RU175286U1 - Device for deep biological wastewater treatment - Google Patents

Abstract

The utility model relates to the field of wastewater treatment, namely to local wastewater treatment plants, and can be used to treat wastewater from a single cottage or group of cottages, in the absence of a centralized sewage system. The technical result of the patented solution is to increase the degree of purification of domestic wastewater. The technical result is achieved due to the design of the device, which contains a housing closed by a lid, under which an instrument compartment with a compressor is installed, the housing is divided by a vertical partition with an overflow opening into an aerotank and a section divided by a horizontal partition with an overflow opening into a receiving chamber with an inlet under which a sludge stabilization chamber and anaerobic sump separated from each other by a vertical partition with an overflow hole are installed, an aero is installed in the receiving chamber or, in the anaerobic sump, a recirculation airlift for feeding the sludge from the anaerobic sump into the receiving chamber for enriching it with oxygen, a biofilter with a ruff is installed in the aeration tank, which communicates with the clean water tank and is capable of purging, a degasser to remove biofilm from the aeration tank to the receiving chamber, purge means for creating a circular motion of the fluid, connected to the compressor, and a circulating airlift located at the bottom.

Description

The utility model relates to the field of wastewater treatment, namely to local wastewater treatment plants, and can be used to treat wastewater from a single cottage or group of cottages, in the absence of a centralized sewage system.

The following solutions are known in the art.

So, from the description of the patent of the Russian Federation No. 108443 (published on September 20, 2011), a wastewater treatment station is known which comprises a housing with a pre-aerator, primary settler, activated sludge regenerator and aeration tank, in which a secondary settler is installed. The pre-aerator also has means for introducing wastewater and air inlet, respectively; aeration tank also has means for discharging purified water and air inlet, respectively. The pre-aerator and the primary sump are interconnected by a mechanical cleaning grate. An airlift is installed between the secondary sump and the activated sludge regenerator. Secondary sump - a device for separating flakes of activated sludge and other suspended solids from treated water contains a vertically mounted tank. A filtering unit having an upper and lower grating and, accordingly, a hard filling biofuel.

The closest analogue to the patented solution is a device for effective wastewater treatment, containing, like the patented, a housing divided into three chambers: a receiving chamber, an anaerobic sump and an aeration tank with a damper, separated from the receiving chamber and from the anaerobic sump by a partition, a sealed instrument compartment with a compressor and a control unit, while in the receiving chamber a hole is made for the entry of effluents from the receiving chamber into the anaerobic sump and an aerator is placed, located in the anaerobic sump coarse bubble aerator, recirculation airlift for supplying sludge from the anaerobic sump to the receiving chamber, as well as in the anaerobic sump, a hole is made for communicating with the aeration tank, which contains a biofilm remover and means for removing water from the device (RF patent No. 2455239, published on July 10, 2012 )

The disadvantages of the known device are the insufficient degree of water purification due to the lack of bacteria that are washed through the slot in the bottom of the partition, and the fouling of the place through which the purified water is discharged, because of the possible washing out of the crude suspension particles, clogging of the recirculation pump with large sewages, as well as the presence of a bubble dispenser for the removal of purified water makes it difficult for purified water to exit the device, which leads to flooding of the station and leaching of activated sludge.

In addition, the location of the instrument compartment in the center of the neck makes it difficult to service the device.

The technical problem to which the patented utility model is aimed is to increase the degree of treatment of domestic wastewater.

The technical result of the patented solution is to increase the degree of purification of domestic wastewater.

The technical result is achieved due to the design of the device for deep wastewater treatment, which contains a housing closed by a lid, under which an instrument compartment with a compressor is installed, the housing is divided by a vertical partition with an overflow opening into an aerotank and a section divided by a horizontal partition with an overflow opening into a receiving chamber with an inlet a hole under which the sludge stabilization chamber and anaerobic sump separated from each other by a vertical partition with an overflow hole are placed, at an aerator is installed in the removable chamber, a recirculation airlift for supplying sludge from the anaerobic sump to the receiving chamber for enriching it with oxygen is installed in the anaerobic sump, a biofilter with a ruff is installed in the aeration tank, which communicates with a clean water tank and is capable of purging, a degasser for removing biofilm from the aeration tank a receiving chamber, a purge means for creating a circular motion of the fluid, connected to the compressor, and a circulating airlift located at the bottom.

Thus, as shown by experimental tests, through the use of the proposed device increases the efficiency of wastewater treatment up to 98%.

In particular, the housing may be cylindrical in shape and closed with a square lid.

Also, the case can be made of polypropylene, which is highly resistant to high and low temperatures (from -50 ° C to + 50 ° C) and the effects of acids and alkalis, which allows you to increase the warranty of the case up to 50 years.

As the tests showed, the preservation of a greater number of activated sludge bacteria in the sludge stabilization chamber and the anaerobic compartment, and, consequently, the best effect when cleaning wastewater, is achieved with the following ratio of volumes of aeration tank, receiving chamber, sludge stabilization chamber and anaerobic sump: 40%, 35 %, 10% and 15%, respectively.

Further, the solution is illustrated by reference to the figure, which shows a diagram of a device for deep wastewater treatment, which consists of a housing 1, closed by a cover 2, in which a sealed instrument compartment 3 is installed, in which there is a compressor 4 and a control unit 5 of the device. Also, an air distribution unit (not shown) with nozzles (plastic or brass) is attached to the compressor 4. The housing 1 by means of a sealed partition 6 with a hole 7 is divided into aeration tank 8 and a section divided by a horizontal partition 9 with a hole 10, into a receiving chamber 11 with an inlet (pipe) 12. Under the receiving chamber there is a sludge stabilization chamber 13 and an anaerobic sump 14, separated from each other by a vertical partition 15. On the side wall of the receiving chamber 11 there is a finely bubble aerator 16. A recirculation airlift 17 with turbo-blowing (not shown) is installed in the anaerobic sump 14. In the aerotank 9, a biofilter 18 with a ruff and a purge 19 is installed, communicating with a clean (purified) water tank 20, a degasser 21, a purge means 22 connected to the compressor 4 and a circulation airlift 23. The purified water from the biofilter 18 is discharged by an electric pump 24.

The operation of the device is as follows.

Sewage through the inlet pipe 12 enters the receiving chamber 11, from which, through a special overflow hole 10 in the horizontal partition, enter the sludge stabilization chamber 13, in which the dead sludge settles to the bottom, and purer water flows over the partition 15 into an anaerobic sump 14, in which through the overflow hole 8 (preferably, the diameter of the hole should be 110 mm and the height of the hole from the bottom of the device is 400 mm) in the sealed partition 6, the purified water flows into the aeration tank 8. Merth first anaerobic sludge from the settling tank 14 via recirculating airlift turboproduvkoy 17 rises to a height, for example, 1700 mm, for further enrichment with oxygen. At the same time, in order to prevent clogging of the recirculation airlift, it is advisable to use a pipe with a diameter of 40 mm and a turbo purge consisting of a pipe with a diameter of 20 mm and air supply to it using a hose. Getting into the aeration tank 8, the purified water flows upward, where part of it goes into the biofilter 18 with a ruff and a purge 19. Through the hole in the biofilter, the purified water rises through the connecting branch in the upper part of the biofilter and flows into the tank of clean water 20. In the biofilter additional cleaning of the water occurs with the ruff and purge (activated sludge bacteria accumulate on the ruff, which purify the water and prevent the under-purification of suspended particles from leaching). Thus, the place where clean water will be discharged will not be silted up.

Next, from the tank of clean water 20 by an electric pump 24, purified water is discharged through a pipe from the device.

In addition, in the aeration tank, the degasser 21 collects the untreated biofilm and throws it back for processing with oxygen back to the receiving chamber 11 (the degasser also works by the principle of aerial lift). In the opposite from the degasser 21 corner of the aeration tank, a purge 22 operates, which creates a circular motion of the liquid for driving into the biofilm degasser. At the bottom of the aeration tank, a circulating airlift 23 is installed, which throws settled (dead) sludge for oxygen enrichment into the receiving chamber 11 for processing.

In the basic version, a clean water tank 20 is included in the station kit.

The station case can have either a cylindrical or rectangular case. The thickness of the station body varies from 8 to 80 mm, depending on the volume of the station.

When selecting a gravity installation, the outlet output is mounted at the factory. When choosing forced drainage, purified water enters a special tank using a submersible pump and a discharge line installed during installation.

Thus, the claimed device allows to increase the degree of wastewater treatment.

Claims (4)

1. Device for deep wastewater treatment, characterized in that it contains a housing closed by a lid, under which an instrument compartment with a compressor is installed, the housing is divided by a vertical partition with an overflow opening into an aerotank and a section divided by a horizontal partition with an overflow opening into a receiving chamber with an inlet , under which a sludge stabilization chamber and anaerobic sump separated by a vertical partition with an overflow hole are placed, an aerator is installed in the receiving chamber, in anaer a different settling tank — a recirculation airlift for supplying sludge from the anaerobic settling tank to the receiving chamber for enriching it with oxygen, a biofilter with a brush connected to a tank of clean water and made with the possibility of purging, a degasser to remove biofilm from the aerotank to the receiving chamber, a purging means for creating a circular motion of the fluid, connected to the compressor, and a circulating airlift located at the bottom. 2. The device according to p. 1, characterized in that the housing is cylindrical and closed with a square cover. 3. The device according to p. 1, characterized in that the housing is made of polypropylene. 4. The device according to p. 1, characterized in that the ratio of the volumes of the aerotank, the receiving chamber, the stabilization chamber of the sludge and the anaerobic sump are 40%, 35%, 10% and 15%, respectively.

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