Technique for treating phenol/anisole-containing production wastewater
A technology for the production of waste water and treatment process, which is applied in natural water treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. It can solve the problems that there are no relevant reports on the treatment process of phenolic waste water, and achieve low cost , The catalytic effect is obvious, and the effect of reducing the content of anisole and COD
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[0026] The composition of raw wastewater is COD: 49000mg / L, volatile phenol: 6000mg / L, methanol: 4500mg / L, anisole: 1400mg / L. The waste water first enters the air flotation unit. The concentration of the air flotation agent polyaluminum chloride is 500mg / L. The bottom of the air flotation unit is fed with a mixture of soda and water from the pressurized dissolved gas tank. The pressure of the dissolved gas tank is 0.2MPa. The waste water is in the air flotation tank. The residence time is controlled to 3h. After the wastewater is treated by the air flotation unit, it enters the adjustment tank 1 to adjust the pH to 5. The effluent from the adjustment tank 1 enters the top of the multi-stage extraction tower via a centrifugal pump. The effective number of extraction stages of the extraction tower is 8, and the extractant enters the extraction tower via a magnetic pump At the bottom, the extraction oil-water ratio is controlled at 1:5, and the composition of the extractant is N-o...
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