摘要
用絮凝-Fenton氧化混凝法处理常州某印染厂的退浆废水,絮凝剂采用自制的聚硅酸硫酸铝(PASS),絮凝处理最佳工艺条件:30℃,废水初始pH为5～10,絮凝剂投加质量浓度为22.5 g/L,最佳条件下COD去除率可达38.8%。采用Fenton氧化混凝法进行二级处理,较优的工艺参数为:pH为3～5,n(H2O2)∶n(Fe2+)=2∶1,H2O2投加量为0.15 mol/L,PAM的投加质量浓度为1.75～2.25 mg/L。两步处理后总的COD去除率可达90%左右,B/C由原来的0.11升到0.32。
Flocculation-Fenton oxidation ＋ coagulation process has been used for treating the desizing wastewater which is from a printing dying plant in Changzhou.The self-made PASS is used as flocculant.The optimum flocculation conditions have been obtained as follows：the temperature is 30 ℃,initial pH is about 5-10,and dosage of flocculant is 22.5 g/L,the COD removal rate is up to 38.8%.The second step Fenton oxidation ＋ coagulation treatment has been used for getting better technical parameters as follows：pH 3-5,n（H2O2）∶n（Fe2＋）=2∶1,the dosage of H2O2 is 0.15 mol/L,and PAM is 1.75-2.25 mg/L.After the treatment,the total COD removal rate can be as high as 90% or so,and B/C rised from 0.11 to 0.32.
出处
《工业水处理》
CAS
CSCD
北大核心
2010年第11期28-31,共4页
Industrial Water Treatment
关键词
退浆废水
聚乙烯醇
聚硅酸硫酸铝
絮凝
FENTON氧化
混凝
desizing wastewater
polyvinyl alcohol
poly aluminium sulfate silicate
flocculation
Fenton oxidation
coagulation
