高硫酸盐负荷的间歇好氧污水处理工艺运行研究
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摘要
研究了低温和常温条件下高硫酸盐负荷的间歇好氧污水处理系统的运行状况及其处理城市污水的效果。试验结果表明,两种系统的运行条件均为:曝气时间/停止时间=20 s/2 min,COD/SO2-4=0.75,COD浓度1500 mg/L;常温系统启动期为8d,低温系统启动期为12d。低温系统正常启动之后,和常温系统的COD去除效果相当,COD去除率也在75%以上。在运行过程中,系统中的硫酸根含量呈下降趋势,硫酸盐得到有效去除。
The process of intermittent aerobic wastewater treatment system with high sulfate was studied. The results shown that,the conditions of the system were: aeration time / halt time = 20 s / 2 min,COD / SO42- = 0. 75,COD concentration 1500 mg / L; The start time of normal temperature and low temperature system were 8 and 12 days,separately. The COD remove rate of the low temperature system was basically the same as the normal system,and the COD remove rate could reach 75%. The sulfate content in the system was declined with the process,then the sulfate was removed effectively.
The process of intermittent aerobic wastewater treatment system with high sulfate was studied. The results shown that,the conditions of the system were: aeration time / halt time = 20 s / 2 min,COD / SO42- = 0. 75,COD concentration 1500 mg / L; The start time of normal temperature and low temperature system were 8 and 12 days,separately. The COD remove rate of the low temperature system was basically the same as the normal system,and the COD remove rate could reach 75%. The sulfate content in the system was declined with the process,then the sulfate was removed effectively.
引文
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[2]胡凯光,汪爱河,冯志刚,等.硫酸盐还原菌及在处理硫酸盐废水中的作用[J].铀矿冶,2007,26(1):48-52.
[3]赵继红,李继香,何淑英,等.间歇好氧硫酸盐废水处理系统微生物区系解析[J].环境工程学报,2008,2(7):916-921.
[4]汤宜听,韩仲果.加热沉淀法测定食盐中硫酸根含量[J].苏盐科技,2008(2):4-5.
[5]冯俊丽,马鲁铭.高浓度硫酸盐废水的厌氧生物处理[J].环境保护科学,2005,127(31):23-26.
[6]方艳,闵小波.硫酸盐还原菌生理特性及其在废水处理中的应用[J].工业安全与环保,2006,32(5):17-20.
[7]S.E.Coetser,W.Pulles,R.G.M.Heath.Chemical Characterisation of Organic Electron Donors For Sulfate Reduction For Potential Use in Acid Mine Drainage Treatment[J].Biodegradation,2006(17):1007-1017.
[8]周伟丽,王妍春,今井刚,等.高硫酸盐难降解废水高温厌氧处理中限量曝气的应用及影响[J].环境科学,2006,27(7):1339-1344.
[9]万海清,苏仕军.硫酸盐还原菌的生长影响因子及脱硫性能的研究[J].高校化学工程学报,2004,18(2):218-223.
[10]刘荣丽.培养SRB处理高浓度硫酸盐废水[J].矿业工程,2007,5(4):49-51.