At the complex of measures to reduce the anthropogenic pollution the important role belongs to the monitoring of the enterprises wastewater, implemented by quantifying and analyzing of the indexes of standardized quality wastewater at the treatment plants. This article is devoted to the study of the variability of the composition of wastewater of industrial enterprises in different periods of time with the help of modern methods of mathematical analysis of time-series describing the integral dynamics of the processes of receipt and disposal of pollutants.

Zooplankton is the good indicator of determination of quality of water. On the rivers of Kursk region hydrobiological research on Pantle and Bouck's method in Sladechek's modification has been conducted. A research objective was definition of anthropogenous influence of the cities on quality of waters. It is established that the cities with bigger population and the developed level of the industry make the polluting impact on structure and quality of river waters stronger that, in turn, is reflected in qualitative, quantitative structure and an index of a saprobnost of zooplankton.

The paper deals with the use of flotation machines combined type for sewage treatment car washes. The main attention was paid to the extraction of oil products and suspended substances. To achieve the objectives of the flotation machine of the combined type was reinforced with blocks of thin-layer clarification to retrieve microphotonics. As a result of practical mastering of wastewater treatment of atomic machines of the combined type able to obtain good results in the extraction of oil products and suspended substances.

This article provides an overview of methods for removing reduced sulfur compounds from waste water transporting to the treatment plant as well as in waste waters used directly in treatment plants. The results of the pilot study - to decrease the reduced sulfur compounds concentration in wastewater at the stage of mechanical purification by reagent method are shown. Hydrogen peroxide as well as precipitating agents based on manganese were used as the oxidizing reagents.

In article the problem of rational use of water resources of our country is covered, relevance and need of repeated and turnover water supply in connection with the increasing requirement of industrial enterprises for water for technical needs is given. For improvement of quality of purification of turnover water essentially new highly effective devices are brought and described: the machines with the filtering elements and the electrofloatation machine allowing to combine in themselves directly several functions of cleaning combined pneumatic floatation.

Examines the factors influencing the choice of method of purification of natural waters. The analysis of the chemical composition of natural waters of the Leningrad region, depending on the source and environmental factors. Are some technological features of cleaning of waters of St. Petersburg and Leningrad region.

Quality of water of water objects of Perm as water supply sources is considered. On sanitary and chemical and microbiological indicators the comparative analysis of quality of water in reservoirs of the first category in Perm is given.