SU1657214A1 - Unit for treatment of natural water and sewage - Google Patents

Abstract

The invention relates to the technology of purification of natural and waste water by settling using coagulants and flocculants. The purpose of the invention is to expand the functionality and reduce metal consumption. The plant for the purification of natural and waste waters contains mixing, flocculation and a thin-layer settling tank with a clarified water chamber and sedimentary part located in the Korg Bus, from top to bottom. To flush sediment from the plates of the sump in the chamber of the clarified water is a pipe with nozzles connected to the supply pipes of industrial water. The floating substances along the settler plates are directed upwards and collected on the surface of the water in the tray to collect them. In the flocculation chamber, a flow divider and an air outlet pipe are installed. The sediment trapped in the sedimentation tank slides down along the plates and enters the sedimentary part, from which it is constantly and periodically removed through the pipeline, 2 sludge. I v)

Description

The invention relates to the technology of purification of natural and waste water by settling using coagulants and flocculants.

The purpose of the invention is to expand the functionality and reduce metal consumption.

FIG. 1 shows a plant for the purification of natural and waste waters, a longitudinal section; in fig. 2 - the same, top view.

The installation comprises a housing 1 with a mixing chamber 2, a flocculation chamber 3, a thin settling tank 4 with a clarified water chamber 5 and sediment part 6 placed in it from top to bottom. The source water supply pipe 7 is tangentially connected to the mixing chamber 2. The mixing chamber 2 is separated from the chamber 3 by flocculation by an inclined bottom 8, in which the bypass opening 9 is made.

The float-forming chamber 3 is provided with an air exhaust pipe 10 installed in its upper part, a flow divider 11 located between the mixing chamber 2 and the settling tank 4, a collector 12 with a distribution partition 13 in which holes are made 14. In the clarified water chamber 5 the settling tank 4 is located 16

A device for flushing the sediment from the plates 15, which consists of a drum 16 with a cable-block system 17, a pipe 18 with nozzles, connected by means of a hose 19 to a process water supply pipe 20, and guides 21. A tray 22 with partitions 23 for collecting the floating substances and the discharge nozzle 24. The nozzles are arranged parallel to the plates of the settling tank 4. The sedimentary part 6 is equipped with a sludge discharge line 25.

The installation works as follows.

The source water through the pipe 7, supplied to the body 1 of the installation tangentially, under pressure enters the mixing chamber 2. A coagulant is introduced into the flow of water flowing out of the nozzle 7. Due to the circular movement, the coagulum is intensively mixed with the water to be purified under the velocity pressure of the coagulum. At the same time, air separation occurs, which also contributes to the mixing of water and coagulum. The water is then directed into the flocculation chamber 3 through the opening 9 in the bottoms 8 of the mixing chamber 2, which is made with a slope towards the opening 9, which prevents coarse particles from depositing in the mixing chamber 2.

The position of the hole 9 is determined by the need to maximize the use of the volume of the chamber 3 flocculation. For the same purpose, a flow divider 11 is installed in the flocculation chamber 3. Remains of air bubbles are collected at the top of chamber 3 and discharged through pipe 10. If necessary, flocculents can be led to opening 9, which quickly mixes with the entire volume of water being purified due to a sharp contraction and expansion of the flow. From the flocculation chamber 3, water enters the collector 12 and through the distribution partition 13 and the holes 14 therein is evenly distributed over the plates of the thin-layer clarifier 4. The clarified water enters the chamber 5, from which it is directed to the tray 22, the partition 23 passes in a zigzag manner installation through the pipe 24. Caused in the sump 4 sediment slides down the plates and falls into

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the sediment part 6, from where it is continuously or periodically removed by pipeline 25. Pop-up pollutants along the plates of the sump 4 are directed upwards and collected on the surface of the water in the tray 22, the level of which is determined by the height of the outer partitions 23.

Periodically, the interplate plate of the settling tank 4 is silted by adhering sediment formed by oil and petroleum products and finely dispersed suspended substances. In this case, the installation is turned off, water is released and the sump is rinsed. To do this, water is supplied through the pipe 20 through the hose 19 to the pipe 18 with nozzles. The angle of inclination of the nozzles corresponds to the angle of inclination of the plates in the sump 4. Due to the rotation of the drum 16 driven by the cable block system 17, the pipeline 18 performs a reciprocating

movement along the guides 21. After flushing the sump, the unit is again put into operation.

Installation is compact, has minimum dimensions in terms of, is easy to

cooking and maintenance.

In addition, the cylindrical shape of the installation provides the minimum possible consumption of metal required for its manufacture, while maintaining the rigidity of the structure.

Increasing the capacity of the plant by increasing the height of its component nodes will in all cases preserve the transport gauge, which meets the requirements of transportation.

Claims (1)

The expansion of the functionality of the proposed installation as compared to the known one is as follows: firstly, the light location of the mixing chamber, flocculation chamber, thin-layer clarifier with the clarification chamber and the sedimentary part allows concentrating the whole preliminary water purification cycle in one installation case; secondly, the presence of a remote chute 22 with partitions 23 allows to complete the process of trapping oil products and concentrate them on a small free surface of water. Invention Formula A plant for the purification of natural and waste waters containing placed I in the case of the mixing and flocculation chambers, a thin-layer settling tank with inclined elements, a clarified water chamber and a sedimentary part, a feed water supply pipe and a drainage of clarified water and sediment, characterized in that, in order to expand the functionality and reduce metal consumption, the mixing chamber, flocculation and a thin layer settler are arranged sequentially one below the other along the height of the body; the inclined elements of the settler are made in the form of plates; sixteen t Air exhaust 10 "Koa gul l 22 23 It Cleaned /, vooa  Water for l // tl inclined plates 25 Fi & 1 St 1657214 populating substances connected to the clarified water chamber and installed in the latter with the possibility of vertical movement by a device for flushing the sediment from the settling plates made in the form of a pipe with nozzles connected to the process water supply nozzle, the nozzles are located under yi equal to the tilt angle of the settling plates, the mixing chamber is made with an inclined bottom with a hole, and the flocculation chamber is equipped with 5 with a flow divider and air intake. Source Ootfa Compiled by T. Ledneva Editor T. Ivanova Tehred M. Morgental 2 Proofreader A. Obruchar