Closed control method of paper-making waste water

Closed control method of paper-making waste water

  • CN 1,245,845 A
  • Filed: 07/01/1999
  • Published: 03/01/2000
  • Est. Priority Date: 07/01/1999
  • Status: Abandoned Application
First Claim
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1. , a kind of improvement method of closed paper waste, it is characterized in that comprising processing method to black liquor, middle section water and plain boiled water, wherein, the processing method of described black liquor comprises the preparation of bacterium liquid and black liquor is made the lignin segregation through biochemical treatment, under alkali condition, again after filtration, filtrate is returned, and is used for boiling;

  • The processing method of described middle section water is that middle section water is carried out coagulating gas-floating, and its scum silica frost is re-used as regenerative agent, and water is sterilized after filtration by reuse;

    The processing method of described plain boiled water is that plain boiled water is purified the back reuse after filtration.

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