CAJ | 학술논문

研究生物法制备铁系絮凝剂及其影响因素.以FeSO4·7H2O为原料,利用驯化后的氧化亚铁硫杆菌(T.f)在酸性条件下的催化氧化作用制备生物聚合硫酸铁(PFS),并确定最佳制备条件.实验表明:在反应液初始pH值1.5、硫酸铵用量0.5 g/L、初始Fe2+浓度45 9/L、接种量10％、温度30℃时,在转速为120 r/min的恒温水浴摇床中连续培养5～6 d、可以制出pH l.5～2.2、盐基度17.5％～22.7％、全铁含量43.87～45.24 g/L的产品.实验通过处理3种废水来考察其絮凝性能,结果表明:当PFS投加量一定时,COD去除率可达70％以上,脱色率达90％,Zn2+去除率达99％,说明PFS是一种絮凝效果优异的水处理剂.
연구생물법제비철계서응제급기영향인소.이FeSO4·7H2O위원료,이용순화후적양화아철류간균(T.f)재산성조건하적최화양화작용제비생물취합류산철(PFS),병학정최가제비조건.실험표명:재반응액초시pH치1.5、류산안용량0.5 g/L、초시Fe2+농도45 9/L、접충량10％、온도30℃시,재전속위120 r/min적항온수욕요상중련속배양5～6 d、가이제출pH l.5～2.2、염기도17.5％～22.7％、전철함량43.87～45.24 g/L적산품.실험통과처리3충폐수래고찰기서응성능,결과표명:당PFS투가량일정시,COD거제솔가체70％이상,탈색솔체90％,Zn2+거제솔체99％,설명PFS시일충서응효과우이적수처리제.
A novel inorganic polymer flocculant,poly-ferric sulfate (BPFS) was prepared by oxidation of ferrous sulfate using domestic Thiobacillus ferrooxidans (T·f) under acid condition.The optimal conditions for the preparation were pH value of 1.5,(NH4)2SO4 dosage of 0.5 g/L,initial Fe2+ concentration of45g/L,inoculum 10％,rotating speed of 120 r/min,reaction time of 5-6 d and reaction temperature of 30 ℃.Under the optimal conditions,the BPFS product with pH value of 1.5-2.2,basicity of 17.5％-22.7％ and total iron content of 43.87-45.24 g/L was obtained.The application of the BPFS to three wastewaters was carried out,and the removal efficiencies of COD,decolorization and Zn2+ by BPFS can be reached 70％,90％ and 99％,respectively.The result suggests that the BPFS is an excellent flocculant for water treatment.