ZHOUYang-yang,CHENQian,RANZong-xin,et al.Application of Granulated Fluidized Bed System in the Treatment of Membrane Concentrated Wastewater in Petrochemical Enterprises[J].China Water & Wastewater,2025,41(4):126-130.
Application of Granulated Fluidized Bed System in the Treatment of Membrane Concentrated Wastewater in Petrochemical Enterprises
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第4期
Page:
126-130
Column:
Date of publication:
2025-02-17
- Keywords:
- membrane concentrated wastewater; reverse osmosis concentrated salt water; chemical crystallization; agglomeration and granulation; hardness removal; turbidity removal
- Abstract:
- The circulating cooling system is the main water-consuming unit in petrochemical enterprises production, and its effluent is usually treated by a membrane concentration unit, whose wastewater has become a hot research topic due to the complexity of its quality content. The membrane concentration wastewater in a petrochemical park in Jiangsu Province was softened and removed for turbidity by a granulated fluidized bed system using fluidized beds for chemical crystallization circulating granulation and circulating agglomeration granulation solid-liquid separation as the main treatment units. The system operation effect shows that the hardness removal rate can stably reach 92%, and the effluent turbidity can be continuously stabilized below 3 NTU. The chemical crystallization circulating granulation fluidized bed system can achieve a treatment load of 60-100 m3/(m2·h), and the maximum wastewater treatment capacity of a single device with a diameter of 2 400 mm can reach 452 m3/h. Compared with the mechanical agitation clarification tank treatment process before modification, this system has the advantages of high treatment efficiency, low treatment cost, small footprint, high degree of system automation, and low one-time investment.
Last Update:
2025-02-17