SU941307A1 - Apparatus for clarifying water containing suspended precipitate layer - Google Patents

Description

one

The invention relates to devices for clarifying natural and waste waters from impurities and can be used in water supply and water treatment.

A clarifier is known, comprising a housing, an air separator, distribution pipes with nozzles, a flocculation chamber, inlet and outlet connections for the treated water 1.

The disadvantage of it is poorly effective clarification, since the reagent in it is in a coarse fractional state, and the removal of air when self-clarified WATER leads to flotation of the reagent, its removal from the clarifier, which leads to its overexpenditure, increasing the time of the clarification process, the duration of air separation and reduced productivity of the device.

Closest to the proposed technical essence and the achieved result is a device containing an air separator, a jigger, reagent inlet, air supply and water inlet nozzles 2.

The disadvantages of the known device are quite complex installation design, forced air supply dp; removal of carbon dioxide and, as a consequence, a large saturation of water with air, which leads to flotation of the reagent, its discharge from the clarifier and its waste, increased time of the clarification process, low separation and mixing of the reagent and, as a result, insufficient clarification.

The purpose of the invention is to increase the efficiency of the clarification and productivity of the device, and to reduce the consumption of reagent.

Claims (2)

This goal is achieved by the fact that a device for clarifying water with a suspended sediment layer, comprising a housing, an air separator, pipelines for inlet and outlet of treated water, is equipped with a stepped vacuum head with a baffle plate placed in the air separator on the water inlet pipe and a exhaust device located in the upper part of the air separator, with the vacuum head stages made of variable cross-section and different lengths. 394 Eighth fig. 1 shows the proposed device, a longitudinal section, the total type; in fig. 2 - longitudinal vacuum head The device comprises a housing 1, in which the sediment coil 2 with sediment receiving ports 3 is coaxially located. There is a built-in air separator 4 located in the periphery of the housing 1, which in its lower part passes into the inlet pipe 5, on which code there is a perforated ring distribution pipe 6, and in the upper exhaust device 7. Patches 8 are provided on the water inlet pipe 9 for injecting reagent into the treated water, and pipe 10 for discharging the treated water. ka is patru-. side 11. The step vacuum head 12 consists of a confuser 13, at the end of which there are cylindrical nozzles 14-17 with diameters of variable cross section and different LL), as well as a reflection plate 18, which prevents secondary saturation with treated air. The device works in the following way. The reagent-treated water is piped through pipe 9 to vacuum head 12 with a baffle plate 18 at the end. Driving from the stream enters the confuser P, at the exit from which it acquires a great speed. Passage of the schischpryku nozzle 14, jet svil; the movement forms an annular vacuum zone 19, in the jet of low pressure there is a dryer atmospheric pressure and volumetric boiling up of the gases in the water occurs. The formation of gas bubbles in the jet and their release into the annular vacuum zone 19 destroys the inconsistency of the jet, and since -ES occurs instantaneously, the fragmentation of the reagent to the microstructure and its intensive mixing occur simultaneously. Similar processes are occurring in all after shchiadrich nozzles 15-17. From the last nozzle 17, a water-air mixture is released, in which the reagent is dismembered, to a microstructure with a uniform distribution throughout everything else, and the gases released in the air bubbles. The water-air mixture leaving the nozzle 17 enters the reflecting plate 18, striking it is crushed into flying droplets, and the leaking gases change the direction of movement and are sucked out by exhausting device 7 into the atmosphere by means of a vent that forms in the upper part of the air separator 4. Through the inlet pipe 5 through the non-perforated annular distribution pipe 6, water enters the housing 1, where there is an intense inclination due to the large contact area of the reagent with the treated water, since the reagent t is in the finely divided state and uniformly distributed throughout obemu treated water. In the upward upward movement of the flow from the bottom up, the flakes are further enlarged and retained in the sediment layer, after which the purified water is collected in collecting chutes. The sediment flows through sediment receiving ports 3 into precipitator 2, where it is compacted and removed through pipe I. The invention improves clarification efficiency, reduces reagent consumption, increases productivity and speeds up the air release process due to intensive fragmentation of the reagent and rapid air removal from clarified water. The annual economic efficiency of the device with a productivity of 250 is 100 thousand rubles. Apparatus of the invention for clarifying water with a sediment layer, comprising a housing, an air separator, input and output pipelines of the treated water, characterized in that, in order to increase the efficiency of the lighter and the performance, to reduce the consumption of the reagent, it is equipped with a stepped vacuum head with a baffle plate that accommodates in the air separator on the water inlet pipeline and exhaust device located in the upper part of the air separator, the steps of the vacuum head being made foot section and different lengths. Sources of information taken into account in the examination 1.Livnshts O.V. Spravoshik on water treatment of boiler plants, M., Energie, 1976, p. 180. 2. Kurgaev EF. Water clarifiers, M., Stroyizdat, 1977, p. 119--120. eff. f