电催化氧化处理垃圾渗滤液

以复极性固定床电解槽为反应器,利用CuO-CeO₂/γ-Al₂O₃多相催化剂取代传统反应器的绝缘填料,构建电催化氧化体系。采用XRD、SEM对CuO-CeO₂/γ-Al₂O₃进行表征,考察了槽电压、pH、气体流量和极间距等因素对垃圾渗滤液降解的影响。结果表明,该体系对渗滤液具有较好的催化降解效果。当槽电压为15.0V、pH为中性、气体流量为0.08m³/h、极间距为3.0cm时,垃圾渗滤液COD和NH⁺₄-N的去除率分别达到93.7%和100%。在处理垃圾渗滤液的过程中,体系运行稳定,经过20次反复实验,降解效果仍能维持在70%以上。在电催化氧化体系的作用下,垃圾渗滤液中的难降解有机污染物被直接矿化或降解为小分子有机物;而NH⁺₄-N则主要被氧化为氮气和水。     

粘红酵母处理味精废水的研究

对粘红酵母处理味精废水的条件进行研究。结果表明最佳处理条件为：进水COD浓度为10000mg/L,pH为6.16,发酵温度为32℃,发酵时间为72h,接种量为15%。该条件下可使味精废水COD的去除率达80.53%以上,利用发酵后的菌体,可提取单细胞蛋白,提取油脂,具有一定的应用潜力。     

生物滤池废水处理过程数学模型的求解和验证

利用基于定层数、定密度和变层厚的差分解法,求解多组分、多物种生物滤池模型（CM—MDMB）,并用试验实例检验了模型（CMMDMB）对生物滤池内生物膜厚度和微生物组分结构以及滤池处理的模拟效果．检验的结果表明,模型（CMMDMB）能有效地模拟生物滤池的运行效果．     

污水处理厂出水维甲酸X受体干扰效应研究

应用重组维甲酸X受体(RXR)基因酵母筛选南方某污水处理厂进水、不同工艺出水的维甲酸干扰活性;结合大鼠肝均浆(S9)体外代谢方法,检测样品间接维甲酸干扰活性.结果表明:进水、出水样品均不能诱导RXR介导酶活性,但在高富集倍数下,样品与空白对照相比显著抑制9-顺维甲酸诱导酶活性,表现出维甲酸拮抗效应;在添加S9体外代谢活化后,所有样品均检出类维甲酸干扰活性,部分样品还检测出抗维甲酸活性,表明城市污水样品中存在大量具有类/抗维甲酸干扰活性的化合物.研究结果证实,现行处理工艺对类/抗维甲酸干扰物有一定的去除效果;重组基因酵母结合S9体外代谢活化体系可用于水环境样品类/抗维甲酸干扰效应的快速筛选.     

A gas chromatography/mass spectrometry method for the simultaneous analysis of 50 phenols in wastewater using deconvolution technology

Phenolic compounds exist widely in the influents and effluents of sewage treatment plants (STPs) and most are un-regulated. In this study, a gas chromatography-mass spectrometry (GC-MS) method for the simultaneous analysis of 50 phenolic compounds in wastewater was developed. Deconvolution technology was used to identify contaminants that are covered by co-extracted materials. A mass spectral library containing all 50 silylated phenolic compounds was first established and used for deconvolution. Twelve typical phenolic compounds were selected to optimize the sample preparation procedures. Solid-phase extraction using a C18 cartridge coupled with an HLB cartridge was used for pre-concentration and dichloromethane was used for elution. The solutes were derivatized and analyzed by GC-MS. The blank and matrix spike recoveries ranged from 57.46% to 136.4% and 47.87% to 114.8%, respectively. Method detection limits ranged from 3.64 to 97.64 ng L⁻¹. The relative standard deviations of all the recovery experiments were lower than 13.6%. The instrument limits of quantification ranged from 0.7 to 87.7 pg. The method has been applied to analyze the influents and effluents of 5 Chinese STPs. Except for regulated phenolic compounds (phenol and 2,4,6-trichlorophenol), three un-regulated phenolic compounds, including 2-chlorophenol, 2,5-dichlorophenol and 2,4-dichloro-3-ethyl-6-nitrophenol were identified in the effluent wastewater. The detected concentrations of un-regulated phenolic compounds could possibly cause environmental effects, indicating that immediate attention is required to prevent complications.     

废水胁迫条件下生态沟渠盘培多花黑麦草的生长适应性

针对浙江省杭嘉湖区域河道水体富营养化严重的问题,在水网平原水稻田进行生态沟渠降污试验.通过构建以盘培多花黑麦草为主要内容的生态沟渠,研究其在处理养猪场废水和生活污水条件下生长和生理指标响应,确定在不同条件下盘培多花黑麦草的逆境适应性.试验结果表明,多花黑麦草植株在处理养猪场废水时,其生长势、生长量以及活性氧清除系统的P...     

好氧颗粒污泥的快速驯化及其动力学研究

报到了1种好氧颗粒污泥的快速驯化方法,通过向序批式反应器中投加Phanerochaete sp.HSD的厚垣孢子,在合成废水处理过程中,7d内便可成功驯化出好氧颗粒污泥.好氧颗粒污泥基质降解动力学参数Ks为757(mg·L-1),Vmax为1.1 h-1;生长动力学参数Y为0.177 kgMLVSS/COD,Kd为0....     

絮凝过滤在石化废水深度处理中的应用研究

通过小试实验,比较分析无机、有机及复合絮凝剂对某石化企业污水处理厂出水的絮凝效果,通过处理效果和成本分析,筛选得到了聚合氯化铝-聚二甲基二烯丙基氯化铵复合絮凝剂(PAC-PDMDAAC).该絮凝剂在投加量为50 mg.L-1时,浊度最大去除率为72.4%;在实验投加量范围内,CODC r去除率均在40%以上;投加量为40 mg.L-1时,最大去除率达59.3%.在小试的基础上,将该絮凝剂应用于中试实验,分析监测不同构筑物对CODC r的去除效果等参数,确定了合理的投药量、排泥量、反冲洗时间、沉淀时间、处理水量等指标.     

IC厌氧反应器处理马铃薯淀粉废水特征研究

采用IC(厌氧内循环)法,通过自行研制的IC反应器,研究了马铃薯淀粉废水处理效果,结果表明:初次启动历时25 d,二次启动仅仅历时6d,COD去除率均可保持在80％以上;反应器所能耐受的最大有积负荷为40.57 kg COD/(m3·d);最经济有效的停留时间为5h,最佳负荷为28.75 kg COD/(m3·d).     

改良型A2/O工艺处理低碳源城市生活污水

以某污水处理厂的实际运行情况为例,研究改良型A2/O工艺处理低碳源城市生活污水的效果.运行结果表明,改良型A2/O工艺对化学需氧量(CODcr)、氨氮(NH3-N)和总磷(TP)的去除效果良好,CODcr、NH3-N和TP的平均去除率分别为66.7%、66.5%和70.6%,出水CODcr<40 mg/L,NH3-N<...