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。     

硝化反应及其控制因素

对硝化菌和亚硝化菌的特性进行了分析，并就碳源不足的废水实行短程硝化—反硝化脱氮的途径进行探讨。     

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。     

用液相催化法和脱硫除尘器脱除烟气中SO_2

在由旋风水膜和两块旋流塔板组成的处理气量为７５０ｍ￣３／ｈ的二级脱硫除尘器中，进行了用含催化剂Ｍｎ￣（２＋）的水溶液吸收ＳＯ_２的扩大试验。结果表明，在确定的条件下，脱硫率达到７３％，板效率为０．２５～０．２８。在同一设备中同时完成除尘与脱硫过程，设备投资少；以水为吸收剂，运行费用低；中性条件下吸收，长期运转不结垢，可靠性高。     

日本燃煤烟气中SO2处理技术

ＳＯ２是燃煤烟气中主要污染物质和形成酸雨的根源，因此烟气脱硫是大气污染控制的主要任务之一。日本在烟气脱硫方面具有先进与实用的技术，现介绍４种在日本已取得成功的处理方法。     

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.     

微生物絮凝剂的研究方法和进展

通过分析目前国内外微生物絮凝的研究现状，归纳了微生物絮凝剂的一般研究方法，综述了微生物絮凝剂的研究成果，提出了微生物絮凝剂研究中亟待解决的问题和建议。