EM菌-好氧污泥联合处理皂素生产废水的研究

Compound Treatment of Saponin Manufacturing Wastewater by Effective Microorganisms(EM) and Aerobic Sludge

利用EM菌分别进行了富集培养、逐级驯化和EM菌-好氧污泥联合处理皂素生产废水的试验。结果表明：对于COD值为20 000-25 000 mg·L^-1的皂素生产废水,在EM菌：好氧活性污泥（VEM菌∶V好氧活性污泥）=1∶1 mL·mL^-1,气液比（V气∶V液）7∶1 mL·mL^-1·min^-1,接种量（V菌体∶V液）5%mL.mL-1,起始pH值6.5,温度30-32℃,间歇曝气,处理时间5 d的条件下,皂素生产废水的COD去除率可达97.95%,色度去除率可达到66.67%。

Technical conditions for compound treatment of saponin manufacturing wastewater by using enrichment cultured, tamed effective microorganisms and aerobic sludge were studied. The results showed that under the following conditions： COD of saponin manufacturing wastewater： 20 000 25 000 mg · L^-1 ,VEM ： Vaerobiesludge =1 ： 1 mL · mL^-1 , pH：6.5, temperature：30-32℃, inoculation： 5% mL · mL^-1 ,Vgas ： Vliquid=7 ： 1 mL · mL^-1· min^-1 ,and treatment period of intermittent aeration： 5 days, wastewater＇s COD removal rate can reach 97.95%,the color removal rate is 66.67%. The operation of this technique is simple and can be applied to the practical projects as a first level biodegradable treatment.