High-salinity wastewater treatment system and process

A high-salt wastewater treatment system technology, applied in the field of electrodialysis, can solve the problems of low water production rate, serious scaling, frequent cleaning and other problems in the system, and achieve the effect of increasing resources, improving comprehensive utilization, and promoting circular economy

Inactive Publication Date: 2020-09-25
XINJIANG ENVIRONMENTAL ENG TECH
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Problems solved by technology

[0005] In view of this, the present invention proposes a high-salt wastewater treatment system and process, aiming to solve the problem of scale formation during system operation due to the increase of hard

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  • High-salinity wastewater treatment system and process

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[0045] In order to further understand the present invention, the preferred embodiments of the present invention are described below in conjunction with the examples, but it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention rather than limiting the patent requirements of the present invention.

[0046]The invention provides a high-salt wastewater treatment system, which includes: a pretreatment unit, a double-membrane treatment unit, a hard removal unit, an electrodialysis desalination unit, and an MVR unit (steam mechanical recompression evaporator); wherein, the pretreatment unit uses It is used for pretreatment of high-salt wastewater to initially remove suspended solids and oil in high-salt wastewater; the double-membrane treatment unit is connected to the pretreatment unit to remove suspended solids in the high-salt wastewater treated by the pretreatment unit , turbidity, colloid, organic matt...

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Abstract

The invention provides a high-salinity wastewater treatment system and process. The system comprises a pretreatment unit, a double-membrane treatment unit, a hardness removal unit, an electrodialysisdesalination unit and an MVR unit, wherein the pretreatment unit is used for preprocessing high-salinity wastewater; the double-membrane treatment unit is connected with the pretreatment unit; the hardness removing unit is connected with the double-membrane treatment unit; the electrodialysis desalination unit is connected with the hardness removal unit; and the MVR unit is connected with the electrodialysis desalination unit and is used for evaporating and compressing the concentrated water generated after the treatment of the electrodialysis desalination unit, so that the salt of the concentrated water is crystallized and separated out. According to the high-salinity wastewater treatment system and process provided by the invention, the water treatment system and process are reasonably and scientifically combined; and the problems that in an existing high-salinity wastewater treatment process, due to the fact that the hardness of water is increased along with step-by-step concentration, scaling is serious in the system operation process, cleaning is frequent, and the water production rate of the whole system is low are effectively solved.

Description

technical field [0001] The invention relates to the technical field of electrodialysis, in particular to a high-salt wastewater treatment system and process. Background technique [0002] Although my country's water treatment technology has matured after years of development, there are still problems in the treatment of high-salt wastewater such as chemical wastewater treatment, the treatment process is relatively simple, the treatment efficiency generally only meets the discharge standard, and the reuse rate is low. China still lacks high-efficiency, low-cost advanced technology and integrated technology and equipment. At the same time, chemical wastewater is mostly high-salt wastewater. Therefore, the development of this field has become a bottleneck in the development of high-salt wastewater treatment technology. In the existing high-salt wastewater treatment process, the hardness of the water increases with the gradual concentration, resulting in serious fouling and fre...

Claims

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Application Information

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IPC IPC(8): C02F9/10C02F101/10C02F101/30
CPCC02F9/00C02F1/001C02F1/66C02F1/24C02F1/444C02F1/441C02F1/4693C02F1/048C02F2101/10C02F2101/30
Inventor 于文浩艾山·玉素莆李红丽单琦
Owner XINJIANG ENVIRONMENTAL ENG TECH
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