PLANT FOR CLEANING WATER FROM TOXIC ADMIXTURES (VERSIONS) Russian patent published in 2003 - IPC

FIELD: water supply systems; cleaning water from toxic admixtures, such as iron, manganese, heavy metals and their compounds, hydrogen sulfide; preparation of potable water. SUBSTANCE: according to first version, plant is provided with inlet branch pipe connecting the starting water source with coarse filter whose tubular elements are made in form of stainless steel screen with meshes of 30-50 mkm. Connected to pipe line coupling the coarse filter with bioreactor is aeration unit including compressor, receiver with relay for switching on/off compressor, moisture trap, check valve and water-jet ejector which are connected in series. Hermetic bioreactor is provided with packing of spatial non-oriented cellular structure occupying entire area of cross section; it is formed by interwoven filaments at volume weight of 0.02- 0.03 g/cu cm at porosity no less than 96%. Microorganisms: iron, manganese and hydrogen sulfide destructors are secured on packing. Packing is placed in housing of bioreactor and ascending flow of water passes through it. Bioreactor is connected with hermetic contact filter provided with tubular elements made porous material, polypropylene, for example whose pores have size of 10-50 mkm. Contact filter is connected by means of pipe line with hermetic decontaminating unit made in form of ultra-violet lamp and connected with hermetic clarifying filter whose tubular elements are made from porous material sintered from titanium powder; size of its pores ranges from 10 to 50 mkm. Clarifying filter is connected by means of pipe line with water supply system. Bioreactor, contact filter and clarifying filter are provided with gas discharge units made in form of float valves and interconnected flushing water discharge pipe line through shut-off units; flushing water discharge pipe line is connected with sewage line through tank with siphon and check valve. Inlet branch pipe is connected with water dispensing line by means of outlet branch pipe and bypass pipe line fitted with shut-off units at the beginning and at the end. According to all versions, plant satisfies technical requirements in full scope at stable pressure and flow rate. EFFECT: enhanced efficiency. 60 cl, 6 dwg, 1 tbl