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反渗透爆破膜安装方法

发布时间:2020-12-31 06:17:15

『壹』 反渗透膜防爆膜破的原因如何处理

反渗透膜如遇产水端背压将导致膜片脱离、损坏等问题,未防止产水端背压可在内产水侧安容装爆破膜,当产水侧因管路不畅、阀门关闭等原因导致产水端背压升高到爆破膜爆破极限压力时,爆破膜将会破损,只需跟换新的爆破膜即可。

『贰』 哪里有爆破膜 反渗透爆破膜 爆破膜片 反渗透爆破膜的介绍啊

保护RO膜不受“水锤”现象瞬间高压的破坏,一般用在较大的反渗透系统,其承压能力小于膜壳的设计压力,从而在高压时先行破裂,起到保护系统的作用

『叁』 反渗透不用爆破膜的后果

反渗透膜在不使用的时候需要在潮湿环境中保存,并且保证一定的水量,回使得反渗透膜不答发生干裂,常温8-20℃左右,温度过低过高都会损坏膜,4℃以下发生结冰和结构破坏,反渗透膜就不能用了,高温环境中过热,损坏膜活性。

『肆』 污水工程-反渗透翻译(2)

c. RO unit (membrane array)
RO unit is the actuator of the whole desalting system, whose role is to remove soluble salts, colloids, organic compounds, and microorganisms in the water. The unit is equipped with three set ROs, each has 219m3/h net output, more than 75% recovery rate, and more than 97% total desalting rate (within the life-term). RO membrane adopts TML20-370 anti-contamination RO membrane element proced by Japan Toray Company [Length: 40〃; Diameter: 8〃; Membrane area: 370 square feet (34 m2); Single membrane desalting rate: 99.5%]. Each set RO adopts design of two-sections per grade (需要自己核实) and 62 seven-meter-long pressure containers lining in 41:21 matrix, each pressure container is internally equipped with seven membranes, thus each RO set needs 434 membranes and a total of 1736 membranes for 4 sets. The mean membrane flux is 14.7LMH being in accordance with super-filtration water RO design guideline and having large margins.

c. RO cleaning unit
RO pressure is generally operating at 1.3-1.8MPa. After long-term running, RO membrane array may be contaminated by some contaminations uneasy to be washed off, for example, long-term accumulation of trace salt scales and some organic compounds can result in declining of the performance of the membrane moles and higher running pressure, and therefore, RO membrane array must be cleaned with some chemicals to recover its normal desalting function. When super-filtration was used as pretreatment, it should be cleaned every 3 months, and every cleaning lasts about 2-4 hours. The unit is equipped with a set of cleaning equipment including a stainless steel safeguard filter, two cleaning pumps (1 in use & 1 for preparation) and a cleaning agent tank. The cleaning unit is operated automatically.

d. RO washing unit
RO system is equipped with automatic washing unit, which washes the membrane element surface with RO-proced water as supply to avoid contamination sediment on the membrane surface. The unit is equipped with two wash pumps (1 in use & 1 for preparation) and a washing tank.

e. Control instrument
Serials of online measuring instruments are equipped to control and monitor the normal running of RO system, including conctivity instrument, flow meter, pressure meter, sampling apparatus, and high-low voltage protecting switch, etc. RO is operated automatically, whose condensed water discharging flow is fixed according to the steady-flow-valve installed in the pipelines, and the proced water is set with high-pressure proof bursting membrane.

『伍』 反渗透产水阀关闭,打开高压泵,随后爆破膜爆破,关掉高压泵,全部二段膜电导1000多,膜会不会被击穿

化水的问题,明天帮你问问同事

『陆』 反渗透膜元件的背压都是什么原因造成的

产生复反渗制透背压的原因:

产生反渗透背压的原因有两种分加是:设计失误、操作失误。

设计失误:

一般食品反渗透设备膜相关技术手册是有背压极限参数的,假设反渗透膜最高能承受的背压是0.1MPa,也就是约1bar的压力,约等于10米水柱产生的压力。反渗透在停机时,产水管中存在的水势必会对反渗透膜产水侧产生一定的压力,而产水管爬高越高,压力就越大,而如果产水管爬高超过10米,那么产水侧产水生的背压就足够造成膜的损坏了

反渗透设计过程中应该规定8米为产水管的最高爬升高度,并且在产水管上加装止回阀以防止产水管中的水产生压力。有的时候可能会出现止回阀不严或者产水管爬升高度必须做高的情况,在这种情况下,可以采取在产水管止回阀后加装排空管的方法来防止背压的产生。

『柒』 反渗透系统的产水防爆膜经常爆裂,有时候是停一套设备时,另一套爆裂,什么原因

反渗透膜如复遇产水端背制压将导致膜片脱离、损坏等问题,未防止产水端背压可在产水侧安装爆破膜,当产水侧因管路不畅、阀门关闭等原因导致产水端背压升高到爆破膜爆破极限压力时,爆破膜将会破损,如经常出现爆裂,建议检查高压泵的压力和系统管路阀门。

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