长江口竹园排污区磷的转移动力学  

Transfer kinetics of phosphorus in discharge area from Changjiang Estuary

作　　者：陈希青 邱巍 巫志萍 陈松[2] 廖文卓[2] 

机构地区：[1]水电部上海勘测设计研究院科研所,上海200434 [2]国家海洋局第三海洋研究所,厦门361005

出　　处：《台湾海峡》1998年第3期255-261,共7页Journal of Oceanography In Taiwan Strait

基　　金：国家自然科学基金!49476289

摘　　要：模拟研究上海市污水排入长江口竹园排污区时，污水-海水混合过程中磷含量和形态的变化，及其在颗粒物-海水界面的转移动力学，提供动力学模式，测定转移的速率，进行容量校正，为上海市污水排海环境容量估算和水质控制提供动力学资料和理论依据。The transfer processes of phosphorus during mixing of sewage and seawater fromChangjiang Estuary are simulated. Phosphorus was adsorped on the first day and then wasreleased continually from particulate form. Dissolved inorganic phosphorus was the majorspecies of dissolved phosphorus in the mixed water body.The adsorption-release of phosphorus follows its ion-exchange property and can be ex-pressed by the change-equilibrium kinetic equation t/x(t) =t/x(eq) +B'. The values of x(eq) and Δx(eq) calculated from the equation are very close to those measured, The ma-ximum of phosphorus released under specified conditions can also be estimatid.The increase rate of dissolved phosphorus is governed by the first-order kinetic model:lnclP=kt+B. A linear relationship exists beween the rate constant (k) and the initial adsrp-tion rate (ao). The net increase rate is ko≈0.02d-1. It has been estimated that if 1 Mt ofwastewater is discharged per day, the environmental phosphorus capacity of the sea area willreduce by 50kg every day because of the release of particulate phosphorus into the waterbody.

关 键 词：污水 海水 动力学 长江口 磷扩散 排污区 

分 类 号：P734.44[天文地球—海洋化学] X145[天文地球—海洋科学]