RU2448050C2 - Water floatation treatment apparatus - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: apparatus has a rectangular housing divided into linked chambers by paired parallel partition walls. The chambers are arranged into two rows, wherein the surface area of the chambers in plan view increases in the direction of flow of water. In each chamber, air and water ejectors and devices for removing floating dirt are installed in devices for recirculating purified water. A dirt monitoring sensor, which transmits a signal through a controller to the valve of the module for outlet of water from the apparatus, enables to reduce the volume of water removed together with the trapped dirt since the signal comes from the sensor upon accumulation of floating dirt, which also allows for more efficient operation of the apparatus.

EFFECT: apparatus enables to treat water with high efficiency and reliability.

3 dwg

Description

The invention relates to devices for wastewater treatment.

A device for wastewater treatment is known (USSR AS No. 429030, published on 04.25.1974, Bulletin No. 19), comprising a housing divided by paired baffles into chambers and equipped with pipes for supplying an air-water mixture, a device for recycling purified water, a dispenser coagulant and scraper mechanism.

The disadvantages of this device are the high energy consumption and the large amount of water removed from the device along with trapped contaminants.

A known installation for flotation water treatment (USSR AS No. 785205, published December 7, 1980, bulletin No. 15) is the closest analogue containing a rectangular casing, divided into communicating chambers by paired parallel partitions, between which pipelines for supplying an air-water mixture are placed , a device for recycling purified water, consisting of a pump, an ejector and a pressure tank, water inlet and outlet units and a mechanism for removing pop-up contaminants, additional pipelines located between partitions chischaemoy water and optional ejector installed after the headbox.

The disadvantages of this installation are:

- the possibility of using water-air ejectors in the recycled water recirculation device is not fully used, which cannot provide higher flotation efficiency;

- there is no sensor for monitoring the amount (degree) of captured pollution, which prevents an increase in the reliability of water treatment and a decrease in the volume of water when removing floated (floated) contaminants.

The aim of the invention is the creation of an installation for flotation treatment of water with the highest efficiency and reliability of treatment.

This goal is achieved due to the fact that in the installation for flotation water purification, containing a rectangular casing, divided into communicating chambers by paired parallel partitions, a device for recycling purified water, as well as devices for removing floated (floated) contaminants are placed in each chamber, while devices for removing flotted contaminants are couplings screwed onto the external threads of pipe bends from sludge collection pipes with the possibility of moving the couplings along the screw threads x or down, and the chambers are installed in two series-connected rows, their plan areas increase in the direction of the water flow in the installation, the number of ejectors in the second row is greater than in the first. In addition, the installation is equipped with a sensor for monitoring the amount (degree) of contamination, electrically connected to a controller that controls the operation of the valve electric actuator installed on the unit for outputting water from the installation.

This technical solution of the goal provides the creation of a flotation unit with the highest efficiency and reliability in water treatment.

Analysis of analogues showed that the proposed technical solution is new. The novelty of the solution lies in the fact that water-air ejectors of a device for recycling purified water, as well as a device for removing pop-up (trapped) contaminants, are placed in each chamber, the chambers are installed in two series-connected rows, and their plan areas increase in the direction of the water flow in the installation , the number of ejectors in the second row is greater than in the first. In addition, the installation is equipped with a sensor for monitoring the amount (degree) of contamination, connected to a controller that controls the operation of the valve electric drive installed on the unit for water outlet from the installation. The emergence of contaminated contamination is controlled by couplings screwed onto the external threads of the pipes with the possibility of moving up or down the thread.

Thus, the claimed technical solution is characterized by a new set of essential features that give a positive effect, and has signs of compliance with the criterion of "inventive step".

Figure 1, 2 and 3 shows the installation for flotation water treatment. In Fig.1 is a frontal projection (in section along aa), in Fig.2 is a top view; figure 3 is a section along BB.

The installation comprises a housing 1, a pipe for supplying purified water 2, a front partition 3 and paired partitions 4 forming communicating chambers 5, water-air ejectors 6 (installed in each chamber), couplings 7 screwed onto the external threads of pipe branches 8. Paired parallel partitions 4 form slotted channels 9, a channel 10 is formed between the housing 1 and the front partition 3. The installation also includes a pump 11 supplying water to the ejectors 6, a sensor 12 for controlling the amount (degree) of contaminants, a controller 13; a water outlet unit 14 with a valve 15 equipped with an electric actuator and a valve 16. The combs 17 and the collectors 18 are intended for distribution and supply of purified water to the ejectors 6. The combs 17, the collectors 18 and the ejectors 6 form a device for recirculated purified water. The installation also contains sludge collection pipes 19 and a pipe 20 for removing sediment entering through the pipes 21, valves 22, the channel 23 connects the first row of chambers to the second row. The whole installation is located on the floor of the room on the racks 24. The valve 16, the comb 17, the manifold 18, pipes 19, 20, pipes 21, valves 22 and racks 24 are not included in the subject of the invention.

Installation works as follows. The purified water enters through the pipe 2 into the channel 10, formed between the front partition 3 and the housing 1. Rising up the channel 10, at the outlet of it, water is aerated (saturated with air) using a water-air ejector 6. Recirculation of purified water is carried out by taking this water pump 11 from the last chamber 5 along the water, and then pump 11 delivers this water to the combs 17, of which water through the collectors 18 enters the air-air ejectors 6, providing aeration of the water. Next, aerated purified water moves through chambers 5, communicating with each other through slotted channels 9. Contaminants trapped by flotation float on the surface of chamber 5, formed between partition 3 and paired partitions 4. Then, before each chamber 5, purified water enters channel 9 between steam by partitions 4, they are aerated by ejectors 6 and fall into the next chamber, where trapped contaminants float to the surface of the water. Thus, the purified water passes sequentially through both rows of chambers 5. Moreover, in the chambers of the second row, the water entering the second row through the channel 23 is aerated by a large number of ejectors 6, which increases the cleaning efficiency. In addition, the cleaning efficiency is increased by improving the sedimentation of the surfaced (trapped) contaminants, since the area of the chambers 5 (in plan) increases along the course of the water. The cleaning efficiency is also increased by reducing the amount of water removed along with contaminants. The process of removing contaminants caught on the water surface is not carried out continuously in the installation, but only when the pollution control sensor 12 sends a signal about the accumulation of emerging contaminants to controller 13, which, in turn, will send a signal to close valve 15 to the electric drive of this valve. High reliability of the installation is ensured by the presence of a pollution control sensor. Parallel to the valve 15, an open valve 16 with a manual actuator is installed on the water outlet 14, and when the valve 15 is closed, the hydraulic resistance of the water outlet 14 increases and the water level in the chambers 5 rises. A device for removing pop-up contaminants in each chamber consists of couplings 7 screwed onto the threaded parts of pipe bends 8 from sludge collection pipes 19. The couplings are adjusted so that the contaminants do not drain through the upper edge of the coupling 7 from chambers 5 only when the valve 15 of the water outlet 14 assembly is closed. from the installation. After the contamination layer is removed, the sensor 12 instructs the controller 13 to open the valve 15 through the controller 13 and the installation switches back to the accumulation of contaminants. Water-air ejectors 6 are powered from a pump 11, which supplies purified water through a comb 17 and collectors 18. The emergence of contaminants is removed through sludge collection pipes 19 and pipe 20. The sediment is removed through a pipe 21 and a valve 22.

The proposed installation for flotation water treatment is industrially applicable, since it does not contain elements that are not manufactured by industry. The contaminant quantity sensor can be made in accordance with the design given in the book by V. A. Permyakov, E. S. Levin and others. “Viscous Fluid Heat Exchangers”, L., Energoizdat, 1983. It is most preferable to use ejectors with water ejectors with elongated mixing chamber, the design of which is given in the book of B.F. Lyamaev "Hydro-jet pumps and installations", L., Mechanical Engineering, 1988.

The proposed installation according to the principle of action, due to the new set of essential features, allows flotation treatment of water with high efficiency and reliability.

Claims (1)

Installation for flotation water treatment, containing a rectangular casing, divided into communicating chambers by paired parallel partitions, a device for recycling purified water, consisting of a pump and an ejector, as well as water inlet and outlet units and a device for removing floated (floated) contaminants, characterized in that water-air ejectors of the purified water recirculation device, as well as devices for removing floated (floated) contaminants, are placed in each chamber and are couplings, wound they can be moved on the external threads of the pipes with the possibility of moving them up or down along the thread, and the chambers are installed in two successively connected rows, their plan areas increase in the direction of the water flow in the installation, the number of ejectors in the second row is larger than in the first, in addition, the installation is equipped with a sensor for monitoring the amount (degree) of contamination, electrically connected to a controller that controls the operation of the valve electric drive installed on the unit for water outlet from the installation.

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