居住区的交通噪声问题及防治方法

首先分析交通噪声对居住区声环境的影响及当前存在的问题，然后重点探讨相应的防治方法，特别是在居住区的规划中，以对噪声不敏感的建筑物和利用绿化隔离带形成小区周边的声屏障、小区道路系统防止城市交通穿越、加强住宅建筑设计中隔声构造处理等方面提出了具体的技术措施．     

化工区环境突发事件的数学预测及应对措施

通过对某市化工区环境污染物概况的调查,建立了污染风险模型,并且根据模型获得的结果确定了区域内的主要污染物。在此基础上提出了化工区环境突发事件的应对措施,为今后的应急监测提供的理论保证。     

石梁河水库水污染防治浅析

利用1996～2000年以来东海县环境监测站对石梁河水库水质的监测资料,对石梁河水库水质进行评价,进而分析了水库污染程度和原因,及水体变化趋势,提出了水污染防治的措施。     

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。     

实验室环境管理探讨

分析了我国实验室污染的现状和特点,指出了解决实验室污染问题的重要性、必要性,并从多个层面提出了加强实验室环境管理的对策措施。     

建筑施工噪声检测中存在的问题及对策

本文论述了在建筑施工噪声监测工作中影响监测结果的因素及相应对策。     

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.