RU212941U1 - Waste water treatment plant - Google Patents

Abstract

The utility model relates to the field of domestic wastewater treatment, in particular to a treatment plant - a biological treatment plant, and is intended for comprehensive treatment of domestic wastewater.

The objective of the utility model is to create a plant for wastewater treatment of a biological treatment plant, which has both high strength characteristics and increased ease of operation due to its guaranteed output to the operating mode.

The installation for the treatment of domestic wastewater in the general case of execution contains a horizontally oriented housing made of polymeric material with inlet and outlet nozzles, made of one-piece cast with a high neck over the entire width of the housing, and common stiffeners on the side and upper surfaces of the housing and the neck, and also made in the entire width of the body of the inner flask, the side walls of which are inscribed in the ribbed contour of the side walls of the body and dividing the internal space of the body into three sections: the receiving chamber, the biochemical purification chamber and the outlet chamber, and the walls of the flask on the side of the receiving chamber and on the side of the outlet chamber are made with the possibility overflow of drains through them, while according to the utility model, the inner flask divides the internal space of the body into three sections due to the fact that the opposite walls of the flask located across the body form a gap not exceeding 15 mm with the side walls of the body, and the bottom of the flask is separated from hull bottom no more than n and 20 mm. The production of the installation and the assembly of its parts are carried out in the factory, on modern equipment, by the rotational molding method. Through the neck, the necessary maintenance of the installation is carried out, in particular, pumping out the activated sludge formed during its operation.

In particular cases, the installation additionally contains a cover, overflow holes on the walls of the inner flask on the side of the inlet and outlet chambers with filters for large fractions, the biochemical treatment chamber contains a floating load, an aerator, and another insert - a biofilter with an overflow hole from the outlet chamber and an opening under the outlet pipe of the installation; in the outlet chamber additionally contains an airlift connected by a hose to the receiving chamber. In addition, the installation additionally contains a spacer element fixed inside the neck in the form of a box with an air compressor installed in it in a protective casing, connected by hoses to an aerator in the biochemical purification chamber and to an airlift in the outlet chamber.

The described design of the installation ensures its access to the operating mode of domestic wastewater treatment within a guaranteed period of no more than 3 weeks, as well as high strength characteristics and ease of operation.

Description

The utility model relates to the field of domestic wastewater treatment, in particular to a treatment plant - a biological treatment plant, and is intended for comprehensive treatment of domestic wastewater.

The prior art patent of the Russian Federation No. 152745 for a utility model "Installation for wastewater treatment" according to the application No. 2014132198 dated 08/05/2014, IPC C02F 3/02, published 06/20/2015

The plant for domestic wastewater treatment comprises a vertical rectangular solid-cast polyethylene housing with an inlet outlet and an outlet pipe, an aeration chamber with overflow holes located inside the housing, as well as stiffening ribs made on the sides of the housing, while the aeration chamber is formed by a solid-cast hollow rectangular insert with triangular protrusions for its fixation in the reciprocal grooves of the vertical rectangular body. In particular, the insert divides the body into three chambers - an inlet, aeration and outlet chamber - a sump. When this aeration chamber contains a floating load and a cylindrical aerator in the holder; the outlet chamber contains another insert - a biofilter and an airlift, and on top in a protective casing - an air compressor that supplies air to the aerator and airlift through hoses. In addition, the housing is equipped with a hinged lid, on which stiffening ribs are made.

Also known is the patent of the Russian Federation No. 155237 for a utility model "Device for the treatment of domestic wastewater" according to application No. 2015103040 dated 01/30/2015, IPC C02F 3/00, published on 09/27/2015. This device contains a housing with inlet and outlet pipes and two necks, while the inner cavity of the body is divided by partitions with overflow holes into three chambers, and an air compressor is installed in the neck, connected to an aerator in the second chamber of the body and supporting the operation of an airlift installed in the third chamber, hydraulically connected to the first chamber, and the body is made with vertical on its long sides and horizontal on the ends of the ribs.

Also known is the patent of the Russian Federation No. 167039 for a utility model "Installation for wastewater treatment", application 2016106078 with pr. 2016.

The plant comprises a body made of polymeric material with inlet and outlet nozzles, a neck with a lid and stiffening ribs, as well as an internal flask with overflow holes made across the entire width of the body, the side walls of which are in close contact with the walls of the body, and the body is made of one-piece cast with a neck, has with it common stiffeners in the transverse and longitudinal directions.

The patent of the Russian Federation No. 191965 for a utility model "Installation for sewage treatment" according to the application No. 2019105415 dated February 26, 2019, IPC E03F 5/04, was adopted as a prototype; E03F 5/14; C02F 3/12, published 08/28/2019

This unit contains a body made of polymeric material with inlet and outlet nozzles, a neck with a lid and stiffeners made on the body and neck, an inner flask with overflow holes, the side walls of which are in close contact with the walls of the body, made of one-piece cast with a neck having common stiffeners with a body and made in the entire width of the body, the stiffening ribs of which have a transverse and longitudinal direction, and the neck is provided with a spacer element. The disadvantage is the lack of specific requirements for the degree of fit of the inner flask to the side walls and the bottom of the housing, which can lead to an increase in the period for the installation to enter the operating mode.

The objective of the claimed utility model is to create a wastewater treatment plant - a biological treatment plant, which has both high strength characteristics and increased ease of operation due to its guaranteed output to the operating mode.

The problem is solved due to the fact that the installation for the treatment of domestic wastewater contains a horizontally oriented body made of polymeric material with inlet and outlet pipes, made of one-piece with a vertically oriented neck across the entire width of the body, and common stiffeners on the side and upper surfaces of the body and the neck, as well as an inner flask made in the entire width of the body, the side walls of which are inscribed in the ribbed contour of the side walls of the body and dividing the internal space of the body into three sections: a receiving chamber, a biochemical purification chamber and an outlet chamber, and the walls of the flask from the side of the receiving chamber and from the side of the outlet the chambers are configured to overflow drains (holes, perforated areas, etc.) through them, while according to the utility model, the inner flask divides the internal space of the housing into three sections due to the fact that the opposite walls of the flask located across the housing form with side walls of the housing slot, not exceeding 15 mm, and the bottom of the flask is separated from the bottom of the body by no more than 20 mm.

When assembling the installation, the inner flask is installed into the body through the neck, which implies the presence of gaps between the walls of the flask and the body. Taking into account the properties of the polymer material from which the body, neck and flask are made, for example, from linear low-pressure polyethylene, it is possible to install the flask with the so-called interference - due to the elastic deformation of the wall material, which does not exclude the presence of gaps between the walls of the flask and the body on separate wall sections. At the same time, when the assembled installation is deepened into the ground, its walls will be affected by the forces of compression of the soil from the outside and, at the same time, the forces of bursting from the liquid pressure from the inside, which leads to compression of the walls of the flask and the body, thereby ensuring their sufficiently tight fit to each other in normal operation domestic wastewater treatment plants..

It was experimentally found that if the walls of the inner flask form a gap not exceeding 15 mm with the side walls of the housing, this, on the one hand, facilitates the assembly technology of the installation, and on the other hand, ensures normal operation when the assembled installation is buried in the ground due to compression of the walls of the flask and body.

It was also experimentally found that if the bottom of the flask is no more than 20 mm from the bottom of the body, domestic sewage clogs these slots with silt, as a rule, in 3 weeks, which ensures the practical formation of 3 sections inside the body, i.e. ensures that the unit enters the operating mode for cleaning within a guaranteed period of time - no more than 3 weeks.

Thus, due to the implementation of the installation for wastewater treatment, containing all these essential features, it is possible to increase the ease of assembly and operation of the installation due to its guaranteed output to the operating mode.

In the particular case of the installation for the treatment of domestic waste water, the neck is provided with a lid. This increases the stiffness of the neck, and also protects the installation from precipitation and prevents the spread of odor from it.

In a particular case of the installation for the treatment of domestic wastewater, the inner flask is attached to the one-piece body in the region of the neck by welding, which increases the strength of the neck and the installation as a whole.

In a particular case, the walls of the inner flask for the possibility of overflowing wastewater inside the installation are made from the side of the inlet and outlet chambers in the form of overflow holes with filters.

When effluents are poured from the receiving chamber into the biochemical treatment chamber inside the flask, the filter separates large solid fractions in the effluents from liquid effluents, and when they are poured from the biochemical treatment chamber into the outlet chamber, the filter breaks large organic fractions of effluents into smaller ones, contributing to their further processing .

In a particular case of a domestic wastewater treatment plant, the neck is provided with a spacer element, for example, in the form of a pipe, a flat grate, etc., which ensures uniform distribution of external loads in the neck, eliminates deformation of the installation and further increases the strength of the structure as a whole. In particular, the spacer element is made in the form of a box, fixed inside the neck by means of retaining supports, protecting it from displacement and falling. The specified execution of the spacer element allows you to place electrical equipment in it.

In a particular case of a domestic wastewater treatment plant, the internal biochemical treatment chamber contains a floating load, an aerator and another insert - a biofilter. Floating loading increases the number of microorganisms in the chamber; aerator provides saturation of liquid wastewater with oxygen to maintain favorable conditions for aerobic microorganisms, which increases the speed and efficiency of wastewater treatment; the biofilter provides additional purification and clarification of wastewater due to the filter load.

In the particular case of the installation for the treatment of domestic wastewater, the outlet chamber contains an airlift connected by a hose to the receiving chamber. With the help of an airlift, a mixture of water and sludge is pumped from the outlet chamber back to the receiving chamber for further continuous cleaning. These additions increase the efficiency of the installation.

In a particular case of installation, in a spacer element in the form of a box fixed inside the neck, an air compressor is installed in a protective casing, connected by hoses to an aerator in the biochemical treatment chamber and to an airlift in the outlet chamber, which ensures uninterrupted operation of the aeration system and activated sludge circulation, provided constant supply of electricity.

This provides convenient access through the neck for installation and maintenance of electrical equipment located in the box. If it is necessary to preserve the installation, the spacer element together with the electrical equipment can be easily dismantled and, subsequently, also installed in the neck of the structure. The advantage of this design is to ensure the safety of the installation. In case of emergency flooding of the station, the expansion element with electrical equipment always remains above the flood level, which ensures the safety of electrical equipment and current-carrying paths.

In a particular case of the installation for the treatment of domestic wastewater, the body and neck of the installation are made of high-pressure linear low-density polyethylene, which gives the installation additional strength, making it possible to use it at low and elevated temperatures.

The claimed utility model - installation for the treatment of domestic wastewater is illustrated by the following drawings.

On FIG. 1 shows a general view of a wastewater treatment plant in the general case of execution: a) a longitudinal vertical section; b) fragment of top view;

in FIG. 2 shows a general sectional view of the wastewater treatment plant in all particular cases.

The claimed installation for the treatment of domestic wastewater in the general case of execution (Fig. 1) contains a horizontally oriented body 1 made of polymer material with inlet 2 and outlet 3 nozzles, made of one-piece with a vertically oriented neck 4 across the entire width of the body 1, and common stiffeners 5 on the lateral and upper surfaces of the housing 1 and the neck 4, as well as an internal flask 6 made in the entire width of the housing 1, the side walls of which are inscribed in the ribbed contour of the side walls of the housing 1 and divide the internal space of the housing 1 into three sections: the receiving chamber 7, the biochemical chamber cleaning 8 and the outlet chamber 9, and the walls of the flask 6 from the side of the receiving chamber 7 and from the side of the outlet chamber 9 are made with the possibility of overflowing drains through them (in particular, in the form of holes 10 and 11, perforated areas, etc.), in this case, the opposite walls 12 of the flask 6, located across the body 1, form a gap with its side walls that does not exceed 15 mm (Fig. 1b), and the bottom about 13 of the flask 6 is separated from the bottom of the housing 1 at a distance of no more than 20 mm (Fig. 1a).

The claimed installation for the treatment of domestic wastewater in particular cases of execution, in addition to the elements specified for the general case of execution, additionally contains the following structural elements (Fig. 2): a cover 14, an overflow hole 10 with a solids filter 15 on the wall of the inner flask 6 from the side receiving chamber 7, an overflow hole 11 with a filter of organic fractions 16 on the wall of the inner flask 6 from the side of the outlet chamber 9, in the biochemical purification chamber 8 it contains a floating load 17, an aerator 18, and also another insert - a biofilter 19 with an overflow hole 20 into it from the outlet chamber 9 and the hole 21 for the outlet pipe 3 of the installation; the outlet chamber 9 additionally contains an airlift 22 connected by a hose to the receiving chamber 7 (not shown). In addition, the installation additionally comprises a spacer element fixed inside the neck 4 in the form of a box 23 with an air compressor 24 installed in it in a protective casing, connected by hoses to an aerator 18 in the biochemical purification chamber 8 and to an airlift 22 in the outlet chamber 9 (not shown). The body 1 with the neck 4 is made of high pressure linear low-density polyethylene.

The production of the installation and the assembly of its parts are carried out in the factory, on modern equipment, by the rotational molding method.

The claimed installation for the treatment of domestic wastewater in the general case of execution works as follows (see Fig. 1).

After installation of the installation, its backfilling with earth at a given depth and filling with sewage, the gaps between the walls 12 of the flask 6 and the side walls of the housing 1, not exceeding 15 mm, are compressed, ensuring normal operation.

Household sewage through a sewer pipeline (not shown) through the inlet pipe 2 of the housing 1 enters the receiving chamber 7 of the housing 1, where they ferment and separate into organic and inorganic parts and deposit heavy inorganic substances on the bottom in the form of a solid precipitate that cannot be decomposed . Further, the clarified effluents through the overflow hole 10 flow by gravity into the biochemical treatment chamber 8 of the inner flask 6, where, under the influence of aerobic microorganisms, intensive oxidation of effluents occurs due to the process of mineralization of dissolved organic substances. Further, by gravity through the overflow hole 11 of the flask 6, the wastewater enters the outlet chamber 9, in which the liquid to be purified is at rest and where activated sludge is deposited. After that, the purified water is discharged by gravity through the outlet pipe 3 of the housing 1 in the irrigation field, where the final purification of wastewater occurs due to natural filtration through the soil. At the same time, domestic wastewater clogs the gap between the bottom 13 of the flask 6 and the bottom of the body 1 with silt, which does not exceed 20 mm, as a rule, in 3 weeks, which ensures the practical formation of 3 sections inside the body, i.e. ensures that the unit enters the operating mode of cleaning within a guaranteed period of time - no more than 3 weeks. At the same time, the common stiffening ribs 5 on the side and upper surfaces of the body 1 and the neck 4 securely hold the unit in the ground and distribute external loads, which increases its strength. Through the neck 4, the installation is serviced, in particular, the activated sludge generated during its operation is pumped out.

The claimed installation for the treatment of domestic wastewater, using all additional structural elements in it, in particular cases of execution, works as a whole, as in the general case of execution, taking into account the following additions and features (see Fig. 2).

Household effluents from the receiving chamber 7 of the housing 1 flow by gravity into the biochemical treatment chamber 8 of the inner flask 6 through the overflow hole 10 with a solids filter 15, which separates solid inorganic fractions from liquid effluents. Then, the effluents from the biochemical treatment chamber 8 of the inner flask 6 flow by gravity into the outlet chamber 9 through the overflow hole 11 with the organic fraction filter 16, which breaks the large organic fractions of the effluents into smaller ones, helping to improve their further processing.

A biofilm is formed on the floating load 17 in the biochemical treatment chamber 8, which significantly increases the number of microorganisms in the chamber and increases the speed and efficiency of wastewater treatment.

With the help of the aerator 18, installed in the biochemical treatment chamber 8, the wastewater is saturated with air oxygen, which ensures the vital activity of microorganisms and accelerates the process of mineralization of dissolved organic substances.

With the help of an airlift 22 in the outlet chamber 9, connected by a hose to the receiving chamber 7, the settled activated sludge is pumped into the receiving chamber 7 for further cleaning, providing a continuous closed cycle of operation, due to which deep purification of wastewater occurs.

Due to the presence in the chamber of biochemical purification 8 of another insert-biofilter 19, clarified water from the outlet chamber 9 flows through the overflow hole 20 into the biofilter 19, with a filter load in the form of polymer fillers in cartridges, where they are additionally cleaned and clarified, after which purified water through the hole 21 and the outlet pipe 3 are brought out.

At the same time, an additional spacer element in the form of a box 23 installed inside the neck 4 with an air compressor 24 installed in it in a protective casing ensures the operation of the aerator 18 in the biochemical purification chamber 8 and the airlift air circulation pump 22 in the outlet chamber 9. This provides convenient access for installation and maintenance of electrical equipment 24 located in the box 23 of the neck 4.

If it is necessary to preserve the installation, the spacer element 23, together with the electrical equipment 24, can be easily dismantled and, subsequently, also installed in the neck 4 of the structure. In case of emergency flooding of the station, the expansion element with electrical equipment always remains above the flood level, which ensures the safety of electrical equipment and current-carrying paths. The presence of a cover 14 that closes the neck 4 increases its rigidity, and also prevents the unit from getting inside precipitation and prevents the spread of odor during operation of the unit. Attaching the inner flask 6 to the body 1 with a neck 4 in the region of the neck 4 by means of welding increases the strength of the neck and the structure of the installation as a whole during its transportation and operation. Manufacture of body 1 with neck 4 of high-pressure linear low-density polyethylene gives additional strength to the installation, making it possible to use it at low and high temperatures.

Thus, the claimed installation for wastewater treatment has high strength characteristics, increased ease of use, and also provides a guaranteed output to its operating mode.

Claims (10)

1. Installation for the treatment of domestic wastewater, containing a horizontally oriented body made of polymeric material with inlet and outlet pipes, made of one-piece with a vertically oriented neck across the entire width of the body, and common stiffeners made on the side and upper surfaces of the body and the neck, as well as an inner flask made over the entire width of the housing, the side walls of which are inscribed in the ribbed contour of the side walls of the housing and dividing the internal space of the housing into three sections: a receiving chamber, a biochemical purification chamber and an outlet chamber, and the walls of the flask on the side of the receiving chamber and on the side of the outlet chamber are made with the possibility of overflowing drains through them, characterized in that the inner flask divides the internal space of the housing into three sections due to the fact that the opposite walls of the flask located across the housing form a gap not exceeding 15 mm with the side walls of the housing, and the bottom of the flask is separated from hull bottom no more than n and 20 mm. 2. Installation according to claim 1, characterized in that the neck is provided with a lid. 3. Installation according to claim 1, characterized in that the inner flask is attached to a one-piece molded body with a neck in the neck area by welding. 4. Installation according to claim 1, characterized in that the walls of the flask on the side of the receiving chamber and on the side of the outlet chamber are made in the form of overflow holes with filters. 5. Installation according to claim 1, characterized in that the neck is provided with a spacer element in the form of a box. 6. Installation according to claim. 1, characterized in that the internal chamber of biochemical treatment contains a floating load and an aerator. 7. Installation according to claim 1, characterized in that the internal chamber of biochemical treatment contains an additional insert - a biofilter with an overflow hole into it from the outlet chamber and a hole for the outlet pipe of the installation. 8. Installation according to claim. 1, characterized in that the outlet chamber contains an airlift connected by a hose to the receiving chamber. 9. Installation according to paragraphs. 6-8, characterized in that in the expansion element in the form of a box fixed inside the neck, an air compressor is installed in a protective casing, connected by hoses to an aerator in the biochemical purification chamber and to an airlift in the outlet chamber. 10. Installation according to claim 1, characterized in that the body and neck of the installation are made of high pressure linear low-density polyethylene.

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