SU1761679A1 - Water cleaning unit - Google Patents

Abstract

The invention relates to chemical technology, in particular, to the technique of purifying natural, waste and recycled water from metal ions, suspended substances of mineral and organic origin, reducing salt content, defluorizing, etc. The purpose of the invention is to increase the cleaning efficiency by automating the process of removing contaminated water. portions of filtrate. The installation contains electrocoagulant 1, flotation unit 2, filter 3, siphon pipelines 6 and 9, hydraulic locks 7 and 10, collections of wash water 8 and sediment 11, storage tank 14, system and U-general pipelines 15 and 16. Automatic removal of contaminated portions of the filtrate is provided by the use of the storage tank 14 and the system and the U-shaped pipelines 15 and 16. 1 h. item f-ly, 1 ill.

Description

The invention relates to chemical technology, in particular, to the technique of separating liquid inhomogeneous media, namely, devices for purifying water from suspended and colloidal impurities and can be used to purify natural waters, drinking water in rural sparsely populated tourist and geological bases, and for the treatment of industrial wastewater and recycled water in the composition of temporary emergency or scientific and experimental treatment facilities.

The purpose of the invention is to increase the cleaning efficiency by automating the process of removing the first contaminated portions of the filtrate formed after washing the filtrate.

The drawing shows a diagram of the water treatment plant, a longitudinal section.

The water treatment plant includes a series-installed electrocoagulator 1, adjacent to the floater 2,

which is connected to filter 3. Filter 3 is equipped with piping for filtrate 4 and collecting and discharging wash water 5 The latter is connected to one end of the siphon pipe 6, the other end of which is fitted with a hydraulic lock 7, which in turn is connected to wash water collector 8. Electrocoagulator 1 and flotation device 2 with their sedimentary parts are connected to one end of the siphon pipe 9, the second end of which is equipped with a hydraulic lock 10, which in turn is connected to sediment collection 11, Siphon pipes 6 and 9 are interconnected by a jumper 12 installed besides, the siphon pipeline 6 is connected to the filter 3 by means of the pipeline 13. The pipeline 4 for removal of the filtrate is connected to the storage tank 14 by at least two, / and U-shaped pipelines, positions respectively 15 and 16. Some Konso

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The il-shaped pipeline 15 and the U-shaped pipeline 16 are connected to the filtrate discharge pipe 4, and the second ends of these pipelines are connected to the storage tank 14. At the same time, the U-shaped pipeline 16 is equipped with a filtrate overflow 17. The tank- The lower part of the battery is additionally connected by a pipe 18 to a siphon pipe 9 connecting the lower parts of the electrocoagulator 1 and the flotation cell 2. The battery 14 is also equipped with an additional filter 19 connected to a filtrate overflow pipe 17 and a siphon pipe gadfly 9 connecting the lower parts of the electrocoagulant 1 and the flotation cell 2 with a collection of sediment 11.

Water treatment plant works as follows.

Water contaminated, for example, with fluorine, metal ions, and suspended solids of mineral origin, is fed to a purification unit in electrocoagulant 1, where it is enriched with electrochemically generated coagulant. The separation of liquid from impurities occurs in the flotation unit 2 and filter 3 (fine cleaning of the liquid), while in the lower parts of the electrocoagulant 1 and the flotation unit 2 waste will accumulate, and the filtrate loading of the filtrate 3 will exhaust its capacity. Disposal of waste from the lower parts the electrocoagulator of the torus 1 and the flotation cell 2, as well as the regeneration of the filter loading of the filter 3, are carried out automatically by siphon pipes 6 and 9. In this case, the wash water is collected in the collector 8, and the waste (sediment) is collected in the collector 11. After regeneration ruyuschey load to the filtrate (withdrawn from the filter purified water) enter contaminated portions of water containing substance (metal hydroxides oil and so on.), re-contaminating the filtrate. For automatic removal of contaminated filtrate portions (FPD), the filtrate's discharge line is equipped with at least two (1) and U-shaped piping 15 and 16 and a tank-battery 14. In this case, the purified water containing PFB enters vertically installed connections L and U-shaped pipelines 15 and 16, connected to the filtrate discharge pipe 4. When the water level in these pipes rises to the inflection mark (1-pipe 15 and outflow from the pipe of the U-pipe 16, communicated with the storage tank 14, this tank is filled with water containing ZPF. As the tank 14 is filled, the subsequent portions of the filtrate will flow more cleanly than the previous ones, due to the washing out of the ZPF with a filter that is capable of holding contaminants.

14, the water level in the G and U-shaped pipelines is compared to the water level in the storage tank 14 and then rises to the level of the filtrate overflow pipe 17 connected to one of the ends

The U-shaped pipe 16. After this point, clean water without ZPF will flow out of the filtrate overflow pipeline 17, and portions of water will stop in the storage tank 14.

the operation of filter 3 in the filtering capacity-battery mode serves as a sump of the ZPF. Impurities (ZFP impurities) will precipitate and accumulate in the bottom of the tank 14. During the next regeneration of the filter charge, the impurities from the bottom will automatically be removed through the pipe 18 through the siphon pipe 9. Pure water, separated from the ZPP, will flow over / 7- shaped pipeline 15 in

filter, while washing the drainage system. The consumption of waste and clean water from the tank-battery 14 is regulated by the capacity of the L-shaped pipeline 15 and pipe 18. At the time

the end of the regeneration of the filtering charge and the removal of water impurities from the bottom parts of the electrocoagulant 1, the flotation cell 2, and the storage tank 14, the latter will be emptied and the next SPF will be ready to receive.

To ensure the reliability of the removal of clean water from the storage tank 14, an additional

a filter 19 connected to a filtrate overflow pipeline 17 and to a siphon pipe 9 connecting the lower parts of electrocoagulant 1 and flotation device 2. This also provides automatic regeneration of the loading of the additional filter. The additional filter can be installed as a filter cartridge, and a fabric can be used as the filtering load.

fibrous material, as well as bulk material, such as activated carbon and / or crushed expanded clay.

When using the proposed plant, the cleaning efficiency is increased by 3-5% (23-41%) as compared with the known technical solution. Automation of the process of discharging the first contaminated portions of the filtrate is ensured. Service personnel are not involved in the unattractive and unpleasant

The operations furthermore improve the reliability of the production of purified water.

Claims (2)

Claims 1. A water treatment plant comprising a successively installed electric coagulant, a flotation cell and a filter, pipelines for removal of filtrate and collection and removal of wash water, as well as collectors of wash water and sludge, and at least two siphon pipelines, one of which is at one end connected to the collection and removal pipeline of the washing water, and the other, equipped with a water seal, is connected to the collection of washing water, the second siphon pipeline is connected at one end to the lower parts of the electrocoagulant and flotation cell, and others coal with a water seal is connected to a sludge collector, the upper parts of the siphon pipelines are connected by a jumper, and the siphon pipe connected to the collection and drainage pipe of the wash water is connected by means of a pipe with a filter, characterized in that automating the process of withdrawing the first contaminated portions of the filtrate formed after washing the filter, it is equipped with a storage tank connected to the pipeline of withdrawal of the filtrate by not changing e and two U-shaped conduits and a lower part - with a siphon pipe conduit connecting said lower portion of the skimmer and elektrokoagul torus with sludge collection, and the U-shaped pipe provided with a conduit overflow filtrate. 2. Installation under item 1, characterized in that the capacity of the battery is equipped with a filter connected to the pipeline connecting the lower parts of the electrocoagulant and the flotation cell with a sludge collector. / J / 4 16/7 V / f 7 / O //