SU1303556A1 - Device for treatment of waste water - Google Patents

Abstract

The invention relates to devices dp of wastewater treatment, containing fats and protein compounds, by physico-chemical methods. It can be used in the food and related industries and, in doing so, makes it possible to increase the efficiency of the cleaning process while reducing its cost. The device comprises a housing 1 with settling chambers 3 and flotation cells 4. Outside the hull float formation 6 and thin layer settling 7 are located coaxially. The coagulum is supplied by a rotating dispenser 21. To increase the efficiency of mixing the coagulum with water, the flocculating chamber is equipped with rod agitators 26. removal of the foam product are intended scrapers 27, mounted on the distribution pipe coagulum 25. 1 CW f-ly., 2 ill. S (L and W O Slas Sl ot 05

Description

one

The invention relates to combined wastewater treatment plants by physicochemical methods, namely, settling, flotation and coagulation methods, and can be applied to the treatment of food industry wastewater, mainly wastewater from combines containing fats and protein compounds.

The purpose of the invention is to increase the cleaning efficiency.

Figure 1 presents the proposed device, the cut; fig 2 is the same, top view.

The device contains a cylinder-conical case 1 with a peripheral tray 2, one above each other settling chamber 3, a flotation chamber 4 with windows 5, coaxially outside the case 1 a cylindrical chamber and a cylinder-conical partition with the formation of flocculation chambers 6 and thin-layer settling 7 separated by a semi-submersible partition 8 , pipes 9, 10, 11 and 12 of the gadfly of purified water, sediment, coagulated suspension, foam product

The sedimentation chamber 3 has a pipe 13 supplying the purified water, a cap 14 with a baffle 15 for distributing the flow over the cross section of the apparatus. The flotation chamber 4 has a reactive distributor 16 with slits 17 of a gas-liquid solution supplied via pipeline 18, a sump box 19.

Above the installation, along its axis, there is a coagulum solution supply pipeline 20, the outflow apertures of which are located above the chilling chamber 6, the rotating coagulum dispenser 21 of cyclical operation.

This consists of a receiving tank 22 with a drain pipe 23 and a cap 24 mounted coaxially to it.

To the drain pipe 23 is attached horizontal distribution

45 are turned when the flow is turned under the floor by the submersible partition 8, additionally settling in the inclined channels of the thin layer settling chamber 7. Coagulated suspension along

The conduit 25 with rod agitators 26 attached to it and the scraper tubes 11 is diverted to a further 27. treatment. Purified water is removed.

The device works as follows.

The treated wastewater through the nozzle 13 is fed into the sedimentation chamber 3 under the cap 14, radially distributed by a baffle 15. When the flow is turned

upwardly, coarse impurities are removed from it, which are removed through pipe 10. Pipeline 18, through jet distributor 16, into the flotation zone 4 is supplied a gas-liquid solution, from which gas microbloods are released, the pollution flotation. The foam product accumulated on the surface is dumped by scrapers 27 into the sump 19, directed it through the pipe 12 to the outside of the installation.

Partially purified water after the passage of the flotation chamber 4 through the windows 5 enters the chamber 6 of the flocculation. The pipeline 20 continuously supplies the coagulum solution to the receiving tank 22 of the rotating dispenser 21. After filling the receiving tank 22 to the top of the drain pipe 23, the coagulum solution begins to flow out of it, displacing and drawing air from under the cap 24, after which it is filled the liquid and the dispenser 21 are flushed. The coagulum solution is drained through the drain pipe 23 into the horizontal distribution pipe 25 into the flocculation chamber until the level drops in the receiving tank 22 to the bottom of the cap 24. This causes the stream to break, and the drain cycle stops. Then

the liquid in the receiving tank begins to increase, the described cycle of operation of the dispenser 21 is repeated. The portions of the coagulum solution are evenly distributed and mixed in the volume of the mixing-flooding chamber with rod agitators 26 attached to the end parts of the horizontal pipeline 25. The coagulated substances are intensively released when the flow turns under the semi-submersible partition 8, additionally settling in the inclined channels of the chamber thin layer settling 7. Coagulated suspension through the pipes 11 is removed for further processing. Purified water is removed.

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peripheral tray 2 and discharged through pipe 9 outside the device.

The equipment of the device with peripheral flocculation and thin-layer settling chambers with a rotating coagulum batch of cyclic action allows organizing the treatment of waste water in the fractionated coagulation mode with addition of the calculated amount of coagulum in successive portions, which intensifies the coagulation process while economizing the coagulation and allowing it to allow for coagulation while allowing the coagulum to be saved and allowing for the coagulation process, and allowing for coagulation during the saving of coagulation and allowing it to allow for coagulation while allowing coagulation to be saved and allowing for coagulation during the coagulation economy and allowing for coagulation while allowing coagulation to save coagulation. reduce the cost of cleaning.

Claims (2)

1. A device for sewage treatment, containing a cylindrical housing, a cylindrical chamber, a tsr1In-15 droconic septum, feed water supply units and purified water outlet, a flotation agent distributor, scrubbers for removing the froth product, distinguished by 20 13 21 yy that, in order to increase cleaning efficiency, a cylindrical chamber and a cylindrical partition are installed coaxially outside the housing with the formation of a flocculation chamber and a thin-layer sedimentation chamber, respectively, the device is equipped with a coagulum dispenser mounted on the axis along its axis with a horizontal distribution pipe, exhaust outlets which are located above the flocculation chamber. equipped with rod agitators. 2. A device according to claim 1, characterized in that the scrapers for removing the froth product and the agitator are fixed on the distribution pipe. 12 Editor T. Mitejko tpuf.Z Compiled by T. Ledneva Tehred A. Kravchuk T273 / 26 Circulation 852Subscribe VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4 Proofreader M. Demchik