SU1154214A1 - Pressure filter for purifying petroleum-containing waste water - Google Patents

Abstract

1. A PRESSURE FILTER FOR CLEANING OIL-CONTAINING WASTE WATER, comprising a cylindrical body installed in the body at a distance from its walls a cylindrical filter chamber made of elastic material with elastic filter loading placed in it, pipes for feeding purified water and draining wash water and filtrate and means to regenerate the load with a nozzle for supplying a working agent, which is different from the fact that, in order to improve the quality of the filtrate and simplify the design, the filter chamber is made of water elastic material, provided with linings of elastic material more dense than the material of the chamber, in the form of rows of rectangles along the diametrically opposite outer sides of the cylindrical filter chamber, (L a branch pipe for supplying the working agent is attached to the body. 2. Clause 1, Lt and H ay and with the fact that the pads are attached to the cylindrical filtering chamber with the help of glue.

Description

The invention relates to wastewater treatment plants, in particular, oily wastewater, in particular, washing water from automobiles and railways, stormwater, ballast water and the like. waters

A device for removing insoluble liquids from water, for example petroleum products and oils, is known, comprising a housing, a filter chamber, a filter element (e.g., polyurethane foam), a bucket elevator.

The regeneration of the filter element is carried out by squeezing it on the rolls in the remote regeneration unit. The supply of polyurethane foam pieces to the annealing rolls is carried out by a bucket elevator located in the loading mass QJ.

The disadvantage of this design is its cumbersome mechanical damage to the pieces of polyurethane foam by moving mechanisms, removal of crushed crumbs with wastewater and regenerate.

A device for cleaning oil-containing wastewater is known, which is made in the form of a vertically arranged housing, part of which serves as a filtering chamber, where the elastic filtering element is located, provided with a pump or a pressure reservoir 2.

The drawbacks of this device are the complexity of the design of the apparatus due to the need to apply high pressures during regeneration of a single element greater than 1-2 m in height due to the direct proportionality of the degree of deformation to the thickness of the material layer, and the pressure transfer unevenness associated with this the unevenness of the degree of compression of the material due to its wedging in a rigid case, leading to poor-quality regeneration.

The closest to the invention of the technical essence is a pressure filter for cleaning oily wastewater, containing a vertical didindricheskiy case, located in it a filter chamber made in the form of a cylinder of elastic material permeable to water, placed in it an elastic filter charge, patrol to supply the cleaned water in the load, nozzles for draining the wash water and filtrate, the means for compressing the load in the form of sealed chambers of variable volume, located radially in cross section, the shape of triangles and the nozzle for supplying water or air to sealed chambers.

Q A disadvantage of the known device is that the filtration is performed in the radial direction, which means that the thickness of the loading layer is limited by design conditions and cannot be large. At the same time, studies show that the optimum thickness of the loading layer is from elastic polyurethane foam must be at least two meters

- in the loading layer there is a large number of elastic chambers folded during filtration. This leads to a significant increase in the wall effect, in which contaminated liquid will follow the path of least resistance along the ballast walls without cleaning, which reduces the quality of the filtrate. In addition, the presence of a large number of sealed chambers that have the shape of an isosceles triangle in cross section significantly complicates the design of the filter.

The aim of the invention is to simplify the construction and increase the quality of the filtrate.

The goal is achieved by the fact that a pressure filter for the purification of oily wastewater, comprising a cylindrical body, a cylindrical filtering chamber made of an elastic material with an elastic filtration charge placed therein, nozzles for feeding purified water and discharging wash water and the filtrate and the medium for the regeneration of the charge with the nozzle for supplying the working agent, the filtering chamber is made of waterproof elastic material, equipped with an overlay Kami of elastic material more dense than the material chamber in the form of rows of rectangles arranged along diametrically opposed external sides of the cylindrical filter chamber, a nozzle for feeding working fluid to the housing. In addition, it is advisable to attach the covers to the cylindrical fi rub chamber with glue. FIG. 1 shows a pressure filter in filtering mode, section. FIG. 2 - the same, in the retener mode (it is conditionally rotated), in FIG. 3 is a section A-A in FIG. 1, in FIG. 4 is a section BB in FIG. 2. The pressure filter consists of a cylindrical body 1, inside which there is a cylindrical filter (cam) and 2, made of a thin elastic and waterproof material (for example, oil and petrol resistant rubber, tarpaulin). The filter chamber 2 is filled with an elastic filter cartridge 3, for example, pieces of polyurethane foam. The filter chamber 2 is connected using conventional clamps with a col pack 4, equipped with drainage grids 5. The caps 4 have an inlet nipple 6 and a discharge nipple taken out of the apparatus through the glands 8. On the casing 1 there are nozzles 9 and 10 with KpanaN-M, serving respectively for the supply of dirty water and drainage of the regenerate, the pipes 11 and 12 for the supply of leaching and removal of clean water. Through a pipe 13, a pressure filter is connected to a pressure tank 14 equipped with a pressure gauge and a pipe 15 for supplying compressed air or water. In order to provide directional deformation of the front chamber 2, it is provided with two diametrically located plates 16, made, for example, in & ve rectangles of rubber, glued to the elastic Aelt chamber to the opposite diameters of its outer sides. Pressure filters can, if necessary, be assembled into a high-capacity filter unit. Pressure filter works trace in the same way. Before filtering, the taps and the nipples 9 and 10 are open, the taps on the nipples 11, 12 and t5 are closed. Sewage water through the nozzle 6 enters the filter chamber 2. Oil particles are sorbed on the filter 14 4 to the loading load 3, the purified iodine leaves the nozzle 7. Since water is an incompressible body, and its exit from the space surrounding the filter chamber 2 is closed, the time of filtration, the pressure of the internal filter chamber 2 is equal to the pressure outside it. After an all-up (oil loading, the taps on the pipes 9, 11, and 12 are closed. The valve on the pipe 15 is opened and, with the help of an external pressure source, water from the pressure tank 14 enters the housing 1, crimping the filter chamber 2 evenly with an elastic filter material. Through an open valve on the nozzle 10, the extruded regenerate flows into the collection tank (not indicated). After that, all the taps are transferred to the initial position. The filter loading 3 under the action of its own elasticity and under the action of water supplied through the nozzle 9 or flush water that can be supplied through the pipe 11 returns to the original one. A strictly constant volume of water equal to the decrease in the volume of the filter chamber 2 is displaced into the pressure tank 14 when compressed and rises again to the height H. Squeezing and washing can be repeated several times. once again, then filter the water again to the next. Full filling of the filter load 3. The entire filter cycle can be automated. The use of an elastic filter chamber 2 with lining 16 allows you to evenly press the filter element nt 3 of virtually any desired height, and the linings provide directional deformation and equal compression conditions throughout the volume of the filter chamber 2. In addition, there are no ballast (non-working) surfaces in the filter chamber, due to the increased surface effect of the structure due to the fact that the role of large the number of squeezing chambers of a complex section are made of the walls of the housing and the elastic filter chamber equipped with lining, arranged as indicated above, and without which it would be impossible to simplify and uniform deformation load.

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Claims (2)

1. HEADER FILTER FOR CLEANING OIL-CONTAINING WASTE WATERS, comprising a cylindrical body installed in the body at a distance from its walls, a cylindrical filter chamber made of an elastic material with an elastic filter load placed in it, nozzles for supplying purified water and drainage of wash water and filtrate and means for regeneration of the load with a nozzle for supplying a working agent, characterized in that, in order to improve the quality of the filtrate and simplify the design, the filter chamber is made of waterproof of elastic material, provided with overlays of elastic material more dense than the chamber material, in the form of rows of rectangles located along the diametrically opposite external sides of the cylindrical filter chamber, and a pipe for supplying the working agent is attached to the housing. 2. The filter according to claim 1, with the fact that the pads are attached to the cylindrical filter chamber with glue. SU ,,,, 1154214>