collection and treatment system of landfill leachate;
[0014] (5) The rheology of sludge makes the landfill easy to deform and landslide, which brings great safety hazards to the landfill
[0034]This treatment technology occupies a small area and has high treatment and utilization efficiency, but the treatment cost is relatively high. To reduce operating costs, heat sources such as nearby thermal power plants or cement plants are required. And the investment is large, and the requirements for production safety are high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A process for treating printing and dyeing sludge through high-pressure membrane separation, said process comprising the following steps:

[0055] At normal temperature, the sludge is poured into the chamber of the dehydration device from the mud inlet through the high-pressure pump, and is filled through the feed hole of the filter plate, and the filter plate is connected with the inner wall of the chamber to form at least two variable spaces. The cavity, and the console starts the hydraulic pressure to push the piston installed on the side of the filter plate to move, the piston pushes the filter plate to compress the first cavity close to the piston, so that the space of the first cavity becomes smaller to generate high pressure, and then passes through the filter plate The upper layer of membrane filtration device compresses the water in the sludge through high-pressure extrusion, and the compressed water enters the outlet hole through the filter plate for drainage; ...

Embodiment 2

[0063] A process for treating printing and dyeing sludge through high-pressure membrane separation, said process comprising the following steps:

[0064] At normal temperature, the sludge is poured into the chamber of the dehydration device from the mud inlet through the high-pressure pump, and is filled through the feed hole of the filter plate, and the filter plate is connected with the inner wall of the chamber to form at least two variable spaces. The cavity, and the console starts the hydraulic pressure to push the piston installed on the side of the filter plate to move, the piston pushes the filter plate to compress the first cavity close to the piston, so that the space of the first cavity becomes smaller to generate high pressure, and then passes through the filter plate The upper layer of membrane filtration device compresses the water in the sludge through high-pressure extrusion, and the compressed water enters the outlet hole through the filter plate for drainage; ...

Embodiment 3

[0070] A process for treating printing and dyeing sludge through high-pressure membrane separation, said process comprising the following steps:

[0071] At normal temperature, the sludge is poured into the chamber of the dehydration device from the mud inlet through the high-pressure pump, and is filled through the feed hole of the filter plate, and the filter plate is connected with the inner wall of the chamber to form at least two variable spaces. The cavity, and the console starts the hydraulic pressure to push the piston installed on the side of the filter plate to move, the piston pushes the filter plate to compress the first cavity close to the piston, so that the space of the first cavity becomes smaller to generate high pressure, and then passes through the filter plate The upper layer of membrane filtration device compresses the water in the sludge through high-pressure extrusion, and the compressed water enters the outlet hole through the filter plate for drainage; ...

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PUM

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Abstract

The invention belongs to the technical field of sludge treatment, and specifically relates to a process for treating dyeing sludge through high-pressure membrane separation. The process provided by the invention comprises the following steps that the sludge is poured into a dehydrating device through a high-pressure pump, the sludge is fully filled in the dehydrating device through the feeding holes of a filter plate so that a piston on the side surface of the filter plate moves and then the filter plate pushes the filter plate to be compressed close to the first chamber of the piston, and in this way, the space of the first chamber is narrowed to generate high pressure, and water in the sludge is compressed through squeezing under the high pressure by virtue of a membrane filter device on the filter plate, and the water compressed out goes into a water outlet through the filter plate and then is drained; after the sludge is compressed into a mud cake, the adjacent chambers are orderly compressed until the sludge in all the chambers are compressed into the mud cakes; each chamber is opened by pulling the piston by a hydraulic press; a horizontally movable plate is opened through a chamber traveling hydraulic press, and the compression-dried sludge is recovered and evenly mixed with coal for combustion. The process for treating dyeing sludge through high-pressure membrane separation provided by the invention is simple to operate, reliable in operation and convenient to management; the wastewater in the process can be recycled after being treated.

Description

technical field [0001] The invention belongs to the technical field of sludge treatment, and in particular relates to a high-pressure membrane separation process for printing and dyeing sludge. Background technique [0002] With the development of the economy, the contradiction of environmental protection has become increasingly prominent, and an important part of implementing the strategy of sustainable development is to protect the environment, save resources and develop new energy sources. The construction of this project plays an important role in the environmental protection of the company and Binzhou City. This includes two meanings. First, at present, the sludge generated by sewage treatment plants and some industrial enterprises is simply landfilled. The disadvantage of landfill treatment is that the land is seriously encroached and the site is not It is easy to solve; second, if the anti-seepage technology is not enough, it will lead to potential soil and groundwa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/12F23G7/00
Inventor 贾洪斌李风明王绪山周建强李春光孙天天刘涛刘宝图薛建成王涛贾文芹路恩刚
Owner HUAFANG
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