SU929574A1 - Flotation settling tank for purifying effluents - Google Patents

Description

(5) FLAWNER FOR SEWAGE TREATMENT

I

The invention relates to the purification of liquids and can be used for the purification of domestic, industrial and rainwater wastewater.

The closest to the invention according to the technical essence and the achieved result is a flotation tank for wastewater treatment, including a cylindrical-conical case, inside which a cylinder coaxially, a device for supplying the source and discharge of purified liquid, aerators, a chute for collecting and maintaining foam, a spout drainage tl.

A disadvantage of the known device is the low degree of purification.

The purpose of the invention is to increase the efficiency of wastewater treatment.

To achieve the goal in a flotation tank, including a body, a cylinder, a device for supplying and discharging liquid, aerators, a chute, a pipe for discharging sludge, aerators are located between

cylinder of the hull wall, above the lower end of the cylinder.

In addition, in order to efficiently separate, collect and remove flotation sludge and purified water, the flotation tank is equipped with a visor attached to the top of the cylinder.

Moreover, the device for removal of purified water is made in the form of a gutter located on the outer side of the core 10, made with openings in the gutter location zone.

Figure 1 shows the flotation settler, a general view in the plan; figure 2 - the same section.

ts

The flotation sump has a cylindrical-conical body 1, inside which cylinder 2 is coaxially positioned, equipped with a visor 3 supply pipelines of the initial k and purified 5 water,

Claims (3)

20 branch pipe 6 of sediment removal, distribution tray 7 with reflective visor 8, chute 9 for removal of purified water, holes 10 in the housing 3. 92, the gutter location area, the gutter 11 for collecting the flotation sludge, the pipeline 12 for withdrawing the flotation sludge, aerators 13. The flotation sump operates as follows. Water through conduit k enters tray 7 and by means of a reflective visor 8 is evenly distributed throughout the area of the outflow zone. When the waste water moves downwards, a solid medium is released from it, which most intensively occurs when the flow is turned to ISO. Finely spaced air bubbles are fed through tubular aerators 13 into the upstream zone. Contaminants adhere to air bubbles and float with them to the surface where a layer of foam forms. With the help of the trump card, the short circuit 3 foam acquires a horizontal movement, enters the 1G groove, condenses and discharges the flotses through pipe 12. Purified water through openings 10 enters the groove 8 and discharges through pipe 5. Combination of sedimentation and flotation processes allows to increase the efficiency of wastewater treatment from suspended and dissolved impurities while simultaneously increasing the hydraulic load and reducing the volume of the structure. Claim 1. Wastewater treatment tank for wastewater treatment, including a cylindrical body, inside which the cylinder of the device for supplying the source and removal of purified liquids, aerators, a chute for collecting and removing foam, is disposed coaxially. cleaning, aerators are located between the cylinder and the wall of the housing, above the lower end of the cylinder. 2. A flotillazer according to claim 1, wherein it is provided with a visor attached to the top of the cylinder. 3. A flotation tank in accordance with claim 1, which is a device for discharging the cleaned liquid in the form of a gutter located on the outside of the casing, made in the zone of the gutter with openings. Sources of information taken into account during the examination 1. Dikarevsky DS, Karavaev I.I. Krasnnsky I.I. Sewage treatment facilities of railway transport. M., 1973, c.ZOi (prototype).