Environmental Feasibility Analysis of Sludge Water Discharge from Seawater Desalination Projects
A petrochemical enterprise in Zhejiang originally planned to treat the sludge water from its seawater desalination project by dewatering,with the supernatant discharged into the sea and the sludge managed as general industrial solid waste.The dewatering process has now been canceled,and the sludge water is now being directly discharged into the sea along with other cooling water,demineralized water,etc.This paper will use this scenario as an example to analyze the impact of the direct discharge of sludge water into the sea on the water quality of the surrounding sea area using a two-dimensional tidal current mathematical model.The results indicate that the increase in suspended solids(SS)after the direct discharge of sludge water can be controlled within 20 mg/L,and all are within the mixing zone of the discharge outlet,without any exceedance of standards.At the same time,the environmental impact on the surrounding sea area's ecology and sediment is not significant.The treatment method of directly discharging sludge water into the sea,while meeting environmental feasibility,can utilize the dilution capacity of the ocean,simplify the solid waste disposal process,reduce the cost of land-based treatment,and thus promote the sustainable development of the seawater desalination industry.
seawater desalination projectsludge waterdirect discharge into the seasuspended solids
万方数据
维普
