RU1803390C - Continuous action water purifying installation - Google Patents

Description

the pipeline 5 is connected to the pipe 6. by means of a pipe 9, the outlet 10 of which in the cavity of this pipe is directed towards the housing 1. A device for removing purified water is installed below the water level in the housing. The upper part of the cavity of the housing 1 is connected by a tube 13 to an ejector 14, which is installed on the outlet pipe 11 of the outlet for purified water. A drain pipe 15 is located in the bottom of the body to discharge sediment. 2z. P.F.-ly, 1 ill.

The invention relates to wastewater treatment by biofiltration and can be used in the operation of treatment facilities.

The purpose of the invention is to reduce the cost of cleaning and improve its quality.

The drawing shows a continuous water treatment plant, longitudinal section.

The installation consists of a sealed housing 1, the cavity of which, for example, is 1/2 filled with purified water with a loading. 2. A vertical pipe is installed in the housing 3. The upper end of the pipe is located above the surface of the floating loading, and under its lower end is located wives with a gap 4 of the pneumatic conduit 5 connected to a source of excess air pressure (not shown in the drawing). The lower end of the pipe 3 is installed in the load 2. Next to it is a device for supplying purified water, consisting of an inlet pipe 6 and a system of perforated pipes 7, and the holes 8 of their perforation are directed to the bottom of the housing. The pneumatic pipe 5 is connected to the cavity of the pipe 6 by means of a tube 9, the outlet 10 of which in the cavity of this pipe is directed towards the housing 1. The device for removing purified water consists of an outlet pipe 11 and a system of perforated pipes 12 installed in the load 2, located below the level water in the housing 1. The upper part of the cavity of the housing is connected by a tube 13 to the ejector 14, which is mounted on the nozzle 11. The bottom of the housing is made inclined, for example, in the form of a pyramid or cone and connected to the drainage pipe 15, provided nym valve 16. The casing mounted pressure gauge 17. The tubes 9 and 13 are provided with rectifiers 18 and 19. In the cavity of the housing 1 can be installed any number of nozzles 3. For finer water purification plant connected to the skimmer (not shown).

Installation works as follows,

The water to be cleaned through the pipe 6 through the system of perforated pipes 7 enters the housing 1, while the pneumatic pipe 5 supplies air under excess pressure to the inlet to the pipe 3. The mixture of water and the lower layers of the floating charge 2 is carried away by the air flow and moves through the gap 4 into the pipe 3 up and upon exiting it, it falls onto the surface of the floating loading located above the water level in the housing 1, since under the action of the lower loading layers its part is located above the water level in the housing 1. The biological ple nanocrystals formed on the surface of loading granules 2 with atmospheric oxygen (supplied to the housing through pneumatic, water 5) or with nutrients from purified water, during movement

lower layers of the load on its surface, that is, from a liquid into a gaseous medium (atmospheric air). Aerobic bacteria attached to the surface of the granules of the load 2, oxidize the decomposition products

organic substances to harmless compounds. In a moving charging plant, oxygen is transported in three directions: in contact with the supplied air and biofilm,

its contact with air accumulated in the upper part of the housing 1 during the scattering of loading granules, water and activated sludge lifted from the lower part of the housing through a pipe 3 acting as a hydraulic elevator, as well as when water is supplied to the housing 1, since the pneumatic pipe 5 is connected with pipe b with the possibility of supplying air to it. At the same time, water enters the case partially saturated with air (oxygen), and

the insoluble volume of air when it enters the volume of the load 2 rises in the gap between its granules upwards by additionally coming into contact with the biological film located on the surface

granules. During the operation of the installation, the loading granules continuously circulate in the cavity of the housing, while

Continuous replacement of water to be treated. In the process of supplying air to the housing 1, the pressure in it increases (it intensifies the process of dissolving air (oxygen) in water and, accordingly, the process of its biological cleaning, when the unit plays the role of a saturator 11, water is simultaneously prepared in it (saturation air) for subsequent flotation. The pressure in the housing is controlled by a manometer 17. For additional saturation, drain water from housing 1 to a further formation (flotation) and regulation of pressure and housing 1, its upper part of the connection cavity It is not connected by the tube 13 through the ejector 14 with the nozzle 11. Due to the intake of air from the casing 13 from the casing, where it is located with excess pressure, the ejector will suck in the total air even with a slight pressure at its inlet. zones in the casing and ensures the placement of the lowering loading layers by the gravity of the upper layers located above the water level in the casing and the dynamics of the jets of water supplied for cleaning to the cabin 3.

j Arrangement of a device for supplying water near the lower end and the direction of its outlet openings the bottom of the housing allows you to intensify the process of recirculation of the load and in the housing, since the direction vector of its movement coincides with the direction vector | into the case. In addition, 4 of the undissolved air from the water supply rjiou moves upward in the body cavity, additionally in contact with the bulk of the charge, located below the water level in the body 1. All this ensures intensive uniform recirculation of the entire volume of the charge and contributes to an increase in oxidative power installation. Valves 18 and 19 provide air supply control in the pipe 6 and its outlet from the housing 1. j During recirculation of the load, the granules are mixed and abraded, while self-cleaning occurs and the biomass te can grow excessively in thickness, otherwise - 1st system would clog. The renewal of the film of Ciomass intensifies the process of elimination of pollution. Large parts of the biomass and solid phase rejected film. Contaminants delayed by loading in the Filtration Process and draining treated water from the casing are washed out of the lower foams by the supplied water into the casing and settle in the bottom of the casing, where, for example,

periodically discharged through the drainage pipe 15, and smaller ones, under the influence of the dynamics of the water jets supplied for cleaning, are suspended and recycled with granules to the upper part of the housing. This intensifies the process of biological purification of water, since the contact area of biocinosis with both air and water increases.

The location of the upper end of the pipe 3 above the surface of the floating granules, and its lower end in the lower layers of the load with a pneumatic conduit below it, connected to a source of excess air pressure,

creates conditions for feeding the loading granules from the lower underlying layers located below the water level in the housing to the surface of granules located above the water level in the housing. It provides

intensive recirculation of the load and alternating saturation of the water and the biological film with oxygen or nutrients from the treated water, which intensifies the oxidation of products

decomposition of organic substances into harmless compounds and increases the oxidizing power of the plant. In addition, the intensive saturation of purified water with air in an airtight housing under excessive pressure, when it is simultaneously prepared for subsequent flotation treatment, reduces the cost of further fine-cleaning it from biocinosis.

The connection of the pneumatic line with the device for supplying purified water contributes to additional saturation of the purified water with oxygen and its additional contact with the biofilm on the loading granules located below the water in the casing, which further intensifies the processes of oxidation and decomposition of organic substances into harmless compounds, while increasing oxidative power installation.

 The creation of excessive air pressure in the sealed housing allows for more complete utilization of the oxygen present in it and reduces the possibility of foaming. The adjustable exhaust air discharge allows it to be sent for further processing in order to destroy its microbial content and reduce its seeding. The implementation of the process in a sealed enclosure helps to stabilize the temperature regime of wastewater treatment. If necessary: the external surface of the housing may be coated with an insulating layer.

The design of the installation is simple, simple and reliable in operation.

The installation provides filtration of the purified water through the charge before it is removed from the housing, which improves the quality and reduces the cost of its further purification.,

Thus, the proposed installation for continuous water treatment reduces the cost of treatment and improves the quality of its treatment by intensifying the biochemical treatment of water in the casing with high air pressure, filtering the water through the charge before it is withdrawn from the casing, preparing the water for subsequent purification by flotation simplification of its design, operation and reduction of metal consumption.

Claims (3)

1. Installation for the treatment of continuous water, comprising a housing with floating loading, circulation device, pipelines for supplying raw water and for discharging treated water, characterized in that, in order to reduce costs of cleaning and improving the quality of water purification, the casing is sealed, and the circulation device is made in the form of a vertical pipe located in the load, with an air duct located near the lower end of the pipe and a source water supply pipe in which holes are directed into the bottom part of the body. 2. Installation according to claim 1, characterized in that it is equipped with an ejector mounted on the purified water discharge pipe and in communication with the upper part of the housing. 3. Installation according to claim 1, characterized in that. that the pneumatic pipe is connected to the source water supply pipe.