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反渗透设备维护的几点建议

一、抵押冲洗反渗透设备

A mortgage flushing, reverse osmosis equipment

要定期对反渗透设备进行行大流量、低压力、低pH值的冲洗有利于剥除附着在膜表面上的污垢,维持膜性能,或当反 渗透设备进水SDI突然升高超过5.5以上时,应进行低压冲洗,待SDI值调至合后再开机。

To regularly on the reverse osmosis equipment for washing high flow, low pressure, low pH value to divest the dirt adhered on the film, maintain membrane performance, or when the reverse osmosis equipment inlet SDI rise suddenly 5.5 above, should be low pressure flush, SDI value to close after the boot.

二、反渗透设备停运保护

Two, reverse osmosis equipment outage protection

由于生产的拨动,反渗透设备部可避免的要经常停运,短期或长期的停用时必须采取保护措施,不适当的处理会导致膜 性能下降且不可恢复。

Due to the production of toggle, reverse osmosis equipment can avoid to often outage, short-term or long-term disabled must take protective measures, improper disposal will lead to decline and film properties can not be restored.

短期保存适用于停运15d以下的系统,可采用每1~3d低压冲洗的方法来保护反渗透设备。实践发现,水温20℃以上时 ,反渗透设备中的水存放3d就会发臭变质,有大量细菌繁殖。

The short-term 15d service applies to preserve the system below, can be used for every 1 ~ 3D low pressure washing method to protect the reverse osmosis equipment. In practice, the above the water temperature is 20 ℃, reverse osmosis equipment in the water storing 3D will odor, a large number of bacteria.

长期停用保护适用于停运15d以上的系统,这时必须用保护液(杀菌剂)充入净水设备反渗透装置进行保护。

The long-term shutdown protection applies to stop the system above 15d, then we must use protective liquid (disinfectant) into the water purification equipment, reverse osmosis equipment protection.

三、反渗透膜化学清洗

Three, the reverse osmosis membrane chemical cleaning

在正常运行条件下,反渗透膜也可能被无机物垢、胶体、微生物、金属氧化物等污染,这些物质沉积在膜表面上会引起 净水设备反渗透装置出力下降或脱盐率下降、压差升高,甚至对膜造成不可恢复的损伤,因此,为了恢复良好的透水和除盐 性能,需要对膜进行化学清洗。

Under normal operating conditions, the reverse osmosis membrane may also be inorganic scaling, colloid, microorganism, metal oxides and other pollution, these substances deposited by water purification equipment, reverse osmosis device output drop or desalination rate decreased, the pressure increase on the membrane surface, even on membrane causing irreversible damage, therefore, in order to restore good waterproof and salt resistance, the need for chemical cleaning of the membrane.

一般为3到12个月清洗一次,每个月不清洗一次说明应该改善预处理系统,调整的运行参数,若果1~3个月清洗一次,则 需要提高设备的运行水平,是否需要改进。

For general cleaning once every 3 to 12 months, every month is not cleaned once that should improve the pretreatment system, operation parameter adjustment, cleaning time if 1~3 months, is to improve the operation level of the equipment, whether it needs to be improved.

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