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681.
介绍了无锡市太湖新城污水处理厂的一期工程设计概况和所采用的改良型A^2/O脱氮除磷工艺,分析、探讨了污水处理厂的调试、培菌、试运行过程中出现的问题,并针对性地采用了一系列的解决措施。由监测数据表明,该工艺运行可靠,出水水质稳定,实现了污水处理厂的正常运行。 相似文献
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The significant volume and weight reduction along with the energy potential of MSW, in the form of refuse derived fuel (RDF), has made its incineration an attractive alternative. However, the gaseous emissions such as, CO2, CO, NOx and SO2, which are the byproduct of the combustion process pose serious environmental problems. These problems are compounded by the presence of certain highly regulated hazardous wastes such as, dioxins and furans in the exhaust stream. In the present investigation, different compositions of RDF/Coal blends were examined and the gaseous emissions from the combustion of the briquetted fuel were measured. Also, a direct comparison of emissions from RDF/coal blend incineration with coal combustion is presented in this paper. The potential for recovery of ferrous and non- ferrous metals provides an additional economic motivation for the use of RDF/Coal blended briquettes. 相似文献
686.
Domènech X Ayllón JA Peral J 《Environmental science and pollution research international》2001,8(4):285-287
The paper focuses on the production of H2O2 by photocatalysis over ZnO in an aerated aqueous phase. The presence of different reductants that increase the H2O2 production in the aqueous phase is analysed; particular attention is paid to nitrite, which has been shown to be the reductant that produces the most significant increments in the H2O2 production. The photocatalytic anodic decomposition of ZnO in the presence of the different reductants is also investigated. From the results obtained, the relevance of the ZnO photocatalysis in the formation of environmental hydrogen peroxide is estimated. 相似文献
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Comparative study of the oxidation of atrazine and acetone by H2O2/UV, Fe(III)/UV, Fe(iii)/H2O2/UV and Fe(II) or Fe(III)/H2O2 总被引:1,自引:0,他引:1
In this study, the rates of degradation of organic compounds by several AOPs (H2O2/UV, Fe(III)/UV, Fe(III)/H2O2/UV, Fe(II)/H2O2 and Fe(III)/H2O2) have been compared. Experiments were carried out at pH ≈ 3 (perchloric acid / sodium perchlorate solutions) and with UV reactors equipped with a low-pressure mercury vapour lamp (emission at 253.7 run). The data obtained with atrazine ([Atrazine]o = 100 μg/L) showed that the rate of degradation of atrazine in very dilute aqueous solution is much more rapid with Fe(III)/UV than with H2O2/UV. Photo-Fenton process (Fe(III)/H2O2/UV) was found to be more efficient than H2O2/UV and Fe(II)/H2O2 for the mineralization of acetone ([Acetone]o = 1 mM). 相似文献
689.
Reductive dechlorination of non-ortho substituted polychlorinated biphenyls by ultraviolet irradiation in alkaline 2-propanol 总被引:3,自引:0,他引:3
Yuan Yao Kohji Kakimoto Hiroaki I. Ogawa Yasuhiko Kato Yoshifumi Hanada Ryota Shinohara Eiichi Yoshino 《Chemosphere》1997,35(12):2891-2897
The photodechlorination pathways of 3,3′,4,5,5′-pentachlorobiphenyl (3,3′,4,5,5′-PentaCB) and the related lower polychlorinated biphenyl congeners irradiated at 254 nm in alkaline 2-propanol were elucidated. Steric effect is the most important factor for controlling the dechlorination pattern of these substrates. Electronic effect also influences the photoreactivity of chlorine substituents. 相似文献
690.
萃取比色法测定水中的丁基黄原酸盐 总被引:2,自引:0,他引:2
利用萃取比色法测定水中丁基黄原酸盐的含量,发现该方法的灵敏度、准确度和稳定性都可以满足样品分析的要求,并利用不同方法对样品进行比对分析,无明显差异。 相似文献