江水倒灌污染的水文地球化学分带研究

本文以哈尔滨市松花江污染为例,通过室内模拟槽,研究了江水倒灌过程中的水文地球化学分带(与电子转移、质子转移有关的水文地球化学分带),得出在江水渗透补给地下水的过渡带中,与电子转移有关的氧化还原分带依次分为HS-强还原带、Fe2 还原带、NO2-弱还原带、有O2氧化带;与质子转移有关的分带有CODCr优势带和HCO3-优势带。两种不同类型的水文地球化学分带有机联系、相互作用,并严格控制着钙镁和氮元素等污染组分的迁移过程,从而为实际条件下江水倒灌污染机理的研究提供了基础依据。

The study on the hydro-geochemistry zonations in the pollution of river backflooding

This paper is based on the pollution of Songhua River in Harbin city and studies on the hydro-geochemistry zonations relating to the electron and proton transfering in river backflooding through simulated slot indoor.In the transition zones,the redox zonations relating to electron transfer are HS~-strong reducing zonation,Fe~(2 ) reducing zonation,NO~-_2 weak reducing zonation and O_2 oxidating zonation by order.The zonations relating to proton transfer are COD_(Cr) dominant zonation and HCO~-_3 dominant zonation.The two different hydro-geochemistry zonations are interacted with each other,and controlled the transference of COD_(Cr),HCO~-_3,sulfer,nitrogen,Fe,et al.thus offered the basic basis for the research of pollution mechanism of river backflooding in field.