SU1761691A2 - Device for biochemical treatment of sewage - Google Patents

Abstract

This invention relates to wastewater treatment plants. The purpose of the invention is to increase the efficiency and cost-effectiveness of wastewater treatment. The installation includes a reservoir 1 for collecting incoming wastewater, a pump 2, a hydraulic elevator 4, a secondary settling tank 6, a reservoir 7, a biotank column 13, a chlorinator 17 with tablets 18 and a contact chamber 19. When the device is operated, the clarified liquid is removed from the sediment chute 8 by perforated pipeline 9, suspended on the float dispensers 10, and falls on the reflective umbrella 12 in the form of several cylinders of different diameters with longitudinal grooves. The reflected liquid is distributed over the surface of the upper biotank column 13. When the liquid flows through the cassettes 14, the dissolved organic matter is oxidized. In the secondary settling tank, biomass is deposited. The invention reduces the costs of cleaning and improves its quality. 3 hp f-ly, 5 ill. SO with

Description

The invention relates to the biochemical purification of household water and close to it in composition of wastewater and can be used in the treatment of wastewater from one or more residential and public buildings in rural areas.

The aim of the invention is to increase the efficiency and effectiveness of the process of cleaning and disinfecting small amounts of wastewater.

FIG. 1 shows the general scheme of the device; in fig. 2 shows a section of a reflective umbrella; in fig. 3 - reflective umbrella, top view; in fig. 4 shows a section through the elements of two cassettes; in fig. 5 is a top view of a cassette item.

The device comprises a reservoir 1 for collecting incoming effluents, installed

It has a pump 2, in which the hydraulic elevator 4 is mounted on the discharge pipe 3. The suction pipeline 5 of the hydraulic elevator is connected to the secondary settling tank 6. The discharge pipe 3 is connected to the cylindrical tank 7 with averaging, settling and salinity chambers. In the annular sedimentary gutter 8 of the reservoir 7, perforated pipes 9 are placed, suspended from the float feeders 10 and connected to the drainage pipes 11. A reflective umbrella 12 is installed under the discharge pipe 11. A biotank column 13 with dish-shaped cassettes 14 is installed under the umbrella. For disinfection of the treated effluent An additional float dispenser 15 is installed in the sedimentary trough with a discharge pipe 16, which is connected to the lower ChloVI Os tablet.

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17. The chlorinator 17 is filled with calcium hypochlorite tablets 18 and is placed above the contact chamber 19.

The umbrella body 12 consists of a cylinder with a cut off lower conical part 20, cylinders 21, 22, and a cylinder with a spherical part 23. In the umbrella body there are longitudinal grooves 24.

In the cassettes 25, 26, the biotank columns have recesses in the form of corridor channels 27, 28, 29, 30 with a drain pipe 31 at the end of the last channel 30. The width of the channels varies depending on the height of the fluid layer in the channel, i.e. in the bottom lifting area, the width of the channels widens. The bottom of the channel is oval. The bristles 32 are attached to the walls of the channels at an angle of 45-90 ° along the movement of the fluid flow. The notches of the cassette loading can be made in the form of W-shaped channels.

The device works as follows.

Wastewater enters collection tank 1. When the tank is filled to the water level max. the pump 2 is automatically turned on, which supplies the effluent through pipeline 3 to the hydraulic elevator 4. The pipeline 5 connected to the hydraulic elevator draws the purified liquid from the secondary clarifier 6. Next, the wastewater mixture enters the cylindrical tank. The clarified liquid is removed from the sediment chute 8 by perforated pipe 9. Suspension of pipelines 9 on float-operated dispensers 10 provides liquid pressure in front of the reflective umbrella 12. Reflected liquid is evenly distributed on the surface of the upper cassette of the biotenk column 13. Oxidation of the liquid through the disk cassettes 14 is carried out. dissolved organics. Together with the liquid to be cleaned, loose mineralized biomass is washed out and taken out. In the secondary clarifier 6, biomass is deposited, and the settled water enters contact chamber 19, where calcium hypochlorite solution is also fed from chlorinator 17. Disinfectant solution is obtained when a chlorineator receives a small portion of clarified liquid from additional float dispenser 15 and dissolves lower calcium hypochlorite tablet. After complete dissolution of the lower pill, its place is taken up. Further, the cleaned and disinfected liquid is discharged to the gravy or water bodies.

The shoulders on the umbrella body 12 of the periodic profile (Fig. 2, 3) formed by the cylinders 20, 21, 22 and 23 when the liquid is supplied to the umbrella ensure crushing

liquid on a separate jet.

In this case, the liquid streams reflected from each step have different trajectories of movement. Crushing the reflected fluid and increasing the surface irrigation contributes to the longitudinal grooves 24. The draining fluid entering the cartridge 25 enters the first channel 27 and then moves along channels 28, 29 and 30. At the end of the last channel 30, the liquid is drained into

nozzle 31. Bristles 32 are attached to the channel walls. Attached microflora is formed on the bristles, which oxidizes dissolved organic pollutants. The swirls in the fluid, formed by bristles set at an angle of 45-90 ° to the path of the fluid, promotes the transfer of mineralized biomass to the center of the channel, where it is picked up by the flow

fluid. Since the height of the liquid layer decreases at the point where the bottom rises to the discharge nozzle 31, to equalize the speed of the flow, the width of the channels 29 and 30 increases depending on the height

lay Drain pipes cassettes 25 and 26 are offset relative to each other.

Installing the hydraulic elevator on the pressure line of the pump and connecting it to the secondary sump promotes

the degree of wastewater treatment due to the introduction of partial recycling of wastewater. Creating a uniform distribution of liquid over the surface of the upper cassette with the help of a reflective umbrella of a periodic profile ensures a uniform loading of all the cassette containers, which will also increase the cleaning effect.

Making cassettes in the form of W-shaped channels with attached bristles will ensure the effective oxidation of organic contaminants and the removal of mineralized biomass.

Accurate dosing of calcium hypochlorite solution using the proposed technical

solution of the chlorinator, will allow to eliminate excessive or insufficient disinfection of effluent and economically dispose of reagents,

Claims (4)

1. Device for biochemical sewage treatment according to the author. St. No. 1118620, that is, with whole improvements in efficiency and economically cleaning and disinfection process small quantities of wastewater, it is equipped with a reservoir for collecting incoming wastewater with a pump inside it, a hydraulic elevator, a secondary settling tank, a tablet-type chlorinator, a contact chamber, a reflective umbrella and an additional float feeder with a discharge pipe, while the hydraulic elevator is located on the pump discharge pipe telling the collection tank for incoming wastewater and the cylindrical tank, the suction line of the hydraulic elevator is connected to the secondary settling tank, an additional float first dispenser installed in a sedimentary zhe Lobe cylindrical tank and its discharge conduit connected to a lower tablet chlorinator chlorinator mounted above the contact chamber and with its com- Shchen, secondary clarifier connected to the biotank column and contact chamber, and the reflective umbrella is located under the drainage tube and above the biotank column. 2. Device pop. 1, characterized in that the reflective umbrella is made in the form of connected cylinders of different diameters with longitudinal grooves. 3. Device pop. 1, characterized in that the biotank column is equipped with dish-shaped cassettes with grooves in the form of corridor channels and bristles attached to the channel walls at an angle of 45-90 ° in the direction of flow, and the channel width increases in the bottom lifting region, and the drain pipe located at the end of the last channel. 4. Device on PP. 1, which differs from the fact that the notches of the cassette loading are made in the form of W-shaped channels. C / 77PSfU U. & P7 & X U YN / 77 // 7 - - 8 1 $ D.8. /groin. 8 years 73 24 thirty Fig.4Fig. 2 flt / е.З 25 FIG. five