SU802199A1 - Device for collecting and removing precipitate from settling units - Google Patents

Description

one

The invention relates to devices for collecting and removing sludge from sedimentation facilities and can be used in the treatment of industrial wastewater.

A water purification apparatus is known, consisting of a housing with tangential nozzles for supplying treated water, an inner shell for distributing the flow. A device for accumulating sludge in this apparatus is made in the form of a cone located in the lower part and provided with means for automatically controlling sludge discharge.

This device does not contain any elements that allow to dewater the sludge.

A device is known for collecting and removing sludge from settling facilities, a cylinder-conical bunker with a holding vessel with branch pipes located in its upper part supplying the treated medium and air, and in its lower part branch pipes of water and sludge 2,

The known device is not sufficiently effective in operation, the pipes are blocked by sediment and the drainage of water is stopped.

The purpose of the invention is to increase the efficiency of use of the device by accelerating the process of sludge dewatering.

The goal is achieved by the fact that the conic part of the bunker is made of coaxial conical chambers that enter each other and the device is equipped with a catchment column connected to the bunker by water branch pipes.

The drawing shows a device for collecting and removing sludge from settling facilities.

five

The device for collecting and removing sludge contains a cylindrical-conical bunker 1, in the upper part of which there are a branch pipe 2 supplying the treated sludge and a branch pipe 3 for air. Pipe 2 is equipped with a valve. The lower part of the hopper 1 is provided with coaxial, conical chambers 4 interconnecting each other, each of which is via pipeline 5,

5 located in its upper part, is connected to the catchment column 6.

Each chamber 4 is formed by a shell in the form of a reverse truncated cone, and its small base is located at or below the point

the outlet of the nozzle 5 of the underlying chamber of the watershed column 6 by a pipe 7, leaving its lower part, is connected to the tray 8 for supplying the treated medium to the settling tank 9.

In the lower part of the last conical chamber 4 there is a nozzle 10 with a sludge discharge valve and a nozzle 11 for supplying wash water. In addition, this camera pipe 12 with a valve connected to the catchment column 6.

The proposed device works as follows.

To start, the valve of the nozzle 2 is open, and the valve of the exhaust nozzle 10 is closed. The suspension, consisting of wax and solid particles, from the settling tank 9 through the nozzle 2 enters the hopper 1 and sequentially fills the conical chambers 4 and the hopper 1.

After the suspensions of all the {4; nical chambers 4 and the hopper are filled, the valve of the nozzle 2 closes and air is supplied through the nozzle 3, which displaces water from the suspension. Water flows through the sediment layer. the upper part of each conical chamber 4 and then through the nozzles 5 enters the catchment column b and further along the pipeline 7 into the tray 8, through which it is fed into the sump 9.

After the water has been displaced from the upper conical chamber 4, air will begin to enter the catchment column B, however, the water in the catchment column and conical chambers will be at the same level, resulting in a hydraulic gate that prevents air from flowing through the pipeline 7.

Gradually, the water will be forced out of the bunker 1 and all the conical chambers 4, except the bottom. Water left with in the lower conical chamber 4, in mind

its small volume does not significantly affect the overall humidity of the sediment. In addition, it can be removed at low speed through the nozzle 12. After removing the water, the valve of the nozzle 10 opens and the dewatered sludge is removed:.

The proposed device allows to speed up the process of sludge dewatering and to obtain a precipitate with low humidity, which contributes to its further utilization, and, in general, to increase the efficiency of its use.

The use of the proposed device eliminates the need for the construction of lifting equipment, which leads to a decrease in the number of service personnel.

Claims (2)

Invention Formula A device for collecting and removing sludge from settling facilities, containing a cylindrical-conical bunker with nozzles for supplying the treated medium and air located in its upper part, and nozzles for draining water and sludge in its lower part, characterized in that, with an increase in the efficiency of use by accelerating the process of sludge dewatering, the conical part of the bunker is made of another coaxial conical chambers and the device is equipped with a catchment column connected to the hopper with water inlet nozzles. Sources of information taken into account in the examination 1. US Patent No. 3412858, cl. 209-159, 26,11.68. 2..Lattnf et aB Jron and SteeB Engineering, 1975, V.52, No. 5, p. 39-46.