臭氧-双氧水联用预处理高浓度制药废水

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  本文针对制药废水高COD高盐量的特点,采用臭氧-双氧水联用技术对其进行预处理,提高其可生化性,便于实现后续生物处理。臭氧作为一种强氧化剂,可氧化难降解有机物,H2O2在溶液中分解的中间体可促进反应形成较多的·OH自由基,产生的协同作用可进一步强化O3的氧化能力。本实验通过臭氧-双氧水联用技术预处理高浓度制药废水,研究了反应时间、pH值、O3用量、H2O2投加量对废水COD去除率的影响,结果表明:当pH值为9左右(原水),O3流量为200L/h、H2O2投加量为10ml/L时,废水COD去除率可达55%左右,减轻了后续生物处理的负担。
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