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以黄河水为研究对象,考察臭氧氧化降解和活性炭吸附去除水中有机污染物的效能。结果表明,在臭氧投加量为1～3 mg.L-1时,CODMn的去除率由8%升高到20%,之后其变化不明显;UV254的去除率由9%升高到30%,此时臭氧即可以将不饱和有机物大量去除。臭氧投加量为1～2 mg.L-1时,短时、大强度曝气,其出水CODMn和UV254的去除效果较好。高臭氧投加量时,增加曝气接触时间可以提高臭氧对有机物的去除率,出水效果较好。在活性炭投量为10 mg.L-1,pH为8.3,水温为45℃,臭氧投加量为3 mg.L-1时,活性炭对黄河水的吸附效果较理想。臭氧氧化对黄河水中TOC的去除效果低于CODMn和UV254的去除效果,当臭氧投加量为8 mg.L-1时,TOC去除率才为10%。但是臭氧投加量为5 mg.L-1,BDOC提高了80%。因此臭氧氧化可以大幅度提高原水的可生物降解性,为后续生物处理提供有机营养物质条件。
Taking Yellow River water as the research object, the effects of ozone oxidation degradation and activated carbon adsorption on the removal of organic pollutants in water were investigated. The results showed that the removal rate of CODMn increased from 8% to 20% when the dosage of ozone was 1 ~ 3 mg.L-1, but the change was insignificant. The removal rate of UV254 increased from 9% to 30% , Then ozone can be a large number of unsaturated organic matter removed. Ozone dosage of 1 ~ 2 mg.L-1, a short time, high intensity aeration, the effluent CODMn and UV254 removal effect is better. When the dosage of high ozone is increased, the contact time of aeration can increase the removal rate of organic matter by ozone, and the effluent effect is better. The activated carbon adsorption on the Yellow River water was better when the dosage of activated carbon was 10 mg.L-1, the pH was 8.3, the water temperature was 45 ℃ and the dosage of ozone was 3 mg.L-1. The effect of ozone oxidation on TOC removal in the Yellow River water is lower than that of CODMn and UV254. When the ozone dosage is 8 mg.L-1, the TOC removal rate is only 10%. However, ozone dosage was 5 mg.L-1, BDOC increased by 80%. Therefore, ozone oxidation can greatly improve the biodegradability of raw water and provide organic nutrient conditions for subsequent biological treatment.