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These contain a large number of biodegradable industrial wastewater discharges into the sewage treatment plant，resulting in major biochemical reactions is difficult。which led to the sewage treatment plant is not stable run. In parts of the sewage processing plant taken some of the strengthening measures can discharge standards of COD, of NH4+，N-such as conventional pollution indicators. the emission tail water still exists a large number of difficult degradation of organic matter. these organisms continue to be in the environment are widely exist and in the biosphere. enrichment cause greater harm to the ecological environment and biological populations. According to statistics, in 2005, over 70,000 enterprises and nearly 1.6 billion tons of sewage failed to discharge standards, making nearly half of the river and 90% of urban water pollution by different degrees of refractory organic pollutants in waste water has seriously affected the economy sustainable development of society and the ecological environment of human water security. In addition, studies have shown that, even far below the emission standards for organic wastewater is still able to biological hazards and they have a lasting effect on the environment, particularly.
Therefore, we should develop efficient handling of high concentrations of refractory new sound technology for organic waste water, waste water.Refractory organic pollutants harmless to have a key role in the protection of the ecological safety has become the current country important and difficult areas of academia and the engineering of internal and external environment.
Keywords: wastewater; wet air oxidation
目录
1 概论 1
1.1概述 1
1.2 甲基丙烯酸废水以及处理 1
1.3 催化湿式氧化催化剂 2
1.3.1 均相催化湿式氧化催化剂 3
1.3.2 非均相催化湿式氧化催化剂 4
1.4 CWAO 催化剂的失活问题 5
1.4.1 催化剂的流失 5
1.5 催化剂的表征 5
1.6 催化剂制备对溶出的影响 6
1.7 反应条件的影响 6
1.8 换热器的概述 6
1.9 换热器的技术概况 8
1.9.1换热器设备的发展 8
1.9.2 换热器在工业生产中的应用 9
1.10工业安全 10
1.11 工艺流程的确定 11
1.12 湿式氧化装置操作流程 12
1.13 异常情况原因及处理 12
1.13.1 湿式氧化反应工段事故处理 12
1.13.2 车间定员 13
1.14 对本设计评述 13
2 物料与热量计算 14
2.1 废水成分的物料衡算 15
2.2 通入空气所需的量 16
2.3 反应器前后的流量计算 16
2.4 焓值的计算 18
2.5 反应器中压力的取值 19
2.6 反应釜的容积计算 20
2.6.1 反应釜的容积 20
2.7在反应器中反应所需要的热量 20
2.8 反应器的温升 21
2.8.1 设备向四周散失的热量 21
2.8.2 反应器的温升 22
3 反应器与换热面积计算 22
3.1 预热器的传热面积 24
3.1.1 出口温度的设定 24
3.1.2 进出口物料成分的计算 26
3.1.3 换热器出口温度的设定 26