SU1703620A1 - Installation for purification of waste water - Google Patents

Abstract

The invention relates to devices for the treatment of wastewater from mechanical impurities and can be used for the treatment of domestic and industrial wastewater. The purpose of the invention is to improve the quality of cleaning. The wastewater treatment plant comprises a housing with pipelines for supplying raw water and discharging purified water, a collection of organic impurities, a means for removing organic impurities, and a sludge collector. The source water supply pipeline is provided with a carbon dioxide dissolution chamber. A vacuum thickener of organic impurities is located above the body. The sediment accumulator is made in the form of a tank divided by a vertical wall into two compartments, equipped with vibrators installed in horizontal rows along the height of the tank, and a valve hinged on the upper edge of the vertical wall. Efficiency is achieved through the integrated use of a tank, the upper part of which performs the function of the primary settling tank, and the lower part - the sand trap. The presence of a two-chamber sand accumulator and a valve allows the sludge to be unloaded without disturbing the operating conditions of the sand trap and sump, which improves the quality, simplifies the design and reduces the size of the tanks. 1 il. yo

Description

The invention relates to a device for the treatment of wastewater from mechanical impurities and can be used in the treatment of domestic and industrial wastewater.

The purpose of the invention is to improve the quality of cleaning.

The drawing shows the installation, vertical, shallow section.

The wastewater treatment plant comprises a housing 1 with a source water supply pipeline 2, in the lower part of which a chamber 3 of a carbon dioxide gas distributor is installed, connected to the outlet 4 of its supply. In the upper part of the housing 1 there is a means for removing organic impurities, made in the form of

perforated pipe 5, connected by pipe 6 and pump 7 to the upper flotation zone of housing 1. A pipeline 8 for supplying compressed air or carbon dioxide for blowing off foam adjoins the upper part of the housing wall, perforated. The condensed organic impurities are discharged through a collector 9 and a pipe 10 connected to a vacuum thickener 11 organic impurities located above the casing, having a branch pipe 12. In the middle part of the casing from the side opposite to the source water supply line 2, connected by pipe 14 with a vacuum thickener 11. At the bottom

Vj

O CO O U O O

the hull is equipped with a sediment accumulator, vy; ogmony and vndy capacity 15, separated by L Cp; i-, a / ibi ofi wall 16 on the za compartment 17 and 10, equipped with vibrators 19, mounted:;. and horizontal rows of tank height, and a valve 20 hinged on the upper edge of the vertical wall 16. On the branch pipes

21 of the compartments 17 and 18 are regulators

22 consumption and connections 23 for supplying disinfecting components. The bottom conic part 21 of the housing 1 is supplied with vibrators 25 on the side of the inlet water supply side. In the upper part of the housing 1 there is a branch pipe 26 for discharging the deasprovenic gas from the drain. In order to reduce the flow rate of waste soda in the housing, a dispensing chamber 28 is located between the inlet slot 27 and the coarse-rock 2 supply of source water.

The plant operates as follows: The waste water in the dissolving chamber 3 is saturated with carbon dioxide discharged through the nozzle 4. Sewage water saturated with dissolved carbon dioxide, the solubility of which is more than 40 times the air solubility of the air, which causes salinity to be reduced by the order of energy consumption. for flotation, enters the tank in the middle third of its height at low speed, where the process is developed as follows. Due to the decrease in pressure, small bubbles of carbon dioxide are released, which, after floating up, carry up suspended organic particles, and in this part a deep flotation process is carried out. Inorganic impurities, the density of which is almost twice the density of water, are separated from organic impurities by c-: er and in free fall under the village, - G.: most of the gravitational forces are moved down in the aquatic environment, due to which a complex process of flotation and separation of the sand of the inlet tank, which makes it possible to halve the size of the reservoir in comparison with the size of the sump and sand trap. To reduce the rate of wastewater entering the reservoir between the inlet slot 27 and the supply pipe 2, a dispensing chamber 28 can be arranged. Thus, in the reservoir organic impurities and sand are separated - the first ones float, and the second, heavier, which, for this reason, cannot be carried away by gas bubbles upward, fall, forming two wedges with a starting area at the opening 27. With the inclined arrangement of the bottom part 24 of the housing 1, the sand slides by gravity. For

the tanks, the large productive slope of the bottom part 24 is reduced and, in order to carry out an effective process of sliding the sand downwards, it is supplied in and

Ratios 25. Due to this, the waste water at the same time releases organic and inorganic admixtures, and discharge clarified waste water through pipeline 13 for further processing,

0 processing, the pipeline is located in the direction of the inlet 27. At this stage, through the throat it enters one of the compartments 17 or 18 of the sludge accumulator, and to completely fill the entire tank 15,

5, the vibrators 19 of the upper row are turned on orally.

After filling the chamber with the sand from the top, it is separated from the reservoir by the transfer valve 20, while simultaneously opening

In addition, the entrance to the adjacent compartment of the sediment accumulator, and the process continues without adversely affecting the operation of the entire installation, unlike the existing ones during the periodical removal of sand from the sand trap, the settling modes are disturbed and the cleaning quality is reduced. After the accumulator accumulator compartment, for example, compartment 17. is separated from housing 1 by valve 20. vibrators 19 are turned on

0 of the bottom row of this compartment, as a result of which the sand is transformed into an easily movable flowl without diluting it with water, which allows reducing the moisture content of the removed sand and drastically simplifying the equipment scheme, because without any additional elements, sand in the form of float due to vibration through the pipe 21 with the flow adjuster 22 is removed from the tank by known vehicles, with the sand

0 is preliminarily decontaminated by supplying the respective components to the container or pipe 21 or by radiation exposure.

In the upper part to prevent

5, foam is accumulated through line 8, a compressed gas is injected, which blows the foam wetted by the water in the collector 9. Alternatively, water is sprayed by conduit 5 above the main surface of the tank, the solution

0 Foam, or both foam destruction methods are used together.

From collector 9, the condensed foam is led through conduit 10 directly to the processing facilities, for example, to 5 metans (not shown), or to a vacuum thickener 11 above, operating according to the following scheme. Due to a further decrease in pressure, carbon dioxide and other gases are deaerated not only from free water, but also from water contained in the internal structure of combined organic impurities. As a result, their density decreases sharply, which makes it possible to create three zones in the vacuum thickener of the sediment 11 — in the first, lower ones. particles float up in water, as in well-known floaters, in the second (intermediate) they are delayed and they accumulate to the stage of direct interaction of particles with each other, due to which Archimedean silts are used and the lower layers in water are pushed out of the water . and upper layers, which are further retracted for further processing according to one of the known schemes. Therefore, in a vacuum thickener, the dewatering process is carried out in three stages — initially moving towards the surface layers (the first thickening stage), then the particles are compacted to direct contact between themselves (the second compacting stage), for which the water level in the thickener is must be below the reversible wall using the regulator 3. levels, finally, the supraparticles in the layer are pushed out of the water and from their pores, the remains of free outside particles of water pollution under the action of gravity flow down.

The economic effect is associated with the integrated use of the tank at the same time for flotation, and for separating inorganic impurities, which doubles the capacity and its cost with a one-time increase in the quality of cleaning, including by separating the tank from g sand accumulators with a peg valve. 5Fore mule invented and.

Sewage treatment plant, comprising a housing with pipelines for supplying raw water and discharging purified water, collection of organic impurities, means

0 to remove organic impurities and a sediment accumulator, characterized in that, in order to improve the quality of purification, the source water supply pipeline is provided with a carbon dioxide dissolution chamber.

5 The installation is equipped with a vacuum organic thickener placed above the case, having a branch pipe and connected by pipelines with a collection of organic impurities and a pipe of drainage of clarified water. by means of a pump, a print sediment drive is made in the form of a tank, divided by a vertical wall into two compartments, equipped with horizontal vibrators

0 rows of the height of the tank, and a valve hinge mounted on the upper edge of the vertical wall.

one

Claims (1)

Claim A wastewater treatment plant, comprising a body with pipelines for guiding the source water and drainage of purified water, a collection of organic impurities, a means for removing organic impurities and a sludge accumulator, characterized in that, in order to improve the quality of treatment, the feed water supply pipe is provided with a carbon dioxide dissolution chamber gas, the installation is equipped with a vacuum thickener of organic impurities located above the casing, having a branch pipe and connected by pipelines to a collection of organic impurities and pipes clarified water drain, the means for removing organic impurities is made in the form of a perforated pipe located in the upper part of the casing, connected to the flotation zone of the installation by means of a pump, while the sediment accumulator is made in the form of a tank divided by a vertical wall into two compartments equipped with vibrators installed horizontal in rows along the height of the tank, and a valve pivotally mounted on the upper edge of the vertical wall.