SU1327914A1 - Apparatus for purifying liquid from suspended matter - Google Patents

Abstract

This invention relates to devices for separating a fine suspension from a liquid by thin layer sedimentation using reagents. The aim of the invention is to increase the efficiency of extracting a fine suspension by more fully using the reagent. The device contains a reagent preparation unit, a mixing chamber, a flocculation chamber with an air distributor and perforated sludge supply pipes, a thin clarification chamber (CTO) with a sedimentary part and blocks of inclined plates with vertical canopies forming the upper and lower Russes. The device contains an additional flocculation chamber with an air distributor and perforated sludge supply pipes located on the outlet side of the KTO. At the exit of the lower CTO, there are additional mixing chambers with partitions on the upper and lower plates. Perforated reagent supply pipes are installed on the bottom rus at the entrance to the additional mixing chambers. To evenly distribute the fluid flow at the inlet and outlet of the flocculation chamber, louvered grilles are installed. The presence of an additional flocculation chamber provides for a more complete use of the reagent and an increase in the efficiency of the removal of a fine suspension. 1 3. p. F-ly, 7 ill. (O (L with o with

Description

The invention relates to devices for the purification of liquids from suspended solids and is intended for use in the circulating water supply system of enterprises, for example, concentrators, as well as in other national enterprises for separating solid particles from liquids.

The purpose of the invention is to increase the efficiency of cleaning fluid from a fine suspension by the effective use of reagents.

FIG. 1 shows the proposed device for cleaning liquid from polysilicate suspensions; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one; in fig. 4 shows a system of perforated pipes for feeding sludge into the flocculation chambers; in fig. 5 shows a system of perforated tubes for feeding the reagent to a second point ;, in FIG. 6 - partition wall chamber c. Mixing in the lower russ of the shelf unit of the thin-refining chamber; in fig. 7 is an axonometric diagram of a shelving unit.

The device comprises a supply pipe 1, a mixing chamber 2 containing a turbulent insertion 3, a main 4 and an additional 5 flocculation chambers, and an air distributor 7 is placed at the inlet and outlet of the main chambers 4 of the flocculation. and 8 and a perforated tube system 9 and. 10. The device also comprises a thin clarification chamber 11 with a sedimentary part 12. Thin clarifying chamber 11 contains thin-layer vertical blocks 13 consisting of inclined plates 14 with vertical visors 15. Sedimentary part 12 of the thin clarification chamber 11 and a vertical longitudinal channel between adjacent blocks 13 divided by partitions 16.

Thin-layer blocks 13 are divided into lower 17 and upper 18 Russes, at the exit of which perforated partitions 19 are installed. In the lower rus 17 of thin-layer vertical blocks 13 there are partitioned mixing chambers 20 formed by partitions 21 attached to plates 14 forming the lower rus. At the exit of the upper Russes 18, chutes 22 are located for collecting clarified water, connected to the pipeline 23 of clarified water connected to the receiver 24 of the vacuum pump 25.

Reagent preparation unit 26, pipes 27 and 28, perforated pipes 29 are provided for preparing, metering and supplying the reagent. Pipeline 30 and airlift 31 are provided for removal and circulation of sediment. Shut-off and control valves 32 are installed on the pipelines.

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The device works as follows.

Sewage water through pipe 1 enters the mixing chamber 2, where from the reagent preparation unit 26, the first portion of the reagent solution is supplied via line 27. After thorough mixing in chamber 2 by means of a turbulizing insert 3, the liquid enters the main chamber 4 of the flocculation. To evenly distribute the fluid in the volume of chamber 4, louvers and other grilles 6 are installed at the inlet and outlet of it. To intensify the flocculation process, air is supplied to chamber 4 through air distributor 7 and sediment from sedimentary part 12 of fine clarification chamber 11 through a system of perforated pipes 9. Slow mixing the original fluid with air, together with the previously deposited sediment, allows to obtain heavy dense flakes that are directed into the chamber 11 of fine clarification. A portion of the flakes and the most heavy suspension settles in chamber 4 and is removed through conduit 30. Since from the side of chamber 4 of flocculation, the upper Rus 18 of thin-layer vertical blocks 13 are blocked by grooves 22 to collect clarified water, water from the flocculation chamber 4 flows only into lower russians 17.

The uniform distribution of water across the Rus is ensured by the presence of perforated partitions 19 at the end of each lower floor. The flakes of the coagulated or flocculated suspension, moving in the laminar flow of the inter-shelf space, are moved down until they come in contact with the plates 14, then slide along them and along the vertical channel formed by the visors 15, are collected in the sedimentary part 12 of the thin branch 11. At the exit of their lower ranks 17 of the shelving unit 13 from the reagent preparation unit 26, pipelines 28 and 29 dispense a second portion of the reagent for the unsettled slurry and T1tsective movement of the liquid with the reagent in the partitioned mixing chamber 20.

The passage through the perforated partitions 19, the liquid enters the additional flocculation chamber 5, the quota of fine clarification from the sediment part 12 of the chamber 11 enters through the perforated pipe system 10, and the air for mixing and maintaining the heavy flakes in suspension. In the chamber 5, the process of flocculation of a previously unsettled suspension takes place, and the liquid enters the upper Russ 18 of the shelf units 13, the uniform distribution of the liquid in which is ensured by perforated partitions 19

at the exit of the upper russa 18 of the block 13. The flakes of the coagulated and spontaneous suspension, moving in the laminar flow of the inter-shelf space, move downward until they come into contact with the plates 14, then slide along them and along the vertical channel formed by the canopies 15, are collected in the sedimentary part 12 of the thin-clarification chamber 11. The vertical longitudinal channel in which the sediment is collected is divided by partitions 16, which impede the movement of the liquid and improve the process of compacting the sediment. Special slots are provided at the bottom of the partition walls 16 to remove sediment. The clarified water passes through the partition 19 and enters the chutes 22 to collect the clarified water, from where, under the action of a vacuum, the pipeline 23 enters the receiver 24 connected to the vacuum pump 25 and then to the consumer. The sediment accumulated in the sedimentary part 12, by means of airlift 31, is fed to the systems of perforated pipes 9 and 10 located in chambers 4 and 5 of the flocculation. For proper operation of the device, shut-off and adjusting fittings 32 are used. Thus, in the proposed device, an additional flocculation chamber combined with a thin clarification chamber, perforated pipes placed in the flocculation chamber and connected to the sedimentary part of the thin clarification chamber, partitioned mixing chambers, allows you to more efficiently use the reagent, reduce the length of the fine clarification chamber and increase the effect of cleaning the liquid by removing finely dispersed oh suspension

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Claims (2)

Claim 1. Device for cleaning liquid from suspended substances, containing successively connected adjacency chamber, flocculation chamber with air distributor, thin clarification chamber with sedimentary part and blocks of inclined plates, fitted with vertical canopies located at their lower edges and forming upper and lower rushes, pipelines supplying the initial liquid and removing the clarified liquid and sediment, characterized in that, in order to increase the efficiency of extracting a fine suspension by more fully using the reagent, it is equipped with a reagent preparation unit placed on the outlet side of the fine clarification chamber with an additional flocculation chamber with an air distributor and perforated sludge supply pipes connected to the sedimentary part of the fine clarification chamber, the lower arms of the block of inclined plates are equipped with partitions installed the gap on the lower and upper plates with the formation of additional mixing chambers, and perforated reagent supply pipes located entering the additional mixing chamber and connected to the node prigotov, 1eni reagent, wherein the main camera is provided with perforated pipes flocculation sludge supply connected to the chamber part sedimentary fine clarification. 2. The device according to claim 1, characterized in that, in order to evenly distribute the fluid flow in the cross section of the flocculation chamber, the latter is provided with louvre grids installed at the inlet and outlet. fuzJ / 7 - / 7 Z5 J23D A / T7-1P /  PJ / J /five Bb /four / S / 7 .2 Fig.Z faz. eleven 29 21  reagent Z8 20 21 29 one 18/7 Fi.g.7 Compiled by T. Ledneva Editor A. VorovichTechred I. VeresKorrektor G. Reshetnik Order 3421/6 Circulation 656 Subscription VNIIPI USSR State Committee (cases of inventions and discoveries 1 13035, Moscow, Zh-35, Raushsk nab. 4/5 Production and printing company, Uzhgorod, ul. Project; -1a, 4