摘要
为分解转化ABS废水中的有毒难降解污染物,提高废水的可生化性,采用3种不同的化学氧化法分别对该废水进行预处理,研究不同的化学氧化法对该废水的COD、TOC、TN和苯系物去除效率及其可生化性的影响.试验结果表明:芬顿试剂法能分解矿化废水中的有毒难降解有机物,废水的COD、TOC、TN和苯系物的去除率分别为70.6%、77.7%、36.0%和100%,ρ(BOD5)/ρ(COD)值由0.32提高到0.56;臭氧氧化法能分解转化有机污染物,废水中苯系物的分解转化率和NH3-N的生成率分别达到100%和58.9%,ρ(BOD5)/ρ(COD)值由0.32提高到0.51;次氯酸钠氧化法处理效果差,且可能产生毒性更强的有机氯代物,导致ρ(BOD5)/ρ(COD)值降低至0.29.
Abstract: To decompose and transform the toxic nonbiodegradable organic compounds of ABS resin wastewater and increase its biodegradablity, three different chemical oxidation methods are used.Influences of the different chemical oxidation methods on biodegradation and removal efficiency of COD, TOC, TN and benzene series are investigated. Results show that toxic nonbiodegradable organiccompounds can be directly mineralized by fenton reagent, the removal efficiencies of COD, TOC, TN and benzene series are 70.6%, 77.7%, 36.0% , and 100%, respectively, and then p(BOD5)/p(COD)increases from 0. 32 to 0.56. The organic compounds can be transformed into biodegradable organic compounds by ozonation, the rate of decomposing and transforming of benzene series reaches 100% , andthe transformation efficiency of NH3-N from organic nitriles is 58.9% ; therefore, p( BODs ) /p( COD) increases from 0.32 to 0.51. The treatment effect of sodium hypochlorite is the worst, and the moretoxic of the chlorinated compounds may be produced, which causes p ( BODs )/p(COD) to reduce to 0.29.
出处
《北京工业大学学报》
EI
CAS
CSCD
北大核心
2012年第3期432-437,共6页
Journal of Beijing University of Technology
基金
国家科技重大专项资助项目(2008ZX07207-004)