RU1834850C - Device for sewage treatment - Google Patents

Abstract

The installation contains a removable chamber for collecting fine particles of fine impurities, a settling tank with an inclined bottom, an oil collection chamber, a fine filter, a clean water tank and a pump. A distinctive feature of the installation is that it is equipped with a coalescing filter installed in the sump, a filter for removing mechanical impurities and a coalescing fine filter, sequentially installed in front of the fine filter, while the filter for removing mechanical impurities is placed in the clarified water chamber, the pump is installed after the coalescing fine filter, the collection chamber for coarse particulate matter is placed in the settling chamber and installed obliquely, oil collecting compartment is placed in the chamber and the clarified water is formed as a semi-submersible neravnobochnoy trapezoidal cell (partitions), the smaller base of which is directed towards the bottom of the settler. 2 C.p. f-ls, 1 ill.

Description

(L

WITH

The invention relates to the field of wastewater treatment containing suspended solids and oil products, and can be used for wastewater treatment from car washing, agricultural machinery, other vehicles and storm water.

The purpose of the invention is to simplify the design, reduce operating costs, improve the quality of wastewater treatment and increase the resource of their reuse.

The drawing shows a General view of the installation.

The sewage treatment plant BOA consists of a removable chamber 1 for collecting coarse particulate matter, installed in a settling tank 2 with an inclined bottom 3, a chamber 4 for collecting petroleum products, a filter 5 for cleaning solids, a coalescing fine filter 6, a pump 7. fine filter 8 and a reservoir 9 for collecting clean water. The sump 2 is divided by a partition 10 with a coalescing filter 11 into a settling chamber 12 and a clarified water chamber 13. A scraper device 14 is installed in the settling chamber 12, with scrapers 15 adjacent to the bottom 3. In order to improve the separation of mechanical impurities, the coarse particulate matter collection chamber 1 is installed obliquely with the possibility of draining waste water onto the inclined bottom 3, which allows the bulk of the mechanical impurities to accumulate on tilted bottom between the scratches.

00

with

N

00 joint venture

about

with

The clarified water chamber 13 is divided by the petroleum product collection chamber 4 into a petroleum product storage section 16 and a clarified water section 17. In order to improve the conditions for the accumulation of oil products in section 16, chamber 4 is configured as a semi-submerged unequal trapezoidal cell, the smaller base of which is directed to the bottom of the sump. The collection and removal of petroleum products from the water surface is carried out by devices 18 installed both in section 16 and in the settling chamber 12. The filter 5 is placed in the mark 19 of the clarified water chamber 13 and, to ensure its regeneration by treatment with a current of water each time after the pump 7 is turned off , is set below the level of the coalescing filter 6. The coalescing filter 6 is made in the form of hydrophobic 20 and hydrophilic 21 charges placed in series in the housing. To prevent re-dispersion of oil particles in water by pump 7. The fine filter 8 is a bulk filter where fine gravel, sand, activated carbon, or a combination thereof can be used as a filter charge.

The sump 2, filters 6-8 and the tank 9 are interconnected by a system of pipelines 22, 23. To regenerate the filter load from the oil product, the installation through the valve 24 is connected to the steam line 25. The clean water tank 9 through the valve 26 is connected to the water pipe 27, from which filling the installation with water and maintaining its predetermined level in the sump 2, valves 28-39 are installed to control the installation.

Installation works as follows.

Waste soda from the tray 40 enters the removal chamber 1, where coarse particulate matter is captured. From the chamber 1, the waste water is poured onto the inclined bottom 3 of the settler 2, where mechanical impurities settle and accumulate between the scrapers 15, and the largest particles of oil products float to the surface. Next, the waste water through a coalescing filter 11 flows into the chamber. During the passage of the filter 11, small particles of oil products are retained by the filter material of the filter, coarsened and floated in the compartment 16 of the chamber 13, where they accumulate in the upper part. The water goes down, passes under the oil collection chamber 4, where it is additionally freed of mechanical impurities, enters the sample 19. From the sample 19, the waste water under the influence of the pump 7 through the filter 5 and the valve 32 enters the fine filter 6, where having passed the hydrophobic layer 20, it is finally freed from oil products,

which accumulate at the top of the filter. Water pump 7 through the valve 35 is fed to the fine filter 8, from which the purified water through the valve 37 enters the tank 9 for reuse or through the valve 36 into the sewer in the case of storm water treatment.

The sludge from the removable chamber 1 is periodically discharged by any known cargo. sand lifting device

5 pad or in the car.

The sediment accumulated on the bottom 3 of the settler 2 is captured by the scraper device 14 and discharged into the cargo container 41. located in the mark 42.

0 From the container 41, the sediment by the lifting device together with the sediment from the chamber 1 is sent to the sand pad.

The oil products accumulated on the surface of the water from the settling chamber 12 and

5 sections 16 through the device 18 are discharged into the oil collection chamber 4, from where they are periodically taken and sent for regeneration. The accumulated oil products in the upper part of the filter 6 periodically

0 are withdrawn through the collecting device 43 and valve 39 into the chamber 4.

The coalescing filter 11 is periodically removed for regeneration or replaced with a new one. Filter 5 is regenerated

5 by reverse fluid flow every time after pump 7 stops.

For regeneration of fine filters 6 and 8, valves 32. 35, 37, 38 are closed. Valves 29, 30, 33, 34 open. Through

0 valve 24 and pipe 2.2, steam is supplied to the filters. which removes oil products from the filter charge. The regeneration products are discharged through a pipe 23 to a settling chamber 12. After steam is purged with steam from the reservoir 9, filters are flushed through the valve 28 through the valve 28.

After flushing the valves 28,

29.30, 33, 34 are closed, and valves 32.35.

0 37.38 open. Installation is ready again

0 to work. The water level in the sump 2 is maintained by water from the tank 9 through the valves 28, 31. The tank is fed with the ood from the water supply 27 through the valve 26.

5 The proposed design of the installation allows to simplify its design, reduce production space occupied by the installation, reduce operating costs by introducing a filter regeneration mode, improve quality

Claims (3)

water purification through the use of fine filter presses. This, in turn, allows increasing the reuse resource of water and reducing the consumption of the latter. SUMMARY OF THE INVENTION 1. A sewage treatment plant comprising a removable collection chamber for coarse particulate matter, an inclined sump, oil collection chambers, a fine filter, a clean water tank and a pump, all of which are separate. that the installation is equipped with a goat filter installed in the sump and dividing the latter into a settling chamber and a clarified water chamber, a scraper device installed in the settling chamber, a filter for removing mechanical impurities and a coalescing fine filter, sequentially installed in front of the fine filter, M 14 a filter for removing mechanical impurities is placed in the clarified water chamber, a pump is installed after a fine filter coalescing, a coarse particulate filter is placed in a settling chamber and installed obliquely to drain daily water onto an inclined bottom, and a petroleum product collection chamber is placed in the clarified water chamber and made in the form of a semi-submerged unequal trapezoidal cell, the smaller base of which is directed to the bottom of the sump. 2. Installation according to claim 1, characterized in that the fine-tuning coalescing filter is made in the form of hydrophobic and hydrophilic charges placed in series in the housing. 3.Pop installation. 1, on the assumption that the filter for removing mechanical impurities is set below the level of the fine filter coalescing. # 0 f0 & Sfy