Backwash

Backwash

  • CN 1,842,364 A
  • Filed: 08/27/2004
  • Published: 10/04/2006
  • Est. Priority Date: 08/29/2003
  • Status: Active Application
First Claim
Patent Images

1. the method for a backwash film filtration module, described module comprises the one or more films that are placed in the container that comprises the son crystalline substance, this film has the permeable wall that stands filtration operation, the sub-crystalline substance that wherein comprises polluter is applied on the side of membrane wall and filtrate is regained from the opposite side of membrane wall, and this method comprises:

  • A) remove liquid from comprise the brilliant container of son, liquid level drops to till first horizontal plane below the upper horizontal plane at film in comprising the brilliant container of son;

    B) end filtration operation;

    C) carry out the liquid backwash of membrane wall, the liquid level in comprising the brilliant container of son is elevated to till described first above water second predetermined level;

    D) with the bubble film surface that ventilates, so that isolate the dirt material from it;

    E) carry out cleaning or the following row who comprises the brilliant container of son, comprise the liquid of telling polluter so that remove;

    AndF) begin filtration operation once more.

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