臭氧/改性粘土/生物炭工艺处理富营养化水体

Combined Process of Ozonation,Modified Clay and Biological Activated Carbon for Treating Eutrophic Water

针对富营养化水体的水质特征，构建了臭氧预氧化／改性粘土／臭氧一生物活性炭组合工艺，并用于处理常州科教城的景观河水。结果表明，在进水流量为50L／h、预氧化的臭氧投量为1．2mg／L、改性粘土投量为1．2g／L、臭氧一生物活性炭段的臭氧投量为2mg／L的条件下，当进水浊度为29～38NTU、CODM。为6～9mg／L、TN为3．47～3．60mg／L、TP为0．21～0．25mg／L、藻类为（3～10）×10。个／L时，该工艺对浊度、CODM。、TN、TP和藻类的去除率分别为97．5％、77．7％、81．9％、95．4％和99．2％，出水水质达到了《地表水环境质量标准》（GB3838--2002）的I类或Ⅱ类标准。

Aimed at the characteristics of eutrophic water, the combined process of ozonation, modified clay, ozone/biological activated carbon was built and used to treat the landscape river water in Changzhou Science and Education City. The results show that under the conditions of 50 L/h influent flow rate, 1.2 mg/L ozone dosage in ozonation pretreatment, 1.2 g/L modified clay dosage and 2 mg/L ozone dosage in ozone/biological activated carbon process, the removal rates of turbidity, CODMn, TN, TP and algae are 97.5% , 77.7% , 81.9% , 95.4% and 99.2% respectively when the influent turbidity, CODMn, TN, TP and algae are 29 to 38 NTU, 6 to 9 mg/L, 3.47 to 3.60 mg/L, 0.21 to 0.25 mg/L and （3 to 10） × 10^8 ind./L respectively. The effluent quality meets the I or 11 criteria specified in the Environmental Quality Standards for Surface Water （ GB 3838 - 2002 ）.