Electricity-free water purification installation with a membrane filter and a system of automatic backwashing of the filter

摘要

Electricity free operating water purification installation with a membrane filter and a system of automatic backwashing of that filter characterized in that during the operation a fixed percentage is diversed from the outflow of filtered water and is stored in a container under progressive pressure, which to a certain maximum pressure is cut of from a feedback to the membrane filter, so that consequently after filtration of a certain volume of polluted water through the membrane filter the pressure in the container will exceed the maximum resistible pressure by the one way closure, which then will open so that the contents of the container will be forced back through the membrane filter under higher pressure than the original filtration pressure, whereby is provided in automatic closure after the container is emptied.

主权项

1. An electricity-free water treatment plant, comprising:
a membrane filter; and a supply pump configured to be operated physically to extract water to be treated from a water source, and to push the water source with a pressure from a water entrance through the membrane filter to an outlet to produce filtrate, in a filtering process; a rinsing water container, comprising a counter pressure generator; a non-electric secondary pump configured to divert, during the filtering process, a part of the filtrate through a one-way valve into the rinsing water container; and a pressure limiting seal configured to be opened and closed, which seal is not electronically controlled, the seal sealing off the rinsing water container at a certain pressure from a feedback to the membrane filter, wherein the seal is configured to be non-electronically opened by overpressure, to substantially simultaneously interrupt the inflow of filtrate from the membrane filter, to close the drain to the outlet, and to open a drain on the wastewater entrance of the membrane filter, thereby allowing rinsing water from the rinsing water container to be discharged after backwashing through the membrane filter.