SU1563732A1 - Clarifier with suspended layer of sediment and distributing device for water supply - Google Patents

Abstract

The invention relates to devices for the purification of natural and waste waters from suspended substances. The purpose of the invention is to increase the efficiency of water clarification and reduce the consumption of materials, improve air release and increase the uniformity of water distribution. The clarifier with a suspended sediment layer comprises a housing with a bottom, a water supply nozzle, an air separator, a distributing device located in the bottom, a collecting chute with a water discharge nozzle and a slurry sealing chamber with collecting shelf elements. The outer walls of the sludge-compaction chamber and the precipitation elements are arranged parallel to the walls of the pyramidal bottom, made with sludge separator windows, equipped with sludge-removing flaps, the water supply nozzle is equipped with an ejector connected to the sludge-compacting chambers. The air separator is connected by pipeline to the water outlet pipes. The distribution device is in the form of a chamber with an upper perforated wall, in which vertical concentric perforated partitions are installed, and the water supply nozzles are connected to the chamber cavities formed by the partitions, and the nozzle area is directly proportional to the volume of the cavities with which they are connected. 2 s. And 1 z.p. f-ly, 2 ill.

Description

The invention relates to devices for the mechanical treatment of various natural and waste waters and can be used, for example, in municipal water consumption and drainage systems, in the pulp and paper and chemical industries for clarifying waste waters containing suspended solids with a high degree of polydispersity.

The purpose of the invention is to increase the efficiency of water clarification and reduce the consumption of materials, improve air release and increase the uniformity and distribution of water.

with

FIG. J depicts a clarifier with a dispenser for feeding a feed in FIG. 2 - pasa A-A in FIG. one.

The clarifier contains a housing 1 square shape in plan with the bottom 2 in the form of a truncated pyramid. In the upper part of the clarifier there is a nozzle 3 for supplying clarified water with an ejector 4, an air separator 5 and a collection tray 6 with a nozzle 7 for draining clarified water. The air separator 5 is connected by pipe 8 to the pipe 7. The sludge sealing chamber 9 is designed as vertical settling tanks with precipitating shelf elements 10 installed parallel to the walls 11 of the bottom 2. In the walls 11 there are sludge-removal pits 1 2 2, which are equipped with height-adjustable slag waste flaps 13. The upper part of the sludge compaction chamber 9 is connected through the collector 14 to the nozzle 7 for discharging clarified water, the lower part, the settling zone of the sludge packing chamber 9, is connected through the collector 15 and the pipe wire

16 with an ejector rarefaction zone 4.

In the lower part of the bottom 2 there is a distribution device made in the form of a chamber 17 formed by the walls, the bottom of the bottom and the upper perforated wall 18. The chamber

17 concentric, vertical perforated partitions 19 and 20 are installed. The lower part of the air separator 5 is connected to the chamber 17 by the bypass pipes 21 and the nozzles 22 and 23 of the supply of clarified water in the cavity 24

and 25 formed by perforated partitions 19 and 20. The volume of the cavity 25 is twice the volume of the cavity 24, and the total area of the cross section of the pipes 23 is twice the total area of the section of the pipes 22.

The clarifier works as follows.

Clarified water with a suspended matter content of less than 50 mg / l with their increased degree of polydispersity enters through pipe 3 and ejector 4 into the air separator 5, where air dissolved in water is released. At the same time, in order to accelerate natural air release and reduce the size of the air separator, the effect of a falling flow of liquid is used, which, when falling from the pipe 7, forms a vacuum zone. As a result, the air from the air separator 5 is further separated through

pipe 8. Water from the air separator 5 through the bypass pipe 21 steps to the switchgear. Through the pipes 22, water is supplied to the cavity 24 of the chamber J7, and through the pipes 23 to the cavity 25. The cavities 24 and 25 are filled with water at the same time because the total area of the pipes 22 and 23 is directly proportional to the volume of the cavities 24 and 25. The upward flow of water It comes out of the chamber 17 through the perforated wall 18 and is evenly distributed over the horizontal section of the housing 1. The perforated partitions 19 and 20 also contribute to this, smoothing out fluctuations in the flow of incoming water.

Water from chamber 17 flows at a rate necessary to form a suspended layer of sediment under chamber 17. To seal this layer, part of the sediment from the bottom of the sludge treatment chambers 9 is fed through the collector 15 and pipelines 16 via ejector 4 to the clarified water.

The water passing through the suspended sediment layer is filtered, clarified and poured into the collecting tray B, from where it is removed through the nozzle 7.

An excess of suspended sludge flows through the sludge disposal ports 12 into the sludge compacting chambers 9, where the suspended particles are deposited on the shelf elements 10 and slide down to the bottom of the chambers, from which the sludge is periodically pumped out. At the same time, the slime shields 13 prevent the breakthrough of clarified water into the slime sealing chambers 9.

The clarified water from the sludge compaction chambers 9 is discharged through the collector 14 and the nozzle 7.

The cavity of the clarifier body, which is free from structural elements in comparison with the prototype, and more uniform than in the prototype, the distribution of clarified water entering the clarifier increases the efficiency of clarification.

Switchgear can be used as part of other types of clarifiers.

Claims (3)

1. A clarifier with a suspended sediment layer, comprising a housing with a bottom, a water supply nozzle, a dispensing device located in a conical bottom, an air separator connected to the dispensing device with an overflow pipe, a collection chute with a water outlet nozzle and a compression-sealing chamber with precipitated shelf elements mounted outside the conical bottom and having a common wall with it, characterized in that, in order to increase the efficiency of the clarification and reduce the material intensity, the outer walls of the slurry lotnitelnoy, osadi- chamber and to the elements are arranged parallel to the walls of the conical bottom, made from conductive shlamootvod pshamootboynymi windows provided with flaps, wherein the water inlet is provided with an ejector connected with Sludge camera. 2. A clarifier according to claim I, characterized in that, in order to improve air separation, the air separator is connected to a water outlet pipe by a pipe. 3. The distribution device for supplying water to the clarifier, made in the form of a chamber with an upper perforated wall and supply pipe, is characterized in that, in order to increase the uniformity of water distribution, the chamber is equipped with vertical concentric perforated partitions and water inlets, cavities formed by partitions with an inlet pipe, with the cross-sectional area of the pipes directly proportional to the volume of the corresponding cavities. Riga.1 24Fig, I