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Tunguska groundwater deposit. 1-Middle Amur artesian basin; 2-research area (right is enlarged); 3-contour of Tunguska groundwater deposition; 4-Tunguska water intake area; 5-wells and their numbers (1210-exploitation and parametric wells according to the insert).
Source publication
Changes in mineralogical composition occurring in the course of preparation of drinking water in-situ are studied based on the data from the monitoring wells of the Tunguska groundwater intake. Intensive dissolution of feldspars, pyroxenes, siderite, and, to a lesser extent, quartz with the formation of secondary minerals (amorphous silica, clay mi...
Contexts in source publication
Context 1
... Tunguska nonstandard groundwater deposit is located in the Amur-Tunguska interfluves (Jewish Autonomous Oblast, Far East, Russia) ( Fig. 1). In 2012, in order to provide water for the city of Khabarovsk, the Tunguska water intake with the use of drinking water treatment in the Subterra aquifer was commissioned. In accordance with the technology, groundwater saturated with oxygen and freed from excessive concentrations of carbon dioxide is pumped into exploitation wells, ...
Context 2
... of the Middle Amur artesian basin [2,4,6]. In the north, east, and south, its border runs along the coastline of the Tunguska and Amur rivers. In the west, the aquifer extends over a distance of more than 100 km; here, the boundary of the deposit is conducted along the basement high from under the alluvial cover in the area of Volochaevka village (Fig. ...
Context 3
... Khabarovsk Municipal Unitary Enterprise Vodocanal drilled parametric wells with coring of 18 m (1264), 12 m (1263), 6 m (1262), and 2 m (1261) near the exploitation well 1210 (Fig. 1) to study the lithological characteristics of the aquifers and their changes. Control well 1010 was drilled outside the zone of active influence of oxygen-containing water and regeneration solutions supplied to the wells (Fig. 1). More than 200 samples of core material of water-bearing ground from these wells were transferred to the ...
Context 4
... parametric wells with coring of 18 m (1264), 12 m (1263), 6 m (1262), and 2 m (1261) near the exploitation well 1210 (Fig. 1) to study the lithological characteristics of the aquifers and their changes. Control well 1010 was drilled outside the zone of active influence of oxygen-containing water and regeneration solutions supplied to the wells (Fig. 1). More than 200 samples of core material of water-bearing ground from these wells were transferred to the Kosygin Institute of Tectonics and Geophysics FEB RAS for study. In addition, to obtain material directly from the filter zone (assumed colmatation zone), the filter interval of wells 1106 and 1208, which were in exploitation for a ...
Citations
... Керн, поднятый в скважине, из которой осуществлялась только откачка подземной воды без инфильтрации насыщенной кислородом воды, представляет собой хорошо промытый мелко-тонкозернистый песок, в состав которого входят минералы пластовой матрицы -кварц, халцедон, полевые шпаты, кристаллический сидерит, пироксены и амфиболы [2,3]. ...
In the aquifer, feldspars and other minerals are being destroyed forming secondary minerals – amorphous silica, clay minerals and secondary siderite.
Introduction. A review of the judicial practice of securing land use rights on the territory of sanitary protection zones (SPZ) of sources of centralized household drinking water supply of the population, a comparative analysis of Russian and foreign approaches to the legal regulation of sanitary protection of sources of centralized household drinking water supply (starting now - SPZ). The computational methods for assessing the spread of pollutants and determining the size of the boundaries of the 2 nd zone of the WSS for water sources, analysis of the degree of protection of aquifers of drinking water supply sources, which can become an alternative to expensive measures to prohibit economic activities in the territory of the SPZ, have been updated. The data on the water pollution of the sources of the centralized drinking water supply of the population of the Russian Federation, the Moscow River, on the effect of surface runoff polluted with persistent organic substances on the sanitary state of surface waters are presented. Material and methods. Methods of the survey, comparative analysis were applied to assess the legal regulation of sanitary protection of sources of centralized drinking water supply to the population in urbanized areas, hygienic assessment of water pollution, correlation and regression analysis. Results. The data of field studies of surface water bodies and groundwater in the Russian Federation indicate the low efficiency of wastewater treatment to ensure water quality safety in the sources of centralized drinking water supply to the population. On the one hand, the low efficiency of groundwater protection and the ability to protect groundwater due to natural conditions are shown. Judicial practice confirms the need to establish the security of a water supply source from wastewater when justifying health hazards and violations of current regulations. Conclusion. The analysis of the legal regulation of the protection of sources of centralized economic water supply to the population and treatment, wastewater disposal showed that the issues of the legal status of the territory of the SPZ of water sources are not developed. The need to standardize approaches to the organization of SPZ and the methods used to ensure the protection of sources of centralized drinking water supply to the population was not evaluated.
Increased concentration of iron (up to 25-28 mg/l), manganese (up to 3 mg/l) and silicon (up to 15-30 mg/l) prevent the use of fresh groundwater for drinking needs of the population in the Amur River basin (Far East of Russia). In the aquifer of the Tunguska groundwater reservoir, the water-rock system has been studied both in natural conditions and in the zones of biogeochemical reactors (subsurface iron and manganese removal) around production wells during the preparation of drinking water in situ. It is assumed that oxidized iron and manganese compounds generated in this process are converted into technogenic thin-crystal Mn - containing siderite under the influence of natural groundwater with high CO2, negative Eh, and low pH values. Composites consisting of rolled matrix grains of sand, micro-fragments of feldspar, pyroxenes and quartz, cemented with fine-grained aluminosilicate material, are the main components that colmatate the screen space of production wells.
We report on the geochemical interactions between a synthetic urban runoff (SUR) and the minerals of materials used in a multi-layered column filter (soil, sand, gravel, and tezontle) at the laboratory scale, which mimicked an unvegetated low-impact development (LID) system. After five 8 h infiltration cycles using the SUR, the average concentrations of Pb and Mn decreased slightly at the column outlet, as did HCO3-, SO42-, and Na+, whereas Mg increased and Cl-, Ca2+, and K+ were only detected at the outlet. The filter materials were comprised of silicates, Mn-bearing oxides (hausmannite and manganite), carbonates (calcite), chlorides (sylvite), and sulfates (anglesite, lanarkite, barite, and epsomite). PHREEQC modeling allowed the identification of the geochemical processes that occurred in the filter. The results showed the removal capacity of the filter materials through the formation of secondary minerals such as rhodochrosite (MnCO3) and the over-saturation of anglesite (PbSO4), and also showed that they may mobilize ions from the upper to the interior layers (as Mg2+ from epsomite, MgSO4·7H2O, and Ba2+ from barite, BaSO4). We highlight the importance of knowing the geological nature of filter materials used in LID systems because they may lead to the geogenic mobilization of toxic contaminants to the environment.
