摘要
投加沸石可显著提高污水生物处理系统的硝化能力.以溶解氧(DO),氧化还原电位(ORP)和pH为控制参数,对沸石投加型序批式活性污泥法(zeo-SBR)和对照SBR进行了好氧段实时控制研究.结果表明:(1)pH作为好氧段实时控制的指示参数具有最高的稳定性,在进水总氮(TN)浓度较高的条件下,DO和ORP对硝化终点的指示不明确;(2)在进水TN浓度分别为25.1,62.1和92.6mg.L-1的条件下通过实时控制,zeo-SBR所需曝气时间分别为对照SBR的90.8%,61.0%和83.5%时(即分别比对照组节省曝气时间0.23,2.50和1.12h),两系统都可达到99%氨氮去除率;相对于对照SBR,zeo-SBR的TN去除率分别提高了4.0%,5.1%和1.9%.
Improved nitrification efficiency has been observed when zeolite is added to biological wastewater treatment systems in many studies,however the optimal control of hybrid biological reactors with zeolite addition is rarely reported. 130, ORP and pH are chosen as indicators in the real-time control of optimal aeration time in SBR with zeolite as additive（zeo- SBR）and control SBR. The results indicated that： （1） pH can be reliable to serve as the control indicator, while DO and ORP failed to clearly reflect the endpoint of the nitrification when treating high TN-contained wastewater; （2） When TN concentrations of the influent were 25.1,62.1 and 92.6 mg·L^-1, the aeration times of zeo-SBR required decreased by 0.23,2.50 and 1.12 h respectively, compared with control SBR when maintaining the same nitrification rate（ around 99 % ）. Besides, the TN removal rates of zeo-SBR increased by 4.0 %, 5.1% and 1.9 % respectively compared with the control SBR.
出处
《复旦学报（自然科学版）》
CAS
CSCD
北大核心
2008年第4期487-493,共7页
Journal of Fudan University：Natural Science
关键词
沸石
SBR
实时控制
优化
zeolite
SBR
real-time control
optimal
