SU861326A1 - Device for waste water purification - Google Patents

Description

(54) DEVICE FOR CLEANING WASTE EQUIPMENT

one

The invention relates to wastewater treatment plants and can be used to treat electroplating, wastewater enterprises of non-ferrous metallurgy, especially when used as a coagulation of iron hydroxide.

A device is known which contains a reaction chamber and a thin-layer settler tl

A disadvantage of the known device is the need to use additional filtering systems.

It is also known a sewage treatment unit, comprising a horizontal rectangular case with far-bottom peaks, located in a partition wall, dividing its reaction, flocculation, settling filtration chambers, inclined sedimentary plates located in the settling chamber, filtering element placed in the filtration chamber, and inlets and outlets for polluted and purified water and reagents GH

A disadvantage of the known device is the low quality of cleaning

neutralization of heavy metal ions.

In order to intensify the purification process by improving flocculation and recycling of the coagulant, the device is equipped with a horizontal cylindrical body installed in the upper part of the body in the flocculation chamber and connected to the reaction chamber.

The shell with an outlet and blades fixed on its inner surface, two inclined symmetrically located sockets with a branch pipe, would have a raster 5 with an output cylindrical shell, a rotary reflective reheat, a raamentin and the lower ends of the precipitated plates, and a pipe, and a pipeline, a pipe, and a pipeline, a pipe, and a pipe. with a reactive cannon. Moreover, the device is equipped with a hinged device with a device that is made in the form of an axially mounted cylindrical shell of the shaft and fixed to it 25 pastes.

Figure 1 shows the device, a longitudinal section; Ia figure 2 - section aa in figure 1; Ia fig.Z - sockets, common c) {D

The wastewater treatment unit comprises a horizontal body 1, with a pyramidal bottom 2, housed in a partition wall, dividing it into a reaction chamber. 3, flocculation chamber 4, settling chamber 5 and filtration chamber b. In the settling chamber 5, inclined precipitation plates 7 are placed. In the filtration chamber 6 there is a filtering element 8, made, for example, and in the form of granules of expanding, polystyrene. A nozzle 9 serves to enter the polluted water. Purified water is removed from the device through nozzle 10. A horizontal cylindrical shell 11 is installed in the upper part of the housing 1 in the flocculation chamber 4 with an outlet 12 and blades 13 fixed to the inner surface of the cylindrical shell 11. The outlet 12 of the cylindrical shell 11 is connected by a nozzle 14 with two inclined symmetrically spaced sockets 15. At the lower ends of the collecting plates 7 a pivoting reflector partition 16 is installed, with by which conditions can be regulated. settling the suspension in the Sludge chamber 5. To improve flocculation along the axis of the cylindrical shell 11, a shaft 17 is installed with blades 18 mounted on it, driven by rotation of the actuator 19. Coagulum, such as iron hydroxide, as well as reagents for adjusting the pH of the treated water is introduced into the reaction chamber 3 through the nozzle 20. For mixing reagents and coagulant with water, for example, a mixing device 21 is used. A nozzle 22 is used to inject flocculus into the flocculation chamber 4. Pyramidal bottoms 2 is connected to the reaction chamber by a pipe 23 intended to recirculate coagulant and formed during the disposal of waste effluents into the reaction chamber 3. The treated water is fed through the pipe 23 to the reaction X1 through the pipe 9. The reaction chamber 3 has a reagent for adjusting the acidity processed water and coagulum nt. The stirring device 21 is turned on. From the reaction chamber 3, water enters the cylindrical shell, into which flocculating nt is fed through pipe 22. The flocculus is mixed with water using blades 13 and blades 18 fixed to shaft 17 driven by rotation of drive 19. In a cylindrical (shell, the water performs a helical motion optimal for flocculation. The flocculated water leaves the cylindrical shell in nozzle 14 and has a narrow transitional

cross section, due to which flocculated flakes receive a large kinetic energy. After the nozzle 14, the water with flakes enters the inclined sockets 15. At the same time, the water speed decreases, but flocculated flakes, especially the largest, continue to move downward at an elevated speed and enter the lower part of the pyramidal bottom 2, from where they return to pipeline 23 reaction chamber 3. Due to the accelerated movement of the large flakes at the lower ends of the collecting plates 7, optimal conditions are created for the small flakes deposited on the plates 7 to be sucked in and the flakes are returned to the recirculation tion. After passing the collecting plates 7, the water enters the filtration chamber b, from where it is discharged through duct 10. As excess sludge accumulates, it is discharged through duct 24.

The proposed device has the following technical and economic advantages:

flocculation is improved due to the optical conditions of the rotational screw flocculation;

conditions for the deposition of small flakes due to their suction in the vacuum of the vacuum created by the accelerated movement of large flakes;

purification quality is improved by improving the recirculation of coagulant and hydroxides, which is formed in the process of water disposal, the recirculation of coagulant and hydroxides promotes the intensification of soil sorption; cleaning automation is simplified, since a large mass of recycled coagulum stabilizes the reaction conditions.

Claims (1)

1. A wastewater treatment device containing a horizontal rectangular case with a pyramidal bottom, placed in a reblocking case, dividing it into reactionary, flocculation, settling and filtration chambers, inclined settling plates located in the SUSTAINED chamber, filtering element placed in the filtration chamber, and inlets and outlets for contaminated and contaminated water and reagents, characterized in that, in order to integrate the purification process by improving flocculation and recirculation of coagulants It ustanovlemnoy provided in the upper portion of the housing in the flocculation chamber and connected with the reaction chamber