Cause and Treatment of Mixed Bed Running Cycle Reduction
Shaanxi Yanchang China Coal Yulin Energy & Chemical Co.,Ltd.(referred to as"Yuleng Chemical Co.,Ltd.")is one of China's wastewater nearly"zero discharge"enterprises,raw water quality is complex,by surface water,reuse water,recycled water and a small amount of sewage station water mixed.Various types of reuse water account for a large proportion,and some difficult to remove ions are enriched in the water system for a long time,resulting in unstable operation cycle of the desalted water mixed bed,frequent resin regeneration,increased acid and base consumption,which seriously affect the stable operation of the device.Based on the analysis of the influent ion content,resin exchange capacity and regeneration operation of the mixed bed,the paper found that the influent conductivity of the mixed bed is the key factor affecting the operation cycle of the mixed bed,and the problem of reducing the operation cycle of the mixed bed has been effectively solved by the measures such as the mass utilization of various reuse water.
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