scientific journal
  • ISSN 2072-8158
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  • Урал-Пресс: 012688

Journal «Water: chemistry and ecology» № 12 (30) за December 2010 г.</H3>

Journal «Water: chemistry and ecology»


№ 12 (30) за December 2010 г.

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Contents:

p. 2-11 /

Proskurina I.V.
Belousova A.P.

Technogenic load as risk factor of ground water contamination process

The paper reports studies of the technogenic load estimation of ground waters. Different methods have been proposed according to dominant contaminants and initial data. Three approaches to technogenic load zonation of ground water have been suggested, the Bryansk Region being taken as an example. The map of total technogenic load has been developed with three regions being subdivided on it.

Keywords: ground water, quality, technogenic load, zonation


p. 12-17 /

Sirotkin A.S.
Shakirov G.G.
Vinter J.
Gallert K.

Analysis of airtank biological treatment facilities in operation for nitrogen and phosphor deep removal

Technique for nitrogen removal from wastewater by airtank based biological treatment facilities has been overviewed. Operational background of biological treatment facilities applied in Kazan city has been studied, denitrification zone with nitrifier airtanks for ammonium, nitrite and nitrate nitrogen removal as well as phosphate removal being developed. Denitrification zones with two times less volume than that of nitrifying agents are proved to remove nitrogen, nitrites and nitrates and phosphates up to pollution standards, practically 100% removal for nitrate nitrogen being achieved.

Keywords: airtanks, biological phosphor removal, denitrification, domestic wastewater, nitrification


p. 18-22 /

Nojman Sh.

Arsenic removal from drinking water by selective hybrid adsorbents

Hybrid adsorbents for arsenic selective removal from drinking water have been analyzed. The interference of other ions, namely silicate, with arsenate during the adsorption process, resulting in a significant reduction of capacity for arsenic uptake. There was found a way to increase capacity to a higher level after repeated conventional regeneration of the adsorbent. Practical procedure has been developed and tested for the removal of arsenic on a household scale.

Keywords: arsenic removal, selective adsorbents, water treatment


p. 27-34 /

Bulgakov N.G.
Risnik D.V.
Levich A.P.
Mil'ko E.S.

Ecological water conditions analysis for Lower Volga points based on phytoplankton bioindication

Pollution standards are developed for The Lower Volga subbasin. Ecological wellbeing boundaries (EWB) for biological indicators (that is rank distribution and level indices) and ecologically permissible values (EPV) for physico-chemical factors were determined. Ecological state of 12 points has been estimated by comparison between physico-chemical and level indices with EWB and EPV through long period of time.

Keywords: bioindication, ecological standardization, phytoplankton, species diversity indices, water quality


p. 35-40 /

Kahramanly Yu.N.

New foam based polymer sorbents for oil spill elimination

The study is concerned with new foam based polymer sorbents from polyamide and styrene plates mixture. It is established that the above sorbents are multiple-use agents with high sorption capacity, being more effective than those based on individual polymers.

Keywords: grafted copolymer, macrostructure, polymer foam, sorption capacity, volume weight


p. 41-53 /

Tarasov V.V.
Kizim N.F.
Chzhan Dun Syan

Dynamic interfacial layer effects in the liquid-liquid systems

Peculiarities of mass transfer for the liquid-liquid systems in the context of dynamic interfacial layers formation in nonequilibrium systems are observed. Essential effects of the extraction processes acceleration and deceleration (as well as for re-extraction processes) in the systems with not updated or poorly updated surface in the Lewis-Gordon diffusion cells which are basically used for studying interfacial layer dynamics are revealed. Such effects should be developed at the transfer of the substances through biological, liquid emulsion and impregnated membranes, in the case of an extraction by little drops, in flowing down films and jets. Basically, the effects are observed at the mass transfer accompanying chemical reactions.

Keywords: “memory”, bifurcation, dynamic interfacial layers, electrostatic field effect, extraction, interfacial phenomena, kinetics, Lewis- Gordon cell, Marangoni effect, structural-mechanical barrier


p. 54-61 /

Margaryan L.A.
Pirumyan G.P.

New interdisciplinary approach to drinking water source assessment

Clean water provision is a point of overriding priority nowadays. Rural water treatment requires special consideration for main water sources here are wells or mountain rivers. As a solution the new interdisciplinary approach is offered. Index method of contamination assessment is used in water composition analysis taking into account WHO standards.

Keywords: drinking water, full assessment, heavy metals, human impact, water quality index