研究了用氧吸收速率（Oxygen Uptake Rate，简称OUR）表征活性污泥硝化活性的方法。利用生物抑制剂丙烯基硫脲（allylthiourea，简称ATU）和氯酸钠（NaClO3）可以选择性地抑制亚硝酸细菌和硝酸细菌的活性。通过测量不同时间的OUR，可以分别计算出污泥的亚硝化活性和硝化活性。结果表明：该方法的测量结果与实际反应器中的硝化反应情况相当一致。该方法简单易行，快速方便，适用于硝化系统中硝化活性的测量。

从正在运行的流化床生物反应器中分离出对三氯酚具有高效脱氯能力的微生物群落，在含柠檬酸钛为氧化还原缓冲剂的合成培养基中研究了该群落的生理特性。结果表明，该微生物菌群可以利用丙酮酸为碳源和能源，丙酮酸发酵、硫酸盐还原和脱氯反应三个过程严格地按顺序依次进行，并且丙酮酸浓度在最初2d内急剧下降，同时有代谢产物乙酸、甲酸和氢气形成。只有当硫酸盐被还原成硫化物后，脱氯反应才会发生，硫酸盐和钼酸盐的存在会强烈地抑制微生物的脱氯活性。溴乙烷磺酸酯（BEs）可以完全抑制微生物的产甲烷活性。青霉素G（10μg/mL）对该微生物菌群的脱氯作用没有抑制，该微生物菌群按形态特征可以分为3类，即弧菌、链球菌和杆菌，利用荧光标记的16s和23s rRNA寡核苷酸探针进行原位杂交试验表明，该微生物菌群中存在Proteobacteria的r亚类和δ亚类。

对生物传感器快速测定BOD的试验装置与测定方式进行了改进，改进后的测定系统具有良好的重现性和准确度。同时确定了最佳测定条件为温度30℃，pH5.0，固定化细胞15g。

将降解2，42二氯酚（简称2，42DCP）的高效菌固定化后，研究了半连续流实验中固定化细胞降解活力的变化及2，42DCP降解的动力学，并比较了固定化高效菌强化的SBR系统与不加固定化高效菌的对照系统长期运行时对目标物的降解特性. 结果表明：固定化细胞的降解活性会在半连续流降解实验中得到恢复与增强，固定化细胞对2，42DCP 的降解遵循零级反应动力学。投加固定化菌的强化SBR系统较不加固定化菌的对照系统具有启动时间短，耐冲击负荷能力强的特点. 进水为混合基质或目标物非持续性存在下，长期运行中，生物强化系统保持了对目标物降解的特异性。

Anovel immobilized-cell bioreactorwas developed and utilized for treatment of high-carbohydratewastewater and production of single-cell protein (SCP) simultaneously. The system is the internal airlift loop reactor with ceramic honeycomb support for biofilm (IAL-CHS), and the microorganisms tested was Candida tropicalis, which has a high protein yield. The optimum temperature for C. tropicalis was 35-40℃, and bioreactor experiments were performed at 35℃. The internal airlift loop reactor with ceramic honeycomb supports allowed a large and dense accumulation of biomass, but also generated significant SCP. Mass-transport resistance did not limit the overall COD-removal kinetics and oxygen mass transfer may have been accelerated to the biofilm. Fermentation of carbohydrates to organic acids lowered the pH below the optimum range of 4.5-6.5, and pH below 4.5 retarded or stopped the oxidation reactions for the organic acids. Since organic-acid oxidation is necessary for attaining COD removal from the wastewater, pH control may be essential for effective treatment in some cases with high-carbohydrate wastewaters. The addition of 0.35g/L urea could increase the COD removal rate. Continuous wastewater was carried out and the organic loading reached 15kg COD/(m3 day).