SU812727A1 - Device for purifying "cofferb" liquid - Google Patents

Description

The invention relates to fluid purification and waste water containing suspended matter, oil, and fats can be used in all sectors of the economy, where obrazuyut- ³ Xia such waste water, for example in the chemical, petrochemical, and other machinery, as well as for purification of biochemical treated domestic wastewater; coming directly from the aeration tank, bypassing the secondary sedimentation tanks.

The closest to the proposed technical essence and the achieved effect is a device for liquid purification 15, including a flotation chamber placed on top of each other, a filter, a perforated air mixture supply pipe, an initial liquid supply unit, a tray for 20 foam removal, a washing water supply and removal system , drainage, sand trap, pocket, wash water drain pipe, filtrate drain pipe, foam drain tray 25 and its drain pipe outside the L11 structure.

A disadvantage of the known device is that it cannot purify contaminated wastewater in which the concentration of contaminants (suspended matter, insoluble contaminants, fats, oil products, etc.) exceeds 100 mg / l. In addition, during the washing (regeneration) of the filter, the liquid level in the aeration and flotation ae decreases and foam containing the concentrated initial impurities is lowered into the distribution air-water system. This in turn leads to the fact that the building must be stopped not only for the regeneration of the filter, but also for the inspection and cleaning of the water-air system, and this negatively affects the performance and efficiency of the entire device as a whole.

The purpose of the invention is to increase the intensity and increase the efficiency of the cleaning process.

This goal is achieved by the fact that the device is equipped with deaeration and pre-clarification chambers of the liquid connected in the upper part to each other and to the flotation chamber, while the deaeration chamber is connected to the pre-clarification chamber additionally in the lower part.

. 812727

In addition, in the proposed device, the pre-clarification chamber is equipped with a package of inclined plates.

The drawing shows a device, General view. _

The device consists of a housing 1, ^{3 of} a deaeration chamber 2, a pipe 3, a suspended sediment chamber 4, an inlet tray 5, a settling chamber .6, RETAIL-RETRACTION Pipelines 7, a flotation chamber 8, a diverting-supplying perforated pipeline 9, a grain filter 10, a drainage device 11, a pipe for discharging compacted sludge 12, a pipe 13 for supplying flushing water, a system 14 for flushing water, a tray 15 for draining foam, a pipe 16 for this tray, a chute 17 for collecting sand, a package of inclined plates 18, a box 19, channel 20, 20. leading wash water outside the structure, zone 21 of sediment compaction.

The device operates as follows. . 25

Sewage contaminated liquid is fed through the tray 5 into the deaeration chamber 2, from where it is supplied through the perforated pipeline 3 to the settling chamber 6, where the eons of suspended sediment are evenly distributed over the jq live section. Under the influence of a static pressure, the liquid rises through thin-walled thin-layer inclined plates 18, where fine-dispersed suspensions are precipitated intensively. They, under the influence of their own weight, slip into the settling chamber 6, oversaturated it and, in case of excess, descend past the limiting box 19 in the zone 21 of the seal 40 sediment.

The liquid passing through the packages of inclined plates enters through the perforated openings into the system of water-supply pipelines 7 and is directed to the flotation chamber 8 and filter 10, where it is evenly distributed over the entire area. In the flotation chamber, the liquid moves down jq and is subjected to the action of dispersed air coming in the opposite direction. or water-air mixture supplied through a perforated pipeline 9. The water-air mixture leaving the perforation 'or air is dispersed ³³ and uniformly distributed over the area of the flotation chamber with a porous elastic membrane, which covers the perforated pipe 9 of the air-water or air distribution system. Having passed the flotation zone, pre-treated wastewater or liquid is filtered through the loading of the quick granular filter 10 and discharged through the drainage device 11 through the piping system 13 outside the device. Pop-up impurities accumulated on the surface of the flotation chamber are discharged into the tray 15 and discharged outside the structure through the pipe 16 '. The compacted sediment from the zone 21 of the seal of the settling chamber is periodically discharged outside the structure through a perforated pipeline.

Rinsing water, and if necessary compressed air, is fed into the quick filter loading by piping system 13 and distributed over its area by drainage 11. Waste rinsing water is removed from the structure through the wash water collection pocket 22 and the exhaust system 14.

The filter load carried out during washing is delayed by the sand trap 17 and is returned to the filter. When washing the filter load, the flow into the aeon of flotation and liquid filtration through the system of outlet-supply pipelines 7 from the settling chamber does not stop. Pouring out of the holes of the piping system 7 and falling, the liquid washes the fabric of the water-air distribution system and thus regenerates its performance.

Claims (1)

The invention relates to the purification of liquids and wastewater containing suspensions, petroleum products, fats and can be used in all sectors of the national economy, where such wastewater is formed, for example, in chemical, petrochemical engineering and others, as well as for the purification of biochemical treated household water. Wastewater; coming directly from the aeration tank, mine secondary sedimentation tanks. The closest to the proposed technical essence and the achieved effect is a device for cleaning liquid, including flotation chamber placed above each other, filter, perforated pipes for supplying air mixture, source fluid supply unit, foam removal tray, supply and removal system wash water drainage, sandblasting chute, pocket, wash water removal pipeline, filtrate drainage pipeline, furnace drainage tray and pipeline to drain it outside the SI construction. A disadvantage of the known device is that it cannot be used to purify polluted wastewater, in which the concentration of contaminants (suspensions, insoluble contaminants, fats, oil products, etc.) exceeds 100 mg / l. In addition, during washing (regeneration) of the filter, the liquid level in the aeration and flotation zone decreases and foam is placed on the distribution water-air system, which contains concentrated source contaminants. This in turn leads to the fact that the structure must be stopped not only for the regeneration of the filter, but also for the revision and cleaning of the water-air system, and this adversely affects the performance and efficiency of the entire device. The purpose of the invention is to increase the intensity and increase the efficiency of the cleaning process. The goal is achieved by the fact that the device is equipped with deaeration and liquid pre-clarification chambers connected in the upper part with each other and with a flotation cell, while the deaeration chamber is connected with the pre-clarifying chamber additionally in the lower part. In addition, in the proposed device, the pre-brightening chamber is equipped with a package of inclined plates .: The drawing shows the device, a general view. The device consists of a housing 1, a chamber 2 deaeration, a pipeline 3, a chamber of suspended sediment 4, a supply tray 5, a settling chamber .6, a drain of the ae-inlet pipe 7, a flotation chamber 8, a ae of the a-inlet perforated pipeline 9, granular filter 10, a drainage device 11, a pipe of drainage of compacted sludge 12, a pipeline 13 for supplying wash water, a system of ы s 14 of washing water, a tray 15 for removing foam, a pipe 16 of this tray, a chute 17 for trapping sand, a bag inclined plates 18, box 19, channel 20. discharging wash water outside the structure, compaction zone 21. The device works as follows. Sewage contaminated liquid through tray 5 is fed into the deaeration chamber 2, from where it is fed through the perforated pipes to the wire 3, into the settling chambers b, where it is evenly distributed over the living section of the suspended sediment zone. Under the action of a static pressure, the liquid rises through thin-walled thin-layer inclined plates 18, where finely dispersed precipitates are precipitated intensively, which, under the effect of their own weight, slide into the settling chamber b, oversaturate it and, in the case of excess, descend past the limiting duct 19 sludge compaction zone 21. The liquid passing through the packages of the inclined plates enters through the perforated openings into the system of outlet and inlet pipelines 7, and is directed to the flotation chamber 8 and the filter 10, where it is evenly distributed over the entire area. In the flotation cell, the liquid moves downward and is exposed to discharged air or water-air mixture supplied through a perforated pipe 9. The water-carrying mixture is dispersed into the mixture or air and distributed evenly over the flotation cell surface by a porous elastic sheath, which covers the perforated pipe 9 water or air distribution system. Passing the flotation zone, the pre-treated wastewater or liquid is filtered through the loading of the fast granular filter 10 and discharged through the drainage device 11 through the piping system 13 outside the device. Pop-up contaminants accumulated on the surface of the flotation cell are discharged into tray 15 and discharged through pipe 16 over; construction limits. The compacted sludge from the sealing zone 21 of the settling chamber is periodically withdrawn outside the building through a perforated pipeline. Wash water, and, if necessary, compressed air, is fed into the quick filter feed by the piping system 13 and is distributed over its area by drainage 11. Waste wash water is removed from the facility through the wash water collection pocket 22 and the discharge system 14. Take out the wash the filter is retained by the sand chute 17 and returned back to the filter. When washing the loading of the psadac filter into the flotation zone and filtering the liquid through the system of discharge and supply pipelines 7 from the settling chamber, does not stop. Poured out of the openings of the piping system 7 and the pad, the liquid washes the fabric of the water-air distribution system and thus regenerates its operability. Claim 1. Device for cleaning Sofaffer liquid containing petroleum products, fats and suspensions, comprising a housing, a filter placed above each other and a flotation cell in which a perforated pipeline is installed to introduce the water-air mixture, the source fluid supply unit and the foam tray differing In order to increase the intensity and efficiency of cleaning by improving the hydrodynamic conditions of cleaning, the device is equipped with deaeration chambers and liquid pre-clarification, in the upper part with each other and the flotation chamber, while the deaeration chamber is connected to the pre-clarification chamber additionally in the lower part, 2, device pop. 1, characterized in that the pre-brightening chamber is provided with a package of inclined plates. Sources of information taken into account in the examination 1. USSR author's certificate 552305, cl. C 02 C 1/26, 1974.