炭素焙烧沥青烟气治理

采用生石灰吸附袋式除尘法治理炭素焙烧窑沥青烟气 ,具有很好的效果。治理前烟尘 114 8.7mg/ Nm3,沥青烟 480 .5mg/ Nm3,苯并 (a)芘 3 .462 mg/ Nm3;治理后烟尘 12 .8mg/ Nm3,沥青烟 11.0 mg/ Nm3,苯并 (a)芘 3 .0× 10 - 4m g/ Nm3。从运行效果来看 ,烟气的充分冷却和选用生石灰做吸附剂是治理成功的关键。     

Effect of NOM characteristics on brominated organics formation by ozonation

In this study, organic fractions, namely, humic acid, fulvic acid, hydrophobic base and neutral, and hydrophilic acid, base, and -neutral, were extracted from source water. First, the characteristics of the organic fractions, such as carboxylic acidity, phenolic acidity, ultraviolet absorbance, and aromatic content, were analyzed. Further, a systematic study was carried out to the by-products obtained when organic fractions, to which various amounts of bromide had been added, were oxidized with ozone. Samples after ozonation were analyzed for several brominated organics. The results indicate that the characteristics of the aquatic organic matter, including carboxylic/phenolic acidity, aromatic/aliphatic content, and ultraviolet absorbance, appear to affect the formation of halogenated organics. In general, hydrophobic organics having higher phenolic acidity, aromatic content, and ultraviolet absorbance have higher ozone consumption and produce higher concentrations of brominated organics than hydrophilic organics. It was also found that humic acid demonstrated the highest bromoform (CHBr(3)), dibromoacetic acid (DBAA), and 2,4-dibromophenol (2,4-DBP) formation, whereas hydrophilic neutral produced less CHBr(3) and 2,4-DBP than the rest of the organic fractions but produced the highest amount of dibromoacetone (DBAC) and dibromoacetonitrile (DBAN).     

农村生活污水分散式处理技术浅析

综述了农村生活污水对环境的污染问题,分析了利用分散式处理方式来处理农村生活污水的优势,并介绍了国内外农村生活污水处理的技术,着重介绍了我国厌氧技术应用的现状并分析了其发展。     

碱渣的综合治理与利用

碱渣的污染问题一直制约着纯碱企业的发展,是氨碱厂的一大技术难题。碱渣本身的物理化学特性使其能够应用于建筑、化工、农渔业、环保等方面。本文对近年来国内外碱渣的治理与利用技术进行了总结和评速。     

浅析生态塘系统在污水处理中的应用

根据目前污水处理的迫切性和必要性,主要介绍了生态塘处理系统的原理,工程实践中常见的典型工艺流程,工艺特点及优点,并结合山东东营市的污水生态处理工程运行实践,分析了其运行效果、可靠性及经济性。     

水样中有机磷的微波消解

采用微波消解系统对水样中有机磷进行消解,考察了消解时间、功率等不同实验条件对样品微波消解的影响;并将该法与总磷测定的常规消解方法进行了比较,结果表明,微波消解法简便、快速、准确、可靠     

Chemical industry wastewater treatment

Treatment of chemical industrial wastewater from building and construction chemicals factory and plastic shoes manufacturing factory was investigated. The two factories discharge their wastewater into the public sewerage network. The results showed the wastewater discharged from the building and construction chemicals factory was highly contaminated with organic compounds. The average values of chemical oxygen demand (COD) and biochemical oxygen demand (BOD) were 2912 and 150 mgO₂/l. Phenol concentration up to 0.3 mg/l was detected. Chemical treatment using lime aided with ferric chloride proved to be effective and produced an effluent characteristics in compliance with Egyptian permissible limits. With respect to the other factory, industrial wastewater was mixed with domestic wastewater in order to lower the organic load. The COD, BOD values after mixing reached 5239 and 2615 mgO₂/l. The average concentration of phenol was 0.5 mg/l. Biological treatment using activated sludge or rotating biological contactor (RBC) proved to be an effective treatment system in terms of producing an effluent characteristic within the permissible limits set by the law. Therefore, the characteristics of chemical industrial wastewater determine which treatment system to utilize. Based on laboratory results engineering design of each treatment system was developed and cost estimate prepared.     

Using chemical models for evaluating the geochemical confinement capacity of a geological barrier application to the Centre de Stockage de l'Aube (France)

The feasibility of using a chemical reaction-based approach for evaluating and modelling the role of adsorption reactions in determining the geochernical confinement capacity of natural geological barriers is being studied as part of an on-going R & D programme. The confined superficial aquifer underlying the Centre de Stockage de l'Aube facility, a geological barrier for this site, has been used as a case study with the following aims. First, development of a site characterisation protocol and demonstration of its use to determine the principal geochemical characteristics of aquifer materials using batch experiments and to represent the information obtained in terms of a chemical model. The experimental results obtained for Ni²⁺ partitioning as a function of total Ni, pH, total Ca and total solid can be satisfactorily represented in terms of reactions with an ion exchange site and a single amphoteric surface hydroxyl site with ferrihydrite reaction constants. A second objective is the incorporation of the reactions in a coupled geochemistry/transport code, and to verify the applicability of the coupled code predictions for Ni²⁺ mass transfer by comparison with the results obtained during column tracer experiments. The breakthrough curve and equilibrium solid phase Ni loading, predicted by a one-dimensional coupled model for a column tracer experiment, agree closely with observed data.Additional studies are underway to reduce model conditionality, to extend the adsorption model to other analogue cations and anions, to incorporate the effect of natural organic matter and to take into consideration precipitation/dissolution of amorphous Fe surface phases.     

沈阳市工业固体废物排放总量控制

阐述了沈阳市工业固体废物基数核定方法及结果，总量控制基本原则，控制目标，控制措施，控制效果．     

固体废物管理技术进展

概述了固体废物管理技术近年来的主要进展,这些进展包括,固体废物从“摇蓝到坟墓”的全过程管理,即从废物产生到收集、运输贮存,再循环,再利用,处理直至最终处理过程所涉及到的：废物最小量化管理技术;废物转移跟踪管理中产生者,运输者,处理处理者,主管当局的职责、主管当局的职责,义务和管理方式;废物经营者向主管当局申请许可证的程序和申请。时,对废物交换制度和废物管理信息系统也作了概要介绍。