Treatment technology of groundwater from the Zyryanovskiy deposit for domestic and drinking water supply

Abstract

The groundwater of the shale deposits of the Uderey suite of the Zyryanovskiy deposit belongs to protected groundwater. The aquifer horizon is the fourth horizon in the geological section and within the Zyryanka water intake is covered by waterproof kaolin clays with a thickness of 40 m. For groundwater withdrawal, the existing wells are used - 2 operating wells and 1 standby well; they are equipped with the ETsV 8-40-150 pumps; the capacity of each pump is 40 m³ per hour. Based on the quality characteristics of the source water and the requirements for product water, a site for water treatment facilities has been developed where the following capital construction facilities were designed: a checkpoint; water treatment plant; feed water tank; second stage pumping station; clean water tanks; diesel engine power plant. Well water is supplied to the treatment plant site by two water pipelines with a diameter of 160 mm. The design includes a modular water treatment plant Global Aqua-2100-W-BM with a flow rate of 2086 m³ per day. This groundwater treatment plant is designed to reduce elevated iron concentrations, remove suspended solids, reduce turbidity and disinfect water with sodium hypochlorite. The treatment plant is equipped to reduce the concentration of manganese if it appears in the treated water. The resulting sludge after water purification is pumped to filter presses for dewatering. The dehydrated sediment is of small volume and solid state, and contains iron hydroxide, manganese and calcium hydroxides. It may be disposed of with municipal solid waste or used in construction. The selected treatment plant meets the requirements of technical conditions and modern water treatment technologies. Water treatment facilities fulfill the strategic task of the state to ensure the vital and sanitary safety of the population.