The Application On The Complex Process Made Up Of Anaerobic Baffled Reactor And Sequencing Batch Reactor For Chinese Traditional Medicine Wastewater

Water pollution is a very significant aspect of global environment pollution. And Chinese traditional medicine wastewater is the important constituent of industrial water pollution. This paper discusses the present status of Chinese traditional medicine wastewater treatment. The concentration of organic contaminant in Chinese traditional medicine wastewater is high, so do its biodegradability and chroma; the Chinese traditional medicine wastewater is always discharged in batch and its components are complex. According to these features and data analysis, this paper chooses dissolved-air flotation (DAF) technology, biological anaerobic technology and aerobic technology. To achieve the objective of biological treatment of Chinese traditional medicine wastewater, a technology combined by DAF, anaerobic table-flap reactor and SBR is adopted.As a carrier, the micro-bubble can conglutinate impurity solids in the water. The solids are taken to the surface by bubbles so they can be separated from the water. This is the method of pressurization dissolution DAF technology. It can remove suspended substance with low specific gravity and hard to sedimentate, such as lignin.Anaerobic Baffled Reactor (ABR) sets a series of vertical baffles so that the wastewater moves up and down along the baffles. The wastewater passes sludge beds in every room until the exit. And in this process the organism is contacted with anaerobic activated sludge totally so to be removed. As for SBR system, fill, react, settle, decant and idle operations act in sequence in a single reactor. Anaerobic, anoxic, aerobic and anaerobic environment is formed alternately. In different stages, specific microorganism decomposes different organism. And organism can be removed through nitration and denitration processes, so do nitrogen and phosphor. Through the treatment technology above, the concentration of COD can be reduced from 15000mg/l to 100mg/l, and BOD, from 6000 mg/l to 20 mg/l.So that the disposed water can reach the first degree of national wastewater discharge standard.