Method for treating coal chemical wastewater

Method for treating coal chemical wastewater

  • CN 102,211,839 A
  • Filed: 03/24/2011
  • Published: 10/12/2011
  • Est. Priority Date: 03/22/2011
  • Status: Active Application
First Claim
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1. a coal chemical industrial waste water treatment process is characterized in that, comprises the steps:

  • 1. pre-treatment;

    the coal chemical industrial waste water in the wastewater equalization pond is fed pretreatment unit carry out pre-treatment;

    2. the first biochemical unit biochemical treatment;

    pretreated waste water is fed the first biochemical unit carry out biochemical treatment;

    3. absorbing unit adsorption treatment;

    the waste water after the above-mentioned biochemical treatment is fed absorbing unit carry out adsorption treatment, be provided with sorbing material in the described absorbing unit, described waste water is carried out adsorption treatment;

    4. settling tank precipitation process;

    the waste water after the described adsorption treatment is fed settling tank carry out separating of sorbing material and water, described sorbing material is at the pond bottom sediments and give off at the bottom of the pond;

    5. deep biochemical is handled;

    the waste water after the above-mentioned precipitation process is fed the second biochemical unit carry out biochemical treatment, discharge behind the waste water filtering after the described biochemical treatment.

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