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反渗透系列设备
点击数:1028次 添加时间:2019/8/7 [打印] [返回] [收藏]

反渗透(RO)是近年来发展起来的高新膜分离技术,它的孔径很小,是离子级的分离设备,现已广泛应用于水的淡化、除盐、制取纯净的饮用水、高纯水,分离对象是溶液中的离子范围和分子量很小的有机物,是医药、电子、饮料、生物、医学工程、环保等常用的高级设备。
我厂生产的反渗透装置,以进口美国最先进的膜组件为主体,进口高压不锈钢泵,进口控制仪表,高低压管道阀门而成,另配进口计量泵加药和自动清洗设备。产品规格以产量计,从每小时300公斤到数百吨规格齐全可供选用,反渗透对进水水质要求较高,所以前处理设备必须完善,详见使用说明。

1、原理:

RO反渗透技术是一种高科技水处理技术,它依靠反渗透膜在压力下使溶液中的溶剂和溶质分离的特性工作。“渗透”是一种物理现象,逆渗透就是在含有盐及各种细微杂质的水中(即原水)施加比自然渗透更大的压力,使水从浓度高的一方逆渗透到浓度低的一方,而原水中绝大多数的细微杂质、有机物、重金属、细菌、病毒及其它有害物质等都经污水出口排放掉。

2、反渗透纯水设备主要工艺流程说明

原水泵 :恒定系统供水压力,稳定供水量。

多介质过滤器 : 采用多次过滤层的过滤器,主要目的是去除原水中含有的泥沙、铁锈、胶体物质、悬浮物等颗粒在20um以上的物质,可选用手动阀门控制或者全自动控制器进行反冲洗、正冲洗等一系列操作。保证设备的产水质量,延长设备的使用寿命。

活性炭过滤器: 系统采用果壳活性炭过滤器,活性炭不但可吸附电解质离子,还可进行离子交换吸附。经活性炭吸附还可使高锰酸钾耗氧量(COD)由15mg/L(O2)降至2~7mg/L(O2),此外,由于吸附作用使表面被吸附复制的浓度增加,因而还起到催化作用、去除水中的色素、异味、大量生化有机物、降低水的余氯值及农药污染物和除去水中的三卤化物(THM)以及其它的污染物。可选用手动阀门控制或者全自动控制器进行反冲洗、正冲洗等一系列操作。保证设备的产水质量,延长设备的使用寿命。同时,设备具有自我维护系统,运行费用很低。

离子软化系统/加药系统: R/O装置为了溶解固体形物的浓缩排放和淡水的利用,为防止浓水端特别是RO装置最后一根膜组件浓水侧出现CaCO3,MgCO3,MgSO4,CaSO4,BaSO4, SrSO4, SiSO4的浓度积大于其平衡溶解度常数而结晶析出,损坏膜原件的应有特性,在进入反渗透膜组件之前,应使用离子软化装置或投放适量的阻垢剂阻止碳酸盐, SiO2,硫酸盐的晶体析出。

精密过滤器 :采用精密过滤器对进水中残留的悬浮物、非曲直粒物及胶体等物质去除,使RO系统等后续设备运行更安全、更可靠。滤芯为5um熔喷滤芯、目的防止上级过滤单元,漏掉的大于5um的杂质除去。防止进入反渗透装置损坏膜的表面,从而损坏膜的脱盐性能。

反渗透系统: 反渗透装置是用足够的压力使溶液中的溶剂(一般是水)通过反渗透膜(或称半透膜)而分离出来,因为这个过程和自然渗透的方向相反,因此称为反渗透。 反渗透法能适应各类含盐量的原水,尤其是在高含盐量的水处理工程中,能获得很好的技术经济效益。反渗透法的脱盐率提高,回收率高,运行稳定,占地面积小,操作简便,反渗透设备在除盐的同时,也将大部分细菌、胶体及大分子量的有机物去除。

臭氧杀菌器: 杀灭由二次污染产生的细菌彻底保证成品水的卫生指标










Reverse osmosis series equipment

Reverse osmosis (RO) is a high - tech membrane separation technology developed in recent years. Its aperture is small, is the ion - level separation equipment. Now it is widely used in water desalination, desalination, making pure drinking water and high purity water. The separation objects are organic compounds with small ion range and molecular weight in solution. It is a popular advanced equipment for medicine, electronics, beverages, biology, medical engineering, environmental protection, etc.

The main body of the reverse osmosis unit produced by our factory is imported from the United States with the most advanced membrane module, imported high-pressure stainless-steel pump, imported control instrument, high- and low-pressure pipeline valve. It is also equipped with imported metering pump dosing and automatic cleaning equipment. Product specifications are divided by production, from 300 kg to hundreds of tons per hour. Reverse osmosis requires high water quality, so the pretreatment equipment must be perfected. See the instructions for use.

1.Principle:

RO reverse osmosis technology is a high-tech water treatment technology. It relies on the ability of reverse osmosis membrane to separate solvent and solute in solution under pressure. Penetration is a physical phenomenon. Reverse osmosis is the application of a greater pressure than natural osmosis in water containing salt and various fine impurities (raw water) to reverse osmosis from the one with higher concentration to the one with lower concentration. Most of the fine impurities, organics, heavy metals, bacteria, viruses and other harmful substances in raw water are discharged through the sewage outlet.

2. Description of main process flow of reverse osmosis pure water equipment

Raw water pump: Constant system water supply pressure, stable water supply.

Multi-media filter: the filter with multiple filtration layers is mainly used to remove sediment, rust, colloidal substances, suspended substances and other substances with particles above 20um contained in raw water. Manual valve control or automatic controller can be used for backwashing, flushing and a series of operations to ensure the water quality of the equipment and extend the service life of the equipment.

Activated carbon filter: the system adopts fruit-shell activated carbon filter, which can not only adsorb electrolyte ions, but also conduct ion exchange adsorption. Potassium permanganate oxygen consumption (COD) can be reduced from 15mg/L(O2) to 2 ~ 7mg/L(O2) after adsorption by activated carbon. In addition, the adsorption can increase the concentration of surface adsorption and replication, and play a catalytic role in removing pigments, odors, a large number of biochemical organic compounds in the water, reducing the residual chlorine value of the water and pesticide pollutants, and removing trihalides (THM) and other pollutants in the water. Manual valve control or automatic controller can be used for backwashing, flushing and a series of operations. In this way, the water quality of the equipment can be guaranteed and the service life of the equipment can be extended. At the same time, the equipment has a self-maintenance system, running costs are very low.

Ion softening system/dosing system: R/O devices are designed to dissolve solids for concentrated discharge and desalinate water quality. To prevent CaCO3 and MgCO3, MgSO4, CaSO4, BaSO4, SrSO4, SiSO4 concentration is greater than the equilibrium solubility constant deposition and crystallization precipitation in the thick water side especially RO device last membrane module thick water side, and damage the membrane of the original features, Before entering the reverse osmosis membrane assembly, the crystal precipitation of carbonate, SiO2 and sulfate should be prevented by ion softening device or appropriate scale inhibitor.

Precision filter: Precise filter is adopted to remove suspended substance, non-curved particle and colloid and other substances in the water, so that RO system and other subsequent equipment can operate more safely and reliably. The filter element is a 5um melting and spraying filter element, which aims to prevent the removal of impurities larger than 5um missed by the superior filtering unit to prevent impurities from entering the reverse osmosis device to damage the membrane surface, thereby damaging the desalination performance of the membrane.

Reverse osmosis system: A reverse osmosis device is a device that separates a solvent (generally water) in a solution through a reverse osmosis membrane (or semipermeable membrane) with sufficient pressure. Because this process is opposite to the direction of natural infiltration, it is called reverse osmosis. The reverse osmosis method can adapt to all kinds of raw water with salt content, especially in the high-salt water treatment project, it can obtain good technical and economic benefits. Reverse osmosis has the advantages of high desalination rate, high recovery rate, stable operation, small occupation area and simple operation. In addition to salt removal, reverse osmosis equipment also removes most bacteria, colloids and large molecular weight organic compounds.

Ozone sterilizer: Kill the bacteria caused by secondary contamination to ensure the sanitary standard of finished water.




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