腈纶废弃物制备高分子絮凝剂新工艺

作者叙述了以腈纶废弃物为原料，进行催化还原、羧甲基化反应，制备了高分子絮凝剂。研究了反应条件对产物的影响，通过对一系列污水进行处理比较，证明该种工艺与其他工艺相比具有较好的效果。     

水样中挥发酚保存剂的优化研究

现在使用的挥发酚保存剂是磷酸和硫酸酮，磷酸既有腐蚀性，又不便携带，给采样带来许多麻烦，研究表明：用氢氧化钠作为保存剂，采样时携带方便，操作简单，监测结果靠，是一种优于磷酸和硫酸铜的保存剂。     

城市生活垃圾厌氧消化技术

随着我国经济的发展。城市生活垃圾污染越来越严重。本文阐述了城市生活垃圾生物处理技术以及其特点。着重分析说明了厌氧消化的原理以及处理生活垃圾的影响因素，最后介绍了几种国外常用的厌氧处理工艺。     

甘肃火电机组二氧化硫控制措施探讨

针对甘肃火电机组燃煤煤质特点，比较系统地分析了国内几种常用脱硫工艺在甘肃地区应用的可行性，并就选择二氧化硫控制措施时应注意的几个因素进行了分析和探讨。     

动力学光度法比均定中变换同时测定水中 BrO 3 与 IO 3

应用动力学光度法,在不经分离的条件下,采用比均定中变换同时测定水样中BrO-3与IO-3,优化了试验条件,试验了不同干扰离子对测定的影响.BrO-3与IO-3在0.10 mg/L～3.50 mg/L范围内线性关系良好,检出限分别为0.01 mg/L与0.02 mg/L,RSD分别为2.8%与2.0%,回收率为97.2%～104%.     

UNITANK工艺在中、小型污水处理站的应用

介绍了UNITANK工艺的基本构造、运行方式和技术特点及在新疆盐湖制盐有限公司生活污水处理站的应用实例，经过两年的实际运行表明，该工艺应用于中、小型生活污水处理站技术、经济合理，易于管理操作，具有良好的应用前景。     

专家系统在废水生物处理操作和控制中的应用

本文介绍了国外近二十年来专家系统在废水生物处理工艺控制领域的应用及开发的典型系统，分析了废水生物处理工艺难于控制的原因，各类系统的结构和特点及目前废水处理专家系统系统的不足，探讨了废水生物处理专家系统今后深入研究的问题及方向。     

型腔电火花粗加工工艺参数优化方法

针对型胶电火花粗加工工艺参数的选择问题,提出一种通用的三维复杂型腔粗加工工艺过程优化的方法,可以实现较高主产率.     

不锈钢壳体的冷挤压工艺及模具设计

壳体是机械中广泛使用的重要零件之一.采用冷挤压工艺可提高质量、降低成本.对不锈钢壳体成形工艺及模具设计作了详细讨论.     

Removal of high concentrated ammonia nitrogen from landfill leachate by landfilled waste layer

The landfill of municipal solid waste(MSW) could be regarded as denitrification reactor and involved in ammonia nitrogen biological removal process. In this research, the process was applied to municipal solid waste collected in Shanghai, China, which was characterized by high food waste content. The NH4^ removal efficiency in the system of SBR nitrifying reactor followed by fresh and matured landfilled waste layer in series was studied. In the nitrifying reactor, above 90% of NH4^ in leachate was oxidized to NO2^- and NO3^- . Then high concentrated NO2^- and NO3^- were removed in the way of denitrification process in fresh landfilled waste layer. At the same time, degradation of fresh landfilled waste was accelerated. Up to the day 120, 136.5 gC/(kg dry waste) and 17.9 gN/(kg dry waste) were converted from waste layer. It accounted for 50.15 % and 86.89 % of the total carbon and nitrogen content of preliminary fresh waste, which was 4.42 times and 5.17 times higher than that of reference column respectively. After filtering through matured landfilled waste, BOD5 concentration in leachate dropped to below 100 mg/L, which would not affect following nitrification adversely. Because the matured landfilled waste acted as a well methanogenic reactor, 23% of carbon produced accumulatively from fresh landfilled waste degradation was converted into CH4.