亚洲色图无码九九|视频一区中文字幕|www。人人操。|黄片免费在线看的|一卡二卡在线视频|99er在线视频观看|大依人久久情|噜噜影院夜噜噜|69xxav视频|亚洲色图第一页面

CN
Reverse osmosis
Time : 04-08-2016  Traffic:0
Seawater desalination processing technology: refers to the removal of excess salt and mineral water in the process of getting fresh water.
Reverse osmosis is the most widely used method of seawater desalination.Reverse osmosis is that in the water side of the semipermeable membrane applied than osmotic pressure and high external pressure, when the raw water go through a semipermeable membrane, only allowing water through, other substances can not penetrates and is trapped in the membrane surface.
The reverse osmosis process is: raw water, pretreatment system, high pressure water pump, reverse osmosis membrane module, purified water.
The reverse osmosis is widely used because of its wide range and high desalination rate.The water quality is even better than the tap water, which can be used for industry, commerce, residents and ships.

Previous : first page

Next : last page