SU1039522A1 - Apparatus for cleaning waste waters - Google Patents

Abstract

1. A DEVICE FOR CLEANING WASTE WATERS, comprising a housing with an elastic filter charge, means for compressing it, upper and movable lower drainage grids, inlet and outlet pipelines for the source, flushing and purified water and a reducing bypass valve, characterized in that In order to increase reliability of operation and increase the loading capacity of the container, the means for compressing the elastic filter loading is made in the form of tanks located under the bottom drainage grille and equipped with lids installed the possibility of vertical reciprocating movement. 2. An apparatus according to claim 1, characterized in that it is provided with a pump connected by pipeline to containers and via a reducing bypass valve to an outlet pipeline for purified water. (L

Description

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2 The invention relates to filtration and can be applied for the purification of natural and waste waters. A wastewater treatment device is known, comprising a housing with an elastic filter charge, means for compressing it, upper fixed and lower movable drainage grids, supply and discharge pipelines for source, flushing and purified water 1. A disadvantage of the known device is the difficulty of adjusting the degree compressing the filtering load during filter operation. The closest technical solution to the invention is a wastewater treatment device, comprising a housing with an elastic filter charge, means for compressing it in the form of an adjusting spring, an upper stationary and a lower movable drainage grate, supply and discharge pipelines for the original, flushing and purified water and pressure relief valve. During the operation of the filter, the pores of the filter material are contaminated, which leads to an increase in the pressure drop of the liquid in the filter layer. In doing so, the filter element compresses the spring, as a result of which the filter layer is expanded, the pores are enlarged and the pressure drop decreases. With a sharp increase in pressure, the relief bypass valve 2 is triggered. However, this device is characterized by low reliability and insufficient loading capacity, since a large pressure drop in the filter layer is required to overcome the resistance of the spring and the compressed filter material. In this case, the reducing bypass valve is activated only when the filter charge is completely clogged, when a sufficient increase in pressure occurs. Thus, during the period of pressure increase, a " unpurified liquid may slip through, and the process of loosening the bed is abrupt. The aim of the invention is to increase the reliability of operation and increase the load capacity of the load. The goal is achieved by the fact that in a sewage treatment device comprising a housing with an elastic filter charge, a means for its storage, upper fixed and lower movable drainage partitions, supply and discharge pipelines for source, flushing and treated water and a reduction bypass valve , the means for compressing the elastic filter loading is made in the form of tanks located under the lower drainage grate and equipped with lids installed with the possibility of a vertical reciprocating post 's translational movement. The device is also equipped with a pump connected by pipeline to the tanks and through a reducing bypass valve to the discharge pipe for purified water. The drawing shows a diagram of the proposed device. The device includes a housing 1 in which an elastic filtering load 2 is placed, an upper stationary drainage grate 3 and a lower movable drainage grate 4, a groove 5 for supplying raw water, a reservoir 6 for source and wash water, a pipeline 7 for draining cleaned and supplying wash water, a pipeline with valve 8 For supplying source water to tank 6, pipeline with valve 9 for removing wash water. In the lower part of the housing 1 under the filtering load 2 there are containers 10 having covers 11 installed with the possibility of vertical reciprocating movement. The containers 10 are connected by pipe 12 to the pump 13. A pressure gauge 14 is installed on the pipe 12. To regulate the degree of compression of the elastic load, the device is equipped with a pressure relief valve 15. The pressure relief valve 15 is disconnected from the pipe 12 by means of a valve 16. The pressure relief valve 15 connected to a pipeline 7 having a check valve 17. A pipeline with a valve 18 serves to supply the flushing water to the device. The device is switched off during washing by means of a valve 19. The device operates as follows. Pipe 12 by pump 13 with closed valves 9 and 16, 18 and 19 of tank 10 is supplied with working fluid, creating pressure that is transmitted through caps 11 to moving grid 4, compressing load 2. Pressure corresponding to the degree of compression of the load is recorded by a pressure gauge 14. After setting the required degree of compression of the filtering load 2 through the pipeline with the valve 8 to the tank 6 receives the source water to be cleaned. In this case, the valves 16 and 19 are open-. From the tank 6 the source water through the distribution chute 5 is fed to the filter. Passing through loading 2, the purified water enters the pipeline 7 and is discharged from the device through the pipeline with the valve 19. Colmating with an elastic filtering loading 2 reduces the pressure of the purified water in the pipeline 7. As a result

pressures created by the working fluid and purified water and acting respectively on the upper and lower pads of the reducing overflow valve 15, the latter activates and discharges into the pipeline 7 a certain amount of working fluid from the tanks 10. The check valve 17 on the pipeline 7 prevents the pouring of the working fluid into the drainage system of the filter and thus excludes its effect on the amount of pressure of the purified liquid in the pipe 7. When part of the working fluid is removed from the tanks 10, per downstream cover 11, the corresponding downward movement of the drainage grate 4 and the expansion of the filter load 2. This leads to a decrease in pressure drop in the filter loading layer 2 and, consequently, to the restoration of the magnitude of the pressure of the cleaned fluid in the pipeline T . Filtering continues until the elastic load 2 is fully expanded, as can be judged by the readings of the pressure gauge 14. After the elastic load 2 is fully expanded, it is regenerated. In this case, the valves 8 and 19 are closed, and 9 and 18 are open. Wash water flows through the pipeline with the valve 18 into the pipe 7, then through the lower drainage grate 4 into the expanded filtering load 2, launders it and together with the removed contaminants flows through the chute 5 into the tank 6, and is removed through the pipeline with the valve 9 .

The advantage of the device is the possibility of smoothly adjusting the degree of compression of the elastic filter load during the operation of the filter, which increases its reliability in operation, increases the heat capacity and is structurally simple.

Claims (2)

1. DEVICE FOR WASTE WATER TREATMENT, comprising a housing with an elastic filter load, means for compressing it, upper and movable lower drainage grids, inlet and outlet pipelines for source, rinse and purified water and a pressure relief valve, characterized in that, with in order to increase reliability and contaminant capacity increasing compression loading means for loading the elastic filter is in the form of containers arranged below the bottom drainage grille and provided with lids, mounted _(with possible Stu vertical reciprocating movement. 2. The device according to π. 1, characterized in that it is equipped with a pump connected via a pipeline to the tanks and through a pressure reducing valve to the outlet pipe for purified water.