【摘要】 采用连续流搅拌槽式反应器(CSTR)处理硫酸盐废水,20d反应器即启动成功。研究结果表明,不调节进水碱度时反应系统可在pH值为5.4～5.7内运行,但抗酸度冲击能力较差;调节进水碱度时系统可在pH值为6.2～6.9间稳定运行,抗酸度冲击能力较强。COD/SO2-4>2.7时反应系统属于电子受体限制型体系,COD/SO2-4<2.7时属于电子供体限制型体系,增加电子受体限制型系统中的硫酸盐浓度和增加电子供体限制型系统中的COD浓度都可提高系统的还原效能。当HRT>5.2h时,硫酸盐还原菌(SRB)可充分利用酸化产生的乙醇。在保证硫酸根去除率≥80%时,SO2-4/(m3·d)。4负荷最高可达7.58kgSO2-更多还原

【Abstract】 Continuous stirred tank reactor was used to treat sulfate wastewater,the reactor started up successfully within 20 d.The study result showed that in the case of no control given to the influent alkalinity,the reaction system can operate in the pH range of 5.4～5.7,with less resistance to acidity shocking.In the case of giving control to influent alkalinity,the system can operate steadily at pH range of 6.2～6.9,with stronger resistance to acidity shocking.If COD/SO2-4 >2.7,the system is limited by electron acceptor,if COD/SO2-4 < 2.7, it is limited by electron donor.Both the increase of sulfate concentration in electron acceptor limitation type system and COD concentration in electron donor limitation type system will result in the improvement of reduction efficiency.When HRT is more than 5.2 h,sulfate-reducing bacteria (SRB) can make full use of alcohol produced by acidification.If sulfate removal rate is guaranteed to be more than 80%,SO2-4 loading can come up to 7.58 kgSO2-4 /(m3·d) at maximum.更多还原