摘要
本文探索研究用辐射技术处理焦化厂废水中的氰化物。研究表明,电离辐射可将剧毒的氰化物转变为无毒或毒性较小的产物。单独用辐射技术处理焦化厂废水时,体系中的有机污染物与氰化物竞争水辐解形成的活性粒子(H、e_(aq)^-、OH自由基)抑制氰化物的辐射分解。用活性炭预处理废水可以提高废水中氰化物和有机物的辐射去除率。H_2O_2和N_2O通过转变e_(aq)^-成为OH自由基提高了氰化物的分解,OH自由基在降低氰化物和COD值方面起着重要的作用。
The treatment of cyanide in waste water of coke-oven plant with ra-
diation-technique was investigated. The investigation indicated that toxic products
under γ-ray irradiation were changed into less-toxic or non-toxic products. Organic po-
llutants will compete with cyanide for scavenging active intermediates of water (H. e^-_(aq)
and OH radical). Therefore, it will inhibit cyanide radiolysis. The pretreatment with
active carbon increases the radiolytic decomposition rate of cyanide and damage rate of
organism in waste water. H_2O_2 and N_2O convert e^-_(aq) into OH radical. however they
improve the efficiency decomposition of cyanide. OH radical plays an important role
in reducing cyanide content and COD value.
出处
《辐射研究与辐射工艺学报》
CAS
CSCD
北大核心
1992年第1期25-29,共5页
Journal of Radiation Research and Radiation Processing
关键词
氰化物
焦化厂
废水
吸附
辐射处理
Cyanide
Organic pollutants
COD
Waste water of coke-oven Plant
Radiolysis
Decomposition rate
Active carbon
