SBR和HBR两种反应器中N2O产生量的研究

为考察不同反应器类型对N_2O产生量的影响.试验采用好氧-缺氧SBR生物反应器和间歇式复合生物反应器HBR(填料填充率:30%,运行方式:瞬间进水—曝气360 min—沉淀40 min—排水20 min),研究实际生活污水脱氮过程中N_2O的产生与释放情况,重点考察不同生物反应器类型对脱氮过程中N_2O产生量的影响.结果表明,SBR系统处理实际生活污水脱氮过程中N_2O主要产生于硝化阶段,不同生物反应器类型对脱氮过程中N_2O产生量有显著影响.SBR生物反应器和HBR生物反应器硝化过程N_2O产生量分别为0.76和1.48 mg/L,SBR生物反应器硝化过程中N_2O产生量远低于HBR生物反应器N_2O产生量.

复合SBR反应器异位修复景观水体效果及特性研究

构建了竹丝填料和悬浮活性污泥共存的复合SBR反应器,在批式实验条件下(周期为4h),研究了复合SBR反应器异位修复景观水体的效果及相关特性.结果表明:进水COD为58.80~83.20mg/L,NH_4^+-N为1.24~2.19mg/L,复合SBR反应器对COD、NH_4^+-N平均去除率分别为51.15%和59.29%,出水SS低于15.00mg/L,水温变化对该反应器的净化效果没有显著影响.对复合SBR系统内的指示性微生物观察分析发现,竹丝上和悬浮污泥内种群有一定互补性.此外,景观水体修复过程中,复合SBR系统内MLSS不断降低,可能与景观水体污染物浓度偏低、复合SBR系统内出现内源呼吸过程有关.

复合厌氧反应器—SBR工艺处理粪渣废水

采用复合厌氧反应器—SBR工艺进行了粪渣废水处理的中试,结果表明,处理后出水的各项指标都能满足GB8978—1996的三级标准,且脱氮效果显著。

Treatment of Practical Dye Wastewater Using a Double Dielectric Barrier Discharge System Combined with a Sequencing Batch Reactor System

Synthetic dyes are substances that are relatively stable and difficult to degrade in wastewater treatment plants using normal physical,chemical or / and biological treatment. The present work explored the synergistic effect of non-thermal plasma( NTP) and biological wastewater treatment technologies on practical dye wastewater degradation by establishing a double dielectric barrier discharge( DDBD) system combined with a sequencing batch reactor( SBR) system. The biodegradation and degradation efficiency of the DDBD-SBR system was investigated. The investigation results indicated that the DDBD technology was effective in treating the practical dye wastewater as a pre-treatment process. After a 10-min treatment,although the total organic carbon( TOC) removal efficiency was not so significant, the decolouration and the biodegradation were improved greatly. The microbial toxicity test revealed that the sample after degradation became less toxic than the original dye,which demonstrated the treatment had a significant effect on the reduction of toxicity. In addition,the SBR technology remedied the defects of DDBD treatment and improved TOC removal efficiency noticeably. The hybrid DDBD-SBR system made full use of the advantages of the individual technologies and exhibited an efficient capability for practical dye wastewater treatment.

一种新型复合生物反应器处理生活废水的研究初探

研究从铁-炭微电解反应的基本原理出发,以SBR为主体工艺,将微电解作用与活性污泥法复合成为一种新型复合生物反应器。重点考察改复合反应器在处理模拟生活废水方面的过程及效率。研究表明,新的复合系统利用微电解的作用原理,强化了活性污泥法的生物学作用,提高了COD、氨氮、磷等污染物的去除率。这对目前以传统活性污泥法为基础的污水处理厂的改扩建提供了一定的探索方向。

处理综合城镇污水的SBR工艺提标改造研究

采用间歇膨胀复合水解工艺预处理综合城镇污水（B／C值〈0．3，TN为30—80mg／L，SS〉300mg／L），考察了不同HRT下，水解反应器出水B／C值的变化以及对COD的去除率和污泥浓度。结果表明：在HRT由16h降低到6．5h的过程中，水解反应器的B／C变化值由-0．06提高到0．07，而COD去除率由42％降低到22％，在HRT为8h条件下，B／C变化值和COD去除率分别为0．07和27％。间歇膨胀复合水解池出水经SBR处理后，其COD、NH4-N、TN分别为65、0．75、17．71mg／L，而生产性SBR出水的COD、NH^4＋-N、TN分别为93、16．4、34mg／L。应用悬浮生物滤池处理生产性SBR池出水，在HRT为2h、温度为14～19．5℃、进水NH^4＋-N为21．8～41mg／L条件下，出水NH4^＋-N为1．6～12．79mg／L，平均去除率为74．6％，NH^4＋-N负荷为0．238kg／（m^3·d）。可见，间歇膨胀复合水解与悬浮生物滤池工艺适用于综合城镇污水的提标改造。