渗透汽化脱盐技术系统与应用研究材料工程专业论文.docxVIP

统研究中的运行参数对各个单元进行能量的消耗和补热问题研究，建 统研究中的运行参数对各个单元进行能量的消耗和补热问题研究，建 立了渗透汽化脱盐计算平台。 针对反渗透浓缩液，其含盐量16～189／L、COD 8400～8500mg／L， 对其进行渗透汽化脱盐处理，发现其保持高脱盐率、高COD脱除率 性能。通过处理不同水体发现，渗透汽化膜在处理非挥发性有机物盐 水中，脱盐率和有机物去除率高，产水效果好；在处理具有氨氮类物 质的有机物盐水中，对氨氮的截留性能差，脱除率低，影响产水效果。 因此，针对不同水质污染带来的问题，要在系统中增加必要预处理或 后处理工序。 通过研究膜污染清洗恢复，为不同水质污染带来的问题在膜清洗 系统中提出建议性清洗方式。在处理反渗透浓缩污水中膜面污染是盐 类结垢物，经盐酸(pH=2)清洗后的膜的膜通量恢复情况较好。 本文进行了渗透汽化脱盐系统的研究，为脱盐过程设计平台，简 化明确系统过程，方便系统初期预案计算。其次，对系统研究前后根 据不同水质污染带来的问题进行预处理和后处理分析，并且为解决系 统应用提供了清洗方式建议。 关键词：渗透汽化，脱盐，膜组件，膜应用 II 万方数据 ABS下RACTStudy ABS下RACT Study on desalting technology systems and applications of pervaporation ABSTRACT With the rapid development of Chinese economy and society,we are facing a shortage of freshwater resources，which seriously affect the ecological damage to the environment and sustainable development gradually．To solve the problem of fresh water resources，we proposed to obtain fresh water from brine feasibility of the method．The method is the different types of water desalination through advanced technology process，while achieving incremental source of freshwater resources， reduce pollution of the ecological environment．This is the only way of sustainable socio．．economic development in China．Pervaporation desalination process can achieve selective evaporation and combine the advantages of membrane distillation and desalination，it is a very promising method．With the development of new materials，membranes have been prepared，its super high flux，high salt rej ection，but its application in desalination have not been．Therefore，this paper carried out research on this issue，providing new and effective desalting technology for sustainable development． Through the characterization of membrane mastered the basic III 万方数据 北京化工大学硕士学位论文properties．The 北京化工大学硕士学位论文 properties．The membrane is a non-homogeneous membrane and the effective separation layer grafted with sulfonic acid groups．Based on the principle of the influence of operating conditions on the flux，it Was correlated wit