SU493441A1 - Horizontal sump - Google Patents

Description

one

The invention relates to devices for clarifying and bleaching water in waterworks for industrial and drinking purposes.

A horizontal settling tank for clarifying natural waters is known, which is divided by a vertical partition into a flocculation chamber with a system for collecting and draining clarified water and a sedimentation zone.

According to field studies, the value of the specific load on the sedimentation tanks of this THTia is 1.6-1.7 waters per 1 m of the surface of the structure, including the deposition zone and the flotation chamber.

The weird disadvantage of horizontal settlers with an integrated floc formation chamber is the insufficiently effective utilization of the flocculation chamber volume.

The purpose of the invention is to improve the performance of the sump.

This is achieved by the fact that the vertical partition has a hole in the lower part, which is adjacent to the central galler, provided with sludge pipes, located in the bottom part of the flocculation chamber.

FIG. 1 shows a horizontal sump, longitudinal section; in fig. 2 - the same

plan; in fig. 3 is a section along A-A in FIG. one; in fig. 4 is a section along BB in FIG. one.

The sump consists of a flocculation chamber consisting of suspended sediment zone 1 and clarification zone 2, precipitation zone 3, central gallery 4 for supplying raw water to the sedimentation zone, perforated boxes 5 for distributing raw water throughout the chamber, perforated grooves 6 for collecting clarified water sedimentation areas, sludge discharge pipes 7, perforated pipes 8 and pipe 9, respectively, for collecting and draining the clarification water J3 of the flocculation chamber, the collection pocket 10 of the clarified water, branch pipes 11 and pipe 12 for supplying raw water according to into the flooding chamber and the central gallery of water guides, 13, for distributing water across the width of the section, perforation boxes 14 for collecting sludge, central sludge disposal, its Channel 15 and pipe 16 for withdrawing sludge from the sump, vertical partition 17 with the lower part of the hole 18.

The sump of the proposed design works as follows. The part of the water to be clarified, after being mixed with the coagulum, is heated through the pipes 11 and 12 into the distribution perforated boxes 5 and the central gallery 4.

From the distribution boxes, the water is directed to the layer of suspended sediment 1, where contact contact coagulation of suspended matter is measured. Another part of the raw water is directed to the central gallery, where also coagulation of suspended substances is carried out in contact with the previously formed flakes of coagulated slurry, continuously coming here from the zone of suspended sediment. After passing through the layer of suspended sediment, the water is colored into the zone of clarified 2, and the excess of suspended sediment enters the central gallery through the slurry pipe of the front pipe 7. The clarified water is collected by a system of perforated pipes 8 and discharged to the pipe 9 into the collecting pocket 10 of clarified water. Another part of the water is located through the central gallery and enters the sedimentation zone 3 of the settling tank, where the opa after clarification is collected by the perforated gutters G.

The collection of compacted sludge is carried out using perforated boxes 14, from the dimensions of the chamber and the settler.

where it is installed in the central discharge channel 15, and then through pipe 16, a special installation for its dehydration is removed from the settling tank to the sludge beds. The mode of operation for horizontal slops is set as follows.

The valves on the pipes 11 and 12 of the raw water are opened in such a way that the volumes of water corresponding to the calculated flow rates enter the chamber of the slon formation and the precipitation zone. After that, the valve is opened on the pipe 9 for removal of clarified water so that the difference between the volume of water entering the chamber

flow through the nozzles 11 and the volume of clarified water discharged from the chamber equal to when suspended in the chamber are flocculated. This is a prerequisite for maintaining balance.

between the amount of suspended matter entering the slurry sediment zone and the amount of suspended matter entering the flocculation chamber together with raw water.

The table shows the results of technological calculation of the design of the described structure.

I Hydraulic steam meter

In a horizontal sump, a more efficient use of the flocculation chamber is provided; the volume of the lower part of the chamber is allowed for the zone of suspended sediment, the rest of the volume lying above for the zone of clarification, from the upper part of n) it is drained of drainage of clarified water using a system of perforated pipes. Due to this, the specific capacity of the settling tank and the proposed KONST1) operation is up to 2.70. M7h of clarified water from 1 meter, which is 60--70% (but compared to 1.6-1.7 gm) more than the specific production of the known clarifier . The speed of movement of water in the zone of suspension from the tank is 1 mm / s, and in the zone of clarification -), / 5 mm / s. The volume of suspended sediment discharged into the slurry bed is 25%. Shirpa

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o |) iso1: OTCToinn-iK talyy to lighten the airspace, divided by the vertical ric;) eroj) o; .Koii to the camera of the formation and drainage of clarified water and slugging zone, about one ton and ii, so that, in order to increase the capacity of the settling tank, the vertical partition has in the lower part; 1 hole, to which the central haulage is attached, equipped with sludge pipes, located in the bottom of the chlon formation chamber.

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FIG. four