摘要
论文采用臭氧/紫外(O3/UV)高级氧化技术对难生化降解且微生物毒性大的腈纶聚合工艺废水进行处理,考察了反应时间、pH、污染物浓度等对处理效果的影响。结果表明,O3/UV协同处理腈纶废水的效果优于臭氧和紫外单独作用效果的叠加,有明显的协同促进作用。处理后废水的B/C由原来的0.08提高到0.3以上,可有效提高腈纶废水的可生化性,为后续的生物处理创造良好的条件。在反应时间为30 min、pH为6的条件下,O3/UV协同作用对腈纶废水的处理效果最佳,COD可由1 120 mg/L降解到850 mg/L,去除率达25%,B/C可提高到0.34。降低废水中初始污染物浓度,COD的去除率显著升高,但B/C提高不明显。
Advanced oxidation processes with O3/UV are applied to treat the acrylic fiber wastewater which is biorefractory and has high microbial toxicity.Effects of reacting time,pH value and feed concentration of contamination on the treatment efficiency are systematically investigated.The results show that,with remarkable synergistic effect,the treatment of acrylic fiber wastewater with combination of O3/UV is more efficient than the simple fold of ozone and UV treatment.The B/C of the wastewater increased from 0.08 to 0.3 after treatment,which improved the biodegradability of fiber wastewater and benefits the followed-up biotreatment.The optimum treatment efficiency was achieved after 30 minutes when pH reaches 6.The COD value decreased from 1 120 mg/L to 850 mg/L,with the removd rate of 25%,and the B/C ratio of wastewater is increased to 0.34.
出处
《土木建筑与环境工程》
CSCD
北大核心
2011年第1期135-139,共5页
Journal of Civil,Architectural & Environment Engineering
基金
国家水体污染控制与治理科技重大专项(2008ZX07208-003-01)
关键词
臭氧/紫外
腈纶废水
协同作用
B/C
废水处理
O3/UV
acrylic fiber wastewater
synergistic effect
B/C ratio
wastewater treatment
