臭氧-生物活性炭净水工艺处理苯酚污染的应急效果及影响因素分析

考虑到突发性水污染中有毒有机物的高频现率,选用苯酚为有毒有机物代表,通过模拟突发苯酚污染的情况,研究了臭氧-生物活性炭(O3-BAC)工艺对苯酚污染的应急处理效果,并且分析了工程中实际环境因素如空床接触时间(EBCT)、pH值对该应急能力的影响.研究表明,在突发性苯酚污染的应急处理中,0.6 mg/L的臭氧可将初始苯酚浓度5倍于达标浓度的进水处理至饮用水达标浓度,即低于0.002 mg/L,15.3 min的空床接触时间是判定其是否为该应急过程的关键因素的分界点,为了取得较好的应急效果,可适当提高进水pH值.

Phenol pollution emergency treatment and influencing factors of O3-BAC process

Considering the high frequency rate of toxic organic compounds in water pollution emergency, phenol was selected as the toxic organic compound.The emergency handling ability of O3-BAC process for phenol was studied by simulating the phenol pollution, and the effects of actual environmental factors in engineering,such as EBCT and pH value were discussed. It was found that 5 times phenol initial concentration can be treated to meet the drinking water sanitary standard by O3-BAC process with 0.6 mg/L O3 in response to the phenol pollution.15.3 min of EBCT is the demarcation point to judge whether it is the key factor of this process. In addition, improving the initial pH value appropriately was needed.