Abstract
The biological wastewater treatment problem of the small villages located in the Arctic zone is considered. The purpose of this research is to study the alternative wastewater treatment method in Northern settlements. Standard research methods were used: gravimetric and photometric methods of liquid analysis to achieve this goal. This article presents the physical-chemical wastewater treatment method, consisted of coagulation proses, oxidation, sand and sorption filtration. As a result of the laboratory research, the effects of pollutants removal are 96.6% (COD), 82.4% (ammonium) and 97.1% (nitrates). These effects were achieved by the technological scheme that includes a coagulation, two-stage sequential oxidation with potassium permanganate and ozone, and intermediate filtration too. The brands of coagulant and flocculant were selected, as well as their optimal doses.
Highlights
The large area of the Russian Federation is situated in the arctic nature conditions and Tyumen Region is not exception
The severe climate conditions, frozen soil and swamps cause the serious problems while designing, construction and exploitation of the various objects in there
In the Khanty-Mansi and Yamal-Nenets Autonomous Districts, there are more than 100 small settlements located far from the major centres and having the decentralized sewage systems
Summary
The large area of the Russian Federation is situated in the arctic (or close to arctic) nature conditions and Tyumen Region (the largest region in Russia) is not exception. This region is the leading oil and gas producer in own country. The domestic wastewaters are accumulated in the septic tanks and periodically dumped to the soil or water objects without any treatment. Such approach to wastewater treatment negatively influences the environment ecology
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