类Fenton试剂对糖蜜酒精废水的正交试验研究

利用正交法设计实验,研究了类Fenton试剂对糖蜜酒精废水深度处理的效果。研究结果表明,类Fenton试剂深度处理糖蜜酒精废水的最优工艺参数,废液初始pH值为6.0,FeCl3.6H2O的加入量为3mL、3%H2O2的加入量为2mL、搅拌时间为5min,在此条件下,COD和色度的去除率分别为77.28%和90.35%。对COD去除率最主要的因素为FeCl3.6H2O的加入量,而对色度去除率最主要的因素为废液初始pH值。     

白龙港污水处理厂处理工艺比较分析

在对上海污水治理二期工程白龙港排放口水质进行监测分机和模拟处理试验的基础上，根据不同的排放标准，对白龙港污水处理厂处理工艺分别提出了不同方案并作了技术、经济比较分机。提出如果执行《污水综台排放标准》，可以采用化学法 悬浮粒子接触氧化法处理工艺；如果执行《城镇污水处理厂污染物排放标准》，可以采用A／0生物法处理工艺。     

在评价微污染水体中均值污染指数评价方法和活性污染指数评价方法的比较

针对均值污染指数评价方法在微污染水体环境质量评价上存在的缺陷,提出新的改进方法即活性污染指数法进行评价.根据吉林省白城市月亮湖水库2001～2005年监测结果,同时利用这两种方法进行评价,结果显示活性污染指数法评价白城市水库水质更客观和真实有效.     

脱硫塔滤料遗失原因分析及防治措施

脱硫塔是天然气处理的关键设备之一,设备完好性、适用性直接影响天然气脱硫效果和产品质量.南堡作业区在用脱硫塔13 台,2013 年投用以来,底排污腔存在积液,弱化脱硫效果,影响脱硫塔正常运行,脱硫塔内部构件腐蚀损坏后导致塔内滤料漏失,影响下游天然气处理设备和管道平稳运行,本文以NP3-2 转油站内脱硫塔滤料遗失成功治理为...     

响应面法优化测定水体中微囊藻毒素

针对水体中低浓度微囊藻毒素(MC-RR和MC-LR)的富集、淋洗、洗脱等前处理环节,采用单因素响应面优化法探讨微囊藻毒素前处理的最佳条件.结果表明:采用体积分数为25％的甲醇水溶液能够取得最佳淋洗效果,由One Factor设计优化得到体积分数为75％的甲醇水溶液作洗脱剂,MC-RR和MC-LR最佳回收率为89.4％和...     

Packaging glass contained in the heavy residual fraction refused by Portuguese Mechanical and Biological Treatment plants

Mechanical and Biological Treatment (MBT) is an important strategy to manage Municipal Solid Waste (MSW) in Europe. The presence of recyclable materials on MSW depends on different factors such as inefficiencies in the Municipal Solid Waste collecting schemes and to the low level of citizenship environmental education. Among other products, MBT plants produce a residual fraction, named here as heavy residual fraction, that contains a significant amount of packaging glass which in Portugal is currently landfilled. This material is not recycled because it is heavily contaminated with other materials, preventing its processing in Material Recovery Facilities (MRF).In this paper the characterization, including particle size and composition, of the residual fraction of six Portuguese MBT plants is presented. The relevant variables that determine the heavy residual fraction characteristics were identified. It was observed that the MBTr particle size distribution is different and depends mainly on the place on the flowsheet where the MBTr exits the process, which is determined by the type of biological process and by the aperture of the last screen where the product passes through. The content in glass varies from 33 to 83%. These values are mainly related with the upstream glass sorting and with the efficiency of the recovery of the organic fraction which is the glass main contaminant. The second main contaminant is “stones”.The quantity of glass contained in this product in all the plants that will be in operation in Portugal in 2014 was estimated. The work shows that if all the 48,000 of glass could be recovered the Portuguese recycling rate would increase by 4.4%.