NATURAL SCIENCES

Journal of fundamental
and
applied researches

Effect of sewage of Astrakhan gas complex on soil

2013. №2, pp. 68-72

Vladimir A. Plakitin - post-granduate student, Astrakhan State University, 1Shaumyan Sq., Astrakhan, 414000, Russian Federation, estnauki2009@rambler.ru

Andrianov Vladimir A.  - D.Sc. (Geography), Professor, Astrakhan State University, 1Shaumyan Sq., Astrakhan, 414000, Russian Federation, andrianov_v.a@mail.ru

Relevance of the study is the fact that in the area of the Volga-Ural sands in the Left Bank of the Volga, Astrakhan gas complex functions. The large amounts of fresh water requires for its production. Following treatment produces up to 8 million m3 of wastewater per year. One of the features of the project is the lack of clear AGK return-waters into surface water, recycling them is held by the relief. The wastewater after treatment comes in a container seasonal adjustment, which accumulates in the cold season. Since April to October (the growing season), the wastewater must be disposed of on land-delcheskih irrigation fields. This technology can also be a source of human influence on soil, vegetation, groundwater and nearby streams. Observed soil classified as "insufficient humidification" with humus content 0.1–0.3 %. These soils are not saline (solid residue 0.03–0.05 %). The reaction medium is neutral or alkaline (pH 6.8–8.0). The results of years of the research of quality and quantity of the waste water and the soil. The contents of the studied pollutants in the water except chlorides do not exceed the norm. The comparative analysis of long-term soil samples did not show a tendency to accumulate contaminants. The exceedance of MPC and UEC for priority pollutants (sulfates and petroleum products) were not detected. In general, the concentration of all components of the same order of their content in the background area. The signs of degradation on the results of macro-component composition is not fixed. The potential ability of pollutants in soils is small, which is defined by the low absorption capacity of sand.

Key words: monitoring,waste water,pollutants,Volga-Ural sands,Astrakhan gas complex,the capacity of seasonal adjustment,agricultural irrigation fields,macrocomponents,pH,chlorides,sulfates,petroleum products