A kind of method for strengthening heterogeneous catalytic ozonation treatment of petrochemical wastewater
A technology for heterogeneous catalysis and petrochemical wastewater, applied in the direction of oxidized water/sewage treatment, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of poor treatment effect and limited treatment effect of petrochemical wastewater, and achieve improvement The effect of TOC removal rate, fast delivery and cost reduction
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Embodiment 1
[0032] A method for strengthening heterogeneous catalytic ozone oxidation treatment of petrochemical wastewater, comprising the following steps:
[0033] S1. Pre-oxidation of petrochemical wastewater: The petrochemical wastewater is passed into the first reaction tank 1, and ozone is introduced into the first reaction tank 1 for pre-oxidation treatment. The pre-oxidation treatment time is 1h, and the amount of ozone introduced is 0.2 mg / min·L -1 ;
[0034] S2, pH adjustment of petrochemical wastewater: adding a pH adjuster to the pre-oxidized petrochemical wastewater in step S1 to adjust the pH of the petrochemical wastewater to 9, specifically: first, use slaked lime to adjust the pH of the petrochemical wastewater to 8.5, Then use a pH regulator to adjust the pH value of the petrochemical wastewater to 9, and the pH regulator is a sodium hydroxide solution with a mass fraction of 50%;
[0035] S3, petrochemical wastewater recycling treatment:
[0036] S3-1. Primary treat...
Embodiment 2
[0043] This embodiment differs from Embodiment 1 in that:
[0044] The way of introducing ozone in steps S1, S3 and S4 is as follows: ozone micro-bubble injection, the micro-bubble generator 3 is externally connected to the bottom of the first reaction tank 1 and the second reaction tank 2 through pipelines, and the middle of the second reaction tank 2 is provided with a micro-bubble generator 3. A cylindrical ultraviolet lamp 4, a movable baffle 5 is arranged on the top of the second reaction tank 2, a driving compartment 6 is arranged above the movable baffle 5, a drum 7 is arranged inside the driving compartment 6, and a motor group 8 is arranged on the top of the drum 7. The unit 8 includes a telescopic motor 81 connected to the top of the drive compartment 6 and a rotating motor 82 located at the output end of the telescopic motor 81. The output end of the rotating motor 82 is connected to the top center of the drum 7, and the bottom center of the drum 7 is provided with a...
Embodiment 3
[0046] This embodiment differs from Embodiment 1 in that:
[0047] In S1, the pre-oxidation treatment time is 2h, and the amount of ozone introduced is 0.1 mg / min·L -1 .
[0048] In this embodiment, the longer the ozone pretreatment time is, the less the required amount of ozone is introduced, and the shorter the ozone pretreatment time is, the larger the required amount of ozone is introduced, which is reasonable within the parameter range given by the present invention. Adjust it.
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