RU2434814C1 - Water treatment apparatus - Google Patents

Abstract

FIELD: process engineering. ^ SUBSTANCE: invention relates to water treatment devices, and may be used for removal of iron and other impurities from natural water. Proposed device comprises ozonising chamber, air ejector and pump communicated by pipeline to make circulation loop, cavitator arranged inside said ozonising chamber, ozone generator communicated with ejector, and pressure filter. Additionally, proposed unit comprises aeration chamber with cover and initial water feed branch pipe, finisher for complete oxidation of contaminants arranged between ozonising chamber and filter, pure water accumulator, rinsing water treatment unit including, muddy water accumulator, hydraulic mixer made up of pipeline with open end arranged inside muddy water accumulator and opposite end connected via pump with branch pipe mounted in the bottom of said accumulator, and sprayer mounted inside muddy water accumulator and communicated via pump with pure water accumulator. ^ EFFECT: efficient water treatment. ^ 6 cl, 3 dwg, 1 tbl

Description

The invention relates to devices for water purification, and more specifically to the removal of iron and other pollutants from natural, mainly underground, water by preliminary oxidation of water pollutants by ozone and intensification of further water purification, and can be used mainly for water purification for the needs of the population .

The prior art devices are known in which ozonation is used to clean and disinfect natural and waste waters [1. Orlov V.A. Ozonation of water. - M .: Stroyizdat, 1984. - 88 p .; 2. Kulsky L.A., Strokach P.P. Technology of natural water purification. Kiev: Vishka school. 1981. S.176-177, 180-181 .; 3. RF patent for the invention No. 2228916, IPC C02F 9/04], cavitation [4. Auth. USSR certificate No. 1502481, IPC C02F 1/64], filtering [[3], 5. RF patent for utility model No. 35730, IPC B01D 24/48, F16K 15/04; 6. RF patent for the invention No. 2225243, IPC B01D 24/10, 24/38].

An analogue for the claimed installation is an automatic filter installation for water purification and water locks for this installation according to the patent of the Russian Federation No. 35730 class. B01D 24/48, F16K 15/04. [5]. The installation comprises a filter with filtering material, a piping system for supplying and discharging water, equipped with pumps, check valves and hydraulic locks, as well as a pressure measuring device connected to the filter and the filtering process control unit. Due to the interaction of these nodes when the filter material is contaminated, a signal is transmitted to the control unit and, as a result, the entire filtering system switches from the operating mode to the washing mode. The installation does not provide a solution to the problem of disposal of waste generated in the form of wash water containing ferrous sediment. The discharge of wastewater into the sewers is undesirable for economic and environmental reasons.

Closest to the claimed in technical essence is the installation for water purification by ozonation according to the patent for the invention of the Russian Federation No. 2228916, IPC C02F 9/04 [3]. The installation comprises an oxidation (ozonation) chamber with a source water supply pipe and a pipe for removing purified water, to which a pressure filter is connected, which performs the final stage of water purification. An ejector is installed above the oxidation chamber, which is connected to an ozone generator. Water from the oxidation chamber by means of a pump enters the ejector, and from the ejector to the oxidation chamber. These devices, connected by a pipeline, form a circulation circuit. A cavitator is placed in the oxidation chamber. Water coming from an ejector saturated with ozone and air is subjected to cavitation, which increases the efficiency of water purification due to the intensification of oxidation of pollutants.

However, the purification scheme proposed by patent No. 2228916 does not provide for the treatment of water with stable forms of pollutants, requiring a long period of additional oxidation before filtering. In addition, there is no system for the reuse of washing wastewater - waste from the filtering stage. During the operation of the installation, it is required to periodically (after 24-36 hours, depending on the degree of contamination of the source water and pick-up) rinse the filter with clean water to remove particles of contaminants from the intergranular space of the filter material. This leads to the formation of a large amount of contaminated with water-insoluble sludge (mainly consisting of iron compounds) wash water. When dumping them into the sewer, they, condensing, clog the pipelines; when placed on special silt sites, they negatively affect the state of the environment.

The objective of the invention: to create a highly reliable device that provides effective water purification from oxidation-resistant pollutants, mainly from iron, and the disposal of waste water.

The technical result that allows us to solve the problem is to more fully oxidize the pollutants by increasing the duration of their contact with oxygen, and to reuse clarified wash water by increasing the degree of clarification by thickening and removing the residue of iron-containing waste.

The problem is solved as follows. Similarly to the known, the inventive device comprises an ozonation chamber with a cover made of stainless steel, an ejector and a pump, which are connected in series with each other by pipelines in the circulation circuit, a pressure gauge mounted on the pipeline of the circulation circuit. The ozonization chamber has a meter for lower and upper water levels, a cavitator located inside the ozonation chamber above the upper predetermined water level and rigidly connected to the pipeline connecting the ozonation chamber to the ejector. The inventive device also contains an ozone generator connected to the ejector, and a pressure filter connected, for example, by means of a pump, to a pipe for draining clean water.

But unlike the prototype, the claimed device additionally contains an aeration chamber with a lid and a nozzle for supplying the source water, made of stainless steel, an air ejector and a pump connected by pipelines to the circulation circuit, a pressure gauge installed on the pipeline of the circulation circuit. In this case, the ozonation chamber is connected by a pipe to the aeration chamber. In addition, the inventive device additionally contains a detector for the complete oxidation of pollutants, made of stainless steel in the form of a cylindrical container with a lid, located between the ozonation chamber and the filter and connected to them by pipelines. An aperture is made in the bottom of the pre-heater to remove the iron-containing sludge. The inventive device also further comprises a clean water storage device connected to a pipe for draining clean water from the filter, and a wash water treatment unit including a dirty wash water storage device in the form of a container with a lid and a cone-shaped bottom made of stainless steel. The accumulator of dirty wash water is connected through a hydraulic valve to a filter and through a pump to an aeration chamber. The dirty wash water reservoir contains a water mixer in the form of a pipeline, the open end of which is located inside the dirty wash water reservoir, and the other end is rigidly connected through a pump to a pipe mounted in the bottom of the reservoir, forming a circulation loop. Inside the accumulator of dirty washing water in its upper part there is a sprinkler connected through a pump to a reservoir of clean water. In addition, the inventive device further comprises a container for wet iron-containing sludge, connected through a manometer and pump to a nozzle mounted in the bottom of the accumulator of dirty washing water. In addition, the aeration chamber, the dirty wash water storage tank, the heater and the container for wet iron sludge are equipped with meters for lower and upper levels, respectively, of the source water, dirty wash water and wet iron sludge.

In special cases, each cavitator, as in the prototype, is made in the form of two disks of the same diameter mounted on top of each other with a gap and rigidly fastened to each other, while in the upper disk there is a central through channel rigidly connected to the pipeline connecting the oxidation chamber to an ejector, and on the surfaces of the disks facing each other, protrusions are arranged concentrically and tapering to a gap.

The installation is equipped with a device for automatically turning on / off the supply of source water, dirty wash water and wet iron-containing sludge, while all meters of the lower and upper levels are connected to this device.

The filter is equipped with an automatic flushing system.

The open end of the mixer pipe may be bent toward the center of the dirty wash water reservoir.

The ozonation chamber, the aeration chamber, and the pre-heater are cylindrical.

The proposed design allows to achieve 90% reuse of dirty wash water, provides the ability to collect wet iron-containing sludge, allows it to be dehydrated in the future in a known manner (by freezing, centrifuging, processing on press filters, etc.) and disposal, for example, use as a component of the raw mix for the manufacture of building materials.

Differences from the prototype confirm the novelty of the claimed device.

In the constructions and devices known to the applicants for the purification of natural waters with a high iron content, scheme variants are usually implemented: a) simplified aeration - filtering with open filters; b) aeration - filtering on pressure filters; c) simplified aeration - 2-stage filtration; c) simplified aeration - filtration - ion-exchange softening; d) aeration - filtration - sorption; d) ozonation - filtration - sorption [[2], 7. Nikoladze GI Technology of natural water purification. - M .: VSH, 1987. - 479 p.]. In the vast majority of cases, the implementation of these schemes does not take into account the time factor, i.e. ignored the need to provide from 0.5 to 2 hours (depending on the composition of the pollutants, temperature and other conditions) the aging of the water treated with oxidizing agents before filtering. This is necessary for continuous chemical processes (oxidation, hydrolysis, colloidation, crystallization, adsorption), which underlie the formation of pollutants in the sediment. Such devices in which the processes of "ripening" (oxidation, crystallization and coagulation) would occur in a similar way, i.e. For a long time in special chambers - monitors, the applicants are not known. This fact allows us to judge the presence of inventive step in the inventive device.

The study of scientific and technical literature showed that in practice the problem of recycling iron-containing wash water was not found a rational solution either. In accordance with the procedure described in the current fundamental document SNiP 2.04.02-84 "Water supply. External networks and structures" (Appendix 9), the sedimentation of the wash water should take place within 2 or 4 hours, depending on the nature of the water treatment, after which clarified water is again supplied to the filtering facilities, and the accumulated sludge is sent to thickeners for additional compaction or to the sludge dewatering facilities. The total duration of sediment accumulation during repeated periodic filling is at least 8 hours. In reality, the deposition takes much longer, reaching 24 or more hours [8. Lisetskiy V.N., Andreichenko A.A., Lisetskaya T.A. Formation and capture of solid sludge during water treatment. // Housing and communal services, 2003. No. 2. S.61-64; 9. Andreev DA., Lukashevich O.D., Cherkashin V.I. Isolation and disposal of iron-containing sludge from waterworks (using the example of Tomsk water intake) // Water: technology and ecology. - 2008. - No. 2. S.21-29.]. At the same time, the volume of the zone of sediment accumulation in sedimentation tanks is very large, because sludge moisture in sedimentation tanks is 97-99%. Even if the functions of sedimentation tanks and thickeners are combined, which SNiP 2.04.02-84 admits, the low manufacturability of the described process is obvious, primarily due to its duration and cumbersome structures. Other options for cleaning wash water - by hardware methods (filtering on a drum vacuum filter, centrifugation, processing on press filters) [2, 7, 8] are not economically viable. As a result, owners of plants, organizations, and enterprises abandon inefficient systems for reuse of wash water and disposal of sludge. Wash water is discharged into the sewer, on the terrain or into water bodies and streams. The amount of wash water is usually about 10% of the total volume of water passed through the filter. Given this fact, it is clear that annual environmental pollution in the long term will lead to irreversible negative geoecological consequences. The applicants are not aware of such reliable, low-energy devices in which more than 90% of dirty wash water is reused, as in the inventive device. This fact allows us to judge the presence of inventive step in the inventive device.

The presence of an inventive step also confirms that a simple design yields a high technical result (degree of water purification of more than 90%), which is confirmed in practice. Among the known solutions, such a result was not found.

Figure 1 presents a block diagram of the proposed installation for water purification.

Figure 2 shows a diagram of a washing water treatment unit.

Figure 3 shows a diagram of the aeration unit.

Installation for water treatment contains an aeration chamber 1 made of stainless steel, made in the form of a closed cylindrical container with a lid. The aeration chamber (Fig. 1) is connected by a pipeline to the ozonation chamber 2. The ozonation chamber is connected to a batcher 3 made of stainless steel in the form of a closed cylindrical container with a lid. The batcher 3 is connected to a pressure filter 4, made in the form of a cylindrical body with a conical cover and a bottom, which contains a granular filter material. The pressure filter 4 is connected to a clean water storage device 5 and through a hydraulic valve 10 (FIG. 2) to a dirty washing water storage device (NIPP) 6, as well as an automatic washing system. Purified water is discharged from the clean water storage device 5 to the consumer. НГПВ 6 is intended for sedimentation of the washing water from the pressure filter 4. НГПВ 6 is connected by a reservoir for wet iron-containing sludge (ЕЖСО) 7. A pressure gauge is installed on the pipeline connecting the НГПВ 6 with ЕЖСО 7. In the center of the casing of the accumulator is a dirty washing water 6 mounted sprinkler 11. To control the upper and lower water levels in the OGPV 6 mounted water level meters 12, the signals from which are fed to the control panel (not shown). After settling for a period of time determined during technological surveys (usually from 8 to 16 hours), the upper clarified layer of washing water is pumped in portions into the aeration chamber 1. The pipes connected to the pumps 13 are mounted in the lower part of the cone-shaped bottom of the НГПВ 6. and 14. The bottom layer of wash water containing iron-containing sediment (ZhSO) is agitated in the cone НГПВ 6 using a hydro mixer 16 and pump 14. The accumulator of dirty wash water 6 in the lid contains a sealed hatch and a pipe connected to the pipe 16. NGPV vodom agitators 6, the pump 14 and the agitators form a circulation loop. The hydromesh mixer 16 is connected by a pipe through a pump 14 to a branch pipe withdrawn from the bottom of the conical bottom of the OGPV 6. The pump 13 is used to feed the turbid iron-containing sludge (10% of the total volume of washing water) into the technological vessel for wet iron-containing sludge (ЕЖСО) 7. In order to flush the inner walls of NGPV 6 from ZhSS from pure water storage 5, pure water is supplied by means of a pump 15 connected by a pipe to a sprayer 11. NGPV 6 is made of stainless steel.

Technological capacity for wet iron-containing sludge (EZhSO) 7 is intended for the collection and storage of ZhSS. ЕЖСО 7 is made in the form of a barrel, has a hatch with a removable cover. In ЕЖСО 7 the water level meter is mounted, the signals from which are fed to the control panel (not shown). The volume of ЕЖСО 7 is calculated depending on the productivity of the entire installation and the content of ЖСО in the wash water. For example, for 1.5 months of operation of the installation, a volume of EZhSO 7 of 10 m ^{3 is} sufficient. After filling EZHSO 7, the sediment is unloaded from it and transported by road (or otherwise) for dehydration and use as raw material, for example, in the production of building materials.

The aeration chamber 1 (Figure 3) of a cylindrical shape made of stainless steel, in the cover 17 contains a pipe 18 for the source water and a pipe 19 for introducing air from the ejector 20. Pipes 21, 22, 23 are connected to the aeration chamber 1, forming a circulation loop . Pumps 24 (providing air circulation) and 25 (connected to the ozonation chamber), pressure gauge 26, cavitator 27 are connected to the aeration chamber 1. A water level meter 28 is mounted in the wall of the aeration chamber 1, assuming different positions, as shown in Fig. 3, which connected to a source water on / off device (not shown in the drawing).

The ozonation chamber 2 (figure 1) is made similar to the aeration chamber.

The device operates as follows.

The source water enters the aeration chamber 1, where it is enriched with atmospheric oxygen and freed of part of carbon dioxide, ammonia, hydrogen sulfide, methane, the presence of which is possible in underground water. Similarly to the oxidation chamber according to patent No. 2228916, water enriched in air through a pipeline, which is one of the pipelines of the circulation circuit, is sent to a cavitator (not shown) located in the aeration chamber 1. Any cavitator known in the art may be used, including a cavitator according to the prior art . In the latter case, in the aeration chamber 1, water under pressure moves from the center to the periphery. At the same time, it expands repeatedly and sequentially, contracting, experiencing mechanical shock, turbulence, falling into the space between the protrusions of the cavitator (patent No. 2228916), gives a thin film when leaving the gap between the disks. This provides a high degree of dispersion of water and air. Turbulent flows of oxygenated water at a high speed break out from the cavitator around the circumference and fall from a height of ~ 800 mm at a tank height of ~ 2 m.Then, the water passing through the cavitation device is connected to the rest of the water located in the lower part of the aeration chamber. Thus, conditions are provided for intensive mixing of water with oxygen. In this case, the concentration of oxygen, which is both in a truly dissolved state and in the form of finely dispersed bubbles in the colloidal state, reaches the highest possible values. Then the water enters the ozonization chamber 2. In the ozonation chamber, water is repeatedly circulated, the ozone-air-water mixture is dispersed, and oxidative processes actively occur. This provides high efficiency removal of oxidized and coagulated contaminants on the filter.

The resulting water-gas mixture is repeatedly circulated through the ejector and cavitator thanks to the pump. At the same time, the pressure (not shown) and the water level in the system are automatically monitored with a manometer, which eliminates the occurrence of emergency situations, since the device automatically turns off in case of a violation of the specified operating mode (the control device, including the source water on / off device, is not shown in the diagram) . Management can be carried out using a computer. The upper target level is determined based on the location of the cavitator and the volume of the oxidation chamber. Typically, the water level is half the volume of chamber 2. As in patent No. 2228916, when the specified upper level of water in the oxidation chamber is reached, the pump supplying water from the aeration chamber 1 is automatically turned off through the source water on / off device. This pump is turned on when the lower permissible predetermined water level in the ozonation chamber 2, which is determined by the location of the pipelines and the time of water treatment. The pump is turned on and off automatically, based on the readings of the level meter (the control device is not considered in the application). The total residence time of water in the ozonation chamber, necessary to “start” the oxidation and destruction of all reduced forms of pollutants, is 10-30 minutes and depends on the composition of the water coming from the aeration chamber 1. Then the water enters the heater 3, where it is located for about 30 minutes to complete the processes of oxidation, destruction, crystallization and coagulation.

After achieving the desired effect, the system using hydraulic valves and gates (not shown) switches to pumping water with a pump (not shown) to filter 4 to remove sediment (mainly iron-containing). Filter 4 operates in automatic mode, the duration of the filter cycle and regeneration are set on the basis of controlled indicators. The control system of figure 1. not shown. The purified water is sent to a clean water storage device 5, from which it is supplied to the consumer.

The pressure filter 4 is connected through a hydraulic valve 10 to the accumulator of dirty wash water (NGPV) 6, as well as to an automatic flushing system. НГПВ 6 is intended for sedimentation of washing water from the pressure filter 4. After sedimentation during the time determined during technological surveys (usually from 8 to 16 hours), the upper clarified layer of washing water, namely, about 90% of the total volume, using pump 9, it is fed in portions synchronously with water from the well into the aeration chamber 1, mixing in the ratio 1: 4 (4 parts of natural (initial) water fall to 1 part of the washing water). In contrast to the current SNiP 2.04.02-84 "Water supply. External networks and structures" (Appendix 9), in which it is recommended to add wash wastewater to the treated water before the sump, in the inventive device clarified wash water is added at the very first stage of water treatment.

The lower layer of washing water containing ZhSS is agitated in the cone NGPV 6 using a hydromesh mixer 16 and pump 14 and using pump 13 is pumped to EZHSO 7. The volume of wet iron-containing sludge is about 10% of the total volume of washing water. In order to flush the inner walls of НГПВ 6 from ЖСО from the clean water storage device 5, clean water is pulsed for 2–3 min using powerful pump 15 by means of a pump 15 connected by a pipe to the sprayer 11. After the complete removal of the liquid cleaning composition, the storage device 6 is finally cleaned and ready to receive washing water from the filter. The control of the processes of pumping wash water and sludge is carried out automatically (not considered in the application, not shown in the diagrams). After filling EZHSO 7, the sediment is unloaded from it and transported by road (or otherwise) for dehydration and use as a raw material in the production of building materials (or otherwise).

As a result, the advantages of ejection dispersion and cavitation are realized in a single system, which improves the efficiency of water saturation with air and ozone, and as a result, the degree of water purification increases. The NGPV conical bottom provides sludge collection in the lower part of the drive; as a result, 90% of the water is not irretrievably lost, but is returned to the process.

The effectiveness of the claimed device is shown by the example of its implementation in the purification of natural waters with a high iron content.

Example 1. Water purification by ozonation was carried out as follows. Water containing 6.3 mg / dm ^{3 of} iron, 0.2 mg / dm ^{3 of} manganese, having a permanganate oxidation of 5.4 mgO / dm ³ from a well, was pumped (not shown) into aeration chamber 1 with a height of 2000 mm and filled the chamber. The upper water level in the aeration chamber was set from 800 to 1000 mm from the bottom. Through the pipeline, using a pump, water was sent to an ejector, where it was saturated with air. The resulting gas-water mixture entered the cavitator, located under the cover of the aeration chamber at a distance of 100 mm, dispersed, subjected to hydrodynamic, ultrasonic and other influences, connected with water filling the aeration chamber 1. The drop height of gas-water jets (drops) ranged from 900 to 1100 mm. As the jets moved, additional droplet crushing occurred. Then the described cycle was repeated. The aeration time was 10 minutes. Then the water entered the ozonation chamber 2. The dose of ozone, due to preliminary aeration of the water, was reduced by 2 times compared with the amount of ozone required without using an aeration chamber, i.e. the dose was 0.9% instead of 1.8%. Ozonation was carried out similarly to the described aeration, with the difference that the composition of the water-air mixture included additional ozone. The length of time the water remained in the ozonation chamber was 10 minutes. After such an oxidative treatment, water was sent to the detector 3, where the processes of oxidation, destruction, hydrolysis, crystallization, adsorption, colloidation, initiated by the action carried out in the aeration and ozonation chambers ended. From the pre-heater, the treated water was sent for filtration, where it was freed from the ZhSO. The purified water was sent to a clean water tank 5. After filter 4 was contaminated, the washing mode was activated, which lasted 6 minutes. Wash water was supplied to NGPV. Wash water was sedimented in NGPV for 14 hours, then the clarified part was sent to the aeration chamber, and the sediment entered a container for wet ZhSS.

The following results are obtained.

The total duration of aeration and ozonation was 20 min; the ozone concentration reached 0.9%. As a result of the saturation of water with air, ozone, oxygen, the gases dissolved in water (CO ₂ , NH ₃ , H ₂ S, CH ₄ ) were removed, microorganisms were destroyed, organic substances, ferrous ions, manganese and other low-valent metal ions that started to pass from soluble to precipitated (solid) state. Gaseous oxidation products were removed along with residual ozone. The volume of wash water was 5% of the total volume of source water from a source treated during the filter cycle. Based on the assumption that 90% of the wash water was returned to the technological process, the total loss of water firmly associated with ZhSS was 10% × 5%: 100% = 0.5%. The efficiency of using the source of natural water was 99.5%. The resulting precipitate was small. After additional dehydration (for example, by freezing), it can be disposed of in the construction industry or otherwise.

Experimental results indicating improvement in water quality after ozonation and filtration are presented in the table.

A decrease in permanganate oxidizability, a decrease in the content of iron and manganese in the treated water, as can be seen from the table, are direct evidence of effective water purification.

Thus, the inventive device can significantly improve the efficiency of water purification by increasing the amount of air and ozone transferred to the liquid, the duration of the contact of gases with water and a high degree of dispersion of gases in water. The environmental effect was achieved: 1) resource saving due to reuse of wash water: instead of taking fresh water from the well, clarified wash water is used; 2) concentration of washing water sludge and its direction for processing is of environmental importance.

Table. Changes in the composition of groundwater during treatment on the inventive device. No. Indicators, units Source water Purified water one Permanganate oxidation, mgO / dm ³ 5,4 0.8 2 Iron, mg / dm ³ 6.3 0.01 3 Manganese, mg / dm ³ 0.2 0.02

The invention is industrially applicable. The device passed not only experimental testing of the process, but also tests in production conditions, which showed a high (90% or more) degree of water purification from pollutants. The device is successfully used in wells in the suburban villages of Anikino and Kuzovlevo of the Tomsk region. The advantage of the claimed installation for water treatment is the ability to operate in specially protected areas, in water protection zones where any discharge of wastewater is prohibited.

Claims (6)

1. Installation for water treatment, containing an ozonation chamber with a cover made of stainless steel, an ejector and a pump, which are connected in series with each other by pipelines in the circulation circuit, a pressure gauge installed on the pipeline of the circulation circuit, a meter for lower and upper water levels in the ozonation chamber, a cavitator located inside the ozonation chamber above the upper predetermined water level and rigidly connected to a pipeline connecting the ozonation chamber to the ejector, an ozone generator connected with an ejector and a pressure filter, connected, for example, by means of a pump, to a pipe for draining clean water, characterized in that it further comprises an aeration chamber with a lid and a nozzle for supplying the source water, made of stainless steel, an air ejector and a pump connected between each other by pipelines to the circulation circuit, a pressure gauge installed on the pipeline of the circulation circuit, while the ozonation chamber is connected by a pipeline to the aeration chamber; additionally contains a heater for the complete oxidation of pollutants, made of stainless steel in the form of a cylindrical container with a lid, in the bottom of which there is a hole for removing iron-containing sludge, located between the ozonation chamber and the filter and connected to them by pipelines, in addition, it additionally contains a storage of pure water, connected to a pipeline for draining clean water from the filter, and a washing water treatment unit including a dirty washing water storage device in the form of a container with a lid and a conical bottom made of stainless steel, connected through a hydraulic valve to the filter and through the pump to an aeration chamber, a water mixer in the form of a pipe, the open end of which is located inside the dirty wash water tank, and the other end is rigidly connected to the nozzle mounted in the bottom of the specified the drive, forming a circulation circuit, a sprinkler installed inside the dirty wash water storage in its upper part and connected through the pump to the clean water storage, and a container for iron-containing sludge, connected through a manometer and pump to a nozzle mounted in the bottom of the accumulator, in addition, the aeration chamber, the dirty wash-water accumulator, the heater and the tank for wet iron-containing sludge are equipped with measuring instruments for the lower and upper levels of the source water, dirty washing water and wet iron-containing draft. 2. Installation according to claim 1, characterized in that each cavitator is made in the form of two disks of the same diameter mounted one above the other with a gap and rigidly fastened to each other, while in the upper disk there is a central through channel rigidly connected to the pipeline connecting the chamber oxidation with an ejector, and protrusions arranged concentrically and tapering to the gap are made on the surfaces of the disks facing each other. 3. The installation according to claim 1, characterized in that it is equipped with a device for automatically turning on / off the supply of source water, dirty wash water and wet iron sludge, while all meters of the lower and upper levels are connected to this device. 4. Installation according to claim 1, characterized in that the filter is equipped with an automatic washing system. 5. Installation according to claim 1, characterized in that the open end of the pipeline of the mixer is bent to the center of the accumulator of dirty wash water. 6. Installation according to claim 1, characterized in that the ozonation chamber, the aeration chamber and the batcher are made cylindrical.