SU1367998A1 - Horizontal settling tank - Google Patents

Abstract

The invention relates to the purification of natural waters for drinking and industrial water supply, and to the purification of wastewater, and improves the efficiency of water clarification by reducing hydraulic resistance and provides ease of maintenance. The sump contains a settling tank 1 with a collection pocket 3 and a dispersed system of bleaching water, made in the form of horizontal perforated pipes 5, directed against the flow of water to be purified. Each lower located pipe 5 is shorter than the upper one and is equipped with an individual locking member 6 with a remote control system. The clarified water is taken out by the pipes 5 simultaneously from several levels along the height of the sump. When the quality of the source water changes, the lower pipes 5 can be disconnected. 1 il. with f

Description

-axEZ

one

The invention relates to the purification of natural waters for drinking and industrial water supply, as well as to wastewater treatment, and is intended for use in wastewater treatment plants.

The aim of the invention is to increase the efficiency of clarification by reducing the hydraulic resistance and improving the operating conditions.

The drawing shows a schematic horizontal sump.

The settling tank contains a settling tank 1, a supply pipe 2, a collection pocket 3, a discharge pipe 4 and a distributed clarified water extraction system, designed in the form of horizontal perforated pipes 5, directed in the opposite direction to the flow of water to be purified. The pipes 5 are spaced from one another at a distance of 0.3-0.4 m in height of the settling tank and have different lengths, decreasing from the top pipes to the LOWER; On each of the two flexible pipes 5 there is an individual valve body 6 with a remote control system 7.

The sump works as follows.

The treatment water is supplied through pipe 2 to a settling tank 1, where the suspension of suspended matter occurs. The clarified water is taken at the same time from several levels along the height of the settling tank through perforated pipes 5. The upper pipe, which has the greatest length, draws water from the surface, and the other pipes take layers in layers from different zones along the height of the settling tank. Each layer is characterized by a certain composition of impurities by size and specific gravity, a well-defined parabola 679982

by the comical trajectory of the motion of the descending particles in horizontally moving layers of water. In accordance with

With this, the clarified water zone located behind the sedimentation zone is not the same in height and length of the settling tank. Therefore, the water is withdrawn by the pipes 5 at a different distance along the length of 10 of the sump. When water pollution changes, the lower pipes 5 of the clarified water extraction system can be shut off with the help of individual locking bodies 6 equipped with a remote control system 7. The clarified water collected by the pipes 5 is collected in the collection pocket 3 and discharged through the pipe 4.

The proposed horizontal r.t. 20 stove provides more effective water clarification by reducing the hydraulic resistance and eliminating vertical water flows in the settling zone. The invention of

25 will reduce the length of the compartment by 10–15%.

Claims (1)

Invention Formula 35 30 Horizontal sump containing a settling tank and a dispersed system of bleaching water in the form of horizontal flexible pipes, characterized in that, in order to increase the efficiency of clarification by reducing hydraulic resistance and providing ease of maintenance, the flexible pipes are located along the height of the sump 40 one from the other and are equipped with an individual shut-off body with a remote control, and each downstream pipe has a smaller length, 4t than top