人工湿地系统在我国污水处理中的应用

介绍了人工湿地系统在我国污水处理中的应用现状，认为设计方案、基质、水生植物的选用以及微生物降解等方面，是决定人工湿地系统净化效果的主要因素，最后指出了目前该法在全国各地推广的难度、存在的问题及解决这些问题的途径。     

Influence of osmotic distillation on membrane absorption for the treatment of high strength ammonia wastewater

Osmotic distillation (OD) was found to be a coupled process in membrane absorption (MA) for the treatment of high strength ammonia wastewater. As a result, ammonia could not be concentrated in absorption solution(AS) as expected. The inhibition of the coupled OD in MA process was investigated as well as various factors affecting the inhibition. The results indicated that the coupled OD can be effectively inhibited by heating concentrated solution and cooling dilute solution. It was also found that experimental minimum inhibition temperature difference(MITD) between concentrated and dilute solutions was different when using polyvinylidene fluoride(PVDF) and polypropylene(PP) membranes respectively, which could be ascribed to material properties, such as OD and membrane distillation (MD) coefficients of the membranes. Experimental MITDs were found to be higher than theoretical MITDs which were calculated using a simplified method.     

Clomazone dissipation, adsorption and translocation in four paddy topsoils

IntroductionClomazone,(2 [(2 chlorophenyl)methyl ] 4 ,4 dimethyl 3 isoxazolidinone) ,isasoil appliedisoxazolidinoneherbicideproducedbyFMCCorp .Itisintroducedforannualgrassandbroad spectrumweedsinsoybeans(Rani,1998;Vyas,2 0 0 0 ) .Itisalsocurrentlyregis…     

Adsorption mechanism of phenolic compounds from aqueous solution on hypercrosslinked polymeric adsorbent

The adsorption of two phenols, namely, phenol and salicylic acid(SA) onto a water-compatible hypercrosslinked polymeric resin (NJ-8) were studied in terms of pseudo-second-order and first order mechanisms for chemical sorption as well as an intraparticle diffusion mechanism process. Kinetic analysis showed that the intraparticle diffusion process was the essential rate-controlling step. The activation energies of sorption have also been evaluated with the pseudo-second-order and intraparticle diffusion constants, respectively. Adsorption equilibrium data were well fitted by the Langmuir, Freundlich and Redlich-Peterson isotherms. Adsorption was exothermic and basically of a type of transition between physical and chemical character. The sorption capacity was higher for SA due to its more hydrophobic. Phenol has a higher adsorption enthalpy since it could form stronger hydrogen bonding on NJ-8.     

Rapid treatment of atrazine-contaminated water by nickel/iron bimetallic system

The utility of nickel/iron in the remediation of atraz.ine-contaminated water was investigated. The experimental results showed that nickel/iron had effective catalytic activity in dechlorinating atraz.ine under acidic conditions. The dechlonnation reaction approximately followed the first-order kinetics under the experimental conditions( nickel/iron: 1.0 g/250 ml: Ca~r~ = 20.0 mg/L), the reaction rate increased with decreasing pH value of the reaction solution and increasing the proportion of Ni: Fe within 2.95 %. For condition with 2.95% nickel/iron, the reaction rate constants were 0.07518( R = 0.9927), 0.06212( R = 0.9846) and 0.00131 min^-1 ( R = 0.9.565) at pH = 2.0, 3.0 and 4.0, respectively. HPLC analysis was used to monitor the decline of atraz.ine concentration.     

Treatment of anthraquinone dye wastewater by hydrolytic acidification-aerobic process

Experiment on microbial degradation with two kinds of biological process, hydrolytic acidification-aerobic process and aerobic process was conducted to treat the anthraquinone dye wastewater with CODc, concentration of 400 mg/L and chroma 800. The experimental result demonstrated that the hydrolytic-aerobic process could raise the biodegradability of anthraquinone dye wastewater effectively. The effluent CODc, can reach 120-170 mg/L and chroma 150 which is superior to that from simple aerobic process.     

泥炭在干馏污水处理中的应用

油母页岩在低温干馏生产页岩油过程中，产生大量干馏污水，该水成分复杂不易处理。厂技术人员经过多年实验室试验，发现用泥炭做成的新型滤料。对于馏污水处理效果良好，基本上达到排放标准。泥炭之所以对污水治理有很好的效果，主要是由于它的结构和性质决定的。泥炭是沼泽发育过程的产物，它是一种结构复杂，有多种官能团的有机化合物复合体，有极强的吸附性能、代换性能、络合性能等，因此。决定了它在污水治理过程中的重要作用。建议用泥炭对于馏污水进行处理，进行工业性试验。     

循环式活性污泥法（CASS）的研究进展

循环活性污泥系统(CASS)是一种将变容积活性污泥法和生物选择器原理有机地结合起来，具有同步脱氮除磷的以序批曝气-非曝气方式运行的充放式间歇活性污泥处理工艺。文中主要介绍了循环活性污泥法CASS工艺的发展、应用情况及其工艺特点、经济评价，存在问题，就该工艺在国内的应用提出了展望。     

废旧轮胎的回收与利用

用中温干馏、热解法处理废旧轮胎，可以得到炭黑，轮胎热解后的产物经深加工后可以得到钢丝、溶剂油、燃料气。结果证明，此方法的优点是工艺简单，操作容易，原料易得，经济效益和环境效益显著。既节省能源，又无二次污染。     

双膜法处理炼油污水效果好

中国石化集团广州分公司投资 150 0万元 ,从新加坡引进的炼油污水净化处理回用装置投用。此套应用双膜法先进技术净化处理工业废水并回收使用的装置 ,可处理炼油污水 3 0 0 t/ h,投入正常生产运行后 ,企业可减少 3 0 0 0 kt废水排放并循环利用水资源 ,一年的经济效益可达 2 80万元。双膜法处理炼油污水效果好@钱伯章$上海石化股份有限公司