Technology of treating coking wastewater by biomembrance process
A technology of coking wastewater and biofilm method, which is applied in the direction of sustainable biological treatment, biological water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problems of coking wastewater that is difficult to treat, cannot be effectively removed, and the effluent COD is high. The effect of thorough sewage treatment, saving infrastructure costs, and small aeration
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[0027] The process of treating coking wastewater by the anaerobic biological filter + aerobic biological fluidized bed + anoxic biological filter disclosed in the present invention will be described in detail below in conjunction with the accompanying drawings.
[0028] The process such as figure 1 As shown, it is divided into the film-hanging period and the formal operation period.
[0029] During the film hanging period, first put the biofilm carrier into the reactor, the carrier in the anaerobic biological filter and the aerobic biological fluidized bed is a suspended biological carrier made of polypropylene, and the carrier is a hollow cylinder with a cross partition inside. The surface is corrugated and uneven, with a length of 10-15mm and a diameter of 8-12mm. The volume of the carrier in the anaerobic biological filter is 60%-80% of the reactor volume, and the volume of the carrier in the aerobic biological fluidized bed The added volume is 30%-40% of the reactor volum...
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