RU202072U1 - WASTE WATER CLEANER - Google Patents

Abstract

This utility model relates to devices for wastewater treatment of industrial, agricultural and civil facilities and, in particular, can be used in settling tanks with a variable water level. The technical result - an increase in the efficiency of water settling in the storage tank - is achieved by the fact that the blocks of thin-layer sedimentation with a cross-flow pattern of water and sediment with horizontal movement of water through them are structurally made with positive buoyancy and are installed in the tank sequentially, one after another, over the blocks are installed limiters ascent, for each row of blocks individually, in addition, blocks in a row overlap the entire width of the sump tank, each block has floats that provide it with positive buoyancy, taking into account the mass of sediment deposited on it due to excess buoyancy, in addition, it contains stationary level limiters, installed so that when they float together, the blocks completely overlap the cross-section of the settling tank. 4 fig.

Description

This utility model relates to devices for the treatment of wastewater from industrial, agricultural and civil facilities and, in particular, can be used in settling tanks with a variable water level.

The known problem of low efficiency of treatment facilities using sedimentation tanks.

The known system of treatment facilities, containing a storage tank-storage capacity, designed to receive a salvo discharge of wastewater and ensure their uniform supply to subsequent treatment cascades; settling tank, including those equipped with thin-layer sedimentation blocks; cascades of filtration, sorption, disinfection. Waste water entering the storage tank is pumped into the sump at a predetermined process flow. The sedimentation tank is structurally designed so that the water level in it remains constant and does not depend on the wastewater flow rate. In this case, the block of a thin-layer sedimentation tank must be under water. If the lamellas of the thin-layer clarifier are exposed to air, the sediment on them will dry out and will not be able to slide off the lamella, which will cause blockage of the gaps and failure of the thin-layer clarifier.

Known device for water and wastewater treatment [1]. The device refers to facilities for the separation of dispersed impurities in a gravitational field and can be used for the purification of natural and waste waters. The settling tank contains a reservoir, units for supplying and removing liquid, a flocculation chamber, and a device for removing sediment. In the sedimentation zone along the length of the sump, transverse partitions with slots are installed. The number of transverse partitions should be at least 3 and not more than 8. The sedimentation tank is additionally equipped with longitudinal partitions not reaching the bottom, located in the sedimentation zone, dividing it into sections. The technical result is to increase the degree of purification at an equal flow rate.

The closest to the claimed device is a multi-section device for thin-layer cleaning of large volumes of water from mechanical impurities, containing a container with treated water, a package of inclined elements in the form of plates, branch pipes for supplying initial water and removing clarified water and sediment, dividing grids, guide rods with moving along them platform, made in the form of a float [2].

However, the known sedimentation tanks have a significant drawback - the ability to work only under conditions of a stable water level in them. A layer of sediment on the lamellas of a thin-layer block can only slip off if it is wet. With a decrease in the water level, the lamellas of the thin-layer block are exposed to air, the sediment on the lamellas dries up and loses its fluidity, and the thin-layer sump fails.

The purpose of creating this utility model is to achieve a technical result for the placement of thin-layer sedimentation blocks in reservoirs with varying water levels, for example, accumulating tanks of storm water treatment facilities. In addition to increasing the efficiency of water settling in the storage tank, an additional effect is expressed in reducing capital costs for construction, since in this case, the need for the construction of an additional settling tank disappears.

The specified technical result is achieved by the fact that the structures of the thin-layer blocks are made according to a cross settling scheme, equipped with floats and installed in the settling tank in series in rows, one after another; Ascent stops are installed above the blocks, for each row of blocks individually, so that when the blocks ascend, they are guaranteed to overlap the entire section of the settling tank. The blocks cover the entire width of the settling tank. Each block is equipped with floats that provide it with positive buoyancy, taking into account the mass of sediment deposited on it. Blocks float in rows at different levels, determined by level stops.

The claimed device consists of several blocks of thin-layer sedimentation with horizontal movement of water through them and with a cross-flow pattern of water and sediment.

The utility model is illustrated by graphic materials, Fig. 1 shows the state of the blocks of a thin-layer settling tank at the maximum filling of the settling tank, FIG. 2 and 3 - at intermediate water levels in the settling tank, in FIG. 4 - the position of the blocks of a thin-layer sedimentation tank at a minimum water level in the sedimentation tank.

The figures show the following symbols:

1 - Case

2 - Inlet branch pipe for the flow of waste water into the settling tank;

3 - Branch pipe for discharge of treated waste water;

4 - Pump for pumping out water;

5, 6, 7 - Thin-layer block limiters;

10.1, 10.2, 10.3 - Inclined plates (lamellas).

The claimed device works as follows:

With the flow of wastewater and the maximum filling of the settling tank (Fig. 1), the blocks 10.1-10.3 of the inclined plates of the thin-layer clarifier float along the guides to the restraints, which are installed so that the blocks completely cover the cross-section of the settling tank. Guides provide vertical movement of blocks and prevent horizontal displacement.

When the water level drops, the block of inclined plates 10.1 descends first (Fig. 2). In this case, the upper edge of the block is at the level of the water surface (or protrudes 10-20 mm above the surface). With a further decrease in the water level and reaching the top of block 10.2, both blocks of inclined plates begin to descend together, ensuring the full flow of water through the thin-layer sump.

With a further decrease in the water level and reaching the top of block 10.3, all three blocks of inclined plates begin to fall together (Fig. 3).

At the minimum water level in the settling tank (Fig. 4), the blocks of inclined plates 10.1, 10.2 and 10.3 are in the lower position in the water layer, the level of which covers all blocks. The water level is set by the design of the settling tank in accordance with the dimensions of the blocks.

Specified device

- indicates a specific way to solve the problem of effective settling in conditions of fluctuations in the filling level of the settling tank, which indicates its compliance with the criteria of patentability - solution of a technical problem and industrial applicability;

- is new, previously unknown, which indicates its compliance with the criterion of patentability - novelty.

The declared utility model can be manufactured at an industrial enterprise with average technological equipment.

1. RF patent №2324520 Device for water and wastewater treatment. IPC B01D 21/08 publ. May 20, 2008

2. RF patent No. 2442634 Multisection device for thin-layer cleaning of large volumes of water from mechanical impurities IPC B01D 21/02 publ. 02/20/2012.

Claims (1)

A device for wastewater treatment, containing a settling tank with treated water, a block of inclined elements in the form of plates, branch pipes for supplying source water and removing clarified water and sediment, dividing grids, guides made with the possibility of moving along them a platform made in the form of a float, characterized in that the blocks of thin-layer sedimentation with a cross-flow pattern of water and sediment with horizontal movement of water through them are equipped with floats, and the blocks are made with the ability to move in a vertical plane along the guides, the blocks are installed in the settling tank sequentially, one after another, overlapping in a row the entire width of the settling tank, while the wastewater treatment device is equipped with ascent limiters located above the blocks, for each row of blocks individually at different levels, and the limiters are installed in such a way that the blocks together, when ascending, completely cover the cross-section of the tank -sludge basin.

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