SU1237637A1 - Device for purifying sewage - Google Patents

Description

2. The device according to claim 1, that is, that the entrance chamber is equipped with a tangential sand trap located below the level of the liquid,

3. The device according to claim 1, characterized in that it is equipped with a chamber for collecting the purified liquid. The invention relates to devices for the purification of waste water from oil products and mechanical impurities.

The purpose of the invention is an increase in the degree of wastewater treatment.

FIG. 1 shows the proposed device, a slit; in fig. 2 shows section A-A in FIG. one.

The device comprises a housing 1, an inlet chamber 2 with a tangential sand-catcher 3 located below the liquid level, a settling chamber 4 with a thin-layer separation unit of corrugated plates 5, equipped with a net 6 of oleophilic material on the bottom side and inclined at the ends of the plates at the ridges I depressions of grooves 7 and 8 for removal of oil products and sediment, oil collection pocket 9, equipped with height-adjustable overflow wall .10, oil product collection chamber 11, Subsidiary chamber 12, inclined from the inside canopies 13 forming with the walls of the chute 14 for removal of purified water. The walls of the flotation cells have holes 15 for draining the purified water into the chamber 16 for collecting the purified liquid, located on the outer side of the flotation cell 12o. The chamber 12 is equipped with a visor 17 located in its upper part above the level of the liquid.

The device also contains a chamber 18 of flotation sludge, pipelines for the supply of source water 19, removal of purified water 20, sediment 21, oil products of flotation sludge 23, device 24 for supplying water-air mixture, water drain 25.

Located outside the Kemmer of flotation, with inclined visors attached to the inner walls of the flotation chamber with the formation of grooves for collecting the purified liquid, while the walls of the flotation chamber are made with holes at the level of the grooves for draining the purified liquid.

The device works as follows.

The sewage enters the submerged tangential sand trap 3, where under the action of centrifugal force, sand and other heavy impurities are separated. Drainage from sand and heavy impurities, the waste liquid through the inlet chamber enters the settling chamber 4 and is distributed evenly between the plates 5 of the thin-layer separation unit through the grating formed by the grooves 7 for draining oil products into the oil collection pocket 9. Suspended substances are deposited on the upper surface of the wavy plates 5, the sediment slides into the grooves formed by their depressions, along them to the lower edge of the plstine 5 and along the grooves 8 is withdrawn into the lower part of the device, from which periodically removed through the pipe 21, oil products float below the lower surface of the grid 6 from the oleophilic material, coalesce and through the mesh openings enter the channels formed by the protrusions of the plates 5 and the mesh 6, are transported along them to the troughs 7 and diverted to the oil collection pocket 9 through them. In the oil collection pocket 9 further gravity separation of water and oil, which as they accumulate over an adjustable height weir wall 10, the upper edge of which is located vshe level of liquid in the settling chamber 4 comes in oil collection chamber 11, from which periodically through pipe 22 are removed outside the device.

Passing the thin layer separation unit, the waste liquid enters the flotation chamber 12. In the lower part of the flotation chamber 12, the air / air mixture is supplied through the device 24 to distribute it. Not previously isolated contaminants adhere to the gas-puff, are carried into the foam layer and together with the foam, with the aid of the guide visor 17, they acquire horizontal movement and through the weir, 25 enter the chamber of the flotshop 18. Cleared liquid is collected by the grooves 14, through the flooded holes 15 enters the chamber 16 and through the pipe 20 Looks out of the device. The slope of the visor 13 prevents the gas bubbles in the grooves 14 from being postponed and the contamination is carried out with a stream of purified liquid.

Editor A. Dolinich

Compiled by Yu Bo rchuk Tehred V Kadar

Order 3257/28 Circulation 864 Subscription

VINILI State Committee of the USSR

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Proof-reader I. Erdeyi

Claims (3)

1. DEVICE FOR CLEANING WATER HAZARD, containing inlet chambers, settling, flotation chambers, photo sludge and petroleum products, thin-layer separation unit of wavy plates, equipped with slopes located at the ends of the plates at the crests and valleys for drainage of oil products and sediment, respectively, for supplying and phase retraction, oil-collecting pocket, which is due to the fact that, in order to increase the degree of wastewater treatment, the wavy elements of the thin-layer separation unit are provided with an oleophilic mesh on the bottom side The material forming channels with ridges of undulating elements is channels for withdrawal of petroleum products. go with m SGE WITH • m > 2. The device according to claim 1, characterized in that the inlet chamber is equipped with a tangential sand trap located below the liquid level. • 3. The device according to claim 1, characterized in that it is provided with a collection chamber for purified liquid 1237637 Tipped from the outside of the flotation cell, they have inclined visors attached to the inner walls of the flotation cell to form grooves for collecting the purified liquid, while the walls of the flotation chamber are made with holes at the level of the grooves for draining the purified liquid. one