摘要
浸没式-MBR处理废水的曝气系统存在高能耗、设计参数难以通过理论计算等弊端。以浸没式-MBR处理化工废水为研究对象,采用试验方法确定膜曝气参数,并引入"分区分负荷曝气模式"优化曝气系统。结果表明:试验中选用的膜产品处理化工制药废水膜曝气的气水比设计值为60:1时,可以有效抑制固体物质粘附于膜表面引起的膜污染现象。采用"分区分负荷曝气模式"进行优化设计,曝气区域的80%采用微气泡曝气用于供应生物需氧量,曝气区域的20%采用大气泡曝气用于冲刷膜表面,较全负荷大气泡曝气模式节能58.6%。
High energy-consumption,difficult to obtain design parameters by theoretical calculation and other disadvantages were in aeration system of immersion-MBR for wastewater treatment.Taking the immersion-MBR for chemical wastewater treatment as the subiect,the paper was aimd to determine the membrane aeration parameters by test methods and introduce the aeration mode by making the difference of range and load in order to optimization of aeration system.Results revealed that the phenomenon of membrane fouling was effectively inhibited,which was caused by the adhesion of solid matter on the membrane surface,when the membrane aeration of air and water ratio was 60:1 in the test for chemical wastewater treatment.The aeration system was optimized by the aeration mode with different range and load,80% of the aeration zone was used to biological oxygen demand by micro-bubble aeration,and the other 20% of aeration zone was used to wash the membrane surface by big bubble aeration,which would save 58.6% of energy than aeration mode of big bubble and full load.
出处
《环境工程》
CAS
CSCD
北大核心
2014年第S1期217-220,共4页
Environmental Engineering
