Abstract

In recent years about 5.04 million tons of salts a year arrive down the River Ili to Balkhash Lake. Using water of the Ili River for filling the Kapchagaisky reservoirreduced volume of arriving water from the river to 2/3 and decreased level of the lake. It causes mineralization, which advances forecasts. Complex research of influence of the IliRiver on the current state of salt formation in Balkhash Lake is needed as well as hydrochemical research of the water area of Balkhash Lake and the Ili River. In our study the chemical analysis of the qualitative and quantitative characteristics of water with use of classical and physical and chemical methods of the analysis, such as, nuclear and absorbing, roentgen fluоrescence spectrometry and crystal and optical analysis was realized. It is established that crystallization of salts begins with calcium carbonate in the form of aragonite, crystals of nesquehonite join this process, and in deposit the main carbonate of magnesium drops out. Processes of metamorfization with participation of ions of carbonate, hydro carbonate and calcium, are bringing calcite sedimentation. They occur everywhere, but processes with participation of magnesium ions are bringing magnesite or dolomite sedimentation only in extreme east stretch of the lake. In saturated solutions of carbonates there is an increase in ions of potassium in sediment. Thus, their quantities increase a little. It is especially sharp for sulfate and sodium chloride in the direction from the west to the east. The calcium carbonate in the firm phase possesses more absorbing ability, than magnesium carbonate, and the presence of ions of potassium at sediment doesn't change structure of the last. At isothermal evaporation of mix of solutions of potassium carbonate with saturated solution of calcium carbonate, and also potassium sulfate with saturated solution of calcium sulfate and the joint sedimentation of potassium is noticed.

Highlights

  • Water resources of Kazakhstan are one of the major factors stimulating the rates of its economic development

  • There is an absence of a uniform approach to the solution of sediment formation processes in continental reservoirs. This was the reason for starting hydro chemical research on the water area of Balkhash Lake since the summer 2009

  • If carbonates didn't participate in sedimentation process, their contents, as well as the content of chlorine ions, should increase in the 8th hydro chemical area (Burlyu-Tyubinsky stretch) approximately six times and are about 32.0 mmol/l

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Summary

Introduction

Water resources of Kazakhstan are one of the major factors stimulating the rates of its economic development. One of the major continental salt basins of Kazakhstan is Pribalkhashye - district of the Lake of Balkhash (Beremzhanov, 1989). On the Ecology Chair of Zhetysu State University named after I.Zhansugurov, genesis of natural salts of Pribalkhashya was investigated and rational ways of using sulphatic lakes were proved. There is an absence of a uniform approach to the solution of sediment formation processes in continental reservoirs. This was the reason for starting hydro chemical research on the water area of Balkhash Lake since the summer 2009. Its purpose was specification of modern salt balance of the Lake and development of forecast for prospect

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