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Reverse osmosis concentrated water re-concentration technology

A technology for reverse osmosis concentrate and reverse osmosis concentrate, which is applied in water/sewage treatment, water/sewage multi-stage treatment, neutralized water/sewage treatment, etc. It can solve the problems of low energy consumption, achieve high treatment efficiency, The effect of fast adsorption speed and high retention rate

Inactive Publication Date: 2017-08-18
NJTECH ENVIRONMENT TECH CO LTD
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Problems solved by technology

[0002] In recent years, reverse osmosis has played an increasingly important role in the treatment of saline wastewater due to its low energy consumption, no pollution, strong adaptability, and low operating costs. However, the water production rate of reverse osmosis membrane technology is generally only 75%, about 25% of reverse osmosis concentrated water will still be produced, and the problem of the treatment and discharge of the remaining concentrated water is becoming more and more serious. Therefore, it is necessary to treat this part of reverse osmosis concentrated water

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  • Reverse osmosis concentrated water re-concentration technology

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Embodiment Construction

[0023] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0024] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of ill...

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Abstract

A reverse osmosis concentrated water re-concentration technology includes the following steps that organic substances and scale-forming ions like calcium and magnesium in reverse osmosis concentrated water are removed by using a nanofiltration membrane; the product is conveyed into a reverse osmosis system for concentration and separation to obtain reverse osmosis concentrated water; the reverse osmosis concentrated water is pretreated for water quality regulation; the product is conveyed into a reverse osmosis concentrated solution treatment system for further concentration; the product enters a membrane distillation system for treatment. The technology has the advantages of being high in rejection ratio, high in water recycling rate, mature in technology and the like. The low-cost re-concentration technology of the reverse osmosis concentrated water is provided, provides effective technical support for meeting the disposal requirement of high-salinity waste water reverse osmosis concentrated water in the chemical industry, and plays an important role in sustainable development and environmental protection in the chemical industry in China.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a reverse osmosis concentrated water reconcentration process. Background technique [0002] In recent years, reverse osmosis has played an increasingly important role in the treatment of saline wastewater due to its low energy consumption, no pollution, strong adaptability, and low operating costs. However, the water production rate of reverse osmosis membrane technology is generally only 75%, about 25% of reverse osmosis concentrated water will still be produced, and the problem of the treatment and discharge of the remaining concentrated water is becoming more and more prominent. Therefore, it is necessary to treat this part of reverse osmosis concentrated water. Contents of the invention [0003] In order to overcome the above-mentioned shortcomings and deficiencies, the object of the present invention is to provide a reverse osmosis concentrated water recon...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10
CPCC02F9/00C02F1/283C02F1/441C02F1/442C02F1/447C02F1/66
Inventor 陆曦
Owner NJTECH ENVIRONMENT TECH CO LTD
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