摘要
通过单因素实验探究了Fe^(0)类Fenton氧化处理农药中间体废水过程中的最适Fe^(0)和H_(2)O_(2)投加量、初始pH值和最佳处理时间,研究了处理后出水BOD^(5)/COD_(Cr)(B/C)值、体系中亚铁和总铁含量以及·OH的变化规律。结果表明Fe^(0)类Fenton体系中,最适Fe^(0)投加量为6.59 g/L,H_(2)O_(2)投加量为3.33 g/L,初始pH=3,处理时间为50 min,COD_(Cr)去除率达到42.50%。相比于传统Fenton体系,Fe^(0)类Fenton体系COD_(Cr)去除率提高了约17%,出水B/C值达到0.34,加速了·OH的产生,H_(2)O_(2)添加量明显减少,铁的利用效率得到提高,可以有效减少含铁污泥的生成。
Through single-factor experiments,the optimal dosage of Fe^(0) and H_(2)O_(2),initial pH and optimal treatment time in the treatment of pesticide intermediate wastewater by Fe^(0) Fenton oxidation were investigated,and the changes of BOD_(5)/COD_(Cr)(B/C)values,Fe^(2+)and total Fe content in the system as well as·OH radicals in the treated effluent were studied.The results showed that the COD_(Cr) removal rate of the Fe^(0) Fenton system was 42.50% with an Fe^(0) and H_(2)O_(2) dosing of 6.58 g/L and 3.33 g/L respectively,an initial pH value of 3 and a treatment time of 50 min.Compared with the traditional Fenton system,the COD_(Cr) removal rate of the zero-valent iron Fenton system was increased by about 17%,and the B/C value of the effluent reached 0.34,which accelerated the generation of·OH and significantly reduced the amount of H_(2)O_(2).Therefore,the efficiency of iron utilization was improved and the generation of iron-containing sludge could be effectively reduced.
作者
杨达
崔良
翟剑锋
霍宗超
曹其亮
周广基
李乙鑫
魏文新
杨立浩
王龙玉
张恒
YANG Da;CUI Liang;ZHAI Jianfeng;HUO Zongchao;CAO Qiliang;ZHOU Guangji;LI Yixin;WEI Wenxin;YANG Lihao;WANG Longyu;ZHANG Heng(Qingdao Municipal Bureau of Ecology and Environment Chengyang Branch,Qingdao 266042,China;Qingdao Municipal Bureau of Ecology and Environment Jiaozhou Branch,Qingdao 266042,China;College of Environment and Safety Engineering of Qingdao University of Science and Technology,Qingdao 266042,China;College of Marine Science and Biological Engineering,Qingdao University of Science and Technology,Qingdao 266042,China;Guangdong Provincial Key Laboratory of Green Chemical Product Technology,Guangzhou 510640,China)
出处
《化工科技》
CAS
2023年第1期60-64,共5页
Science & Technology in Chemical Industry
基金
山东省自然科学基金项目(ZR2022MB135)
广东省绿色化学产品技术重点实验室开放课题项目(GC 202112)。
