臭氧催化氧化去除水中聚乙烯醇

以Fe2+、Mn2+和Cu2+为催化剂,运用臭氧催化氧化技术对水中聚乙烯醇进行去除实验。结果表明:与单独臭氧氧化比较,臭氧催化氧化对聚乙烯醇的去除效果明显提高,且与催化剂浓度相关,去除效果随Fe2+浓度的增大而提高,在35 mg/L左右达最大值,去除率为85%;随Mn2+浓度的增大而降低,最佳含量约为5 mg/L,去除率为54%;加入Cu2+催化剂,在35 mg/L时去除率为5%,其他剂量时去除效果不明显。3种催化剂投加量同为35 mg/L,反应时间3 h条件下,去除效果对比为:Fe2+ > Cu2+ > Mn2+。     

布袋除尘器和活性炭滤布对烟气中二噁英类的去除效果

通过实验研究了布袋除尘器、活性炭滤布吸附器以及二者的组合对小型垃圾焚烧炉烟气中二噁英类的去除效果.在炉膛温度850℃～900℃的条件下,3种方法对烟气中二噁英类的去除率分别为39.7%、61.9%、93.4%采用布袋除尘器+活性炭滤布吸附器能够在降低运行费用的同时使二噁英类的排放符合国家标准     

Removal of clofibric acid from aqueous solution by polyethylenimine-modified chitosan beads

Polyethylenimine （PEI）-modified chitosan was prepared and used to remove clofibric acid （CA） from aqueous solution. PEI was chemically grafted on the porous chitosan through a crosslinking reaction, and the effects of PEI concentration and reaction time in the preparation on the adsorption of clofibric acid were optimized. Scanning electron microscopy （SEM） showed that PEI macromolecules were uniformly grafted on the porous chitosan, and the analysis of pore size distribution indicated that more mesopores were formed due to the crosslinking of PEI molecules in the macropores of chitosan. The PEI-modified chitosan had fast adsorption for CA within the initial 5 h, while this adsorbent exhibited an adsorption capacity of 349 mg· g^-1 for CA at pH 5.0 according to the Langmuir fitting, higher than 213 mg· g^-1 on the porous chitosan. The CA adsorption on the PEI- modified chitosan was pH-dependent, and the maximum adsorption was achieved at pH 4.0. Based on the surface charge analysis and comparison of different pharmaceu- ticals adsorption, electrostatic interaction dominated the sorption of CA on the PEI-modified chitosan. The PEI- modified chitosan has a potential application for the removal of some anionic rnicropollutants from water or wastewater.     

陶瓷厂喷雾干燥塔白烟形成的机理及解决措施

针对陶瓷厂烟囱冒“白烟”,造成环境污染的现象,提出了“降温法”和“升温法”两种治理方案,并对“升温法”方案建立了数学模型,通过数值求解,得到需要升高的最小临界温度值。计算结果已用于陶瓷厂烟气治理中,验证了其正确性。     

平原河网地区非点源污染分析

在流域水环境中，非点源污染已成为首要污染源，其研究正成为业内人士关注的重要课题。文中分析了平源河网地区非点源污染研究的现状、进展和防治途径。     

磁处理水的处理作用及其影响分析

通过磁场在工业废水、城市污水和饮用水处理中的应用，对磁场处理水的物理作用原理及其影响因素进行了分析。指出了磁场在水处理中的应用优势和磁场效应与各种水处理技术共同作用实现多种水处理功能的技术前景。     

北山公婆泉斑岩型铜矿床地球化学特征研究

公婆泉铜矿是北山地区最大的铜矿床 ,也是我国西北地区一个非常重要的斑岩型铜矿床。矿体主要产在花岗闪长斑岩和英安斑岩体内。本文对含矿斑岩体、蚀变岩和铜矿石的主元素、稀土元素、微量元素、铅同位素和Sm Nd同位素地球化学特征进行了较为系统的综合分析研究 ,旨在查清含矿斑岩体的形成背景和成岩物质来源 ,以及含矿斑岩体与成矿之间的内在联系。研究结果表明 ,英安斑岩和花岗闪长斑岩体形成于岛弧环境 ,他们具有相同的成岩物质来源 ,是上地幔和下地壳物质混熔产物。花岗闪长斑岩和英安斑岩均具有较高的Cu背景值 ,可为后期Cu的富集提供充足的物质基础。铅和钕同位素数据表明 ,成矿物质以幔源为主 ,主要来自于含矿的斑岩体。     

Research and practice on fluctuation water injection technology at low permeability coal seam

In order to solve the problem of poor affusion effect on low permeability coal seam, the paper analyzes the micro process of the coal seam water infusion in wetting coal and determines the main factors affecting coal seam water infusion. The permeability of the NO.3 coal seam in east working face of Xingcun coal mine by MTS815.03 servo-controlled rock mechanical test system has been tested. Results show that when the peak stress in coal sample specimens reaches 48.53 MPa, permeability ranges from 0.5158 to 2.9576 × 10⁻⁸ Darcy, and it means that the coal seam is low in permeability and difficult in water injection. Based on the characteristics of low permeability and geostress situation, efficient fluctuation water injection technology with permeable agent and relevant process parameters have been designed. The surface tension of the permeable agent developed here is 31.18 m N/m when mass concentration reaches 0.05%. The permeable agent can permeate into 2 cm thick coal layer completely in 10 s, thus improving the wettability of water effectively and the water injection pressure fluctuates between 7 MPa and 25 MPa. The application of the technique in the 3rd coal seam in east working face of Xingcun coal mine shows not only single-arch injection experienced a significant increase on average, from no more than 10 m³ to 63.3886 m³, but also the effect of dust fall, cooling and rock burst prevention is remarkable.     

干电池中重金属的浸出特性及危害研究

所有的家用干电池中都或多或少含有不同种类的重金属。这些重金属进入环境并达到一定含量后 ,其毒性对人体健康和生物圈会造成潜在危害。而电池进入填埋场后是否会发生壳体破损并造成重金属污染 ?本文针对废干电池进入填埋场后 ,重金属的释放和污染情况进行了试验研究。结果表明 ,电池壳体可有效阻止电池中重金属的释放 ,即便是在破损后对渗滤液中重金属的贡献也是微乎其微的。