Characteristic and mechanism of sorption and desorption of benzene on humic acid

Environmental Science and Pollution Research - The sorption/desorption behaviors of benzene, toluene, ethylbenzene, and xylene (BTEX) on soil organic matter (SOM) have a significant influence on...     

基于[火用]分析法的矿区工业生态链物质能量流动研究

从工业生态学角度研究矿区工业生态系统的工业代谢和工业生态链，建立矿区物质循环与能量流动[火用]分析和[火用]效率模型。根据生态效率的理念，矿区发展需要五项关键支撑技术，为合理选择煤炭的产业链延伸途径打下理论基础，促进矿区可持续发展。     

污水处理厂不同处理段水样的急性毒性和对MFO的诱导

利用化学耗氧量(COD)、色度、浊度等综合参数对Q67淡水发光菌(P.PhosphoreumQ67sp.)的急性毒性及对鲤鱼肝微粒体混合功能氧化酶芳烃羟化酶(AHH)和7-乙氧基试卤灵-脱乙基酶(EROD)的诱导来评价活性污泥法为主的城市污水处理效果.认为除利用常规的综合指标监测水体质量外,生物监测也是必不可少的.     

预处理方法对供应态LD钢超塑性压缩性能的影响

研究了国产新型冷作模具钢LD钢(7Cr7Mo3V2Si)经球化退火与循环退火后的超塑性压缩的力学特性.试验结果表明,经循环退火后的LD钢,其超塑性压缩性能优于球化退火,而且其最佳超塑性压缩的工艺参数也存在差异.     

粉煤灰预处理及其对染料单体脱色效果的研究

介绍了一种粉煤灰预处理的方法-用8mol/L的H2SO4处理，可较好地改善其表面状况，并用预处理后的粉煤灰对染料单体进行脱色试验，寻找了最佳的处理方案，脱色效果较好，建立了Langmuir吸附等温模型。探讨了其脱色机理，为实际开发利用粉煤灰处理印染废水提供基础研究。     

我国水产养殖业对环境的影响及对策

综述了我国水产养殖业的自身污染、对水环境和生态系统的影响及其对景观环境质量的影响等，提出应在健全的法律法规指导下，建立完善的水产养殖环境管理系统，加强营养与饲料学研究，提高水产养殖饲料质量和投饵水平，同时强化环境工程技术在集约化水产养殖中的应用，以减少污染排放，使水产养殖走可持续发展的道路。     

从美国《濒危物种法》对我国《野生动物保护法》的反思

濒危物种是人类的宝贵遗产，各国在1973年的濒危动植物种国际贸易公约(简称CITES)影响下，纷纷制定国内法以期有效保护和管理濒危物种。仅就1973年美国《濒危物种法》和1988年我国《野生动物保护法》的某些方面作一初步比较，寻求差异的原因，希望对我国濒危物种立法完善有所裨益。     

Seed yeast cultivation for salad oil manufacturing wastewater treatment

The mixture of five yeast strains obtained from soil could remove about 85% TOC of oil-rich wastewater in batch test.While the highest MLSS was obtained at an N:C of 1:5,the oil removal decreased with the increase of N:C during yeast sludge cultivation.Ammonium chloride was the best nitrogen source for yeast cultivation from the viewpoint of yeast growth and oil utilizxation.An ammonia concentration of over 1300 mg/L led to mass death of yeast at a pH of 5.The ammonia concentration should be controlled at a level of 1000 mg/L or lower.     

水质特性和NOM在臭氧氧化和PAC吸附去除MIB、GEOSMIN上的作用

介绍了臭氧氧化、活性炭吸附去除MIB、GEOSMIN时的主要影响因素，分析了各因素对去除率的影响程度及原因。还介绍了臭氧、PAC去除痕量异味物质的机理。     

Fulvic acid removal by nanoparticle TiO2 using a submerged membrane photocatalysis reactor

The degradation of fulvic acid（FA） by nanoparticle TiO2 in a submerged membrane photocatalysis（SMPC） reactor was studied. In this reactor, photocatalytic oxidation and membrane separation co-occured. The continuous air supplier provided O2 for the photocatalytical reaction and mixed the solution through an airflow controller. The particle TiO2 could automatically settle due to gravity without particle agglomeration so it could be easily separated by microfiltration（MF） membrane. It was efficient to maintain high flux of membranes. The effects of operational parameters on the photocatalytic oxidation rate of FA were investigated. Results indicated that photocatalyst at 0.5 g/L and airflow at 0.06 m^3/h were the optimum condition for the removal of fulvic acid, the removal efficiency was higher in acid media than that in alkaline media. The effects of different filtration duration on permeate flux rate of MF with P25 powder and with nanoparticle TiO2 were compared. Experimental results indicated that the permeate flux rate of MF was improved and the membrane fouling phenomenon was reduced with the addition of nanoparticle TiO2 catalyst compared with conventional P25 powder. Therefore, this submerged membrane photocatalysis reactor can faciliate potential application of photocatalytic oxidation process in drinking water treatment.