摘要
采用鸟粪石沉淀法、Fe/C微电解-Fenton氧化组合工艺对阻燃剂废水进行预处理,研究各阶段的最优反应条件。结果表明:鸟粪石沉淀最优工艺条件为pH 9.5、HRT=20 min、n(Mg)∶n(P)=1.1∶1,Fe/C微电解-Fenton氧化的最优工艺条件为初始pH 3.5、HRT=80 min、双氧水(30%浓度)的投加量为10%。最优条件下连续运行的出水COD、TP和NH_4^+-N的去除率可达70%、97.8%和78.6%左右。
Flame retardant wastewater was pretreated by struvite precipitation and Fe/C micro-electrolysis-Fen- ton combination oxidation process. The optimal reaction conditions at each stage were studied. The optimum process conditions for the struvite precipitation stage were:influent pH 9.5, HRT 90 rain, and n(Mg) :n(P) = 1. 1 : 1. The optimum process conditions for the Fe/C micro-electrolysis-Fenton oxidation stage were:influent pH 3, HRT 90 min, and H202 dosage of 10%. With continuous operation under optimal conditions, the total remov- al rates of COD, TP, and NH4-N were about 70%
出处
《环境工程学报》
CAS
CSCD
北大核心
2017年第7期3997-4002,共6页
Chinese Journal of Environmental Engineering
基金
国家水体污染控制与治理科技重大专项(2012ZX07205-002)
关键词
阻燃剂废水
鸟粪石沉淀法
Fe/C微电解-Fenton氧化
协同氧化
flame retardants wastewater
struvite tion
Synergy oxidation , 97.8% , and 78.6% , respectively. precipitation
Ferric/carbon micro-electrolysis-Fenton oxida-