Advanced treatment method of integrated catalytic ozonation-biological aerated filter water
A technology of ozone catalytic oxidation and biological aerated filter, which is applied in the direction of oxidized water/sewage treatment, chemical instruments and methods, multi-stage water/sewage treatment, etc. It can solve the problems that the stability of treatment effect needs to be further improved, and achieve protection Effects of biomass and biological activity, accelerated decomposition, and improved ozone use efficiency
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[0022] Example 1
[0023] The integrated ozone catalytic oxidation biological aerated filter chemical water treatment device is used for advanced treatment of the secondary biochemical effluent of a printing and dyeing factory. The bottom (ozone catalytic oxidation zone) is filled with ozone catalytic oxidant, and the upper part is covered with ordinary biological ceramsite. The filter is Upstream biological aerated filter. The ozone catalytic oxidant ceramsite was prepared according to Example 4 of 201310268105.0 to produce ceramsite with a particle size of 6 to 7 mm; ordinary biological ceramsite was obtained by sintering at 900-1200°C using fly ash, kaolin, and expanding agent as raw materials; The filling height of the catalytic oxidant is about 1m; the filling height of ordinary biological ceramsite is about 2.5m; the treated water volume in this embodiment is 5t / h, and the mass ratio of ozone dosage to COD is 0.5:1. The reaction time of ozone in the contact oxidation chamb...
Example Embodiment
[0025] Example 2
[0026] The integrated ozone catalytic oxidation-biological aerated filter water treatment method is used to perform advanced treatment on the secondary biochemical effluent of a paper mill, and the water volume is 10t / h. The bottom (ozone catalytic oxidation zone) is the ozone catalytic oxidant filler, the upper part is covered with ordinary biological ceramsite, and the filter is an upflow biological aerated filter. The ratio of ozone dosage to COD mass is 0.5:1. The ozone catalytic oxidant ceramsite is prepared with reference to 201310268105.0 in Example 3 to produce ceramsite with a particle size of 5-6mm; ordinary biological ceramsite is selected as fly ash, kaolin, and expanding agent The raw material is sintered at 900~1200℃; the filling height of ozone catalytic oxidant is 0.9m; the filling height of ordinary biological ceramsite is about 2.5m; the reaction time of ozone in the contact oxidation chamber is 1 hour. The treated wastewater enters the biolo...
Example Embodiment
[0027] Example 3
[0028] The integrated ozone catalytic oxidation-biological aerated filter water treatment method is used to treat the contaminated raw water of a water plant with a water volume of 10t / h. The bottom (ozone catalytic oxidation zone) is the ozone catalytic oxidant filler, the upper part is covered with ordinary biological ceramsite, and the filter is an upflow biological aerated filter. The mass ratio of ozone dosage to COD is 0.1:1. The ozone catalytic oxidant ceramsite is prepared according to Example 4 of 201310268105.0 to produce ceramsite with a particle size of 5-6mm; ordinary biological ceramsite is selected from fly ash, kaolin, and expanding agent The raw material is sintered at 900~1200℃; the filling height of the ozone catalytic oxidant is 1m; the filling height of ordinary biological ceramsite is 2m; the reaction time of ozone in the contact oxidation chamber is 1 hour, after ozone pretreatment Wastewater enters the biological aerated filter at the u...
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