高效氧化偶合絮凝法强化处理受污染湖水的研究

为了研究高效氯化偶合絮凝剂对有机物含量较高原水的应用效果．进行了氧化偶合絮凝法强化处理受污染湖水的试验研究．并对其作用机理进行了初步探讨。结果表明．高效氧化偶合絮凝法对COD，SS，NH3^-N和TP均有良好的去除效果．在最佳条件下,去除率分别高达85％、95％、87％和96％．出水COD，SS，NH3^-N和TP的平均浓度分别为5.8、1.4、1.6和0.9mg／L。作用机理分析表明．氯化偶合絮凝剂在处理过程中充分利用氧化絮凝协同作用．对胶体性物质和溶解性物质均有较好去除效果。     

微生物絮凝剂净化废水实验研究

采用微生物絮凝剂（ＭＢＦ）对于多种康２进行了净２化实验研究，结果表明，从活性污泥中分离出的Ｑ３－２菌株，由其产生的絮凝剂较曲霉产生的絮凝剂有更好的净化效果，最高絮凝率可达到９９．５％。将传统的无机絮凝剂碱式氯化铝与微生物絮凝剂配合使用不仅可以降低絮凝剂的总投加量，而且还可减少污泥量及污泥中铝残留量，这有利于絮凝后废渣的综合利用。     

改性壳聚糖絮凝剂处理印染废水的研究

研究了用壳聚糖与丙烯酰胺接枝共聚物做为絮凝剂对印染废水的絮凝处理,并与壳聚糖进行了絮凝效果比较,结果表明,其絮凝效果明显好于壳聚糖,在pH值为5～8范围内,PAC和接枝共聚物浓度分别为400mg·L-1和100mg.L-1时,其对印染废水的色度和COD去除率分别为最好,达到95.92%和76%。     

产絮菌H8絮凝条件的优化

在实验室条件下对产絮菌H8絮凝条件进行优化,得出所需最佳碳源为葡萄糖;最佳复合氮源为酵母菌+蛋白质;最佳生长环境PH为8;培养温度为10℃,培养时间为20h。最佳絮凝条件:高岭土PH为9.0;助凝剂为Ca2+,加入Ca Cl2的最佳浓度为0.04%,菌液投加量为2%,静沉时间5min。     

物化—生化法处理染料中间体生产废水

采用物化—生化法进行染料中间体生产废水的处理试验 ,物化法包括混凝、电解、Fenton氧化工艺过程。试验结果表明 :废水经物化及水解酸化工序后 ,可生化性显著提高 ,经好氧生化处理后的水质指标符合国家有关排放标准     

果胶在水处理中的研究进展

果胶作为一种功能多样的生物可降解天然高分子,日益成为研究的热点,并已应用于多种领域。本文综述了果胶在水处理中的研究进展,包括其作为重金属吸附剂和絮凝剂的研究,并对今后的发展前景进行了展望。     

微生物絮凝剂的研究及应用前景

对微生物絮凝剂的研究及应用进展进行综述,包括产生絮凝剂的微生物种类,微生物絮凝剂的提取纯化,微生物絮凝剂的絮凝机理,影响因素,研究动向以及微生物絮凝剂的应用。     

用超滤技术评价絮凝法处理制浆废水最佳COD去除效果的探讨

利用超滤的分离特性剖析制浆洗漂废水及其絮凝上清液的COD的分子量分布,以探讨、评价絮凝法处理此类废水所能达到的最佳COD去除效果。研究结果表明,洗漂废水中MW>10000与MW<3000的物质是COD值的主要组成部分,占76％;COD最佳去除效果为70.3％。     

絮凝沉淀法测定地表水中氨氮的方法改进

本文通过比较监测黑臭河流氨氮时人员比对的结果,对絮凝沉淀预处理过程的关键因素进行了改进。结果表明,直接在离心管中絮凝沉淀、离心、取样分析,精密度和准确度更好,而且方便快捷,值得推广。     

Investigating the coagulation of non-proteinaceous algal organic matter: Optimizing coagulation performance and identification of removal mechanisms

The removal of algal organic matter(AOM) is a growing concern for the water treatment industry worldwide. The current study investigates coagulation of non-proteinaceous AOM(AOM after protein separation), which has been minimally explored compared with proteinaceous fractions. Jar tests with either aluminum sulphate(alum) or polyaluminium chloride(PACl) were performed at doses of 0.2–3.0 mg Al per 1 mg of dissolved organic carbon in the p H range 3.0–10.5. Additionally, non-proteinaceous matter was characterized in terms of charge, molecular weight and carbohydrate content to assess the treatability of its different fractions. Results showed that only up to 25% of non-proteinaceous AOM can be removed by coagulation under optimized conditions. The optimal coagulation p H(6.6–8.0 for alum and 7.5–9.0 for PACl) and low surface charge of the removed fraction indicated that the prevailing coagulation mechanism was adsorption of non-proteinaceous matter onto aluminum hydroxide precipitates. The lowest residual Al concentrations were achieved in very narrow p H ranges, especially in the case of PACl. High-molecular weight saccharidelike organics were amenable to coagulation compared to low-molecular weight( 3 k Da)substances. Their high content in non-proteinaceous matter(about 67%) was the reason for its low removal. Comparison with our previous studies implies that proteinaceous and nonproteinaceous matter is coagulated under different conditions due to the employment of diverse coagulation mechanisms. The study suggests that further research should focus on the removal of low-molecular weight AOM, reluctant to coagulate, with other treatment processes to minimize its detrimental effect on water safety.