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Intensified deep concentration system for high-salt-content industrial wastewater and technology thereof

A technology with high salt content in industrial wastewater, applied in the field of water treatment, can solve the problems of inability to utilize resources, low water recovery rate, high operating cost, etc., and achieve strong economic practicability, low operating cost, and reduce potential safety hazards.

Inactive Publication Date: 2016-05-11
INNER MONGOLIA JIUKE KANGRUI ENVIRONMENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many treatment methods for high-salt industrial wastewater at home and abroad, but they all have the defects of high operating cost, low water recovery rate, mostly mixed salt crystallization salt, low quality, and incapable of resource utilization.

Method used

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  • Intensified deep concentration system for high-salt-content industrial wastewater and technology thereof

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Embodiment Construction

[0032] In conjunction with the accompanying drawings, a full-process treatment system and process of high-salt industrial wastewater with zero discharge of salt and its process are further described in detail. The scope of protection of the present invention is not limited to the following embodiments.

[0033] The average concentration of each pollutant in high-salt industrial wastewater is: COD is 100mg / L, total hardness (calculated as CaCO 3 Calculated) is 1000mg / L, total alkalinity (as CaCO 3 ) is 200mg / L, silicon dioxide is 50mg / L, total dissolved solids (TDS) is 10000mg / L, among them, the concentration of chloride ion is 1800mg / L, and the concentration of sulfate ion is 2900mg / L.

[0034] like figure 1 As shown, a kind of intensive deep concentration system of industrial wastewater with high salt content in the present invention comprises: regulating tank 1, softening sedimentation tank 2, V-type filter tank 3, V-type filter tank water production tank 4, ultrafiltration...

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Abstract

The invention discloses an intensified deep concentration system for high-salt-content industrial wastewater and a technology thereof and belongs to the field of water treatment. The high-salt-content industrial wastewater is adjusted through an adjusting tank, settled through a softening settling pond, filtered through a V-type filter tank, filtered through an ultrafiltration device in an intensified mode and concentrated through a first-stage reverse osmosis device, then the hardness is removed through an ion exchange resin device, and salt separation is performed through a nanofiltration device; thick water of the nanofiltration device is concentrated through a frequent electrode transfer electrodialysis device, produced water is oxidized through an advanced oxidization device and then enters a general produced water tank, and thick water is crystallized through a freezing crystallization system and crystallized with sodium sulfate; produced water of the nanofiltration device is concentrated through a second-stage reverse osmosis device and concentrated again through the frequent electrode transfer electrodialysis device, produced water is oxidized through the advanced oxidization device and enters the general produced water tank, and thick water is crystallized through an MVR evaporative crystallization device and crystallized with sodium chloride. The intensified deep concentration system has the advantages that potential safety hazards caused by high-pressure operation are effectively reduced; the problem that the COD content is high after thick salt water is highly concentrated is effectively solved, the purity of crystallized salt is improved, and the using value of the crystallized salt is improved; the system is high in automation degree, easy to operate, low in operation pressure, stable in operation, high in purity of the crystallized salt, low in operation cost and the like.

Description

technical field [0001] The invention belongs to the field of water treatment, and relates to a full-process treatment system and a process thereof for high-salt industrial waste water with salt separation and zero discharge. Background technique [0002] The high-salt industrial waste water described in the present invention mainly comes from coal chemical industry, petrochemical industry and other industries. The high-salt industrial wastewater in the coal chemical industry, petrochemical industry and other industries mainly comes from the washing wastewater in the production process, the condensate of the process system, the drainage of chemical water stations, the sewage of circulating water, etc. It is characterized by high salt content, high hardness, complex composition, refractory organic matter, and large fluctuations in water quality. With the adjustment of the national environmental protection policy, the state requires industrial wastewater discharge enterprises ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10
CPCC02F9/00C02F1/001C02F1/04C02F1/22C02F1/42C02F1/441C02F1/442C02F1/444C02F1/4693C02F1/72C02F2201/007C02F2301/08
Inventor 高贵和薛源李战胜王俊辉赛世杰何丽娟刘丹茹刘慧郭默然齐婧党平张娜姚红锐李思序杭天浜
Owner INNER MONGOLIA JIUKE KANGRUI ENVIRONMENTAL TECH
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