ro反渗透爆破膜
Ⅰ 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
Ⅱ 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,使得专反渗透膜不发生干裂,常温属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。
Ⅲ 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专产水侧安装爆破膜,当属产水侧因管路不畅、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。
Ⅳ 反渗透爆破膜的作用和工作原理谁知道
爆破膜抄片主要应用于电厂、钢厂、海水淡化等大型的反渗透中,小型一般不使用。
爆破膜的作用主要是:在产水管路侧装,为了防止产生背压,导致反渗透膜的损坏。
在大中型反渗透水处理领域,背压指的是产品水侧的压力大于给水侧的压力的情况。膜口袋的三面是用黏结剂粘接在一起的,如果产品水侧的压力大于给水侧的压力,那么这些粘接线就会破裂而导致膜元件脱盐率的丧失或者明显降低,因此从安全的角度考虑,反渗透系统不能够存在背压。
由于反渗透膜过滤是通过压力驱动的,在正常运行时是不会存在背压的,但是如果系统正常或者故障停机,阀门设置或者开闭不当,那么就有可能存在背压,因此必须妥善处理解决背压的问题.
工作原理:
将一组防爆膜片,安装在压力管道末端,作为人为给定的薄弱环节,当机组突甩负荷、压力管道上膜片安装处的水压力上升并达到整定值时,膜片爆破,泄流减压。如果泄量不够,随着导叶的继续关闭,水压力再次上升,又有其他膜片相继爆破,从而保护整个系统的安全!
Ⅳ 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
Ⅵ 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.
Ⅶ 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产专水侧安装属爆破膜,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。
Ⅷ 什么叫反渗透水处理背压
在反渗透水处理领域,反渗透水处理背压指的是产品水侧的压力大于给水侧回的压力的答情况。
知识点延伸:
1、由于反渗透膜过滤是通过压力驱动的,在正常运行时是不会存在背压的,但是如果系统正常或者故障停机,阀门设置或者开闭不当,那么就有可能存在背压,因此必须妥善处理解决背压的问题。
2、反渗透水处理背压形成的原因,最主要的还是来自产水管路爬高问题。膜供应商建议最大爬高5m以内,超过这个高度有损坏膜芯的危险。背压的产生主要是在系统停机时,产水透析管路的爬高水柱引起的背压。
Ⅸ 反渗透膜元件的背压都是什么原因造成的
产生反渗透背压的原因:
产生反渗透背压的原因有两种分加是:设计失误、操作回失误。答
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。