Deoiling-dephenolization combined treatment method for high-concentration phenol ammonia wastewater and system
A combined treatment and high-concentration technology, applied in the direction of flotation water/sewage treatment, extraction water/sewage treatment, neutralization water/sewage treatment, etc. Chemical industry and other problems, to achieve the effect of improving wastewater treatment efficiency, improving extraction efficiency, and improving distribution coefficient
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[0037] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:
[0038] The combined treatment method of oil removal and dephenolization of a kind of high-concentration phenolic ammonia wastewater of the present invention, the index of described high-concentration phenolic ammonia wastewater is: COD=10000~30000mg / L, volatile phenol=2000~10000mg / L, oil= 500~3000mg / L, ammonia nitrogen=2000~8000mg / L; pH value=7~14;
[0039] Such as figure 1 Shown, described deoiling and dephenolizing combined treatment method comprises the following steps:
[0040] (1) Air flotation and oil removal of coke oven flue gas;
[0041] High-concentration phenol ammonia waste water 6 enters from the upper part of the air flotation tank 2, and coke oven flue gas 7 enters from the gas collection chamber at the bottom of the air flotation tank 2 as foaming gas; carbon dioxide, nitrogen and waste heat in the coke oven flue gas are used to ...
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