SU1533730A1 - Thin-layer settling tank - Google Patents

Abstract

The invention relates to devices for separating heterogeneous systems from the liquid phase and can be used to purify natural and waste waters containing, for example, petroleum products, oils, suspended solids. The aim of the invention is to increase the efficiency of use of the device by improving the conditions for removing sludge and oil products from the surface of the plates of a thin-layer sump. The thin lagoon contains a body, a thin layer module (TM), the plates of which are made in the form of endless ribbons placed with tension between the upper and lower horizontal rods. The rods are made with an anti-slip coating and are rotatably mounted. Scrapers to remove sediment from the surface of the TM plates are located at the bottom of the rods and are fixed between the side walls of the sump. The use of a settling tank makes it possible to improve the conditions for the removal of the formed sediment and oil products from the surface of the plates, regardless of the properties of the sediment and the material of the plates without stopping it. 3 il.

Description

f

. (21) 4342960 / 23-26 (22) 12.15.87 (46) 07.01.90. Bul N5 1

(71) Baku branch of the All-Union Scientific Research Institute of Water Supply, Sewerage, Hydraulic Structures and Engineering Hydrogeology of WODGEO

(72) Sh.I.Ismailov and E.A.Suleymanov

(53) 628.336 (088.8)

(56) USSR Author's Certificate No. 586130, cl. On 01 D 21/00, 1975.

USSR author's certificate If 842039, cl. C 02 F 1/52, 1977.

(54) THIN LAYER DRAWER

(57) The invention relates to devices for separating heterogeneous systems from the liquid phase and can be used to purify natural and waste waters containing, for example, petroleum products, oils, suspended solids. The aim of the invention is to increase

efficiency of use of the device by improving the conditions for removing sludge and oil products from the surface of the plates of a thin-layer sump. The thin lagoon contains a body, a thin layer module (TM), the plates of which are made in the form of endless ribbons placed with tension between the upper and lower horizontal rods. The rods are anti-slip and coated and rotatably mounted. Scrapers to remove sediment from the surface of the TM plates are located at the bottom of the rods and are fixed between the side walls of the sump. The use of a settling tank makes it possible to improve the conditions for the removal of the formed sediment and oil products from the surface of the plates, regardless of the properties of the sediment and the material of the plates without stopping it. 3 il.

with

but

(L

I

The invention relates to devices for separating heterogeneous systems from the liquid phase and can be used to purify natural and waste waters containing, for example, oil products, oils and suspended solids.

The purpose of the invention is to increase the efficiency of the device by improving the conditions for removing sludge and oil from the surface of the plates.

FIG. 1 shows the proposed settling tank, longitudinal section; in fig. 2 - the same, top view; FIG. 3 — node I in FIG. one.

The thin lagoon contains a body 1, a water distributor 2, a collector 3 of purified liquid, a thin layer module with plates and fixtures for fixing the plates and removing sludge, a conveyor 4 for transporting sludge, a hopper 5 for collecting it, piping 6 for supplying the treated wastewater, 7 dl removal of purified liquid and 8 for removal of sediment.

In the upper and lower parts of the tank of the sump, respectively, the upper 9 and lower 10 rows of rods with anti-slip coating are placed

ate

go j go

11, for example rubber. The rods are located on horizontal axes and are made with the possibility of their free rotation.

Each plate of the thin-layer module is made in the form of an endless tape 12 of a film, for example polyethylene, and is placed with tension between the respective upper and lower rods, provided with a scraper 13 to remove sediment from the surface of the plates located at the lower rod and fixed between the side walls of the settler, and also driven to drive the plate in motion.

The drive consists of an electric motor 1, a block of disks 15 with grooves located above the settler, a belt drive 16, disks 17 with grooves located coaxially on the upper rods.

For placing discs 17 settler

ten

15

20

15 with grooves, then the movement by belt transmission 16 transfers from to the upper rods using disks 17 with grooves. The movement is then transmitted to the endless belt in connection with the fact that it is placed with tension between the corresponding upper 9 and lower 10 rods with an anti-slip coating 1 freely rotating on the horizontal axis. The speed of movement of the endless belt should not exceed the speed of movement of the thin layer flow.

Flooded contaminants (whose specific gravity is less than the specific gravity of water) rise from the thin layer of water to the surface of the liquid to be cleaned and enter the collection pocket for floating contaminants 20. Purified water enters collection 3, and then through pipeline 7 is drained from the sump.

Using the proposed tone30

35

It is equipped with a side pocket 18. For a pre-25 layer-lagoon, it is possible to prevent the sediment from being carried out. The sump is equipped with a partition 19 separating the settling zone of the sump from the drainage unit of the purified liquid. A dividing pocket is located on the partition wall 19 for removing floating contaminants 20.

The device works as follows.

The wastewater to be purified goes to the water distributor 2, and then to the settling zone a settling basin, where it is divided into thin-layer flows, each of which moves from top to bottom along the surface of the plates. In the direction of movement of the thin layer water flow, inhomogeneous systems are separated from the liquid phase.

The sediment accumulating on the surface of the plates is removed from it by driving the endless belt 12 and the scraper 13. Next, the sediment is deposited on the conveyor belt k, fed into the bunker 5 for the sediment, and then discharged through the pipeline 8 from the sump.

The infinite ribbon is shown in; movement as follows.

By means of the electric motor 1, the dis40 block is first set in motion

45

50

to improve the removal of sediment and oil products from the surface of the plates, regardless of the properties of the sediment and the material of the plates without stopping the settling tank, to automate the process of removing the sediment from these structures.

Claims (1)

Invention Formula A thin layer settling tank, comprising a housing, a thin layer module, the plates of which are made of a film material placed with tension between the upper and lower horizontal rods, the inlets of the treated waste water and the discharge of the purified liquid and sediment, differing from the fact that working efficiency by improving the conditions for removing sediment and oil products from the surface of the plate, it is equipped with scrapers fixed on the side walls of the body at the lower rods of the plates, made in the form of endless ribbons, with this m upper and lower rods are made with coated anti crept and tired Lena rotatably. five 0 with grooves 15, then movement by belt transmission 16 is transmitted to the upper rods using grooved disks 17. The movement is then transmitted to the endless belt in connection with the fact that it is placed with tension between the corresponding upper 9 and lower 10 rods with an anti-slip coating 11 freely rotating on the horizontal axis. The speed of movement of the endless belt must not exceed the speed of movement of the thin layer flow. Flooded contaminants (whose specific gravity is smaller than the specific gravity of water) rise from the thin layer of water to the surface of the liquid to be purified and enter the collection pocket for floating contaminants 20. Purified water enters collection 3, and then through line 7 discharges from the sump. Use the proposed tone five lagoon provides an opportunity 0 five 0 to improve the removal of sludge and oil from the surface of the plates, regardless of the properties of the sludge and the material of the plates without stopping the sump, to automate the process of removing sludge from these structures. Invention Formula A thin layer settling tank, comprising a housing, a thin layer module, the plates of which are made of a film material placed with tension between the upper and lower horizontal rods, the input units of the treated wastewater and the drainage of the purified liquid and sludge, characterized in that by improving the conditions for removing sediment and oil products from the surface of the plates, it is equipped with scrapers fixed on the side walls of the casing at the lower rods of the plates made in the form of endless ribbons and this upper and lower rods are made with an anti-slip coating and are rotatably mounted. A. Motyl .-7/7 17 16 1B FIG. g Compiled by T. Ledneva Tehred L. Serdyukova Schig.1 I 3 Proofreader E.Lonchakl