Processing technology of wastewater produced during desalting water manufacturing in viscose fiber production

A viscose fiber and treatment process technology, applied in the field of waste water treatment process, can solve the problems of inability to treat waste water well, and achieve the effect of low cost, low cost and reasonable design

Inactive Publication Date: 2016-12-07
HMEI THREAD CO LTD OF YINBIN SICHUAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The present invention aims to solve the problem in the prior art that the wastewater produced by the production of desalinated water cannot be well treated, and provides a treatment process for the wastewater produced...

Method used

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  • Processing technology of wastewater produced during desalting water manufacturing in viscose fiber production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A kind of treatment process that produces the waste water that produces desalted water in producing viscose fiber, comprises the following process steps:

[0039] A, recovery of magnesium hydroxide

[0040] Wastewater from the reverse osmosis membrane equipment used to produce desalinated water is discharged into the magnesium hydroxide sedimentation tank, and sodium hydroxide is added to the magnesium hydroxide sedimentation tank to obtain a magnesium hydroxide emulsion, which is separated, washed and separated again , obtain magnesium hydroxide solid product;

[0041] B. Recovery of calcium sulfate

[0042] The mother liquor containing calcium chloride and sodium chloride in the magnesium hydroxide precipitation tank enters the calcium sulfate precipitation tank after filtration, and the sodium sulfate solution in the sodium sulfate dissolution tank enters the calcium sulfate precipitation tank, is stirred and mixed, and then separated, washed and Separate again to ...

Embodiment 2

[0056] A kind of treatment process that produces the waste water that produces desalted water in producing viscose fiber, comprises the following process steps:

[0057] A, recovery of magnesium hydroxide

[0058] Wastewater from the reverse osmosis membrane equipment used to produce desalinated water is discharged into the magnesium hydroxide sedimentation tank, and sodium hydroxide is added to the magnesium hydroxide sedimentation tank to obtain a magnesium hydroxide emulsion, which is separated, washed and separated again , obtain magnesium hydroxide solid product;

[0059] B. Recovery of calcium sulfate

[0060] The mother liquor containing calcium chloride and sodium chloride in the magnesium hydroxide precipitation tank enters the calcium sulfate precipitation tank after filtration, and the sodium sulfate solution in the sodium sulfate dissolution tank enters the calcium sulfate precipitation tank, is stirred and mixed, and then separated, washed and Separate again to ...

Embodiment 3

[0070] A kind of treatment process that produces the waste water that produces desalted water in producing viscose fiber, comprises the following process steps:

[0071] A, recovery of magnesium hydroxide

[0072] Wastewater from the reverse osmosis membrane equipment used to produce desalinated water is discharged into the magnesium hydroxide sedimentation tank, and sodium hydroxide is added to the magnesium hydroxide sedimentation tank to obtain a magnesium hydroxide emulsion, which is separated, washed and separated again , obtain magnesium hydroxide solid product;

[0073] B. Recovery of calcium sulfate

[0074] The mother liquor containing calcium chloride and sodium chloride in the magnesium hydroxide precipitation tank enters the calcium sulfate precipitation tank after filtration, and the sodium sulfate solution in the sodium sulfate dissolution tank enters the calcium sulfate precipitation tank, is stirred and mixed, and then separated, washed and Separate again to ...

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PUM

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Abstract

The invention relates to a processing technology of wastewater produced during desalting water manufacturing in viscose fiber production, and belongs to the technical field of industrial wastewater processing. The technology recycles magnesium hydrate, calcium sulfate and sodium chloride through the connection of devices and the control of the technology, and the problem that in the prior art, wastewater produced during desalting water manufacturing can not be well processed is solved. The technology is simple in related device, easy to operate, low in cost and reasonable in design, wastewater can be more easily, conveniently and efficiently processed at low cost, and magnesium hydrate, calcium sulfate and sodium chloride in wastewater are recycled.

Description

technical field [0001] The invention relates to a wastewater treatment process, more specifically, the invention relates to a wastewater treatment process for producing desalinated water in the production of viscose fibers, which belongs to the technical field of industrial wastewater treatment. Background technique [0002] Desalted water refers to the finished water obtained by using various water treatment processes to remove suspended solids, colloids, and inorganic cations, anions and other impurities in water. Desalinated water does not mean that all the salts in the water have been removed. Due to technical reasons and water production cost considerations, desalinated water is allowed to contain trace impurities according to different uses. The less impurities in the desalinated water, the higher the purity of the water. [0003] In the process of producing desalinated water, reverse osmosis membrane equipment is a commonly used method. However, during the productio...

Claims

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Application Information

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IPC IPC(8): C02F9/04C01D3/04C01F5/22C01F11/46C02F103/30
CPCC02F9/00C01D3/04C01F5/22C01F11/46C02F1/38C02F1/42C02F1/5236C02F1/66C02F2103/30
Inventor 张创张明毅封勇涛
Owner HMEI THREAD CO LTD OF YINBIN SICHUAN
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