滇池水葫芦规模化控养生态环境效应分析

水葫芦规模化控养是"十二五"期间滇池治理的重要措施之一。首先介绍了滇池水葫芦规模化控养现状,比较了滇池草海和外海在水葫芦控养前后水质的变化情况,指出滇池水葫芦规模化控养对草海水体生态恢复效果显著,可以在滇池选择适宜水葫芦生长的水域继续扩大水葫芦控养面积,使水葫芦在滇池生态治理中发挥更大的作用。     

以废气为热源生产二水氯化钙的新工艺

针对在氯化法生产钛白粉的过程中产生的大量高热值废气和氯化钙废水,提出以废气为热源生产二水氯化钙的新工艺。以焚烧的方式处理氯化尾气,将产生的热量用于浓缩蒸发氯化钙废水,生产工业级二水氯化钙产品,达到以废治废的目的。不仅处理了工业废气和废水,在节约能源的同时创造了一定的经济效益。     

Adsorption of 2-mercaptobenzothiazole from aqueous solution by organo-bentonite

The adsorption behavior of 2-mercaptobenzothiazole onto organo-bentonite was investigated.Natural bentonite from Gaozhou in Guangdong Province,China was collected.Organo-bentonite was prepared by intercalation of cetyltrimethyl ammonium bromide into the natural bentonite.The physicochemical properties of the prepared organo-bentonite were characterized by X-ray diffraction,N2 adsorption-desorption isotherm and Fourier transform infrared spectroscopy.The results showed that montmorillonite is the main component of the natural bentonite.The basal spacing of the natural bentonite is 1.47 nm,which increased to 1.98 nm on intercalation with cetyltrimethyl ammonium bromide.Moreover,both the surface area and pore volume increased with intercalation.Clear CH2 stretching(3000-2800 cm-1) and scissoring(1480-1450 cm-1) modes of the intercalated surfactants were observed for organobentonite.Compared with the pseudo first-order kinetic model,the pseudo second-order kinetic model is more suitable to describe the adsorption kinetics of 2-mercaptobenzothiazole onto organo-bentonite.The adsorption capacity of 2-mercaptobenzothiazole onto organo-bentonite increased with increasing initial concentration of 2-mercaptobenzothiazole,but decreased with increasing adsorbent dosage.The adsorption isotherm of 2-mercaptobenzothiazole onto organo-bentonite fits well with the Langmuir model.The maximum adsorption capacity of organo-bentonite for 2-mercaptobenzothiazole was 33.61 mg/g,indicating that organo-bentonite is a promising adsorbent for 2-mercaptobenzothiazole.     

Entrepreneur environment management behavior evaluation method derived from environmental economy

Evaluation system can encourage and guide entrepreneurs, and impel them to perform well in environment management. An evaluation method based on advantage structure is established. It is used to analyze entrepreneur environment management behavior in China. Entrepreneur environment management behavior evaluation index system is constructed based on empirical research. Evaluation method of entrepreneurs is put forward, from the point of objective programming-theory to alert entrepreneurs concerned to think much of it, which means to take minimized objective function as comprehensive evaluation result and identify disadvantage structure pattern. Application research shows that overall behavior of Chinese entrepreneurs environmental management are good, specially, environment strategic behavior are best, environmental management behavior are second, cultural behavior ranks last. Application results show the efficiency and feasibility of this method.     

低温条件下污水处理运行研究

低温是造成寒冷地区冬季生活污水生化处理效果差的主要原因。当温度降低至4cC左右时,活性污泥中大多数微生物的生长活性受到抑制,只有少数的耐冷微生物可以存活下来并保持一定的活性。本课题组以往的研究结果证明：在我国北方地区,完全可以分离到在低温下高效降解污水中有机物的耐冷细菌。通过投加耐冷茵可使污水的去除效率大大提高。但由于投加的耐冷茵的流失等原因,必须隔一定时间再次投菌,既费时费力,又增加投资。     

气相色谱法同时测定废气中的甲苯和丙酮

建立了用气相色谱法测定废气中甲苯和丙酮的方法.废气中甲苯和丙酮活性炭吸附,二硫化碳解吸,NNOWAX毛细管柱分离,直接进样分析,氢火焰离子化检测器检测,时间定性,峰面积定量,其甲苯回收率为94.3％ ～ 103.4％、丙酮回收率为93.1％ ～ 102.5％,当采样体积为30L,甲苯和丙酮最低检出质量浓度为0.001 mg/m3.本方法前处理简便,分离度好干扰少,分析灵敏度高,有机试剂使用量少,满足环境分析要求.     

“十一五”期间通辽市环境质量存在的主要问题及成因

本文通过对＂十一五＂期间通辽市环境质量监测数据的统计分析,从污染源和环境质量的关系得出存在的问题,从自然环境要素与生态环境两个角度总结＂十一五＂期间存在的问题。通过对环境质量的问题分析,寻找产生这些问题的原因,从而为改善环境质量提供解决的途径。     

广西木薯淀粉产业环境保护现状及对策研究

广西是我国最大的木薯产地,同时也是我国最大的木薯淀粉生产基地。随着国家环境保护要求的日益提高,木薯淀粉行业环境保护与可持续发展的压力也进一步加大。本文基于淀粉企业生产现状调查的基础上,剖析了广西木薯淀粉企业污染治理及清洁生产现状,找出了原料缺口大、清洁生产水平较低、产品结构单一、废水污染严重等问题,并提出了相应的对策与建议:一是推广良种良法,建立高产优质木薯原料基地;二是以环境资源倒逼机制推动木薯淀粉产业调整升级;三是推行清洁生产,发展循环经济;四是加强淀粉废水处理技术研发和推广应用,以期从根本上解决广西木薯淀粉产业资源和环境的可持续发展问题。     

GB/T 28001-2011标准术语和定义的认知

对GB／T28000《职业健康安全管理体系》系列国家标准的术语和定义进行了对比分析。     

中国环境风险现状及发展趋势分析

基于国内2000-2009年以来环境污染事故统计资料,深入分析了中国现阶段环境风险类型、事故高发区域、事故损失、环境风险事故诱因等特征,并对其环境风险演变趋势进行了判断。新时期中国经济增长方式处于转变阶段,以布局型环境隐患和结构型环境风险为首要威胁,风险类型更加复杂化,事故影响范围进一步扩大,由于居民消费转型与科技发展带来的新型环境风险更是不可预知,环境风险压力进一步增大。