A water-air mixed reverse osmosis membrane off-line cleaning device

Abstract

The invention provides a water-gas mixed reverse osmosis membrane offline cleaning device, comprising a cleaning water tank, a pneumatic diaphragm pump, a precision filter and a reverse osmosis membrane shell, wherein the water outlet of the cleaning water tank is connected with the inlet of the precision filter through the pneumatic diaphragm pump; a flushing water inlet pipeline is arranged between the outlet of the precision filter and the reverse osmosis membrane shell; a small circulation system is arranged between the water outlet of the pneumatic diaphragm pump and the water inlet of the cleaning water tank; and a gas cleaning device is arranged between the precision filter and the reverse osmosis membrane shell. The water-gas mixed reverse osmosis membrane offline cleaning device provided by the invention is provided with both of the gas cleaning device and the water cleaning pipeline; the single reverse osmosis membrane shell is placed vertically; water and gas distribution and balance can be effectively realized; flushing to the reverse osmosis membrane can be enhanced and dead angle can be avoided. The offline cleaning device provided by the invention has the advantage that the water-gas mixed cleaning way is adopted, the cleaning power to the reverse osmosis membrane is greatly enhanced and the cleaning dead angle is effectively avoided.

Description

technical field [0001] The invention relates to a cleaning device for water treatment equipment, in particular to an off-line cleaning device for a water-gas mixed type reverse osmosis membrane. Background technique [0002] As reverse osmosis technology is more and more used in sewage reuse, seawater desalination, food, chemical and other industries, and its uses are diversified, the situation of reverse osmosis membrane pollution is becoming more and more complicated, and the pollution degree is becoming more and more serious. The traditional reverse osmosis cleaning devices are all online cleaning devices. The membrane modules are placed horizontally during cleaning. It is difficult to clean and restore the reverse osmosis membrane in the cleaning system by relying on water flow alone. The long-term dirt in the reverse osmosis membrane Accumulation can easily cause damage to the reverse osmosis membrane, causing the pressure difference of the membrane element to rise duri...

AI Technical Summary

Problems solved by technology

The traditional reverse osmosis cleaning devices are all online cleaning devices. The membrane modules are placed horizontally during cleaning. It is difficult to clean and restore the reverse osmosis membrane in the cleaning system by relying on water flow alone. The long-term dirt in the reverse osmosis membrane Accumulation can easily cause damage to the reverse osmosis membrane, causing the pressure difference of the membrane element to rise during the working process, the delay rate, the flow rate to drop, and even not to work normally

Images