Alkaline Recovery Membrane,guochukeji_specification/price/image

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在我国工业生产中，通常会产生大量的酸性或碱性废液，其中含有不同浓度的金属离子和酸碱。直接排放不仅浪费资源，而且对环境造成严重污染。为了保护环境免受污染和回收有用的物质，酸碱废液在排放前需要进行净化处理。国内外对这类废水的处理大多采用中和处理，这种处理方式容易造成二次污染。渗透、反渗透、纳滤、超滤、透析等新型膜技术，可有效避免二次污染。

膜技术作为一种新的分离技术，可以有效净化废水，回收有用物质，具有节能、低耗、无污染、设备简单、操作方便等特点，在pH值方面显示出广阔的前景。的废水处理。

1.酸性环境

经测试的酸性溶液（部分）：

· 20% H ₂ SO ₄

· 20% 盐酸

· 30% H ₃ PO ₄

· 4% HNO ₃

酸性环境中的典型应用：

· 净化酸和去除金属阳离子

· 浸出后酸的回收

· 矿物酸脱色

· 溶解化学品的回收

· 酸溶液中离子的浓缩和回收

· Some conventional applications that need to be used for corrosive strong acid cleaning

· Chemical industry: the recovery of acid and the final product in the process of producing acid medium

· Food, beverage and dairy industry: purify the acid after the use of the CIP process and reuse in the process of production and the cleaning of equipment.

· Recovery of metals from the extractive solution, such as copper, zinc, cobalt, molybdenum, tungsten, uranium, gold, etc..

· Reducing the cost of operation and sewage treatment

· Recovery of high value metals from emission and industrial waste water

· Pre separation of copper and gold in the process of carbon slurry to improve the extraction rate of subsequent gold.

2. Alkaline environment

The tested alkaline solutions include:

· 4% NaOH

· 10% NaOH

· 20% NaOH

· 20% KOH

Typical applications in alkaline environment

· Recovery of alkaline current (sodium hydroxide, potassium hydroxide)

· Recovery of metal in alkaline flow

· Recovery of used electrolyte

· Reducing COD content before neutralizing industrial waste water

· Recovery of alkaline solution for cleaning containers and equipment

· Some conventional applications that need caustic alkali cleaning

· Pulp and artificial fiber: purification of caustic soda from hemicellulose and other organic pollutants to make sodium hydroxide reusable up to 95%

· Food, beverage and dairy products: Purification of waste lye washing flow (CIP) solution and regenerated solution (in Decolorization of sugar) after ion exchange, to make the repeated use rate of sodium hydrate up to 95%;

· 化工：用于许多碱性环境生产操作的碱回收和最终产品浓缩。

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