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691.
Y. Dubuc P. Janneteau R. Labont C. Roy F. Brire 《Journal of the American Water Resources Association》1986,22(2):297-303
ABSTRACT: The use of peatlands as the main form of wastewater treatment in a northern climate was studied for the James Bay Energy Society. The Fontanges campsite (70° 17′ 30″ W; 54° 34′ 00″ N) was chosen as the study site. In less than 1.5 km from the point of discharge BOD5, COD, total hardness, inorganic carbon, orthophosphates, total phosphorus, ammonia and total nitrogen were reduced by at least 90 percent. The peatland treatment system studied is divided into four components, each having a specific function. The first part combines the action of microorganisms and adsorption on peat, thus reducing the organic content while increasing the inorganic constituents. The second part uses peat to adsorb the inorganic elements already present in the wastewater and those produced in the first part of the system. The third component acts as an aerator, increasing the dissolved oxygen and decreasing the BOD5 levels of the water. The fourth part removes most of the remaining nutrients, thus acting like a tertiary treatment. Overall, peatlands seemed to be effective in treating domestic settled wastewater in a cold climate. 相似文献
692.
AHP法在废水治理工程评价中的应用 总被引:1,自引:0,他引:1
应用层次分析法(AHP)的原理,建立了废水处理工程的评价模型,并结合废水处理的实例进行了研究,结果证明了AHP法是评价废水处理工程的有效方法。 相似文献
693.
将含有大量悬浮物的洗气箱废水进行初级沉降后,约3/4的废水返回洗气箱用作洗涤水,其余的与洗气塔废水混合进地沉降池去除悬浮物,上清液送至生物滤池进行生化处理去除含氰人合物其他有机物。生化出水经絮凝、澄清后回用于洗气箱和洗气塔实现了废水闭路循环。他 相似文献
694.
甲胺磷农药废水生化处理高效菌选育的研究 总被引:23,自引:1,他引:23
从用甲胺磷农药废水长期驯化的活污泥中,筛选得到两株降解甲胺磷农药废水中有机磷的高效菌,经鉴定一株为蜡样芽孢杆菌(Bacilluscereus)。另一株为嗜中温假单胞菌(Pseudomonasmesophilica)。确定了上述高效菌的最适生长条件和降解有机磷的能力,混合高效菌的有机磷去除率达99.7%。 相似文献
695.
Large-scale constructed wetlands for nutrient removal from stormwater runoff: An everglades restoration project 总被引:14,自引:0,他引:14
Mariano Guardo Larry Fink Thomas D. Fontaine Susan Newman Michael Chimney Ronald Bearzotti Gary Goforth 《Environmental management》1995,19(6):879-889
The South Florida Water Management District (SFWMD) constructed a wetland south of Lake Okeechobee to begin the process of
removing nutrients (especially phosphorus) from agricultural stormwater runoff entering the Everglades. The project, called
the Everglades Nutrient Removal (ENR) project, is a prototype for larger, similarly constructed wetlands that the SFWMD will
build as part of the Everglades restoration program. This innovative project is believed to be one of the largest agricultural
stormwater cleanup projects in the United States, if not in the world. This publication describes the ENR project's design,
construction, and proposed operation, as well as the proposed research program to be implemented over the next few years. 相似文献
696.
William W. Walker 《Journal of the American Water Resources Association》1995,31(4):671-685
ABSTRACT: The State of Florida (1994) has adopted a plan for addressing Everglades eutrophication problems by reducing anthropogenic phosphorus loads. The plan involves implementation of Best Management Practices in agricultural watersheds and construction of regional treatment marshes (Stormwater Treatment Areas or STA's). This paper describes the development, testing, and application of a mass-balance model for sizing STA's to achieve treatment objectives. The model is calibrated and tested against peat and water-column data collected in Water Conservation Area-2A (WCA-2A), where phosphorus dynamics and eutrophication impacts have been intensively studied. The 26-year-average rate of phosphorus accretion in peat is shown to be proportional to average water-column phosphorus concentration, with a proportionality constant of 10.2 m/yr (90 percent Confidence Interval = 8.9 to 11.6 m/yr). Spatial and temporal variations in marsh water-column data suggest that drought-induced recycling of phosphorus was important during periods of low stage in WCA-2A. Maintaining wet conditions will be important to promote phosphorus removal in STA's. Sensitivity analysis of STA performance is conducted over the range of uncertainty in model parameter estimates to assess the adequacy of the model as a basis for STA design. 相似文献
697.
EC法处理选磷废水的研究 总被引:2,自引:0,他引:2
为解决磷矿浮选尾水的污染和回用问题,采用了EC法处理,结果表明,经处理的尾矿水可部分回用,并节省Na2CO3 43-65%,这一处理方法具有一定的实用价值。 相似文献
698.
Kwawe DB 《Journal of environmental management》2002,66(4):345-359
Records in public archives were evaluated for the period 1981-1991. Simple surveys of peoples and of technology and physical premises provided insight to gauge the attitudes of a local community in the Melbourne municipality and the Melbourne City Council towards composting of organic waste materials. There is a lag in perception and attitudes between the local community and the local government towards composting of organic refuse as a solid waste treatment option. The simple methodology of the study still made it possible to verify past and present perceptions and attitudes. 相似文献
699.
低温湿式空气氧化法处理废碱液的研究 总被引:18,自引:0,他引:18
对采用低温湿式空气氧化法处理炼油和乙烯废碱液进行了研究。考察了停留时间对废碱液中硫化物的氧化、氧化产物的形态、COD和酚去除率的影响,反应温度对废碱液中污染物氧化反应的影响。试验结果表明,废碱液的脱臭效果很好,S^2-的氧化产物以S2O3^2-和SO4^2-2种形式共存;酚、COD的去除率及S^2-的氧化反应停留时间影响小,受反应温度影响明显;废碱液的S^2-的酚浓度相当时,COD去除率一 般低于40%, 废碱液的S^2-浓度远大于酚浓度时,废碱液的COD去除率为40%-70%;废碱液中酚的质量浓度大于20000mg/L时才有回收价值。 相似文献
700.