SU1263296A1 - Radial settling tank - Google Patents

Abstract

1. RADIAL DRAWER, comprising a housing, a supply pipe with an h; central distributing device, an annular collecting chute, a rotating scraper mechanism, and a thin 7 / / (7ff layer module B) in the form of inclined radially arranged plates, characterized in that , it is equipped with reflective upper and lower disks located respectively above and below the distribution device, the plates of the thin-layer module are arcuate and fixed at one end to reflective x disks at an angle less than 90 ° to their tangent at the connection point, the thin-layer module being connected with the scraper mechanism. 2. The sump according to claim 1, characterized in that the plates are fixed on the reflective disks at an angle of 30 ° ; to their tangent, carried out at the point of connection. 3. A settler according to claims 1 and 2, distinguishing (L with the fact that the plates are made with transverse grooves on their convex side. N3 o: soy so o fia.} W

Description

The invention relates to settling tanks with

thin layer module

for industrial wastewater treatment.

The aim of the invention is to increase

liquid cleaning efficiency.

FIG. 1 shows a radial sump, a longitudinal section; in fig. 2 - the same plan view; in fig. 3 shows the layout of the plates of the vrash, ayush, and its thin-layer module.

The radial sump contains a cylindrical body 1, a supply pipe 2, connected to the central supply pipe 3, a pipe 4 for collecting sediment from land 5, an annular collecting chute 6 and a pipe 7 connected to it for discharging the clarified liquid.

The central inlet w; conduit 3 is connected to a distributor in the form of rings 8 installed one above the other, with internal diameters decreasing from bottom to top and different radial guides placed between the rings.

In the lower part of the housing 1 there is a scraper mechanism rotating on the support 10 and consisting of a truss 11 connected to the support 10, on the lower part of which the scrapers 12 are fixed.

The scraper mechanism from the drive 13 rotates.

On the farm 11 of the scraper mechanism a thin-layer module 14 is installed with a central hole 15 in which there is a distribution device.

The plates 16 of the thin-layer module 14 are located radially and fixed on the upper 17 and lower 18 reflective disks at an angle less than 90 ° to their tangent, held at the junction, the optimum angle of 30 °.

The disks 17 and 18 are fastened respectively with the upper and lower radial guides 9 of the distributor. The plates 16 of the thin layer module 14 are arcuate and inclined at an angle of 60 ° to the horizontal plane. On

the convex side of the plates 16 are made transverse gutters 19.

The sump works as follows.

Fiber-containing wastewater from pulp and paper production is fed to the switchgear through feed pipe 2 and central feed pipe 3. The drive 13 is turned on, which causes the raking device to rotate at a speed of 0.08 rpm. With the same speed in the direction of inclination and the convexity of the plates 16 begins to rotate the thin-layer module 14 mounted on the raking device and the distribution device.

Through the radial guides 9 of the distributor, the waste water enters the thin layer module 14. At the same time, the reflective disks 17 and 18 prevent it from entering the clarified liquid zone and the settling zone. The weighted fiber in the wastewater is deposited on the inclined plates 16 and then slides down and is moved by scrapers 12 to wet 5, from where it is removed through pipe 4 to collect sediment. The fine suspension, not precipitating from on the plates 16, gets into the transverse chutes 19, compresses due to the rotation of the module 14 and also slips into the settling zone.

With the passage of wastewater between the plates 16, their rotation and inclination to the horizontal plane precludes the ingress of water into the clarification zone. Therefore, the waste water enters the zone of clarification, passing the entire space between the plates 16, which ensures the deposition on them of the maximum number of suspended particles.

Purified water enters the annular collection chute 6 and is removed from the sump through the nozzle 7.

The table shows the performance indicators of wastewater treatment in the proposed radial sump compared with the prototype with different operating modes and different concentrations of suspended fiber in the wastewater.

1357.0

176.2

1172.0

88.5

437.0 39.5 82.7

1180.0

87.2

82.7

92.5

88.8 91.0 88.9 93.0 87.9

Claims (3)

1. RADIAL RESTAURANT, comprising a housing, a supply pipe with a central switchgear, an annular collecting chute, a rotating scraper mechanism and a thin-layer module in the form of inclined radially arranged plates, characterized in that, in order to increase the cleaning efficiency, it is provided with reflective upper and lower disks located respectively above and below the switchgear, the plates of the thin-layer module are made arcuate and at one end are mounted on reflective disks under an angle of less than 90 ° to their tangent drawn at the connection point, the thin-layer module being connected to the scraper mechanism. 2. Sump according to π. 1, characterized in that the plates are mounted on reflective disks at an angle of 30 ° to their tangent, held at the junction point. 3. The sump in paragraphs. 1 and 2, characterized in that the plates are made with transverse grooves on their convex side. to figure 1 1263296 A1