RU64092U1 - FILTER FOR CLEANING WATER - Google Patents

Abstract

The utility model relates to the field of natural and wastewater treatment. During the regeneration period of the filtering granular load, it is possible to carry out guaranteed effective high-quality cleaning, as a result of which all contaminants are completely washed off the grain surface, the structure is simplified, the time and the consumption of washing water are reduced by 50-55%. The filter for water purification, during the regeneration of the filter load, operates as follows. The electric drive rotates the shaft and with it a cultivator, immersed with four legs in the upper part of the filter granular load. As a result of this, agglomerates and monolithic zones are destroyed. After this, the process ends with a reverse flow of water. 1 ill.

Description

The utility model relates to the field of natural and wastewater treatment.

In the process of filtering through a granular charge, it becomes clogged with contaminants extracted from water. As a result of this, the hydraulic resistance of the load increases sharply and, as a result, the cleaning efficiency of the treated medium decreases due to the removal of contaminants already detained by the filtering device, and its performance is significantly reduced. To eliminate this phenomenon, a periodic washing of the filter load with a reverse current of water or water and air is usually carried out (see, for example, SNiP 2.04.02-84, Water supply. External networks, M. Stroyizdat, 1985)

The washing of the impurities detained by the filter loading is carried out, firstly, as a result of washing them off the grain surface with a stream of water and, secondly, due to the friction of the particles against each other. That is, the washing washing efficiency is determined by the shear forces arising on the surface of the loading grains.

However, as experience in operating filters with granular loading shows, under different operating conditions, the intensity of the washing regimes with these methods does not guarantee that after some time (usually 3-4 months, and sometimes earlier), agglomerates of particles of the filter load interlinked between a delayed pollution. Since these agglomerates are not destroyed during the washing process by the indicated methods, a situation is created in which monolithic zones are formed in the mass of the filtering load that lose their filtering properties. In this case, the processed medium will pass by these zones, which leads to a violation of the hydrodynamic filtration regime, as a result of which the quality decreases sharply.

To eliminate the formation of monolithic zones in the filter load, various technical solutions are used that allow washing the load from delayed contaminants with a higher intensity than the washing using traditional methods allows.

A technical solution is known (A.S. No. 1607872, publ. 11/23/1990).

A water purification filter comprising a granular loading housing and a loosening loading device made in the form of a frame with a float attached to the frame of vertical zigzag plates, upper and lower stops mounted on the inner wall of the housing. The float is made in the form of a chamber made of elastic material located along the perimeter of the frame with means for supplying compressed gas to it.

The disadvantage of this device is that the loosening of the surface layer is not complete, but only along the corrugated plates, therefore, the quality of backwashing is reduced and, as a result, a large amount of washing water is required.

Closest to the proposed technical solution and adopted for the prototype (A.S. No. 1667893, publ. 08/07/1991) is a filter for water purification, comprising a housing with side walls and a bottom, a granular loading placed in the housing, a means for its regeneration including a movable trolley, a horizontal water distribution pipe with a cultivator in the form of hollow vertical tubes with lugs and a pipe for the removal of washing water, placed between partially shielded vertical shields attached to those a hedgehog, a pump and a pipe for supplying washing water connected to a water distribution pipe and equipped with trays for supplying and removing washing water attached to the side walls of the housing, a pipe for removing washing water is attached to the carriage, made in the form of a siphon, the ascending branch of which is equipped with a corrugated insert and floats, the descending branch is immersed in the tray for drainage of wash water,

the washing water supply pipe connected to the water distribution pipe is corrugated, the washing water supply pump is mounted on a movable trolley, its suction pipe is immersed in the washing water supply tray, and the horizontal water distribution pipe is mounted to rotate around the longitudinal axis and is equipped with a stopper.

The disadvantages of this filter for water treatment are:

- complex design;

- high water consumption;

- regeneration is carried out only the upper layer of the filter load;

- long regeneration time due to the low speed of the trolley.

The main tasks to which the utility model is directed are:

- simplification of the design;

- reduction in the amount of water consumption;

- improving the quality and efficiency of washing the filter load;

- reduction of regeneration time.

The technical result is achieved in that the filter for water purification, according to the proposed utility model, includes a housing, a granular loading placed in the housing, pipelines and pumps for supplying and discharging washing water, characterized in that the ripping device, consisting of an electric drive mounted on a frame on top of the housing , shaft, to avoid displacement due to the long length installed in the support device on a beam attached to the filter housing, a cultivator consisting of a pipe and four ex paws immersed in the upper layer of the filter granular load.

An analysis of the prior art by the applicant, including a search for patent and scientific and technical sources of information, identification

sources containing information about analogues of the claimed utility model, allowed to establish that the applicant did not find an analogue characterized by features identical to all the essential features of the claimed device. The determination from the list of identified analogues of the prototype, as the closest in the set of essential features of the analogue, allowed us to identify the set of significant distinguishing features in relation to the technical result perceived by the applicant in the claimed filter for water purification and set forth in the utility model formula. Therefore, the claimed filter meets the condition of "novelty."

The filter can be used to regenerate the filtering granular load in the treatment of natural and waste waters and the possibility of implementation using the means and methods described in the application or known prior to the priority date is confirmed and can ensure the achievement of the desired result.

Therefore, the claimed utility model meets the criterion of "industrial applicability".

Figure 1 presents the filter for water purification, which consists of a filter housing 1, frame 2, electric drive 3, shaft 4, ripper 5, beam 6, support unit 7, filtering granular load 8.

During the regeneration period of the load, the filter operates as follows. The electric drive 3 rotates the shaft 4, which accordingly rotates the ripper 5, consisting of a pipe and four legs, immersed in a filtering granular load 8, resulting in the destruction of agglomerates and monolithic zones. After that, the flushing is carried out by a reverse flow of water.

The proposed utility model during the regeneration period of the filtering granular load allows guaranteed effective, high-quality cleaning, as a result of which all contaminants are completely washed off the grain surface, the design is simplified, the washing time is reduced, and the washing water consumption is reduced by 50-55%.

Claims (1)

Filter for water purification, comprising a housing, a granular loading placed in the housing, pipelines and pumps for supplying and discharging washing water, characterized in that the ripping device, consisting of an electric drive mounted on a frame on top of the housing, a shaft to prevent displacement due to the longer length mounted in a thrust device on a beam attached to the filter housing, a ripper consisting of a pipe and four legs immersed in the upper layer of the filter load is rigidly fixed on the lower part of the shaft.