Olefin preparation wastewater treatment system

The utility model provides an olefin preparation wastewater treatment system. The olefin preparation wastewater treatment system comprises a hardness removal unit, a biochemical reaction unit and a filtering unit which are sequentially connected through pipelines, the hardness removal unit comprises a hardness removal area and a settling area; a biochar layer and an aeration device are arranged in the biochemical reaction unit; the filtering unit is suitable for filtering the olefin preparation wastewater. The olefin preparation wastewater treatment system disclosed by the utility model is wide in applicable range of olefin preparation wastewater, low in requirement on water quality, good in treatment effect, low in operation cost, small in dosage of chemicals and higher in safety. 本实用新型提供一种烯烃制备废水处理系统，包括通过管道依次连接的除硬单元、生化反应单元、过滤单元；所述除硬单元包括除硬区与沉淀区；所述生化反应单元中设有生物炭层与曝气装置；所述过滤单元适于对烯烃制备废水进行过滤。本实用新型所述的烯烃制备废水处理系统，可适用的烯烃制备废水的范围广，对水质要求低，且处理效果好、运行成本低、药剂的使用量少、安全性更高。