SU1745690A1 - Clarifier with suspended precipitate for water purification - Google Patents

Abstract

The invention relates to the field of water supply and sewage, in particular, to structures of drinking and wastewater treatment facilities. The purpose of the invention is to improve the performance of the clarifier. A suspended sediment clarifier for water purification contains a reservoir with suspended sediment zones, clarification and a sediment seal in which a floating load is located. 13 il.

Description

The invention relates to water supply and sewage, in particular, to structures for drinking and wastewater treatment plants.

Sediment clarifiers are the main structure for pre-clarifying water before being fed to high-speed filters.

Known designs of clarifiers with suspended sediment of the corridor type and the type of accelerator and superpulsator.

The disadvantage of the corridor clarifier design is that this clarifier consists of three corridors, occupies a lot of space, the capital construction costs are large, the formed suspended sediment is loose and light, and because of this the uplifting speed of a small charge of the clarifier takes a long time reacts to changes in water flow and temperature.

The disadvantage of the clarifier VNIIGS-2 is that the building is circular in plan, occupying a lot of clarifiers, occupies a lot of space, the condensator is under the bottom, which makes it difficult

operation during repair and sediment removal, and due to the absence of air outflow, the water under the bottom acquires an unpleasant odor and taste, the distribution of the source water inside the cooler is difficult, many communications, the suspended sediment is light and the rate of water rise is small.

In the clarifier AzNIIVP-2 there is no forced suction of excess sediment, to suppress the vortex-like movement of water, complex vertical partitions are provided. Tubular systems are provided to intensify the deposition of suspended solids, and this increases the height of the structure.

The design of the clarifier TSNII-3 is very complex, the flakes formed are friable and light and therefore the rate of water rise is low.

The design of the clarifier-accelerator is also complex. The design of the super pulsator is simpler, but there are drawbacks: the water is supplied with a pulsation, a device is required to quench the flow energy, there is no forced suction of excess sediment from the zone of suspended sediment. Siege

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the co-sealer is in one side and sediment does not flow to such an sealer by gravity flow. The advantage of the super pulsator is the use of a tubular system.

The closest to the proposed technical essence and the achieved result is the design of VNIIGS-2.

The main disadvantage of this clarifier is the low rate of clarification, the presence of a pallet, the complex structure of the distribution system, and the roundness in the plan.

The purpose of the invention is to improve the performance of the clarifier.

This goal is achieved by the fact that for purification of water a quadrilateral clarifier with forced suction of excess sediment, without a tray, is proposed, to increase the rate of water clarification, the clarification zone, the suspended sediment zone, and the clarified water drainage zone from the sediment accumulation zone are flooded. At the same time, the zone of suspended sediment is loaded by loading with such specific gravity, which for a given speed of water rise is suspended in the height of the suspended sediment. Typically, this specific weight of the load is in the range of 1 -1.4 t / m. The zone of clarification, as well as the zone of removal of clarified water from the sediment accumulation zone, are loaded with a charge with a specific weight less than the specific gravity of water. All this allows to intensify the processes of water clarification, reduce capital and operating costs and reduce the cost of the treated water.

Figure 1 and 2 shows the proposed clarifier, section; fig and 3 - the same plan, figure 5-13-known clarifiers.

A suspended sediment clarifier contains a quadrangular structure with feed pipes 1 above the sediment accumulation zone 4 and drainage devices 6 at the top, 5 devices for draining excess sediment from the top of the suspended sediment zone 2, with an inclined partition with a lower open part for placing the drain pipe clarified water 9 sediment packers 8 and for settling water. The bottom of the clarifier has a slope in the middle where a tray 12 is provided for draining the sediment to the outside. In the corners in the corner part there are hole-type pipes 11 for washing the sediment with water when the sediment is removed from the sediment seal 8. The clarification zone 3, the suspended sediment zone 2 and the drainable zone of the clarified water from the sediment accumulation zone 8

loaded with a floating load, with meshes on the lower and upper sides.

Clarifier with suspended sediment for water purification works as follows,

The source water through perforated pipes 1 is fed into the clarifier, the holes are directed upwards, a layer of suspended sediment 2 is created, above which there is a zone of clarification 3. Under the layer of suspended sediment there is a sediment accumulation zone 4. From the upper boundary of the suspended sediment, extra sediment is discharged through vertically arranged channels 5 in the zone of compaction of the sediment 4. The clarified water from the zone of clarification enters the trays 6 arranged from two sides near the wall and is withdrawn to the large tray 7 located on the front side of the clarifier.

From the zone of the precipitator, water is collected through the perforated pipes 9 and discharged into a large tray 7. The clarified water in the zone of clarification is connected to water clarified in the zone of the condenser. From the large tray 7, the clarified water is discharged outside through the pipes 13.

The rate of water rise in the clarifier is regulated by the valves 10, which are installed at the end of the pipeline to drain the clarified water from the zone of the precipitator.

To intensify water clarification, the clarification zone 3, the suspended sediment zone 2, and the clarified water drainage zone from the sediment accumulation zone 8 are loaded with a floating load, while the bright zone 3 and the clarified water drainage zone of the compactor 8 are loaded with a floating load with a specific weight less than specific the weight of the water, and the zone of suspended sediment is loaded with a load of such a specific gravity, which for the assumed rate of water rise is loading in a suspended state. f

The size of the loading of the clarification zone 3 and the zone of diversion of water from the zone of the precipitator is 20–100 mm. The size of the load zone suspended sediment 4-20 mm.

Between the zones, as well as on the lower side and on the upper side of the zone, there is a grid 14 with cells 5 mm less than the loading size for loading with a size of 20-100 mm, and 2-5 mm less than loading size for loading with a size of 4-20 mm.

The precipitate from the precipitator is discharged by washing with water supplied through pipes 11 with fittings directed at an angle towards the sediment, and the sediment is discharged outside through the trays 12.

Plastics, foam glass, polyurethane, tuff, expanded clay and other materials are used as the material for floating loading.

When using a clarifier with suspended sediment for water purification, capital and operating costs are reduced and the cost of treated water is reduced by 1.5 times compared with conventional clarifiers with suspended sediment.

The rate of clarification of water increases by 1.5-2 times compared with the known clarifier.

In the clarifier VNIIGS-2 (Fig. 5), water is supplied through pipes 1 to the central pipe 2 and is distributed through perforated pipes 3 located in the radial direction. Water leaving the pipe 3 rises up and forms a layer of suspended sediment 4. The latter is loaded with a floating load of such a specific weight for which the loading is in a suspended state. Feed size 4-20 mm. Then the water rises up to the zone of clarification 5, and the excess sediment enters the sediment accumulation zone 6 through vertical pipes.

The water clarification zone is loaded with a floating load with a specific weight less than the specific weight of water, with a particle size of 20-100 mm. The clarified water from the clarification zone is discharged through trays 8. In the sediment accumulation zone, the water is also clarified and discharged through perforated pipes 9.

The zone of removal of clarified water from the sediment accumulation zone is also loaded with a floating load with a specific weight less than the specific weight of water with a particle size of 20-100 mm. In order to create a longer path for clarified water, partitions 12 are provided in the sediment accumulation zone. The suspended sediment zone on the top and bottom sides is fenced with a grid with cells 2-5 mm smaller than the loading size. The upper opening of the vertical pipe 7 is also covered with a grid. The clarifier precipitate is discharged through pipes 11 by flushing with water supplied through pipes 10.

In the rectangular clarifier (Fig. 6), water is supplied through perforated pipes 1 and directed upwards, the passage cone part 2 flows into the zone of suspended sediment of clarifier 3. The zone of suspended sediment is loaded with a specific gravity load, at which the load is for a given lifting speed water in suspension. Feed size 4-20 mm. Then the water enters the zone of clarification 4. And the excess sediment through the windows 5 enters the

sediment accumulation zone 6. The clarification zone 4 is loaded with a load with a specific weight less than the specific weight of water. Loading size 20 - 100 mm. The clarified water is discharged into the trays 7.

In the sediment accumulation zone, part of the sediment settles, and part of the sediment rises with water and is retained in loading 8 with a specific weight less than the specific weight of water, and the illuminated water is discharged through perforated pipes

9. The floating load of the zone of suspended sediment 3 is fenced with nets above and below with cells 2 to 5 mm smaller than the size of the load. Such a grid fenced window

5 removal of sediment in the sedimentation.

The floating loading of the water clarification zone from the upper side is enclosed with a grid with cells 5 mm smaller than the loading size. Grids fenced loading zone

Sediment accumulation 8 with grid cells is 5 mm less than the loading size.

Water pollution as it accumulates inside the load of the clarification zone 4 is deposited in the zones of suspended sediment, and

5, the water accumulated in the floating load of the sediment accumulation zone 8 is deposited and flows down into zone b and is discharged through perforated pipes 11.

The clarifier TsNII-3 (Fig.7) source

0, water is supplied through conduit 1 to the air blower 2, then water flows through the drain 3 and along branches 4 enters the suspended sediment zone of the clarifier 5, rises up, enters the clarification zone 6 and

5 is discharged out through the pipes of clarified water 8. Excess sediment from the upper boundary of the zone of suspended sediment flows through the sludge separator 9 to the sediment compactor

10. Suspended substances settle down, and 0 part of the suspension with water rises and

delayed loading. The clarified water in the precipitator is discharged through pipes 11 and connected to tray 7.

To intensify water clarification

5, the zone of suspended sediment 5 is loaded with a floating load with such a specific gravity, for the assumed lifting speed of which is in a suspended state. Feed size 4-20 mm. Floating

0 loading is fenced with nets with cells 2 to 5 mm less than the loading size.

The water clarification zone b is loaded by loading with a specific weight less than the specific weight of water. Download size 20 - 100

5 mm. The floating loading of the lightening zone on the upper side is fenced with nets with cells 5 mm less than the loading size.

Sediment accumulation zone 10 is also loaded with a floating load with a specific

weighing less than the specific gravity of water and a particle size of 20 - 100 mm. This load is also enclosed by grids with cells 5 mm smaller than the size of the load. The precipitate from the precipitator is removed through conduit 12.

In the clarifier of the AzNIIVP-2 construction (Fig. 8), the source water is supplied through pipe 1 and enters sediment accumulation zone 2. Then the water rises up and enters suspended sediment zone 3 and clarification zone 4. The clarification zone is divided by partitions 5 by distance 50 -60 cm from each other. Then the water enters the collection trays 6, is discharged to the side tray 7 and out through the pipeline 8.

Suspended sediment zone 3 is loaded with a load of such specific gravity, for the assumed speed of which is in a suspended state, with a particle size of 4-20 mm. The load from the bottom and from the top side is enclosed by a grid with cells 2-5 mm less than the grain size of the load.

The lightening zone 4 is also loaded with a floating load with a specific weight less than the specific gravity of water with a particle size of 20-100 mm. On the upper side, the loading is fenced with a grid with cells 5 mm less than the loading size. The precipitate from the precipitator is discharged by washing with water supplied through pipes 9 with fittings directed towards the sediment. Outflow is carried out through pipe 10. The Degremont pulsator (FIG. 9} supplies raw water through pipe 1 to distribution chamber 2 and through holey pipes 3 enters the zone of suspended sediment 4 of the clarifier. Then the water rises up and enters the lighting zone 5 The clarified water flows through the perforated pipes 6 through the collecting chute 7 and is discharged from the clarifier. The excess sediment from the zone of suspended sediment flows to the peripheral sediment seal 8 and from there pump 9 is pumped out.

The zone of suspended sediment is loaded with a load of such specific gravity, which for a given speed is suspended, of a size of 4-20 mm. The water clarification zone is loaded with a floating load with a specific weight less than the specific weight of water, with a particle size of 20-100 mm. Loads from the bottom and from the top side are fenced with a grid with cells 2-5 mm less than the size of the load.

The proposed clarifier works on non-pulsed mode.

In a clarifier with a peripheral damper (Fig. 10), the source water is supplied through pipe 1 to the central

the distribution cylinder 2, from where it travels through the perforated pipes 3 to the sediment accumulation zone 4, rises upwards, enters the suspended sediment zone 5 and further

enters the clarification zone 6. The clarified water is removed by the trays 7. Excess sediment from the zone of suspended sediment enters the peripheral slurry compactor 8 and is discharged outside through the pipeline 9. Sediment from

0, the bottom precipitator 4 is discharged through line 10.

Suspended sludge zone 5 is loaded with a floating load with a specific gravity that is suspended for a given lifting water speed, the loading size is 4-20 mm. The lightening zone 6 is loaded with a floating load with a specific weight less than the specific weight of water, with a particle size of 20-100 mm.

0 floating loads are fenced with nets with

by 2-5 mm smaller cells

loading zone suspended sediment and 5mm

smaller size of the water clarification zone.

The VTI clarifier (Fig. 11) is initially boosted and fed through tubes 1, reagents are fed through pipes 2 and water is fed into mixer 3. After that, mixed with coagulant water is fed to the main flow of water supplied through pipe 10. The main flow of water is 0 steps into the lower section of the suspended sediment zone and rises up, forms a layer of suspended sediment 4. Part of the water with sediment enters the sediment compactor 7, and some of the water rises up and

5, the passage through the clarification zones 5 is collected by the perforated pipes b in the collection tray 11 and discharged to the outside. The clarified water in the packer is also collected through perforated pipes 12 and using a pipe 8.

0 enters collection tray 11.

In order to intensify water clarification, the zone of suspended sediment is loaded with a floating load of such a specific gravity, which for a given water lifting speed is suspended. Feed size 4-20 mm. The water clarification zone is loaded with a load with a specific weight less than the specific weight of water with a particle size of 20-100 mm.

0

The upper part of the sediment accumulation zone is also loaded with a floating load with a specific weight less than the specific weight of water, the loading size is 20-100 mm. Floating charges are fenced with grids 9 with cell sizes 2-5 mm less for loading suspended sediment and 5 mm less for loading the clarification zone and sediment accumulation zone. The precipitator compacted to the bottom of the suspended sediment zone and to the bottom of the precipitator is discharged from the clarifier through pipes 13 and 14.

In the recirculator co-lighter (Fig. 12), the source water is supplied through pipe 1 and sent to the primary reaction chambers 2. The water is mixed in the mechanical mixer with the reagent and some of the water enters the secondary reaction chambers 3, and some of the water rises into the air separator 4 and is directed to the zone of suspended sediment 6. The lower part of the zone of suspended sediment 5 serves as the zone of accumulator sediment. The water rises through the zones of suspended sediment, enters the zone of clarification 7 and with the help of collecting trays 8 is drained outside.

Suspended sediment zone b is loaded with a floating load with a specific gravity that is suspended for a given water lifting speed, the loading size is 4-20 mm. The water clarification zone 7 is loaded with a floating load with a specific weight less than the specific gravity of water. Loading size 20 - 100 mm.

Floating loads are enclosed by grids 11 with cells 2–5 mm less than the size for loading the zone of suspended sediment and 5 mm less than the size of the loading of the water clarification zone. To increase the height of the suspended sediment zone, the length of the septum 12 is increased. The sediment accumulated in the precipitator 9 is discharged by pipes 10. The reagent is fed through pipes 13. In the clarifier-precipitator (Fig. 13) water

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It is fed through pipe 1 and enters the zone of the mechanical reaction chamber 2. Then the water enters the zone of suspended sediment 3 and the clarification zone 4. The clarified water is collected in the perforated trays 5 and is discharged outside through the pipes 6, the sediment is collected in the receiver 7 and the annular perforated pipe 8.

The zone of suspended sediment 3 is loaded with a floating load with a specific gravity which is suspended for a given water lifting speed, the loading size is 4-20 mm. The water clarification zone is flooded with a specific gravity less than the specific gravity of the water. Loading size 20 - 100 mm.

The loads are enclosed by grids 9, the dimensions of the grid cells are 2 to 5 mm less than the size of the load of the zone of suspended sediment and 5 mm less than the size of the load of the zone of water clarification. The reagent is fed through pipe 10.

Claims (1)

DETAILED DESCRIPTION OF THE INVENTION A clarifier with suspended sediment for water purification, comprising a reservoir with zones of suspended sediment, clarification and sediment compactor, feed water inlet and outlet for purified water and sediment, characterized in that, in order to improve the clarifier's performance, it is provided with layers of floating load, located in the zones of suspended sediment, clarification and in the upper part of the precipitator. /four Oq about 0 ° o -Ј Jl eleven fe oh oh CD ID "Y hI 7 b-t f -four 4b about (ABOUT about f f  s el o 9 ° h I  „.J Oh oh CH G , in and I Oh “, one 0 in-- | about ° H B1 ° C I in | about IV - VJ ° o . ° | o o |; TO BUT H TO -J % B about by them 069SW.I FIG. fd