| 摘要 |
FIELD: treatment of water; cleaning natural water by filtration for industrial and domestic purposes; treatment of waste water. ^ SUBSTANCE: proposed plant includes group of pressure filters with granular charge and pipe lines for delivery of water for cleaning, discharge of cleaned water and delivery of flushing water which are provided with shut-off fittings with drives, discharge of flushing water and first filtrate, manifolds for delivery of starting water for cleaning, discharge of cleaned water, delivery and discharge of flushing water and discharge of first filtrate and automatic control system. Pipe lines delivering water for cleaning and discharging cleaned water and first filtrate are provided with check valves and manifolds delivering starting water for cleaning and discharging cleaned water and first filtrate are provided with shut-off fittings with drives. Proposed plant may also include group of gravity-type filters with granular charge and units for delivery of water to be cleaned and discharge of flushing water, pipe lines and manifolds for delivery of water to be cleaned and discharge of cleaned water, delivery and discharge of flushing water and discharge of first filtrate with shut-off fittings with drives and automatic control system. Units for delivery of water to be cleaned and discharge of flushing water are combined and shut-off fittings with drives are mounted on manifold supplying water to be cleaned, on cleaned water discharge pipe lines and flushing water supply pipe lines, on flushing water supply and discharge manifolds and on cleaned water and first filtrate discharge manifolds. Proposed plant may be also provided with group of gravity-type filters with granular charge and units for delivery of water to be cleaned and discharge of flushing water, pipe lines and manifolds for delivery of water to be cleaned and discharge of cleaned water, delivery and discharge of flushing water and discharge of first filtrate, shut-off fittings with drives and automatic control unit; flushing water discharge unit is provided with water receiver whose upper edge is located above level of water being cleaned in filter; shut-off fittings with drives are mounted on manifold supplying water to be cleaned, on pipes lines discharging cleaned water and supplying flushing water, cleaned water discharge pipe lines and first filtrate discharge pipe line. ^ EFFECT: low cost of plant; simplified automatic control system; ease of mounting and servicing. ^ 7 cl, 3 dwg
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