Non-biochemical process for treating printing and dyeing wastewater
The invention relates to a non-biochemical process for treating printing and dyeing wastewater. The non-biochemical process includes the following steps that a step S1, electro flocculation and air floatation sedimentation are conducted to leachate; a step S2, the leachate after treatment of the ste...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention relates to a non-biochemical process for treating printing and dyeing wastewater. The non-biochemical process includes the following steps that a step S1, electro flocculation and air floatation sedimentation are conducted to leachate; a step S2, the leachate after treatment of the step S1 is treated by photolysis and electrochemical reaction; a step S3, the leachate after treatmentof the step S2 is treated by electric field and photocatalytic oxidation reaction, and the non-biochemical process of the leachate is completed after the leachate reaches the standard, and if the leachate fails to meet the requirements, a step S4 is used; and the step S4, the leachate treated in step S3 is treated by electrochemical reduction reaction to complete the non-biochemical treatment of the leachate. The non-biochemical process adopts the new technology and process of electro-optic comprehensive reaction to treat the landfill leachate, which can completely replace the physicochemicaltreatment + biochemical tr |
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