印染廢水處理論文外文翻譯1-其他專(zhuān)業(yè)(參考版)
2025-01-23 08:07本頁(yè)面
【正文】 ② singleuse biological Ji can not meet the needs of practical application。s reagent oxidation. Ozonation does not produce sludge and secondary pollution, high costs, however, not suitable for large flow waste water treatment, and CODcr removal rate. Seldom a single ozone treatment of dyeing wastewater, but will bine it with other methods, plementary to each other to achieve the best wastewater treatment effects. Wang Xiaojun et al [13] with ozone biological aerated filter wastewater treatment process Electrochemical Electrochemical method has the equipment, small, small footprint, simple operation and management, CODcr removal rate and the bleaching of high and good, but the precipitation formation and consumption of large electrode materials, higher operating costs. The traditional electrochemical methods can be divided into electric flocculation, electric float, electrooxidation and microelectrolysis, electrolysis within the law. Many foreign researchers from the developing electrode materials with high electrocatalytic activity to proceed, on the anic electrocatalytic oxidation mechanism of influencing factors and a more systematic application of theoretical study and preliminary research, the domestic research in this field has just started. biological treatment Biological treatment include aerobic and anaerobic methods. Currently the main method of dyeing wastewater using aerobic treatment. Divided into aerobic activated sludge and biofilm. A large number of both activated sludge deposition of anic material, but also remove some color, you can finetune the pH value, high efficiency and low cost of operation, effluent quality is better suited to deal with printing and dyeing wastewater with higher anic matter content。 finishing stages of finishing wastewater discharge. Quality printing and dyeing wastewater with raw materials, production varieties, production technology and management level vary, leading to various printing and dyeing process wastewater discharge summary after the ponent is very plex. With the rapid development of industrial dyes and finishing technology, new additives, dyes, finishing agents in the dyeing industry, being used extensively in refractory toxic anic content are more and more, and some are carcinogenic, mutation, resulting in distortion of the anic matter, on the environment especially the water environment of threats and hazards is growing. Overall, the printing and dyeing wastewater is characterized by plex position, anic matter content is high, dark color and chemical oxygen demand (COD), whereas the biochemical oxygen demand (BOD5) is relatively low, poor biodegradability, emission volume. the limitations of printing and dyeing wastewater treatment 80 years ago, our printing and dyeing wastewater biodegradability higher, CODcr often concentration 800mg / L the following, using the traditional biological and physicochemical cotreatment system, effluent discharge standards can be achieved. Past two decades, water quality printing and dyeing wastewater has undergone great changes. Traditional printing and dyeing wastewater treatment methods, such as adsorpt
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