RU169236U1 - Surface water intake in the sump - Google Patents

Abstract

The device relates to water supply, it relates to water purification and can be used to purify surface wastewater from water supply sources. A surface water intake device in a sump, including a water collector with a water drainage device and water intake windows located at the level of the water surface, while additionally outside the water intake windows pipes are installed that feed the reagent to a distance l from the intake windows and to a depth h from the water surface, subject to the conditions: l = V⋅t, m, h = V⋅ t, m, where V is the horizon te a contaminated flow rate, m / s; V- vertical velocity of the polluted flow, m / sec; t- time of aggregation of fine particles contaminated groundwater flow s.Tehnichesky result consists in wastewater treatment efficiency. 2 ill.

Description

The device relates to water supply, for the treatment of water and can be used to treat surface wastewater from water sources.

A device for cleaning water and surface wastewater (A.S. 1701338, from 02/07/1990, publ. 12/30/1991). The device consists of a water intake, made in the form of a float with blades in the upper part, installed in a plan at an angle to the axis of the float, and a pipe siphon, the water intake part of which is made in the form of an annular pipe with holes along the periphery, and the collection part is freely installed inside the vertical drainage pipe , the upper part of which is freely placed in the center of the water intake

However, the known device is difficult to manufacture and design, and also does not fully work in calm weather.

The closest technical solution for the totality of the characteristics and the achieved result is a device for treating water and surface wastewater (A.S. 1717171, from 05.03.1990, publ. 07.03.1992). The device, made in the sump, consists of a pipe for discharging water, in which there is a slot for discharging water. A tray with an inclined bottom is located on the surface of the sump; an opening is made in the center of the tray. At the level of the tray there are water intake windows.

However, the use of the known device does not allow to obtain the necessary level of purification due to the lack of additional devices supplying reagents.

The main objective of the utility model is to increase the purification of process water through the use of reagents and their supply at a certain distance from the intake windows and at a certain depth from the water surface.

This is achieved by the fact that in the surface water intake device in the sump, which includes a water collector with a water drainage device and water intake windows located at the surface of the water, additional pipes are installed on the outside of the water intake windows supplying the reagent to a distance l from the water intake windows and to a depth h from water surface subject to the conditions:

l = V _g ⋅t _a , m,

h = V _in ⋅t _a , m,

where V _g is the horizontal velocity of the polluted stream, m / s;

V _in - the vertical speed of the polluted stream, m / s;

t _a - aggregation time of fine soil particles of a contaminated stream, s,

If the distance or depth of supply of the reagent is less than the calculated one, the fine particles will not have time to aggregate and will fall into the water intake windows; if the distance increases, the cost of manufacturing and operating the device will increase.

The essence of the device is illustrated by graphic materials, which depict:

in FIG. 1 is a general view; Fig. 2 is a view A of Fig. 1.

The device includes a floating water collector 1, water intake windows 2, nozzles 3 supplying the reagent to a distance l from the water intake windows and to a depth h from the water surface, a central pipeline 4.

The device operates as follows.

The surface layer of water flows from the sump to the catchment 1 through the intake windows 2 and then is transported along the inclined bottom outside the sump. The reagent from the reagent station is fed through the nozzles 3 to the upper boundary of the polluted stream through a central pipeline 4. At the time of supply of the regent to the boundary of the polluted stream, at a distance l from the intake windows and to a depth h from the water surface, subject to the conditions: l = V _g ⋅t _a , m and h = V _in аt _a , m,

where V _g is the horizontal velocity of the polluted stream, m / s;

V _in - the vertical speed of the polluted stream, m / s;

t _a - aggregation time of fine soil particles of a contaminated stream, s,

aggregation of fine particles of the contaminated stream occurs, as a result of which the deposition rate of aggregated particles increases sharply. As a result, the mass of deposited particles suppresses the process of raising the contaminated stream in the area of surface water intake and increases the efficiency of cleaning water sources.

Claims (4)

A device for surface water intake in a sump, including a floating casing with a water drainage device and water intake windows located at the surface of the water, characterized in that pipes are additionally installed on the outside of the water intake windows supplying the reagent at a distance l from the water intake windows and a depth h from the surface water subject to the conditions: l = V _g ⋅t _a , m, h = V _in ⋅t _a , m, where V _g is the horizontal velocity of the polluted stream, m / s; V _in - the vertical speed of the polluted stream, m / s; t _a - aggregation time of fine soil particles of the polluted stream, s.

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