Device for treating organic wastewater by ozone and active carbon and method therefor
A technology of organic wastewater and activated carbon, applied in the field of environmental technology and water treatment, can solve the problems of frequent regeneration and limited adsorption capacity, and achieve the effect of reducing treatment cost, simple method and improving utilization rate
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[0014] Example 1
[0015] The waste water object is the effluent produced by a fine chemical plant with complex water quality. After analysis, the main organic pollutants are adiponitrile isophenolic compounds, the COD concentration of the waste water is 10911mg / L, the initial pH is 4.4, and the ozone inlet flow rate is 60L / h. Gas-phase ozone concentration was 41 mg / L, 500 mL of water sample was treated in a single time, 30 g of activated carbon was added, and after 60 minutes of reaction, the removal rate of COD was 66.9%. The COD of the activated carbon reaction effluent reaches the level of 3600mg / L, and the ozone utilization efficiency is 0.58mgCOD / mgO when ozone is oxidized alone 3 Raised to 1.3mg COD / mg O 3 , the ozone utilization efficiency is increased by 55%. Under alkaline conditions, the treatment effect is better. Adjust the pH of the wastewater to 10.0, and keep other reaction conditions unchanged. After 60 minutes of reaction, the effluent COD reaches a level o...
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[0016] Example 2
[0017] The treatment object is 1g / L nitrophenol wastewater, the initial reaction pH is 4.5, the ozone inlet flow rate is 60L / h, the gas phase ozone concentration is 41mg / L, a single treatment water sample 500mL, adding activated carbon 10g, after 60min reaction, The removal rate of nitrophenol was 93.2%, the removal rate of COD was 85.4%, and the COD of effluent was reduced from 1780mg / L in influent to 260mg / L. The test data and results are shown in Table 1.
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