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介绍磷肥工业水污染物的环境危害,分析我国现有《磷肥工业水污染物排放标准》和相关国内外水污染物排放标准,结合国家对环境保护的要求和磷肥工业产业政策和水防治技术,对新标准修订的原则、框架及对水污染物指标的选取和排放限值确定进行了分析。新标准实施将有显著的环境效益,可推动磷肥工业可持续发展。 相似文献
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我国磷肥工业废水处理技术现状及建议(待续) 总被引:2,自引:0,他引:2
介绍了我国磷肥工业废水处理技术现状,对存在的主要污染问题进行了分析,对照正在修订的磷肥工业水污染物排放标准,结合磷肥工业含氟、磷废水排放特点和现场调查所了解的攻关技术,提出了今后对氟、磷水污染物控制的建议. 相似文献
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4 磷肥工业水污染物排放浓度限制值 由环境保护部科技标准司组织制定、中国环境科学研究院和中国石化集团南京设计院编制的国家环境保护标准--<磷肥工业水污染物排放标准>(送审稿初稿,以下简称<标准>)征求意见的工作阶段目前已经结束.新标准规定,纳入监控的磷肥产品包括FMP、SSP、MAP或:DAP、NP、GTSP、复混肥(包括复合肥和掺和肥)及生产磷肥所需的中间产品H3PO4和其他副产品.对现有企业和新建企业实行不同的污染物控制限值.自2009年7月1日起至2011年12月31日止,现有企业执行表7的水污染物排放限值,新建企业执行表8的限值;自2012年1月1日起,现有企业执行表8的限值. 相似文献
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《煤炭加工与综合利用》2014,(4):21-21
<正>环保部近日审议并原则通过锅炉大气污染物、生活垃圾焚烧污染物、工业污染物以及非道路移动机械用柴油机污染物的排放新标准。据悉,新标准经进一步修改后,将由环保部同国家质检总局联合发布实施。环保部表示,为防治大气污染,将对现行的《锅炉大气污染物排放标准》进行修订和完善。修订后的《锅炉大气污染物排放标准》增加了燃煤锅炉氮氧化物和汞及其化合物的排放限值,规定了大气污染物特别 相似文献
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<正>(接上期)5.2标准规范指南的制修订(1)氯碱工业污染物排放标准该标准是由环境保护部委托中国环境科学研究院组织制订的,是对《烧碱、聚氯乙烯工业水污染物排放标准》(GB 15581-95)的修订,规定了氯碱工业企业水和大气污染物排放限值、监测和监控要求,规定了水和大气污染物特别排放限值。本次修订的主要内容增加了大气污染物排放控制要求、调整了水污染物排放控制项目、收紧了水污染物排放控制要 相似文献
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An equation was obtained for evaluating the thermodynamic affinity of a disperse dye for a fibre. Quantities Δh
D
and K
D
, which are functions of the composition of the dye bath, temperature, and state of the fibre material, can characterize the
change in the affinity of the dye for the fibre when the dyeing conditions are varied. 相似文献
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针对汽车用塑料灯头的结构特点与工作环境,分析了灯头结构的复杂性、材料性能,注身工艺条件、合理地设计了注射成型模具,采用了组合式下模型芯来完成内孔的复杂成型,同时采用组合式侧抽芯来完成外侧面的卡钩与上面的穿线孔的成型,简化了模具的结构。 相似文献
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A procedure was developed that examines the effectiveness of nickel catalysts for the hydrogenation of fatty nitriles to amines.
Rates of reaction, selectivity, and olefinic reduction were the parameters studied. The procedure can be used for new catalyst
screening and is ideally suited for quality assurance testing of production catalysts. It involves the reduction of nitriles
to amines at 410°F (210°C) and 500 psig using a .2% Ni loading level. A mixture of primary and secondary amines is obtained
which is characteristic of the catalyst’s selectivity. Both sponge and supported nickel catalysts were tested using tallow
nitriles as the feedstock. 相似文献
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A study of fertilization practices in intensively grown tomatoes, leading to a projection of developments in fertilizer usage is presented. Targets of optimal fertilization strategy were defined as follows: maximize fruit yield; maximize fruit quality; minimize environmental pollution with fertilizers; minimize corrosion of the fertilizer distribution system; minimize expenses on fertilizers. Information was gathered by literature searches and by personal interviews and visits to research institutes and growers.Rechecking of some fertilization practices for greenhouse tomatoes grown in detached media is proposed. The review indicates that the following should be rechecked: ammonium/nitrate ratio in fertilizer formulations; use of urea in fertilizer solutions; levels of phosphates applied; levels of sulphate applied; simple iron salts vs. chelated iron application; osmotic potential (OP), expressed as electrical conductivity (EC), of the nutrient solution at various growth stages.EC, pH and estimated prices of fertilizer solutions were calculated and presented in tables. 相似文献