RU1787042C - Water cleaning device - Google Patents

Abstract

SUMMARY OF THE INVENTION: the casing is divided by vertical partitions into sections, each section is divided into two parts by a vertical partition to form a winding path of the water to be purified through the fiber filter nozzle located in the sections. Each section has a sludge trap and an autonomous flushing system. 2 ill.

Description

The invention relates to water purification devices, in particular to remove suspended and colloidal impurities from water, and can be used for partial and deep clarification of natural waters in water supply systems, as well as for the treatment of industrial and domestic wastewater treatment. The device is expediently used with limited vertical dimensions of space for placing treatment facilities, for example, under rolling mills, in underground workings.

A filter with a filter nozzle is known, comprising a vertical housing and nozzles for introducing and discharging purified water.

The disadvantages of such a device are the limitation of the thickness of the filter layer due to the limited vertical dimension of the housing, which reduces the duration of the filter cycle.

A water purification device is also known with a horizontal body divided by vertical partitions into sections equipped with filter elements, inlet and outlet pipes connected to opposite walls of the body, and a bottom in the form of bunkers, sludge traps equipped with pipes for discharging sludge.

Such a device is free from the drawbacks of device 1 — it allows the construction length to be unlimitedly extended, sections are regenerated independently, but its drawbacks are the low filter capacity of the filter elements in the form of perforated baffles, quickly clogged by pollution and require frequent cleaning, as well as a low degree of water purification from finely divided suspended and colloidal impurities not retained by the mesh filter elements.

The purpose of the invention is to increase the filter capacity and the degree of water purification.

In FIG. 1 schematically shows a device, a longitudinal section; in FIG. 2 - same, plans on three levels.

The device comprises a housing 1, divided by vertical partitions 2 into successively arranged sections with pyramidal sludge collectors 3, equipped with a nozzle of synthetic fiber material 4 and vertical continuous partitions 5, the upper edges of which are located above the water level, and the lower edges above the sumps, i.e.

00

with

Xi s

Xi

ABOUT

Nd

with

at the level of the lower border of the nozzle. Under the fiber nozzle 4, separate for each section compressed air distribution systems 6 are arranged, connected to compressed air lines 7. The tank is equipped with distribution and collection channels 8, nozzles for supplying purified water 9, drainage of the filtrate 10, as well as nozzles 11 for discharging sludge. Water bypass into adjacent sections is made in the form of flooded spillways 12. For discharge of sludge, the device instead of nozzles 11 can be equipped with airlifts (with limited vertical dimensions). The bunker shape of the sludge collectors facilitates the subsidence of sediment to the bottom and its discharge.

The fiber nozzle is made of separate blocks with rod frames, filled throughout the entire volume with ruffs of fibers, for example, synthetic - lavsan or kapron.

For uniform distribution of water over the separation section, the distance between adjacent partitions is advantageously made equal to 1/2 of the nozzle thickness in the section.

The number of consecutive sections N is directly proportional to the filtration rate V and the length of time the water stays in the device g and is inversely proportional to the thickness of the nozzle in one section I, For deep water purification it must go the way V g. Since in one section separated by a partition, the water passes the way 21 (one thickness I in the downward flow and the second time the thickness I in the upward flow), then the required number of sections will be

N Vr / 2l.

It is advisable to arrange the water transfer from the previous section to the subsequent one in the form of a flooded spillway over the entire width of the dividing wall, which ensures uniform distribution of water across the width of the section and the transition from the upward flow in the compartment of the previous section to the downward flow in the compartment of the subsequent section.

The device operates as follows.

The outgoing water through the nozzle 9 enters the distribution channel 8, from where it is poured into the first section, filtered from top to bottom through the fiber nozzle 4, bends around the partition 5, filtered from bottom to top through the fiber nozzle of the second compartment of the section, poured through the partition 2 into the second section, where repeats its path through the first

section, and so on until the last section, from where the purified water is collected by channel 8 and discharged through the nozzle 10. Contamination during operation of the device is delayed in the pores of the fibrous nozzle 4 due to sticking to the electrified fibers.

When the sediment accumulating in the pores of the nozzle is carried out, a filtering stream is transported by inertial forces to the bottom of the hopper (sludge collector 3) by inertial forces.

In order to regenerate the fiber nozzle, the feed water supply is turned off and compressed air is supplied from the main to the regenerated section. It is distributed over the section area by a distribution system 6 (e.g., perforated pipes) and purges the fiber nozzle. Bubbles of air shake the fibers, tear off the dirt from them. Simultaneously with the purge, a shut-off device is opened on the sludge discharge pipe 11 and water, along with pollution, is discharged into the sewer. Depending on the degree of contamination of the nozzle, all sections or selectively silted sections can be regenerated. After the regenerated sections are completely emptied, the device starts up again by opening the locking device on the nozzle 9.

Obviously, the nozzle of the first sections of the device will be silted to a greater degree; they will be regenerated more often. In this case, the subsequent sections will play the role of a buffer, which prevents the introduction of pollution when the device is put into operation after regeneration.

Claims (1)

SUMMARY OF THE INVENTION A water purification device comprising a casing divided by vertical partitions into successive sections, sludge collectors with outlet pipes connected to their lower parts, filter elements located in sections and connected to opposite walls of the housing inlet and outlet pipes, characterized in that, in order to improve the quality of cleaning, each section is equipped with a vertical partition dividing it into two parts, the lower edge of which is located above the sludge collector nickname and the upper - above water level by filtration, the filter element is a nozzle made of synthetic fibers, and partitions separating the housing into sections, are made with submerged weirs. 454 ft  AL ft 4 5 ± V 8 Fi g