RU2614954C1 - Biosorber for wastewater treatment - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: biosorber comprises bioreactor 1 with fluidized loading layer, water air oxygenation system, sewage pipeline 5 for waste supply to processing, pipelinet 6 for purified water discharge and a recycle flow pipeline with a circulation pump, an automated control unit and receiving and dispensing chamber 9 connected via metering pump 10 to coal camera-trap 11. Coal camera-trap 11 is connected to bioreactor 1 via the circulation pump. Bioreactor 1 is provided with a convex activated carbon reflector in the top.

EFFECT: invention allows to increase the degree of wastewater treatment while ensuring high reliability.

12 cl, 4 dwg

Description

The technical field to which the invention relates.

The invention relates to wastewater treatment systems, namely, biosorbers for wastewater treatment, including a bioreactor with a fluidized bed and a layer of filtering charge, a system for saturating water with oxygen by air, a sewage supply pipe for treatment, a purified water discharge pipe and a recycled flow pipe with circulation pump.

Biological loading is the basis of a biological filter, which is part of a bioreactor in which waste water is filtered through a biological loading coated with a biological film (biofilm) formed by colonies of microorganisms.

The level of technology.

A biosorber for wastewater treatment is known from the prior art, including a fluidized bed bioreactor, a system for saturating water with oxygen by air, a sewage supply pipe for treatment, a purified water drain pipe and a recirculated flow pipe with a circulation pump, see the description of the patent for invention No. 2064453 published on 07/27/1996.

This device is the closest in technical essence to the claimed utility model and is taken as a prototype for the proposed utility model.

The disadvantage of this device is the low degree of wastewater treatment, as well as the low reliability of the biosorber. This is due to the fact that:

- activated carbon (sorbent), which is the loading layer, is susceptible to colmatization (i.e. clogging, clogging, natural cementation), since a constant uniform upward flow of the medium is carried out in the bioreactor,

- activated carbon (sorbent), which is the loading layer, is washed out of the bioreactor chamber, and to capture it, it is necessary to install a filtration chamber with an additional granular charge on the periphery,

- the prototype is characterized by a large consumption of biofuel material.

Disclosure of the invention.

Based on this original observation, the present invention mainly aims to offer a biosorber for wastewater treatment, which allows at least smoothing at least one of the above disadvantages, namely, to provide an increase in the degree of wastewater treatment while ensuring high reliability, which is technical problem, the solution of which the present invention is directed.

To achieve this, the biosorber for wastewater treatment includes a bioreactor with a fluidized bed loading, a system of saturation of water with oxygen by air, a piping for supplying sewage to the treatment, a piping for treating treated water and a recirculated flow pipe with a circulation pump, while the biosorber includes a receiving a metering chamber connected through a metering pump to a chamber with a coal trap, which is connected to a bioreactor with a fluidized bed loading through a circulation pump, and bio orber includes biosorberom automated control unit, wherein the bioreactor is provided with a convex reflector of active carbon, installed in the upper part of the bioreactor, configured to provide a laminar liquid flow rising along the walls of a bioreactor.

Thanks to such advantageous characteristics, it becomes possible to provide accelerated loading regeneration, thanks to the presence of a trapped coal trap chamber, it becomes possible to precipitate fine particles of sorbent (coal dust) and suspended solids, and due to the presence of an automated biosorber control system, it becomes possible to control pumps and use various modes their work, which prevents the boot from getting dirty.

Due to the presence of a convex reflector of activated carbon (sorbent), it becomes possible to:

- organization of laminar upward movement of fluid along the walls of the bioreactor;

- increase the working height of the bioreactor due to the absence of a diffuser in the upper part of the column pipe of the reactor (as with analogues - a bell);

- retention of activated carbon (sorbent);

- fixation of the receiving neck.

Advantageously, the metering chamber comprises a coagulant container connected to a coagulant dispenser. Due to this advantageous characteristic, it is also possible to combine small dispersed particles into large aggregates, which leads to the formation of a mesh structure or causes the precipitation of a coagulate, a flocculent precipitate, which is easy to remove.

There is also a variant of the invention in which a convex reflector of activated carbon (sorbent) is made in the form of a cone. Thanks to this advantageous characteristic, it becomes possible to carry out a simple embodiment of manufacturing a reflector.

There is another variant of the invention, in which the dispenser for the coagulant is made in the form of a dosing peristaltic pump of the coagulant. Thanks to this advantageous characteristic, it becomes possible to perform a specific metering device in the form of a pump.

In addition, there is an embodiment of the invention in which an automated biosorber control module is connected to a coagulant sensor mounted on a coagulant container. Thanks to such an advantageous characteristic, it becomes possible to track the presence of a coagulant and, when used up, transmit signaling signals.

There is an embodiment of the invention in which the automated biosorber control module is connected to a metering pump. Thanks to this advantageous characteristic, it becomes possible to control the metering pump, periodically turn it on and off. Thus, it is possible to adjust the level of effluents in the bioreactor.

There is an embodiment of the invention in which the automated biosorber control module is connected to an air compressor of a water oxygen saturation system. Thanks to this advantageous characteristic, it becomes possible to control the operation of the air compressor of the oxygen saturation system of water with air

There is also an embodiment of the invention in which the automated biosorber control module is connected to a coagulant dispenser. Thanks to this advantageous characteristic, it becomes possible to control the amount of coagulant that is added to the effluent.

There is another possible embodiment of the invention in which the air compressor has a check valve to prevent water from entering. Thanks to this advantageous characteristic, it is possible to prevent water from entering the air compressor.

There is a possible embodiment of the invention in which the automated biosorber control module is connected to a wastewater level sensor located in a receiving and dosing chamber. Thanks to this advantageous characteristic, it becomes possible to monitor the level of wastewater in the receiving and dosing chamber. When the level goes beyond the set limits, you can turn on or turn off the corresponding pump to maintain the level of wastewater in the required limits.

There is also an embodiment of the invention in which the automated biosorber control module is connected to a signaling unit for the operation of pumps and emergency levels of treated water. Thanks to this advantageous characteristic, it becomes possible to signal about malfunctions in the operation of the pumps, as well as when the water level goes beyond the set critical limits.

There is also such an embodiment of the invention in which the automated biosorber control module is connected to the SMS notification subsystem, which signals the loss of power and restoration of power supply, the occurrence of a dosing and circulation pump accident.

Thanks to this advantageous characteristic, it becomes possible to produce SMS alerts in critical situations for a user, for example, in the event of a power outage and restoration, when a dosing and circulation pump accident occurs.

The set of essential features of the invention is unknown from the prior art for devices of similar purpose, which allows us to conclude that the criterion of "novelty" for the invention.

A brief description of the drawings.

Other distinguishing features and advantages of the invention clearly follow from the description below for illustration and not being restrictive, with reference to the accompanying drawings, in which:

- figure 1 schematically depicts the appearance of a biosorber for wastewater treatment, a view in partial section, according to the invention.

- figure 2 schematically depicts another appearance of a biosorber for wastewater treatment, a view in partial section, according to the invention.

- figure 3 schematically depicts a partial functional diagram of a biosorber for wastewater treatment, according to the invention.

- figure 4 schematically depicts the steps of the biosorber for wastewater treatment, according to the invention.

In figures 1-3 indicated:

1 - bioreactor,

2 - fluidized bed loading (sorbent),

3 - pump system of saturation of water with oxygen,

4 - compressor system of saturation of water with atmospheric oxygen,

5 - pipeline supply of wastewater for treatment,

6 - pipeline drainage of purified water,

7 - pipeline recycled stream,

8 - circulation pump

9 - receiving and dosing chamber,

10 - metering pump,

11 - camera trap made of coal,

12 - automated control module,

13 - capacity for coagulant,

14 - dispenser for coagulant,

15 is a convex reflector of activated carbon (sorbent),

16 - servo injector hydroaeration system,

17 - air intake

18 - ventilation

19 - wastewater level sensor,

20 - peristaltic metering pump,

21 - coagulant level sensor,

22 - filter intake of the coagulant.

According to figures 1-3, the biosorber for wastewater treatment includes a bioreactor 1 with a fluidized bed loading 2, a system of saturation of water with oxygen by air, including a pump of a system of saturation of water with oxygen 3, a compressor of a system of saturation of water with oxygen 4, a sewage treatment pipe 5, the purified water drain pipe 6 and the recirculated flow pipe 7 with the circulation pump 8. The biosorber includes a receiving and metering chamber 9 connected through a metering pump 10 to a trap chamber 11 of coal, which is connected to a fluidized bed bioreactor load through a circulating pump. The biosorber includes an automated biosorber control module 12. The metering chamber 9 comprises a coagulant container 13 connected to a coagulant dispenser 14.

The bioreactor 1 can be equipped with a convex reflector of activated carbon (sorbent) 15, mounted in the upper part of the bioreactor 1, configured to provide laminar upward movement of the liquid along the walls of the bioreactor 1. In this case, the convex reflector of activated carbon (sorbent) 15 can be made in the form of a cone .

The dispenser for the coagulant can be made in the form of a dosing peristaltic pump of the coagulant.

- figure 1 schematically depicts the appearance of a biosorber for wastewater treatment, a view in partial section, according to the invention.

The automated control module biosorber 12 can be connected to

- a coagulant sensor 22 mounted on a container for coagulant 13.

- metering pump 10.

- an air compressor 4 of a system for saturating water with atmospheric oxygen.

The automated control module biosorber 12 can be connected to a dispenser for coagulant 14.

The air compressor 4 may have a check valve to prevent water from entering. Not shown in the figures.

The automated control module biosorber 12 can be connected to a wastewater level sensor located in the receiving and dosing chamber.

The automated control module biosorber 12 can be connected to the signaling unit of the pumps and emergency levels of treated water. Not shown in the figures.

The automated biosorber control module can be connected to the SMS notification subsystem, which signals the loss of power and restoration of power, the occurrence of an accident of the metering and circulation pumps. Not shown in the figures.

The implementation of the invention.

The biosorber for wastewater treatment is used as follows. An example of the use of the invention is provided, which is descriptive and does not limit the application of the invention.

Stage A1. Wastewater through the sewage supply pipe for processing 5 is fed into the receiving and metering chamber 9, in which the flow is equalized, accumulated and sedimented before being fed into the biochemical reactor 1.

Stage A2. In the receiving and metering chamber 9, above the inlet pipe, a wastewater level sensor 19 and an emergency overflow hole are located.

Stage A3. In the lower part of the receiving and metering chamber, a metering pump 10 is located, which provides a batch feed of the drain to the biochemical reactor 1 in an automatic mode.

Stage A4. In the biochemical reactor 1 carry out the process of biosorption water purification through a fluidized bed of activated carbon (sorbent).

Stage A5. The processes of adsorption and regeneration of activated carbon (sorbent) provide a hydroaeration system. To do this, use the compressor of the water oxygen saturation system 4, which supplies air through the pump 3 of the water oxygen saturation system to the bioreactor 1.

Stage A6. The coal trap chamber 9 is equipped with a circulation pump 8 with a valve for throttling the flow, an air compressor 4 with a check valve to prevent water ingress, and a servo injector with a decompression valve for the hydraulic aerator path to eliminate airing of the pump circulation chamber. The operation of the circulation pump 8 and compressor 4 is carried out in automatic mode.

Stage A7. The output of purified water is carried out by displacing it from the reactor simultaneously with the supply of the next portion of contaminated runoff.

Stage A8. The automated control module provides the technological process of wastewater treatment, functional control of the operation of pumps and compressor 4, indication and alarm about the current state of the installation.

Stage A9. The control mode of the dosing pump and compressor is 4-cycle time with the following settings:

- dosing pump: cycle period - 30 minutes; duration of the on state - 6 minutes;

- compressor: cycle period - 10 min., on-state duration - 1 min.

The circulation pump is in continuous operation.

Stage A10. The automated control module is equipped with current sensors that determine (by the consumed current) the actual operation of the metering and circulation pumps. If, according to the instantaneous state, the metering pump must be switched on and the current consumption is not determined, the metering pump alarm is indicated and the corresponding signal lamp lights up. The method for determining the efficiency of the circulation pump is similar, with the difference that the status of its current sensor is monitored in a constant mode. The circulation pump alarm is indicated by another warning light. If for some reason the pump has resumed normal operation (the cabinet’s power did not turn off), the alarm goes into intermittent display mode. In this case, it is possible to acknowledge it by pressing the “Alarm reset” button.

The steps are exemplary and allow for permutation, addition, and their partial use.

Industrial applicability.

The proposed biosorber for wastewater treatment has a clear purpose, can be carried out by a specialist in practice and, when implemented, ensures the implementation of the declared purpose. The possibility of being implemented by a specialist in practice follows from the fact that for each feature included in the claims, based on the description, the material equivalent is known, which allows us to conclude that the criterion of "industrial applicability" for the invention is met, as well as the criterion of "completeness of description" for a useful models.

In accordance with the proposed invention, on behalf of the applicant Alta Group LLC, a prototype biosorber for wastewater treatment was manufactured, which was installed at the manufactured Alta Bio Max treatment plant.

The biosorber was characterized by the following parameters:

Electrical installation:

Mark of the circulation pump - Pedrollo ZXm 1A / 40;

Brand dosing pump - Karcher SDP7000;

The brand of air compressor is SECOH HL-100.

Compressor 4 was turned on once per hour for 3 minutes, which prevents the clogging of activated carbon. The dosing pump fed the stock to the biosorption reactor from the consumable part of the receiving chamber in portions of 500 l once every 30 minutes. Thus, each portion was processed in the reactor for 28 minutes.

The circulation pump created a fluidized bed of activated carbon, circulated the drain through activated carbon and the microfiltration unit (it worked continuously).

The peristaltic dosing pump dosed the coagulant in proportion to the volume of the incoming flow.

The pilot operation of this invention showed that this design provides:

- organization of laminar upward movement of fluid along the walls of the bioreactor;

- an increase in the working height of the bioreactor due to the absence of a diffuser in the upper part of the column pipe of the reactor (as with analogues, a bell);

- retention of activated carbon;

- reduction in overall dimensions of treatment facilities,

- increase the life of the bioreactor,

- increase the degree of wastewater treatment.

Thus, due to the implementation of the biosorber, which includes a receiving and dosing chamber connected through a metering pump to a chamber of a trapped coal trap, which is connected to a bioreactor with a fluidized bed loading through a circulation pump, moreover, the biosorber includes an automated biosorber control system, and the bioreactor equipped with a convex reflector of activated carbon mounted in the upper part of the bioreactor, configured to provide laminar upward movement of the liquid along the walls bioreactor and achieved a technical result, namely: increasing the degree of wastewater treatment while ensuring high reliability.

Additional technical result achieved:

- improving the ratio between surface area and the occupied volume of the biological load,

- increase corrosion resistance,

- an increase in the structural strength of the biological loading skeleton,

- improving the manufacturability of the assembly and maintenance of the biological load.

Thus, it is recommended to use the proposed biosorber for wastewater treatment for installation at deep biochemical and biological wastewater treatment plants for wastewater treatment from residential complexes, hotels, boarding houses, sanatoriums, complexes of residential buildings, cottage villages, microdistricts, settlements etc.

Claims (12)

1. A biosorber for wastewater treatment, including a bioreactor with a fluidized bed, a system for saturating water with atmospheric oxygen, a wastewater supply pipe for treatment, a purified water outlet pipe and a recirculated flow pipe with a circulation pump, characterized in that the biosorber includes a receiving a metering chamber connected through a metering pump to a trap chamber of coal, which is connected to a bioreactor with a fluidized bed loading through a circulation pump, and the biosorber in Luciano an automated control unit biosorberom, the bioreactor is provided with a convex reflector of active carbon, installed in the upper part of the bioreactor adapted to provide ascending laminar fluid motion along the walls of a bioreactor. 2. The biosorber under item 1, characterized in that the receiving and dosing chamber contains a container for a coagulant connected to a dispenser for a coagulant. 3. The biosorber under item 1, characterized in that the convex reflector of activated carbon is made in the form of a cone. 4. The biosorber under item 2, characterized in that the dispenser for the coagulant is made in the form of a dosing peristaltic pump of the coagulant. 5. The biosorber according to claim 1, characterized in that the automated biosorber control module is connected to a coagulant sensor mounted on the coagulant container. 6. The biosorber under item 1, characterized in that the module for automated control of the biosorber is connected to the metering pump. 7. The biosorber according to claim 1, characterized in that the automated biosorber control module is connected to the air compressor of the water oxygen saturation system. 8. The biosorber according to claim 1, characterized in that the module for automated control of the biosorber is connected to a dispenser for the coagulant. 9. The biosorber according to claim 7, characterized in that the air compressor has a check valve to prevent water from entering. 10. The biosorber under item 1, characterized in that the module for automated control of the biosorber is connected to a wastewater level sensor located in the receiving and dosing chamber. 11. The biosorber under item 1, characterized in that the module for automated control of the biosorber is connected to the signaling unit of the pumps and emergency levels of treated water. 12. The biosorber under item 1, characterized in that the automated biosorber control module is connected to the SMS notification subsystem, which signals the loss of power and restoration of power supply, the occurrence of an accident of the metering and circulation pumps.

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