SU1116133A1 - Arrangement for discharging waste water into water stream - Google Patents

Abstract

1. DEVICE FOR DRAINING SEWAGE WATER INTO A WATER, containing a main pipeline installed above the surface of high water in a watercourse to which branches are attached from the bottom, so as to intensify the self-purification of the watercourse by eliminating secondary contamination with welded bottom materials watercourse, it is equipped with low-pressure water-air zzhektory, installed on the outlets above the water level, and the ends of the outlets are located in the right part of the watercourse. (L with O) from 00

Description

2. The device according to claim 1, about the fact that the lower ends of the bends are angled

1116133

25-50 to the bottom of the watercourse, and their outlets are directed in the direction of the flow of water in the watercourse.

one

The invention relates to the protection of waters from pollution and can be used to improve the sanitary state of water in waterways when conducting water protection measures on rivers and other watercourses.

A device for the deep discharge of sewage into water courses and water bodies is known, which has a pressure pipeline placed at the bottom with upward tips, equipped with an ejector having an aeration pipe, which allows aeration of the water flow in the discharge area tlH,

Weighing substances entering the river from the upward caps are floated with air bubbles sucked in by the ejector along the depth of the river from the tip to the surface of the water, and are carried along by the flow below the discharge pipe, and the process of self-purification is intensified along the entire width of the river below the outlet due to aeration. waste water and the distance to a cross section for a given mixing degree is reduced for impurities that are in water in a dissolved state. At the same time, there is no sufficiently effective mixing with water. mi river for short distances from the range of release.

With a high content of suspended solids in the wastewater, the latter are deposited in the immediate vicinity of the discharge section, contributing to the sedimentation of the river and entering the pipeline with sedimentation sediments, especially when measuring the distribution of velocity and flow direction over its depth and width.

However, the installation of the aerator unit is efficient only if there is a significant flow of sewage and requires significant capital expenditures. In addition, difficulties arise during the operation of devices installed underwater.

to exercise effective control and management of their work and to eliminate emergency situations. The closest to the proposed 5 to the technical essence and the achieved result is a device containing a main pipe installed above the surface of water, high waters in a watercourse, to which are connected bottom lines 2.

Discharge of sewage through nozzles above the water surface of the reservoir increases the dilution efficiency.

5 wastewater at short distances from the discharge section. Flowing jets also provide continuous natural aeration of water in the river, while improving the oxygen regime of the river.

0 and, accordingly, the process of self-purification, nor the river water below the discharge of waste.

However, air bubbles generated by the turbulization of the surface of river water around the falling streams quickly collapse, since they are located predominantly at the water-air interface. Therefore, when suspended substances are collected with wastewater

 They are quickly deposited on the river bottom in the vicinity of the sewage discharge site, since the flotation ability of air bubbles in this case is insignificant. Over time, below

5 wastewater discharge pits are formed, the cones of sedimentation of precipitated suspended substances, contributing to the formation of contaminated bottom sediments, constantly operating sources of secondary pollution of the river

water. The disadvantage of this design is also the location of the ends of the taps directly above the top of the water, since the discharge is from 45; water in winter to the surface of ice can lead to the formation of density flows

liquid over the ice of the watercourse and large areas of contamination in the form of frozen wastewater.

The purpose of the invention is to intensify the self-cleaning of a watercourse by reducing the sedimentation of suspended matter of its bottom and eliminating secondary contamination.

The goal is achieved by the fact that a device for discharge of sewage into a watercourse containing a main pipeline installed above the surface of high water in the watercourse to which the outlets are attached below is provided with low-pressure water-air ejectors installed on the outlets above the water level, and the ends of the outlet ejectors in the bottom of the watercourse

It is advisable that the lower ends of the BRANCHES be located at an angle of 25-50 ° to the bottom of the watercourse, and their outlets are directed in the direction of the flow of water in the watercourse.

Supplying each of the outlets with a low-pressure water-air ejector ensures that the sewage water is filled with air and the air bubbles are formed at this time (° C) ensure the flotation of suspended solids contained in the wastewater and riverine water, contributing to their longer suspension in suspension, while biochemical oxidation is accelerated. their organic component and the self-purification of the watercourse is intensified, since the rate of destruction of organic substances in bottom sediments is more than an order of magnitude lower than when they are found enii in a suspended state.

The arrangement of water-air ejectors at the outlets of the water level allows creating a flow rate in the constricted part of the ejector sufficient to suck the necessary amount of air from the atmosphere, i.e. It ensures efficient operation of ejectors at low pressures of waste water in the pipeline.

Placing the ends of the taps in the bottom part of the watercourse ensures the effective flotation of suspended solids throughout the whole living section of the river flow, as well as rendering the suspended particles in a suspended state from the surface of the bottom sediments, thus increasing the residence time in the suspended state of non-solvent 161334

organic substances and, accordingly, accelerates the process of their destruction.

Such a constructive solution provides directional input of 5 water-air mixture to the bottom layer of water in all seasons of the year, including during the freeze-up period, to enhance the self-purification of the watercourse and during low temperatures.

FIG. 1 shows a device for discharge of wastewater into a watercourse, general view; in fig. 2 shows a section A-A in FIG.

The wastewater disposal device includes a main pipeline 1 to which outlets 2 are connected, each of which is equipped with a low-pressure water-air ejector 3. The main pipeline 1 is installed above the surface of the high water level in the watercourse 4, and the ejectors are installed on the outlets of the EEPCOKI level water in the watercourse 4. The lower ends of the outlets 2 are located at an angle oL 25-50 to the bottom of the watercourse 4.

The discharge of wastewater into watercourses is carried out in the following way.

 Wastewater along with suspended solids in them enters the main pipeline 1 and further along the outlets 2 together with suction through low pressure

5, air-carrying ejectors 3 are directed by air into the bottom sediments of the waterway 4, providing vosmuchivanie. When bubbles, air, and particulate matter emerge, sediment particles float throughout the depth of the stream. Simultaneously with the directional introduction of the water-air mixture in the watercourse 4 by a special unit (the creation of water discharges in the watercourse from the reservoir, the discharge by means of soft membrane dams or the ordering of the riverine stream by means of jetting systems,

0 local narrowing of the channel, the device of dams, etc.) creates a flow rate sufficient to transport suspended solids along the length of the watercourse.

5 When installing the lower part of the outlets at an angle of 25-50 ° to the bottom of the watercourse, effective mixing of floated suspended solids and suspension of sediment solids from the surface of the bottom sediments with subsequent transportation of all types of suspended solids along the water flow over the entire living area are provided. limits of the sewage entry zone. At an angle greater than 50, a local erosion of the bottom of the watercourse occurs (local deepening A-A

777 77Г777-7 / /// /

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(pat, 2,336, ma), while flotation and movement of suspended solids over the area will be inefficient, and at an angle less than 25 ° there is no erosion, flotation and transportation of bottom sediments, as the stream of waste liquid loses its energy reaching the bottom.

Claims (2)

1. DEVICE FOR DISCHARGE OF WASTE WATER INTO A WATERWATER containing installed above the surface of the water (72) N.G. Prima, G.G. Chernyavsky, E.B. Klein, I.V. Korinko and V.I. Kopay (71) All-Union Scientific Research Institute for the Protection of Water (53) 628.336 (088.8) (56) 1. USSR Copyright Certificate No. 431286, cl. E 03 F 5/00, 1972. 2. USSR Copyright Certificate No. 649797, cl. E 03 F 1/00, 1974. above a high water watercourse main pipeline, to which are attached the bottom outlets of aphids sistent in that, with a view to intensifying the self-cleaning of watercourse through the elimination of secondary Nogo ¹ zagrazneniya suspended solids bed of the watercourse, it is provided with low-pressure water-air ejectors installed on the tap above water level, and the ends of the branches are located in the bottom of the watercourse. 2. The device according to claim 1, characterized in that the lower h ends of the taps are at an angle 25-50 ° to the bottom of the watercourse, and their outlet openings are directed in the direction of the flow of water in the watercourse.