Test Of Advanced Wastewater Treatment By Hydrogen Peroxide,activated Carbon,zeolite Different Combination Processes

In this paper, with self-preparation water sample for raw water, through the comparative experiments study the wastewater advanced treatment by hydrogen peroxide, activated carbon, zeolite different combination processes, base on the results of previous studies. Analysis of the principle and characteristics of various combination processes. To find out the optimal combination process. This test is divided into two parts: the first part is the static test of hydrogen peroxide, activated carbon, zeolite. The second part is the dynamic test of biological activated carbon, bio-zeolite, hydrogen peroxide-biological activated carbon.The static test results of hydrogen peroxide, activated carbon, zeolite show that:â‘ the removal of pollutants by hydrogen peroxide is not obvious, the removal rate of COD and NH^3-N is 39.20% and13.48% respectively. Optimal dosage ratio is3.75mL hydrogen peroxide/L water sample, pH value is 8⁹, the reaction time is 50min.â‘¡COD removal efficiency of activated carbon is good, COD removal rate reaches 83.33%, the best dosage ratio is 1.25g activated carbon /L water samples, pH value is 8⁹, the adsorption time is12h.â‘¢NH^3-N removal efficiency of zeolite is good, NH^3-N removal rate reaches 80.62%, the best dosage ratio is 8g zeolite/L water sample, adsorption time is 660min, initial concentration of NH^3-N is 25.00mg /L.The dynamic test results of biological activated carbon, bio-zeolite, hydrogen peroxide- biological activated carbon show that: When the influent COD=120.00mg/L, NH^3-N =25.00mg/L, TP=1.0mg/L, pH=7.25⁸.67, T=24²7℃,â‘ the removal of COD, TP by biological activated carbon is better than bio-zeolite, the removal of NH^3-N is not so effective as bio-zeolite. The maximum removal rates of COD by biological activated carbon column and bio-zeolite column are 87.20% and 80.80%, the highest removal rates of NH^3-N are 93.80% and 90.04%, the highest removal rates of TP are 55.00% and 33.00% respectively.â‘¡The removal of COD, NH^3-N, TP by H₂O₂-BAC process is better than BAC process. So H₂O₂ combine with BAC used for wastewater treatment is feasible and should also be widely applied.