面向清洁生产的中药制药过程废水资源化循环利用基本思路及其关键技术

水环境的污染和破坏已成为当今世界主要的环境问题之一。中药制药过程所产生的废水具有组成不稳定、有机污染物种类多、不同厂家废水差异较大等特点,属于较难处理的高浓度有机废水之一。因此,中药制药过程废水的资源化循环利用是综合防治水污染、净化水环境的重要研究内容,也是中药行业绿色发展与产业升级的必然选择。在分析中药制药过程所产生废水的组成特征的基础上,提出了基于清洁生产的"一级处理-用于药效组分回收的二级处理-三级处理"的资源化循环利用基本思路。鉴于膜科学技术应用于污水处理的技术优势,特别是近年来用于制水和污水处理市场份额的快速增长,提出膜分离技术是中药制药过程废水资源化循环利用的重要选择之一,也是中药制药行业建立能源节约和环境友好集成技术群的有效途径,为中药制药废水的减排和资源化循环利用提供了新的思路。

Basic thought and key technology on resource recycling of waste water from pharmaceutical process of Chinese materia medica according to clean production

The pollution and destruction of water environment has become one of the main environmental problems in today''s world, and the resource recycling of wastewater from pharmaceutical process of Chinese materia medica (CMM) is the important content in the research of water environment comprehensive prevention and control of water pollution purification. Furthermore, it is the inevitable choice on the green development and industrial upgrading of CMM industry. The wastewater produced in the pharmaceutical process of CMM has the characteristics of unstable composition, many kinds of organic pollutants and varied from different factories, and all belongs to one of the high concentration organic wastewater which is difficult to handle. In this article, the basic thought of "primary treatment-secondary treatment based on resource of effective compositions-third treatment" is been put up according to the characteristic compositions and source of wastewater. In view of the application of a large number of industrial water treatment new technology and new method, the method of using membrane to deal with wastewater is proposed, because of the technology advantages and the rapid growth of market share in water-making and wastewater treatment. Meanwhile, membrane is able to establish effective way of energy saving and environmental friendly integrated technology group. This study provides a new way for the reduction and resource utilization of CMM wastewater.