SU912656A1 - Apparatus for purifying effluents - Google Patents

Description

(54) DEVICE FOR CLEANING OF WASTE WATER

The invention relates to devices for the treatment of industrial wastewater and can be used in various areas of national economy, where, according to the conditions of the technological process, it is possible to reuse purified water or to discharge it into the opening of water bodies. Wastewater treatment devices are known, including a mixer with a propeller agitator, a floc formation chamber and a sump tH. In the known devices, it is not possible to achieve a good effect of wastewater treatment containing emulsified oil products, since a significant portion of the flocculation floats on the surface of the water and does not settle in sump for a long time. In addition, the presence of electrical agitators in a mixture of body and flocculation chamber causes electricity consumption and reduces the efficiency of the device. A wastewater treatment device is also known, comprising a mixing chamber with an intake pipe and a swirler placed in the upper and lower parts, a settling chamber connected to the mixing chamber and a flocculation chamber installed in the settling chamber with a swirler and quencher of water flow rate G2. However, the location of the spillway prevents the rotational movement of the effluent in the area of the intake manifold, the formation of a water funnel with an air cone, the separation of the latter, the capture and mixing of the wastewater and, as a consequence, does not create air in the form of small bubbles near the surface of the flocking chamber . The purpose of the invention is to increase the efficiency of the cleaning process.

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In the wastewater treatment device, which contains a mixing chamber with a suction inlet located in its upper part and a swirler located in its lower part, a settling chamber connected to the mixing chamber and a flocculation chamber installed in it in the settling chamber with a swirler and flow rate damper, the intake the nozzle is equipped with a conical funnel and is connected to the swirler of the float-forming chamber.

In addition, it is provided with a scraper mechanism for removing foam located above the flocculation chamber.

FIG. 1 shows the proposed device, a general view, a longitudinal section; in fig. 2 is a view A in FIG. in fig. 3 - node I in figure 1.

The device is a prefabricated structure, in the mixing chamber 1 of which, made, for example, in the form of a cylinder with a conical bottom, is placed in the lower part of the swirler 2, and in the upper part - intake pipe 3, equipped with a conical funnel k. Intake manifold 3 is connected by pipeline 5 with a swirler 6, made in the form of a Segner wheel with nozzles at two ends. The swirler 6 is located in the float-forming chamber 7, provided with a water flow rate quencher 8 in the lower part. A scraper mechanism 9 and a tray .10 for removing foam are installed above the flocculation chamber 7. Chamber 7 flocculation placed in the settling chamber 11.

The device works as follows.

Purified wastewater and the reagent is fed through pipelines into the mixing chamber 1 through a swirler 2, which provides a high initial velocity of the mixture and its turbulization. The water-coagulant mixture is removed from the mixing chamber 1 through the intake manifold 3 with a conical funnel A. In the area of the funnel, due to the rotational movement of the liquid, an air cone forms, which is trapped and agitated by the flow, rushing through the pipeline into the swirl 6. At the exit of the latter, air is released in the form of small bubbles near the surface of the water chamber 7

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flocculation. The funnel k is located at a depth that provides air subsidence, and the immersion depth of the swirler 6 and the hydrostatic displacement of the water levels in the mixing chamber 1 and the flocculation chamber 7 are selected based on the conditions for ensuring the turbulent rotational movement of the surface layer in the flocculation chamber.

Air bubbles float the particles in the water being treated with emulsified oil and small flakes that float to form

5 on the surface of the water chamber 7 foam layer. In addition, the exit at considerable speed from the nozzles swirl 6, the water acquires a rotational movement along the periphery of the chamber 7

The flocculation resulting in uniform mixing creates favorable conditions for the formation of flakes.

At the exit of the GOD from the chamber 7 into the settling chamber 11, the rotation of the flow can lead to the destruction of the flakes, therefore, in the lower part of the chamber 7 a damper 8 is installed. Coarse mechanical impurities and flakes

0 is deposited at the bottom of the settling vessel,: measures 11, from where it is periodically diverted for further processing. Foam floating to the surface of the chamber. This is done by means of a scraper mechanism 9 into tray 10 and from there to decantation. From the settling chamber 11, the treated water can be discharged into the sewer system or reused.

 The proposed device removes coarse and emulsified contaminants from water, increases the efficiency of the cleaning process by using the flotation effect.

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Claims (1)

1. Device for wastewater treatment, including a mixing chamber 0 with an inlet duct located in its upper part and a swirler located in its lower part, a settling chamber connected to the mixing chamber and a flocculation chamber placed in the settling chamber with a swirler and flow rate damper installed in it, characterized in that. In order to increase the efficiency of the cleaning process, the intake port is equipped with a conical funnel and is connected to the swirler of the flocculation chamber. 2 The device according to claim 1, in which, in order to ensure that the foam is removed from the surface of the water in the flocculation chamber, it is provided with a scraper mechanism located above the 9-6 flocurization chamber to remove the foam. Sources of information taken into account during the examination 1. Kl mko 8.A., Apelpin IO Purification of natural waters. Publisher of literature on construction. M., 1 JAPAN YY 1 6-14398. cl. 91 p. 9. 01.17.71. -fl.f