SU1717171A1 - Device for discharging waters from sedimentation tank - Google Patents

Abstract

The invention relates to the treatment of recycled process water and can be used on horizontal sumps. The purpose of the invention is to increase work efficiency. A device for dumping industrial effluent from a settling tank contains a tray mounted rotatably around a outlet pipe made in the form of two vertical, coaxially arranged pipes, internally rigid, and externally corrugated. A tray in the center below the level of the spillway window for the production of chips. At the ends of the tray diametrically mounted plate vertically and parallel to the axis of the tray. 1 tab., 1 Il.

Description

The invention relates to a technique for purifying recycled process water and can be used on horizontal sumps.

Various devices are known for collecting a surface layer from horizontal sedimentation tanks using floating pumping stations or drainage wells with a self-lifting tip.

However, the known devices require significant costs for their construction and operation, do not provide the quality of selectivity of water intake when using the abstracted water in the repeated process because of the significant flow rates at the inlet to the intake device; In connection with this, the lower, more polluted by suspended particles flows,

The closest in technical essence and the achieved result to the proposed is a device for resetting

Industrial wastewater from sedimentation tanks, which includes a floating water intake in the form of a tray with a flexible hose connected to a water outlet. To increase the efficiency of use by preventing the sediment from getting into the discharged water, the tray is made with an inclined bottom, overflow windows and a catchment basin, as well as it is equipped with a turning mechanism and is located along the sump radius.

The disadvantages of the prior art device, taken as a prototype, are that the spillway windows are floating on the surface with chips and other debris, as well as: significant energy consumption required to rotate the tray. This leads to a decrease in the efficiency of the device.

The purpose of the invention is to increase the efficiency of the device.

This goal is achieved by the fact that in the device for dumping industrial effluents from t / i

WITH

h j

The guard tray is rotatably mounted around the outlet pipe, the vertical part of which is made double; the inner part is rigid and the outer part is corrugated; a tray is rigidly fixed to its upper part, in the center of which there is an opening below the level of the overflow window for the production of chips; on the crab tray diametrically mounted plate vertically and parallel to the axis of the tray.

The drawing shows the device.

The device placed in the sump 1 consists of a water outlet pipe 2 in which there is a slot 3 for discharging water. The vertical part of the water outlet pipe 2 is covered by a corrugated pipe 4 made of elastic material. A tray 5 with an inclined bottom and overflow windows 6 is located along the surface of the settler. Hole 7 is made in the center of the tray. The trays are connected to the corrugated pipe 4 through the pipe 8. At the bottom, the corrugated pipe 4 is rigidly fixed to the pipe 2, and in the upper part it is placed freely and is kept on the water surface with the help of floats 9. At the diametrically opposed ends, plates 10 are mounted vertically and parallel to the axis of the tray.

The device works as follows.

The polluted effluents enter the settling tank 1. The clarified surface layer of water enters the drainage windows of the b tray 5c with a sloping bottom and then through pipe 8 at the bottom of the tray into the space between the vertical part of the water outlet pipe 2 and the corrugated pipe 4, from where effluent is discharged beyond the settler. .

When the water level changes, the tray 5 held on the surface by the floats 9 is lowered or raised, ensuring a constant height of discharge of the surface layer, and the corrugated pipe held by the floats is compressed or stretched. Considering that

The upper part of the corrugated pipe is located above the water level in the sump; effluent flows only through trays 5. The tray moves along the sump surface under the action of wind energy through the plates 10.

To prevent floating chips from falling into the spillway 6 in the center of the tray, a hole 7 is made through which

with the direction of the wind in the direction of the dam, wood chips pass and accumulate near the dam, without interfering with the operation of the tray. On its reverse side there are no spillway windows. When the wind acts in the opposite direction with the help of plates, the tray moves around the vertical part of the outlet pipe, closing the opening 7, thereby preventing the movement of chips in the opposite direction.

The main technical and economic indicators of the proposed device are shown in the table.

The use of the invention provides a reduction in the cost of

industrial discharge and downtime.

Claims (1)

Claims of the invention. A device for the discharge of industrial effluent from a settling tank containing the sump housing a floating intake in the form of a tray with an inclined bottom and overflow windows connected to the pipe and installed rotatably around the water outlet pipe, which is different in that, in order to increase the efficiency of the device, the water outlet pipe is made in the form of two vertical coaxially arranged pipes, outer of which is made of corrugated and hermetically fixed lower part of the inner tube, and the top - on the tray, while the device is equipped with vertical plates mounted on diametrically located ends of the tray. parallel to its axis, and the tray is made with a central hole for the production of chips, located below the level of the spillway windows. Suspended solids content in mg / l ... Volume of discharge per season, thous.m. Energy costs, kW Energy costs (from the accounting of the cost of 1 kWh 0, 02 rubles), rub: The cost of the device, rub The cost of cleaning the device from floating chips, rubles / year Device downtime due to clogging, h 3 Expenses for dumping 1 m of industrial effluent, cop Annual economic effect, thousand rubles 300 1000 1000 0.1 10.0 / A V / A l // A V //. / // L / g / l / (y H V / L // MVr7 V / Editor And; Casarda Compiled by V. Kislov Tehred M.MorgentalKorrektor O. Kravtsova 37 5 U - ..