Integrated-membrane seawater desalination and strong brine comprehensive utilization system

A technology of concentrated brine and full-membrane method, which is applied in seawater treatment, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of high energy consumption and restriction of the use of concentrated brine, and protect the environment , Occupy a small area and reduce energy consumption

Inactive Publication Date: 2017-06-06
恩那社工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current concentration process of brine needs to consume a lot of energy, which seriously restricts the utilization of brine

Method used

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  • Integrated-membrane seawater desalination and strong brine comprehensive utilization system
  • Integrated-membrane seawater desalination and strong brine comprehensive utilization system
  • Integrated-membrane seawater desalination and strong brine comprehensive utilization system

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Embodiment Construction

[0028] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] Such as Figure 1~3 As shown, a full-membrane seawater desalination and concentrated brine comprehensive utilization system includes a seawater desalination device and a concentration device connected by pipelines;

[0030] The seawater desalination device includes a reverse osmosis pretreatment device, a first-stage reverse osmosis device and a desalination pool connected by pipelines; the desalination water tank is connected with the filtered water outlet of the first-stage reverse osmosis device; the first-stage The water outlet of the concentrated brine of the reverse osmosis device is connected with the concentration device;

[0031] The concentrating device includes a primary nanofiltration device, a secondary nanofiltration device and an MVR crystallizer (Mechanical VaporRecompression Crystallizer); t...

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Abstract

The invention discloses an integrated-membrane seawater desalination and strong brine comprehensive utilization system comprising a seawater desalination device and a concentration device which are connected through a pipeline; the seawater desalination device comprises a reverse osmosis pretreatment device, a primary reverse osmosis device and a desalination water tank which are connected through pipelines; the concentration device comprises a primary nanofiltration device, a secondary nanofiltration device and an MVR crystallizer; a water outlet of strong brine of the primary reverse osmosis device is connected with a water inlet of the primary nanofiltration device; a water outlet of concentrated water of the primary nanofiltration device is connected with a water inlet of the MVR crystallizer; a water outlet of filtered water of the primary nanofiltration device is connected with a water inlet of the secondary nanofiltration device; a water outlet of filtered water of the secondary nanofiltration device is connected with a water inlet of the primary reverse osmosis device; a water outlet of concentrated water of the secondary nanofiltration device is connected with the water inlet of the MVR crystallizer. The system can realize zero discharge and extraction of chemical products, synthetically applies energy consumption during filtration, and reduces the comprehensive operation cost.

Description

technical field [0001] The invention relates to the field of seawater desalination, in particular to a full-membrane seawater desalination and concentrated brine comprehensive utilization system. Background technique [0002] In recent years, my country's seawater desalination industry has developed rapidly, which has alleviated the growing shortage of water resources in some areas of my country to a certain extent. However, with the continuous development of the seawater desalination industry, more and more people pay more and more attention to the problem of desalination by-product concentrated brine discharge. At present, most of the desalinated concentrated brine is directly discharged into the ocean, because the salt content of concentrated brine is 1 higher than that of seawater. ~3 times, direct discharge into the sea will cause great pollution to the ocean and cause certain damage to the local marine ecology. The use of salt pans to make salt in the sun also restric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C01D3/06C02F103/08
Inventor 余丽雅陈应进
Owner 恩那社工程有限公司
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