高盐度生活污水处理技术研究现状及发展

Research Status and Development of High-salinity Wastewater Treatment Technologies

海水直接利用及含盐地下水的入渗导致沿海城市的生活污水含盐量较高。一般低浓度无机盐有益于微生物的生长,高浓度无机盐则抑制大多数微生物的活性。介绍了高盐度生活污水处理技术的研究进展,分析了生物法处理高盐度生活污水的技术可行性,提出强化驯化、辅助化学除磷及碳源投加是出水水质达标排放的重要保障,其中高效沉淀生物过滤技术更具竞争力。

Direct seawater utilization and saliferous groundwater infiltration lead to high salinity of domestic sewage in coastal cities.Generally,low concentration inorganic salt is beneficial to the growth of microorganisms,however,high concentration inorganic salt inhibits the activity of most microorganisms.The research progress of high-salinity domestic sewage treatment technology was introduced.The technical feasibility for treating high-salinity domestic sewage by biological method was analyzed.Strengthening domestication,aided chemical phosphorus removal and carbon source dosing system guarantee the effluent quality to meet the discharge standards.By comparison,the effective sedimentation and biofiltration technology are more competitive than others.