RU2617156C1 - Waste water treatment device - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: waste water treatment device consists of consecutive spirally arranged sump, skimmer, secondary clarifier, particulate filter, sorption filter, purified water tank, which are located under a single cylindrical body made of fiberglass, which is the most lightweight, durable material, not exposed to any aggression.

EFFECT: rational and efficient treatment of wastewater, simple design, maintenance, and mobility.

4 dwg

Description

The invention relates to a device for wastewater treatment and can be used to purify water from chromium, chlorides, sulfates, suspended solids, surfactants, BOD and COD.

A known device for wastewater treatment, including sequentially arranged cleaning units: settling tank-averager, anaerobic unit, anoxide unit, oxide unit, membrane filtration unit, purified water collection tank, reagent tank, automatic control unit, sludge collection tank, disinfection unit purified water, as well as auxiliary equipment, including pumping equipment, pipelines, valves, air supply system, aeration device.

The averaging sump is equipped with a mechanical cleaning device, which is a mechanical grill, a macerator, a drum filter, a mud filter of a hydrocyclone principle of operation.

Pumping equipment includes a reagent metering pump, a vacuum pump for the membrane unit, a backwash pump for the membrane unit, a wastewater treatment and circulation pump, an excess sludge removal pump and a tank emptying pump / Patent for invention RU 2537611, IPC C02F 9 / 14, C02F 3/30, C02F 1/44, C02F 103/20. Installation of wastewater treatment / Yu.A. Trukhin, B.V. Vasiliev et al. Publ. January 10, 2015 / [1].

The disadvantage of this installation is the lack of removal of pop-up substances. Another disadvantage is the need for various pumping equipment requiring high energy consumption and supervision.

Closest to the claimed invention is a wastewater treatment plant, which consists of two blocks and contains: a flotator with a disk aerator, a sand trap, a settler, a sedimentation tray, two filters with different loads. The installation has a nozzle for removing sediment from a sand trap, a nozzle for removing sediment of a sump, an outlet pipe for floating sediment, an overflow pipe, a nozzle for removing sediment of a granular filter, a nozzle for removing sediment of a sorption filter / Utility model patent RU 155231, IPC C02F 9/08, C02F 1/24, C02F 1/28, C02F 1/40. Wastewater treatment plant. Strelkov A.K. and other publ. September 27, 2015 / [2] - adopted as a prototype.

The disadvantage of the installation is the inability to supply reagents and the difficulty of replacing the load in the filters. Another disadvantage is the presence of a connecting seam between the blocks, which reduces the reliability of the structure and complicates its manufacture.

The essence of the invention is the creation of a compact, combined, efficient and easy-to-use installation that allows for deep cleaning of domestic and industrial wastewater.

The technical result - improving the quality of wastewater treatment, simplifying the design of the device for wastewater treatment, expanding the functionality, increasing the efficiency of its work, as well as simplifying its operation.

The specified technical result is achieved due to the fact that the known device for wastewater treatment with a device for introducing air, a feed pipe for the supply and removal of purified water, consisting of a sump, flotator, filter with granular loading, with the movement of water from top to bottom, a filter with sorption loading , with the movement of water from the bottom up, located in a cylindrical housing, equipped with pipes for emptying and removing sediment, further comprises a secondary sump, a tank of purified water and an ejector for feeding p agent, coupled with source water supply conduit, and wherein the granular sorption filters equipped on the top and bottom of the technological removable plates, allowing replacement load filters packed into soft cartridge from the reticular not corrosive material and fills the inner space of each filter; the flotator is divided by overflow partitions into four sections, and the bottom of the first two sections is communicated with a device for introducing air in the form of perforated pipes, and the last section has an overflow hole connected to a pipeline supplying water to the lower part of the secondary sump located between the outer surface of the sump wall and the wall of the housing of the cleaning device, while the sump located in the center of the cleaning device has a cylindrical shape and a conical bottom, and the bottom of the secondary sump is arranged with a slope from the center to the periphery and connected through an overflow hole with a grain filter; the cylindrical body of the cleaning device is made of a light and durable material not susceptible to aggressive action, for example fiberglass, is equipped with partitions located between the device body and the sump, which add rigidity to the structure of the cleaning device, which have overflow openings for gravity to pass through the water to be drilled sequentially spirals, starting from the sump, from where it enters the bottom of the first section of the flotator, from the last section of the flotator to the secondary first sump, then - on top of the filter with granular media, then, passing under the baffle separating the filters of the filter rises with adsorption loading to overflow, through which enters the container the purified water.

A reagent (barium chloride and calcium hydroxide) is fed into the feed water supply pipeline using an ejector and mixed with the feed water due to the turbulence of the flow. The sump has a conical bottom for collecting and discharging sludge, it has a water supply pipe to the bottom of the first section of the flotator.

In a four-section flotator, partitions are provided for the movement of wastewater in the necessary direction, as well as dividing it into flotation zones (the first three sections) and sedimentation (fourth section). In the fourth section - the settling zone - there is a pipeline for supplying water to the secondary sump. At the bottom of the flotator, in the flotation zone, air is supplied through perforated tubes attached to the compressor.

A secondary sump, the bottom of which has a slope from the center to the periphery, is located between the outer part of the sump wall and the inner part of the casing wall of the cleaning device. The sumps are equipped with trays for collecting purified water located along their perimeter.

The device contains two filters with different loading: a filter with granular loading, with water moving from top to bottom, a filter with sorption loading, with water moving from bottom to top. The filter load is placed in the device in a soft cartridge to completely fill the space, the cartridges are made in the form of nets of non-corrosive material (stainless steel, plastic, etc.). Technological removable plates are located in the upper and lower parts of the filters, which allow replacing the filter load, preventing the ascent of the load and contributing to a better distribution of the treated water.

The purified water tank is equipped with a purified water outlet pipe located in the upper part of the housing.

The wastewater treatment device is equipped with sediment discharge pipes located in its lower part and has a cylindrical shape made of fiberglass, which is the lightest, most durable and resistant to aggressive material.

The advantage of the proposed device is an increase in structural rigidity and reliability due to a single housing and partitions. The partitions are actually stiffeners between the body of the device and the sump. Another advantage is the four-section flotator, which has greater efficiency.

The scheme of the device for wastewater treatment is shown in the drawings:

in FIG. 1 - top view (AA section), the following notation is adopted: 1 - device housing, 2 - sump, 3 - flotator, 4 - secondary sump, 5 - grain filter, 6 - sorption filter, 7 - purified water tank, 9 - partition flotator, 10 - prefabricated sump tray, 11 - feed water supply pipe, 12 - emptying and sediment discharge flotator nozzle, 13 - removable granular filter distribution plate, 19 - emptying and sludge discharge tank for treated water, 20 - flotator collecting tray;

in FIG. 2 - view along the outer rim: 3 - flotator, 4 - secondary sump, 5 - grain filter, 6 - sorption filter, 7 - purified water tank, 9 - flotator baffle, 10 - prefabricated sump tray, 13 - removable grain filter distribution plate , 14 - removable filter cover, 20 - prefabricated flotator tray;

in FIG. 3 - section A-A, the following notation is adopted: 1 - device housing, 2 - sedimentation tank, 4 - secondary sedimentation tank, 10 - collecting tank of the sedimentation tank, 11 - feed water supply pipe, 12 - flotation tank discharge and drainage outlet pipe; 18 - pipe discharge and drain sediment sediment;

in FIG. 4 - section BB, the following notation is accepted: 1 - device housing, 2 - sump, 3 - flotator, 4 - secondary sump, 5 - grain filter, 6 - sorption filter, 7 - purified water tank, 8 - purified water outlet pipe, 15 - pipe for emptying the granular filter, 16 - pipe for emptying the sorption filter, 17 - filter baffle, 18 - pipe for emptying and discharging sludge sediment; 19 - pipe discharge and drainage sediment capacity of purified water.

The wastewater treatment device consists of sequentially arranged in a spiral: a settling tank 2, a flotator 3, a secondary settling tank 4, a granular filter 5, a sorption filter 6, a purified water tank 7 located under a single cylindrical body of the device 1.

The sump 2 and the secondary sump 4 are equipped with prefabricated trays of the sump 10 and pipes for emptying and discharging the sediment of the sump 18.

The flotator 3 is divided by the walls of the flotator 9 into four sections, which have pipes for emptying and draining sediment flotator 12.

The device contains two filters with different loading: a granular filter 5 and a sorption filter 6, separated by a filter baffle 17. The granular filter 5 has a removable distribution plate of the granular filter 13. The filters have removable filter covers 14 to hold the filter load. In the lower part of the granular filter 5 and sorption filter 6 are pipes for emptying. The sorption filter 6 is connected to the tank of purified water 7, which is equipped with a pipe for drainage of purified water 8.

The device operates as follows.

Purified wastewater through the feed water supply pipe 11 is supplied to the sump 2, where the sedimentation of suspended solids. From the sump 2, the wastewater through the collection tray of the sump 10 enters the flotator 3, where coarse and finely dispersed dissolved substances in the wastewater are captured by air bubbles and carried to its surface, forming a foam, which is collected manually. In flotator 3, the concentration of BOD, COD is also reduced. Through the collecting tray of the flotator 20, the flotated water is directed to the secondary sump 4. Using the collecting tray of the sump 10 arranged along the perimeter of the secondary sump 4, the purified water flows to the grain filter 5, where the water is distributed by a removable distribution plate of the grain filter 13, passes through a removable filter cover 14 from top to bottom, then, passing under the partition of the filters 17, it enters the sorption filter 6. In the sorption filter 6, the waste water rises up to the overflow hole connecting the sorption a filter 6 with a tank of purified water 7, from where the purified water is discharged through the pipe outlet of the purified water 8.

In the grain filter, there is a decrease in the concentrations of BOD, COD, SAS and suspended solids. In the sorption filter, there is a decrease in the concentrations of BOD, COD, SAS, suspended solids, as well as chromium ions, chlorides and sulfates.

Through the discharge pipe and drainage sediment of the flotator 12, the discharge pipe and drainage sediment of the sump 18, the discharge pipe of the granular filter 15, the discharge pipe of the sorption filter 16 and the discharge pipe and drainage of the sludge of the treated water tank 19 removes sediment falling to the bottom, and also empties the device for cleaning if necessary.

The claimed invention allows a rational and effective treatment of wastewater from chromium ions, chlorides, sulfates, suspended solids, surfactants, BOD and COD due to the separate sequential operation of the treatment units, simplicity of design, technological maintenance and mobility.

Information sources

1. Patent for invention RU 2537611, IPC C02F 9/14, C02F 3/30, C02F 1/44, C02F 103/20. Installation of wastewater treatment / Yu.A. Trukhin, B.V. Vasiliev et al. Publ. 01/10/2015

2. Patent for utility model RU 155231, IPC C02F 9/08, C02F 1/24, C02F 1/28, C02F 1/40. Wastewater treatment plant. / Strelkov A.K. and other publ. 09/27/2015 g.

Claims (1)

A device for wastewater treatment with an air inlet, a source and purified water discharge pipe, consisting of a sump, a flotator, a filter with granular loading, with a water movement from top to bottom, a filter with sorption loading, with water moving from bottom to top, located in a cylindrical case, equipped with pipes for emptying and removal of sediment, characterized in that it further comprises a secondary sump, a tank of purified water and an ejector for supplying a reagent connected to the supply pipe ref one water, while the granular and sorption filters are equipped in the upper and lower parts with technological removable plates, which allow replacing the filter load, packed in a soft mesh cartridge made of non-corrosive material and filling the inner space of each filter; the flotator is divided by overflow partitions into four sections, and the bottom of the first two sections is communicated with a device for introducing air in the form of perforated pipes, and the last section has an overflow hole connected to a pipeline supplying water to the lower part of the secondary sump located between the outer surface of the sump wall and the wall of the housing of the cleaning device, while the sump located in the center of the cleaning device has a cylindrical shape and a conical bottom, and the bottom of the secondary sump is arranged with a slope from the center to the periphery and connected through an overflow hole with a grain filter; the cylindrical body of the cleaning device is made of a light and durable material not susceptible to aggressive action, for example fiberglass, is equipped with partitions located between the device body and the primary settler, which add rigidity to the design of the cleaning device, which have overflow openings for the flow of purified water in the corresponding direction by gravity sequentially in a spiral, starting from the sump, from where it enters the bottom of the first section of the flotator, from the last section of the flo Ator - the secondary settling tank, then - on top of the filter with granular media, then, passing under the baffle separating the filters of the filter rises with adsorption loading to overflow, through which enters the container the purified water.

Images