RU38634U1 - LIGHTER - Google Patents

Abstract

1. A clarifier comprising a cylindrical body with a conical bottom, a cylindrical shell with a conical bottom coaxially located in the body, pipelines for supplying initial water for clarification and supplying reagents, for removing clarified water and sediment, thin-layer elements located in the upper part of the body, an annular tray, located above the thin-layer elements and connected to the clarified water discharge pipe, an ejector mounted along the vertical axis of the housing and consisting of an inlet chamber, a mixing chamber and a diffuser, and a precipitator with a conical bottom, a perforated collector located in its upper part, and a system of pipelines for supplying sediment to the inlet chamber of the ejector, characterized in that the enclosing cylindrical shell contains two chambers, the upper of which is an air separator, connected to the supply pipe of the original water for clarification and is equipped with a system of elements for uniform allocation of air from the source water and a downward flow of degassed water, equipped with a nozzle made in the form of floor and located in the inlet chamber of the ejector, and in the lower chamber there is a precipitator equipped with bypass devices, the perforated collector of the precipitator is equipped with a clarified water pipeline with shut-off and control valves connected to an annular tray made closed and equipped with a clarified water collection system consisting of perforated the lower part of the radially arranged tubes, the ejector is located below the precipitator, the diffuser is down, its inlet chamber is equipped with at least two

Description

Technical field

The utility model relates to the field of purification and clarification of water systems using chemical reagents and can be used in the construction of new and reconstruction of existing treatment facilities for natural, circulating and waste water in industry, municipal and agriculture, in particular, in pre-treatment systems of water treatment plants of the heating network, water treatment for boiler houses, desalination plants, as well as in circulating water treatment systems of closed circulating systems.

State of the art

Known water clarifier with an air separator, made in the form of a vertical sump containing a cylindrical body with a conical bottom, equipped with pipelines for supplying source water for purification, removal of purified water, supply of chemical reagents and removal of sludge. An air separator having a nozzle device for supplying source water in a mixture with a coagulant is further provided with a circulation chamber. The nozzle device is made in the form of an ejector, partially placed inside the circulation chamber. A horizontal grill is installed in the lower part of the air separator; above it in the suction zone of the ejector there is a coagulant supply pipe. Inside the circulation chamber in the area of the initial section of the ejector exhaust, a pipe for supplying aerated compressed air is installed. In the upper part of the casing, a louvre separator (thin-layer modules) and a distribution-assembly system with a clarified water drainage pipe are installed. / Patent RU No. 2130431, C 02 F 1/52; 01 D 21/08, 1999 /.

The disadvantages of this device are its low efficiency and low degree of water purification, which narrows the scope of use of purified water, in particular for those industries where a certain quality of treated water is required by the content of suspended solids, iron and organic compounds. The instability of the quality of clarified water leads to the formation of carbonate deposits in pipelines, which makes it difficult to operate, for example, such plants as desalination plants and heating network recharge plants. In addition, the complexity of the operation of the node for supplying dispersed air and the process of its removal from the source water before it enters the clarification zone leads to a decrease in the degree of water purification.

The closest in technical essence to the proposed one is a clarifier, including a housing with a conical bottom and a guarding shell installed concentrically relative to the vertical axis, a sediment sealant made in the form of an annular tank with a conical bottom, an ejector and pipelines for supplying raw water and for removing purified water, chemical reagents and sludge disposal. A perforated collector is installed in the upper part of the precipitator, communicating with the suction zone of the ejector, the mixing chamber of which is installed between the conical bottom of the body and the cavity of the trapezoidal profile formed by the outer surface of the sediment bottom and the lower end surface of the enclosing shell. In the upper part of the clarifier there is a thin-layer separator and an annular collecting tray connected to the clarified water pipeline. / Patent RU No. 2122461, B 01 D 21/02; C 02 F 1 / 00.1998 y. /.

The disadvantages of the known devices are also low productivity and insufficiently high degree of purification of water from impurities. Absence in

sediment compactor of a known device of an adjustable system for collecting and discharging clarified water leads to a decrease in the coefficient of its volumetric use and an increase in water consumption for the clarifier’s own needs, as well as an increase in the volume of structures for compaction and dewatering of sediments.

Utility Model Essence

The task to which the proposed utility model is directed is to create a device for clarifying water systems, which can be used in the construction of new ones, including for the reconstruction and modernization of existing clarifiers with a layer of suspended sediment at minimal cost.

The technical result consists in increasing the efficiency of purification and clarification of water while increasing the productivity of the device.

The problem is solved, and the technical result is achieved due to the fact that in the clarifier containing a cylindrical body with a conical bottom, a cylindrical shell with a conical bottom coaxially located in the body, pipelines for supplying raw water for clarification and supplying reagents, for removing clarified water and sediment, thin-layer elements located in the upper part of the body, an annular tray located above the thin-layer elements and connected to the clarified water discharge pipe, ejector, mouth mounted along the vertical axis of the casing and consisting of an inlet chamber, a mixing chamber and a diffuser, and a sediment compactor with a conical bottom, a perforated collector located in its upper part, and a system of pipelines for supplying sediment to the ejector inlet chamber, the enclosing cylindrical shell contains two chambers, the upper of of which - an air separator, is connected to the pipeline for supplying the source water for clarification and is equipped with a system of elements for uniform extraction from

air source water and a degassed water downflow pipe equipped with a nozzle made in the form of a nozzle and located in the inlet chamber of the ejector, and in the lower chamber there is a precipitator equipped with bypass devices, a perforated precipitator collector is equipped with a clarified water pipeline with shut-off and control valves connected to the annular a tray made closed and equipped with a system for collecting clarified water, consisting of perforated at the bottom of the radially arranged pipes ok, the ejector is located below the precipitator with the diffuser down, its inlet chamber is provided with at least two windows, and the reagent supply pipe is connected to the inlet chamber of the ejector, while the clarifier can be equipped with additional thin-layer elements located below the bypass devices of the precipitator. It is preferable that the inlet chamber of the ejector is equipped with eight windows, four of which have pipelines for supplying sediment from the precipitator, and one or more pipelines for supplying reagents.

The essence of the utility model is illustrated by the drawing, which shows a vertical section of the clarifier.

For greater clarity, the size ratio between the individual elements of the clarifier is changed.

The clarifier contains a cylindrical body 1 with a conical bottom 2, a cylindrical shell surrounding the shell 3 with a conical bottom coaxially located in the body, pipelines for supplying raw water for clarification 4 and supplying reagents 5, for removing clarified water 6 and sediment 7, thin-layer elements 8 located in the upper part case 1, an annular tray 9, located above the thin-layer elements 8 and connected to the clarified water discharge pipe 6, precipitator 10 with a conical bottom and a perforated collector 11,

located in its upper part, and an ejector 12 mounted on the vertical axis of the housing 1 and consisting of an inlet chamber 13, a mixing chamber 14 and a diffuser 15, the enclosing cylindrical shell 3 contains two chambers, the upper of which is an air separator 16, connected to the supply pipe water for clarification 4 and is equipped with a system of elements for uniformly extracting air 17 from the source water and a downflow pipe of degassed water 18, equipped with a nozzle 19 made in the form of a nozzle and located in the inlet chamber 13 of the ejection RA 12, in the lower chamber of the enclosing cylindrical shell 3 there is a precipitator 10, equipped with bypass devices 20, which can be made in the form of windows or sediment transfer caps, and a system of pipelines for supplying sediment 21 to the ejector 12, the perforated collector 11 of the precipitator 10 is equipped with a clarified water pipeline 22 with shut-off and control valves 23 connected to the annular chute 9, the ejector 12 is located below the precipitator 10 with the diffuser 15 down, its inlet chamber 13 is provided with at least two windows 24 (preferably eight), the annular tray 9 is closed and provided with a clarified water collection system consisting of perforated at the bottom of the radially arranged tubes 25, and the reagent supply pipe 5 is connected to the inlet chamber 13 of the ejector 12. The clarifier is equipped with additional thin-layer elements 26 located below the bypass devices 20 precipitator 10. The pipeline supply of source water for clarification 4 is provided with a supply pipe of coagulant 27. The conical bottom of the precipitator 10 is equipped with a pipeline om 28.

Information confirming the possibility of implementing a utility model.

Clarifier works as follows.

The source water through the water supply pipe for clarification 4 mixed with the coagulant supplied through the coagulant supply pipe 27, is fed into

an air separator 16, in which the source water, passing through the system of elements for uniform air separation from the source water 17, is released from the air and enters the downward pipe of degassed water 18 and through the nozzle 19, made in the form of a nozzle, enters the inlet chamber 13 of the ejector 12. The inlet chamber 13 of the ejector 12 is provided with windows 24 through which the recirculated slurry is formed, which is formed in the lower part of the housing 1 and in the precipitation compactor 10. The precipitate from the precipitator 10 is fed through the feed pipe system adka 21. The mixing chamber 13 of the ejector 12 through line feed reactants 5 also serves lime and / or flocculant and / or other reagents. After mixing all the incoming flows, the mixture through the diffuser 15 enters the lower part of the housing 1, rises up and passes through additional thin-layer elements 26, where the process of flocculation takes place. The enclosed space of thin-layer elements 26 increases the likelihood of a collision of the suspension particles destabilized by the coagulant contained in the source water, their adhesion to each other and the formation of flakes with high hydraulic fineness. Heavy flakes under the influence of gravity are lowered into the lower part of the housing 1 and partially returned to the inlet chamber 13 of the ejector 12 for mixing, and the rest of the heavy flakes precipitate, compacts and is removed from the clarifier via the drainage pipe 7. A lighter suspension, under the action of the oncoming flow of the treated water, returns to the thin-layer elements 26, being an adhesive-active medium, becomes centers of flocculation for new portions of the initial water supplied to the treatment. Part of the suspension from the zone of the suspended layer formed above the additional thin-layer elements 26, through the bypass device 20 enters the precipitation seal 10. The amount of suspension supplied to the precipitation seal is regulated using shut-off and control valves (valves) installed on the clarified water pipeline

22 connected to the annular chute 9. The remaining part of the clarified water containing a suspension with a low hydraulic fineness rises up and enters the thin-layer elements 8, in which the process of sedimentation of the suspension remaining in the clarified water in layers of small height (5-10 cm) at stable, close to laminar, water movement. The clarified water is collected through radially located perforated in the lower part of the tube 25 of the clarified water collection system and through the closed transport ring tray 9, it is discharged from the clarifier through the clarified water discharge pipe 6 (discharged to the consumer). The conveying ring tray 9 is closed to prevent the natural aeration of clarified water, thereby increasing its stability. The sediment accumulated in the lower part of the conical bottom of the sediment compactor 10 is discharged through the discharge pipe 28.

The process of clarification of the source water is most stable when there are eight windows in the inlet chamber of the ejector, four of which supply sediment through a piping system to supply sediment 21, and reagents are dosed into one or more windows.

Industrial applicability.

The device is simple and reliable in operation, has a low power consumption and can be performed both in new construction and in the reconstruction of facilities in operation.

The proposed utility model is a compact device for clarification of treated water using reagents.

Claims (3)

1. A clarifier comprising a cylindrical body with a conical bottom, a cylindrical shell with a conical bottom coaxially located in the body, pipelines for supplying initial water for clarification and supplying reagents, for removing clarified water and sediment, thin-layer elements located in the upper part of the body, an annular tray, located above the thin-layer elements and connected to the clarified water discharge pipe, an ejector mounted along the vertical axis of the housing and consisting of an inlet chamber, a mixing chamber and a diffuser, and a precipitator with a conical bottom, a perforated collector located in its upper part, and a system of pipelines for supplying sediment to the inlet chamber of the ejector, characterized in that the enclosing cylindrical shell contains two chambers, the upper of which is an air separator, connected to the supply pipe of the original water for clarification and is equipped with a system of elements for uniform allocation of air from the source water and a downward flow of degassed water, equipped with a nozzle made in the form of floor and located in the inlet chamber of the ejector, and in the lower chamber there is a precipitator equipped with bypass devices, the perforated collector of the precipitator is equipped with a clarified water pipeline with shut-off and control valves connected to an annular tray made closed and equipped with a clarified water collection system consisting of perforated the lower part of the radially arranged tubes, the ejector is located below the precipitator, the diffuser is down, its inlet chamber is equipped with at least two I have windows, and the reagent supply pipe is connected to the inlet chamber of the ejector. 2. The clarifier according to claim 1, characterized in that it is equipped with additional thin-layer elements located below the bypass devices precipitation compactor. 3. The clarifier according to claim 1 or 2, characterized in that the inlet chamber of the ejector is equipped with eight windows, four of which have pipelines for supplying sediment from the precipitator, and one or more pipelines for supplying reagents.