RU2006248C1 - Vertical settler - Google Patents

Abstract

FIELD: purification of natural and waste water. SUBSTANCE: settler has reservoir 1, cylindrical hollow partition 2 separating reservoir into intake and selling chambers 3 and 4, spiral guide 5, receiving hopper 6, tangential intake branch pipe 7 and circular tray 8 for withdrawal of purified water. Partition 2 has openings 10 for feeding fluid into intake chamber 3. Hopper 6 have beaded slit to receive floating substances. Outer wall of partition 2 has hole for flowing floating substances to hopper 6. Intake chamber 3 is provided with drainage pipe. In rising rotating flow in chamber 11 floating substances come to the surface and form layer which through opening flows to hopper 6. Partly purified water through openings 10 flows to chamber 3 where its further separation takes place. EFFECT: enhanced purifying capability. 4 dwg

Description

 The invention relates to equipment for wastewater treatment, in particular to vertical sumps, and can be used in the treatment stages of agricultural, industrial and domestic facilities.

 Known vertical sump containing a tank with a coaxially placed cylindrical partition, a supply pipe, an annular tray for draining clarified liquid and a receiving funnel for removing floating contaminants [1].

 The disadvantage of this device is the low removal efficiency of substances floating on its surface, which does not provide the required quality of water treatment.

 The closest technical solution to the invention in its essence and the achieved result is a vertical sump containing a cylindrical tank, inside of which a cylindrical partition coaxially placed in the upper part separating the tank into a receiving and settling chamber, a semi-submersible spiral guide placed in a settling chamber equipped with an opening for discharge of floating contaminants into a receiving funnel placed in a settling chamber, an eccentrically installed inlet pipe and tsevoy tray for discharging clarified water [2].

 In the known sump, due to the installation of a semi-submersible spiral guide, the removal efficiency of floating substances is slightly increased. However, due to the fact that the inlet pipe pours the initial liquid directly onto the liquid surface in the receiving chamber, the floating substances do not have enough time to float to the surface (exfoliate), which leads to the removal of floating substances diluted with a significant amount of the initial water into the receiving funnel, which leads to increased costs for the subsequent separation of water from floating substances.

 The purpose of the invention is to increase the efficiency of the removal of floating substances.

 This goal is achieved by the fact that in the inventive vertical sump containing a cylindrical tank, inside of which a cylindrical partition coaxially placed in the upper part separating the tank into the receiving and settling chambers, a semi-submersible spiral guide placed in the settling chamber, equipped with an opening for the discharge of floating substances into the receiving a funnel placed in a settling chamber, an inlet pipe and an annular tray for draining clarified water, according to the invention, a cylindrical partition odka is hollow with an open upper portion, provided with an opening for draining floating substances in the hopper and placed under windows spiral guide to feed liquid into the receiving chamber, and the inlet is tangentially connected to the lower part of the cylindrical wall of the cavity.

 The implementation of a cylindrical partition hollow with an open upper part, supplying this cavity with an opening for draining floating substances into the receiving funnel and windows located under the spiral guide for supplying liquid to the receiving chamber, as well as connecting the inlet pipe to the lower part of the cavity of the cylindrical partition, allows creating more favorable conditions for the floating substances to emerge and to facilitate their diversion into the receiving funnel in a more concentrated form.

 In FIG. 1 shows a diagram of the inventive sump, General view; in FIG. 2 is a section AA in FIG. 1; in FIG. 3 is a section BB in FIG. 1; in FIG. 4 - node I in FIG. 1.

 The vertical sump contains a cylinder-conical tank 1, inside of which a cylindrical partition 2 is coaxially placed in the upper part, dividing the tank into the receiving and settling chambers 3 and 4, a semi-immersed spiral guide 5 placed in the settling chamber, a receiving funnel 6 placed in the settling chamber, installed tangentially the inlet pipe 7 and the annular tray 8 with a pipe 9 for draining clarified water.

 The cylindrical partition 2 is hollow with an open upper part. The inner wall of the partition 2 is provided with windows 10 for supplying liquid to the receiving chamber 3. The windows 10 are placed under the spiral guide 5. The inlet pipe 7 is connected to the lower part of the cavity 11 of the partition 2.

 The receiving funnel 6 is equipped with a horizontal slot 12 for collecting floating substances with an inclined flange 13 and a pipe 14 for removing floating substances. The outer wall of the partition 2 in its upper part is provided with an opening 15 for draining floating contaminants from the cavity 11 of the partition into the funnel 6. The narrowing gap formed by the inner wall of the partition 2 and the adjacent end of the spiral guide 5 is provided with a drain pipe 16. The lower conical part of the tank is equipped with a nozzle 17 for removal of sediment.

 Vertical sump works as follows.

 Wastewater is fed into the cavity 11 of the partition 2 along the tangential inlet pipe 7 and gradually rises upward with a rotating upward flow. Floating substances with a lower specific gravity rise up faster than water, accumulate in the upper part of the cavity 11 and merge through the hole 15 into the funnel 6. Since the ascending time of the water flow and its spiral path in the cavity 11 is significant, floating substances this time has time to rise in its main volume, which leads to a significant thickness of the layer of floating substances in the cavity 11 due to the limited width of this cavity. This allows you to drain through the hole 15 into the funnel 6 of floating substances without water, for which the hole 15 is placed slightly above the interface - floating substance-water.

 Water, partially purified from floating substances in the cavity 11, is discharged through the windows 10 into the receiving chamber 3, where it loses the rotation speed. In this case, the remains of floating substances float up and, under the action of water rotation, are sent to a narrowing gap between the spiral guide 5 and the wall of the partition 2, where they merge through a tube 16 into a funnel 6.

 Additionally, the water purified in the receiving chamber 3 falls down, is separated from the sediment, which falls into the lower part of the tank 1, goes around the lower part of the partition 2 and rises along the settling chamber 4 with a slow rotating flow. In this case, the remaining floating substances float to the surface of the chamber 4 and due to the slow rotational movement of water in the chamber 4 is pushed onto the inclined flange 13 and then flows through the hole 12 into the funnel 6, from where it is discharged from the sump through the pipe 14.

 The clarified liquid is discharged into the annular tray 8 and sent to the consumer through the pipe 9.

 The technical and economic efficiency of the proposed sedimentation tank consists in increasing the efficiency of the removal of floating substances through the use of an additional cleaning stage in the cavity of the cylindrical partition, where the main separation of floating substances and water is carried out due to the organization of an upward rotating flow of source water in a limited space, which allows to increase the time for separation and increase the thickness of the floating substances due to the limited gap between the walls of the cylindrical partition. The increased thickness of floating substances, in turn, allows you to place a drain hole not at the interface - water-floating substance, but above this boundary, which eliminates the ingress of water into the receiving funnel. This allows you to increase the concentration of floating substances discharged into the receiving funnel up to 20-30%. (56) Yakovlev S.V. et al. Sewerage. M.: Stroyizdat, 1975, p. 243-245.

 USSR author's certificate N 1125013, cl. B 01 D 21/24, 1984.

Claims (1)

 A VERTICAL RESTAURANT containing a cylindrical conical tank, inside of which a cylindrical baffle is coaxially located, dividing it into a receiving and settling chamber, a semi-submersible spiral guide installed in the receiving chamber, a receiving funnel for removing floating substances in the settling chamber, communicating with the gap formed by the cylindrical partition and the bridging to it the end of the spiral guide, the inlet pipe and the annular tray for draining clarified water, characterized in that, in order to increase the efficiency of removing floating substances, the cylindrical partition is hollow with an open upper part, an opening for draining floating substances into the receiving funnel and windows for supplying liquid to the receiving chamber located under the spiral guide, while the inlet pipe is tangentially connected to the lower part of the cylindrical cavity partitions.

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