SU1754678A1 - Sludge platform - Google Patents

Abstract

The invention relates to sludge dewatering devices for sewage treatment plants. The purpose of the invention is to reduce the cost of site design and facilitate its operation. In order to achieve the goal in the sludge bed, the filter elements are made in the form of removable walls consisting of modules assembled from recycled, cut in half and installed in vertical uprights of tire covers. The ends of the tire covers near the standing sinks are interconnected horizontally with fasteners, and the vertical tires of each stack are connected with a rod, in the lower part the end of which is pressed against the tire, and in the upper part the ends of the drain bars in each module are fixed with a rigidly connecting strip. Modules are interconnected by plates. Thus, there are three compartments: two side and one central. In the side compartments, the filter layer is made of coarse organic waste with a particle size of 2-10 mm, and in the central particle size of 5-50 mm made of gravel or rubble. New wall construction allows you to quickly disassemble the extreme compartments filled with sediment and filter layer. The walls are dismantled using a mobile crane. 2 hp f-ly, 6 ill. J

Description

This invention relates to sewage sludge dewatering devices and can be used in sewage treatment plants.

A well-known platform, containing a waterproof base and a drainage pipe located on it, vertical filtering elements of pairwise walls with openings symmetrically placed at a distance from each other and a filtering layer of coarse organic waste placed between them and filtering material of rubble or gravel . Filter elements are made of two permanently.

installed walls in the center and side removable walls located at a short distance from the stationary walls. This arrangement gives two side compartments and a central one.

The filter layer in the side compartments is made of coarse organic waste with a particle size of 2-10 mm.

The filtering load in the central compartment is made of gravel or crushed stone with a particle size of 5-50 mm. A drainage pipe is located in the center of this compartment.

A disadvantage of the known sludge bed is a large consumption of materials, since the walls are made of perforated

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plates or blocks. The cost of such walls is significantly high. The large labor costs during operation in the process of assembling and disassembling two removable walls from blocks, In addition, regenerating the filter loading 5 in the central compartment with two stationary walls is considerably difficult, since the long central compartment complicates the removal of industrial water used for washing. ten

The aim of the invention is to reduce the cost of site design and facilitate its operation.

 The goal is achieved by the fact that the filter elements are made in the form of 15 removable walls consisting of modules assembled from recycled, cut in half and installed in vertical runways of tire covers, while the ends of tire covers of standing stands are interconnected horizontally with fasteners, and vertically the tires of each stack are connected by a rod, in the lower part the end of which is pressed against the tire by fasteners, and in the upper part the ends of the rods 25 of the stands in each module are fixedly connected Coy.

The modules are interconnected by plates fixed on the upper ends of the rods, and installed in the base of 30 sites across the width of the modules recesses for the length of the installed walls. The walls are made of recycled halves of tire covers assembled into modules. Thus, there are three compartments: 35 two side and one central. In the side compartments, the filtering layer was made of coarse organic waste with a grain size of 2–10 mm, and in the center - with a grain size of 5–50 mm from gravel or rubble .40

The new wall construction allows you to quickly disassemble the outer walls, remove the compartment filled with sediment and filtering layer. The walls are dismantled using a mobile crane. Assembled modules 45 are convenient and reliable in work when assembling and disassembling walls.

In order to carry out a high-quality regeneration of the filter charge in the central compartment, one of the 50 central walls can be completely or partially disassembled.

The rigidity and stability of the structure is ensured by the fact that the vertical tires of each runner are connected by a rod, the lower part of which is pressed against the tire by a fastener, and in the upper part the ends of the rods are fixed in each module.

The invention solves the practical problem of using secondary resources. Reducing the volume of assembly and disassembly facilitates significantly the operation of the sludge site.

FIG. 1 shows a silt pad in plan; in fig. 2 shows section A-A in FIG. one; on fig.Z - a fragment of two side and central compartment in the plan; in fig. 4 - view along arrow B in FIG. 3; in fig. 5 is a view along arrow B in FIG. 3; in fig. 6 — node G in FIG. 5 (on the connection rod with the strap).

The silt site contains a waterproof base 1, a vertical filter element consisting of central walls 2 and side walls 3. These walls form two side compartments 4 and a central compartment 5. Walls 2 and 3 are assembled from modules b formed from recycled tire covers 7 cut in half.

The tires 7 are assembled in runners 8. The ends of the tire covers 8 are interconnected by fasteners 9 (bolts and nuts).

Vertically, the tires are connected by rods 10. The ends of the rods 10 are sticks 8 fixed by a rigid connecting strip 11 and cotter pins 12.

From below, each rod 10 is pressed against the tire 7 by a nut 13. In each tire the holes 14 are made for filtering.

The modules are installed in the recess 15, made at the base of 1 site along the width of the tire. This automatically ensures the parallelism of all the walls. Between themselves, the modules are connected by plates 16, which are worn on the outermost rods 10, and secured with linch pins 12. Splints 12 fasten the rods 10 of each hundred ka.

The side walls 3 are filled with a filtering layer 17 of coarse waste with a particle size of 2-10 mm.

The central compartment 5 is filled with a filtering load 18 in the form of gravel or gravel with a particle size of 5-50 mm.

A drainage pipe 20 is located in the central compartment 5 in the reinforced concrete chute 19.

The extreme sinks 8 of the central walls 2 and the side walls 3 are interconnected by a rail 21, clad on the ends of the rods 10.

The silt site also contains silt water 22, dehydrated sediment 23, pressure silt conduit 24, distribution tray 25, process water pipeline 26, gate valves 27 of the flush water supply pipelines.

Ilova site works as follows.

The pad is filled with sediment through the ipowel 24 and the distribution tray 25. At this time, the valves 27 are closed. After filling the sites, the process of stratification of sediment into compacted sediment 23 and sludge water 22 begins. With the acceleration of stratification of sludge, the process of drainage of sludge water 22 intensifies. At this time, the sediment condenses. The height of the sediment and sludge water depends on the physicochemical properties of the sediment and may be different: the solid phase may float, separate and settle.

But regardless of the sediment properties, the proposed drainage system provides drainage of water from any level, effective removal of lower and upper water.

Ilova water 22 passes through filtering perforated walls 3, through filtering layer 17, filtering load 18 and is discharged through drainage pipes 20.

The scheme of the vertical drainage system with removable side walls 3 ensures the removal of the spent filter layer 17 into the sediment 23 and its unloading together with the sediment from the sludge bed. Analysis of the walls is performed by a truck crane (not shown), modules b are disconnected first and then loaded onto vehicles.

To improve and accelerate the regeneration of the filtering load 18, one of the walls 2 can be disassembled or partially. After removing sediment 23 from the sludge bed, the drainage system can be flushed with technical water coming through pipe 26, valves 27 to drainage pipes 20.

The dried sludge on the proposed sites is cleaned in a mechanized way, while the machines move along the filter walls, without affecting the design of the drainage system.

The installation of the walls 3, as well as one of the walls 2, is performed in the reverse order. After installing the walls 3, the filter bed 17 is poured into the side compartments 4.

Duty cycle repeats.

Compared to the prototype, the cost of wall material is reduced by more than 3 times, and the cost of demolition work is reduced by 6 times.

By speeding up the assembly, installing the walls and reducing the amount of work required to regenerate the filter media, the sludge site operation is greatly facilitated.

For rmul inventions

Claims (3)

1. An area containing a waterproof base and a drainage pipe located on it, vertical filtering elements made of pairwise walls with openings symmetrically installed at a distance from each other and a filtering layer of coarse organic waste placed between them and filtering material made of rubble or gravel, characterized in that, in order to reduce the cost of construction and facilitate the operation of the site, the walls of the filter elements are made in the form of removable towers consisting of modules assembled from recycled, cut in half and installed in vertical uprights of tire covers, and equipped with fasteners connecting the ends of the tire covers next to the horizontals, rods connecting the tires vertically, and a connecting film attached to the stand rods in each module. 2. The site according to claim 1, about tl and h a u-; and due to the fact that it is provided with connecting plates attached to the upper ends of the rods. 3. The site according to claim 1, of which is based on the fact that, at its base, there are recesses in the base of the installed walls, in which the modules of the autocaps are placed. tizr Fig 1 phage. 2 819frSa (Du, figs s