SU1360772A1 - Thin-layer settling tank - Google Patents

Abstract

The invention relates to the purification of natural waters from suspended substances by the method of gravitational sedimentation and makes it possible to increase the reliability of the foaming device. The sump contains a container I, a package of conical plates 3. A thin-layer float-forming chamber 4 is installed above the set of cathemic plates. The sump is provided with a foam-collecting annular collecting tray 10 with an inclined bottom and an overflow edge located horizontally above the water level. The load located at the bottom of the tray 10, with its corresponding location, compensates for the variable ejection force resulting from the different depths of the tray. 3 nl with C /) If with suitable Water Ostomna Osaka

Description

one

The invention relates to the treatment of wastewater from suspended matter mazgodom gravitational sedimentation.

The purpose of the invention is to increase the reliability of work.

FIG. - depicts a sump, general view; figure 2, the same, top view; on fig.Z - scan ring collecting tray.

The OTCToftiiHK consists of a cylindrical tank 1 and a bottom 2. In the tank 1 a package of conical tars 3 is mounted. A thin layer chamber 4 is formed of a flocculation with a package of asbestos cement sheets 5 on which aluminum sheets are hung. In the upper part of the flocculation chamber 4 there are prefabricated radial trays 6, in the lower part: a perforated pipeline 7 is mounted for supplying the source water.

The sump also contains pipelines 8 and 9 for removal of water and suspension, respectively; annular foam collector

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10 and cylinder 11 with windows and plates.

I,.

The baffle 10, located in the anchoring space 12, is a collection tray with an inclined bottom 3. The edges 14 of the tray rise above the level of the VYDY along the entire perimeter by the same height of the order .1 cm. its corresponding location compensates for the variable buoyancy resulting from the different depths of the tray. Along the radius located at the height difference, from the shallowest to the deepest part of the tray, the partition 16 is sealed. In the highest part of the tray, there is a suction nozzle 17, which is connected to the pipeline by a flexible hose channelization

Thin-bed settling works as follows.

The source water flows through conduit 7 into chamber 4 flocculation. Water with suspended sediment, poured into trays 6, enters the bag of plates 3 of the sedimentation tank, where the process of settling takes place. With the help of windows and plates, a cylinder 11 equates flow rates through the interbridge space. The settled water is collected by pipeline 8 and drains

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with on filters. The precipitate that falls out flows into the bottom part 2 and is periodically removed through pipeline 9 to the promissory section.

Foam removal from the retaining chamber 12 is performed by the annular foam collector 10 periodically at the time of foam on the surface 10 of the structure, which provides high sanitary and hygienic cleaning conditions with low mechanical energy costs and high reliability.

According to experimental data, foam appears 15 times every 5-10 days. In the days of foam, it is advisable to remove it 2-3 times a day with minimal loss of water removed with the foam. The operator of the sewage treatment plant with the appropriate device presses the edge of the tray at the point having the smallest depth. At the same time through the overflow edge 14 in the tray gets a portion of water with foam. This portion of water, 25 moving along the annular foam container 10, tells it to skew with respect to the horizontal plane. This bias moves around the entire circumference of the collection tray, as a result of which 30 different parts of the collection edges 14 are successively lowered below the water level, capture the latter along with the foam and transport along the inclined bottom 13 to the discharge port 17. 35 an ever-decreasing depth of the edges 14 until the energy is completely quenched. This oscillatory movement is like a 40 top movement in front of it. by the fall. At the same time, foam is removed from the entire surface.

The proposed device makes it possible to eliminate the bulkiness and increase the reliability of the operation of the skimming device.

Fore. Mule Invention

A thin-layer settling tank, which includes a tank, inside which is a package of conical plates, a cylinder with windows and plates, installed with the possibility of moving along

windows, a flocculation chamber, which is characterized by the fact that, in order to increase the reliability of operation, the sump is equipped with a skimming device installed in the upper part of the hull

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an annular collecting tray with an inclined female horizontally above the bottom and an overflow edge, positioned.

2

Editor P.Geershi

Compiled by T. Ledneva Tehred M. Morgental

6174/9

. Circulation 657. Subscription VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushrka nab. 4/5

Production and printing company, Uzhgorod, st. Design, 4.

fpuz.J

Proofreader L. Pilipenko

Claims (1)

Claims 5Q Thin-layer sedimentation tank, including a container, inside which there is a package of conical plates, a cylinder with windows and plates mounted to move along 55 windows, a flocculation chamber, characterized in that, in order to increase the reliability of operation, the sump is equipped with an annular collecting tray installed in the upper part of the casing ^J _o 1360772 with an inclined wife horizontally above the water level and overflow edge, located. Fi g. 2 Fig.Z