WO2014114378A1

WO2014114378A1 - Multi-compartment device for the treatment of vertical flow wastewater

Info

Publication number: WO2014114378A1
Application number: PCT/EP2013/073119
Authority: WO
Inventors: Alfredo ZUFIAUR FERNANDEZ DE BETOÑO
Original assignee: Zufiaur Fernandez De Beto O Alfredo
Priority date: 2013-01-23
Filing date: 2013-11-06
Publication date: 2014-07-31
Also published as: ES2479343B1; ES2479343A1

Abstract

Multi-compartment device for the treatment of vertical flow wastewater characterized in that it comprises a deposit (1) divided into a plurality of compartments (2, 2', 2'',...,2ⁿ) that communicate to one another and configured to operate as autonomous reactors. The circulation of wastewater occurs from one compartment to the next in a successive manner, where the compartments(2, 2', 2'',...,2ⁿ) are hermetically closed in their upper part and have hoods (3) for the collection of gases from the metabolic reactions, a receptacle (4) for the collection of sediments in their lower part, and a mesh filter (5) for the separation of biomass in their central portion.

Description

MULTI-COMPARTMENT DEVICE FOR THE TREATMENT OF VERTICAL

FLOW WASTEWATER

DESCRIPTION

Field of the invention

The present invention is encompassed within the field of industrial and urban wastewater purification, within the environmental sector, and more specifically, it relates to a m u 11 i -com part men t device for the treatment of vertical flow wastewater. State of the art

There is a broad variety of purification devices used today, from septic wells to grease and oil separators and including Imhoff tanks, circular deposits, sedimentation channels, vertical flow circular settlers, horizontal flow rectangular settlers, coagulation and floccuiation chambers, and ozone contact chambers.

The problems exhibited by the aforementioned devices are that they carry out a determined function in the treatment of wastewater and work according to very specific parameters, which is why the design has to match a single function.

Due to the foregoing, we have detected the need to design a multi-compartment device fo the treatment of vertical flow wastewater that can be used with aerobic, anaerobic, and anoxic purification and wastewater sedimentation systems, that is to say, a very versatile device.

This objective is achieved by means of the invention as defined in claim 1 . The dependent claims define preferred embodiments of the invention

Description of the invention

The invention refers to a m ulti-co m pa t m e n t device for the treatment of vertical flow wastewater.

The multi-compartment device object of the present invention has the particularity that it comprises a deposit divided into a plurality of compartments that communicate to one another arc and configured to operate as autonomous reactors. In addition, the circulation of wastewater occurs from one compartment to the next in a successive manner, with the progressive treatment of the water. On the other hand, the compartments are hermetically closed in their upper part and have hoods for the collection of gases from the metabolic reactions and a receptacle for the collection of sediments in their lower part. In addition, the compartments have a mesh filter for the separation of biomass in their central portion.

In another aspect of the invention, each one of the compartments will have a parallelepiped plant and a prismatic shape, where the compartments have parallel walls, first walls and second walls, such that each second wall of a compartment is adjacent to the first wall of the immediately subsequent compartment, there being a connection between adjacent compartments by means of openings, a first opening made in the upper part of first pairs of walls of adjacent compartments, and a second opening made in the lower part of second pairs of walls of adjacent compartments, where the first openings alternate with the second openings in every pair of successive adjacent compartments.

This way, and taking into account the configuration of the device described above, we have a m u 11 i - co m part m e n t device where the water passes through the different compartments of the device, where the metabolic reactions on the biomass take place, in a dynamic and successive manner. Therefore, the purification or treatment of wastewater is carried out in a progressive and controlled manner, and the wastewater, by circulating according to the movement defined by the configuration of the compartments, causes the contact surface between the wastewater and the treatment agents, that is to say, the biomass undertaking the purification, to be larger. In addition, we also achieve the absence of dead points or areas of stratified. After passing through the compartments, the wastewater loses the DB05, DQ05, and SS variables in a progressive manner, the organic matter precipitates by sedimentation when mineralized, and sludge is deposited in the lower part of each compartment and is subsequently removed from the device.

In another aspect of the invention, the compartments forming part of the device may be of reinforced concrete given the resistance characteristics of this material, the compartments being independent from one another in terms of structure, and operating in a series, that is to say, the wastewater passes from one compartment to the next, and the successive compartments can be placed in several parallel lines.

in addition, given that the different compartments making up the device are located in an adjacent manner covering the entire space of the deposit comprising the device, there are considerable space savings for the same volume of wastewater to be treated, rendering the treatment process more efficient and also obtaining important savings in terms of construction materials for the deposit. Maintenance costs will also be significantly reduced, taking into account the specific configuration and location of the different compartments inside of the device.

In another aspect of the invention, the treatment of wastewater can be carried out by means of metabolic reactions selectable between aerobic, anaerobic, or anoxic metabol ic reactions, or a combination thereof.

Therefore, all types of wastewater treatments can be carried out by means of the m u 11 i -com part m ent device for the treatment of vertical flow wastewater object of the present invention, that is to say, this is very versatile device that is capable of treating and purifying all sorts of wastewater, such as high-load, medium-load, or low-load wastewater.

in another aspect of the invention, reagents selectable between air, hot water, carbon dioxide, or a combination thereof, can be introduced into the wal l bushings of the lateral walls of each compartment in order to favor the metabol ic reactions and increase the performance of the wastewater treatment process.

Lastly, the biogas obtained as a result of the metabol ic reactions can be reintroduced into the compartments as a reactive.

Brief description of the drawings

Next, a series of drawings will be very briefly described for a better comprehension of the invention and that are expressly related to an embodiment of the said invention, which is presented by way of a non-limitative example thereof.

Figure 1 represents a lateral schematic view of a first embodiment of the multicompartment device for the t reatment of vert ical flow wastewater.

Figure 2 represents a schematic top plant view of a second embodiment of the multi-compartment dev ice for the treatment of vertical flow wastewater.

The aforementioned figures identify a series of references corresponding to the elements indicated below in a non-limitative manner:

1 . - deposit

2, 2', 2", 2".- compartments

3.- gas collection hood

4. - ludge collection receptacle

5. - mesh filter

6, 6', 6", 6".- first wall of each compartment

7, 7', 7", 7".- second all of each compartment

8.- first opening made in the first wall

9. - second opening made in the second wall

10. - wal l bushing

1 1 .- wastewater inlet

12.- clean water outlet

1 3.- sludge outlet 14. - gas collector

15. - compartments of the second embodiment

16. - wastewater inlet of the second embodiment

17. - lower openings of the second embodiment

18.- upper openings of the second embodiment

19.- clean water outlet of the second embodiment

Detailed description of the invention

Figure 1 shows a lateral view of a first embodiment of the multi-compartment device object of the invention in a schematic manner. Said figure 1 shows that the device has a container deposit 1 , which is divided, in this particular case, into four compartments 2, 2', 2", 2" ' made of reinforced concrete and located in series, that is to say, one after the other. Each pair of compartments has an adjacent wall attached. For greater clarity, the explanation will describe the four adjacent compartments 2, 2', 2", 2' ", with the understanding that the explanations included in the description of the four compartments shall also apply to the subsequent compartments if there are more than four, given that even though the device has four compartments in this embodiment of the invention, the number of compartments can vary and be more than four or even less than four, depending on the needs of each case.

In the present embodiment, each one of the compartments 2, 2', 2", 2' " will have a paral lelepiped plant, such that the first compartment 2 will have two parallel walls 6 and 7. the second compartment 2' will have two parallel walls 6' and 7^", the third compartment 2" will have two parallel w alls 6" and 7", and the fourth compartment 2' " will have two paral lel walls 6' " and 7" '. Next, a first pair of walls 7 '-6" will be defined, in which the first openings, located in the upper part of said first pair of walls 7'-6", will be made. It should be noted that the first compartment 2 has an upper opening in one of its walls 6 for the wastewater inlet 1 1 , and the fourth compartment 2' " has an upper opening in one of its wal ls 7" ' for the clean water outlet 1 2 after the wastewater has been treated. On the other hand, w e will define second pairs of walls 7-6^' and 7"-6' ", where the second openings 9 and 9' are made. That is to say, for a total of four compartments, there will be one first opening 8 and two second openings 9, 9', the second opening 9 alternating with the first opening 8 and the first opening 8 alternating with the other second opening 9'. This way, the wastewater passes from one compartment to the immediately adjacent one by passing through the entire height of the compartment from the wastewater inlet 1 1 until the second opening 9, from the second opening 9 to the first opening 8, and from the first opening 8 to the second opening 9\ and finally to the clear water outlet 12. As shown in figure 1 , the direction of the movement of the wastewater flow has been represented in figure 1 with respective arrows. Therefore, the movement of the wastewater flow is dynamic and successive through the different compartments 2, 2\ 2", and 2" ', which is why the purification of water is gradual and control led at al l times.

Each one of the compartments 2, 2\ 2", and 2' " has a hood 3 for the col lection of gases coming from the metabol ic reactions, all of which converge in a gas collector 14. This gas collector 14 can communicate with one or several of the compartments 2, 2', 2", and 2" ' in order to reintroduce the gases into said compartments to be used as reagents.

The treatment of wastewater can be carried out in each one of the compartments 2, 2', 2", and 2' " by means of metabolic reactions selectable between metabol ic, aerobic, anaerobic or ano ic metabol ic reactions, or a combination thereof. To achieve the foregoing, each compartment 2, 2', 2", and 2' " has a mesh filter 5 in its central part, in which the biomass is arranged. Once the metabol ic reactions have taken place, and as a result thereof, a series of sediments are produced in each compartment 2, 2', 2", and 2" ', which are col lected in the form of sludge in respective col lection receptacles 4, which communicate with each other in a sludge outlet 13, common to every compartment.

In addition, in order to improve the metabolic reactions, the inlets of different reagents such as air, hot water, carbon dioxide, or a combination thereof, have been arranged in the wal l bushings 10 of the lateral wal ls of each compartment 2, 2', 2", and 2" ', which are perpendicular to the lateral walls 6, 6', 6", 6" ', and 7, 7\ 7", 7" '.

In a second embodiment of the device object of the present invention, schematical ly represented in figure 2, the device has a total of eight compartments 15 arranged in two parallel l ines of four compartments each, all of them being connected to one another in the manner indicated above. The wastewater inlet is represented with reference 16, the lower openings have been indicated with reference 17, the upper openings with the reference 18, and the treated clean water outlet has been indicated w ith reference 19. The direction of the travel of the water flow has been represented in figure 2 by means of arrows.

The implementation process of the multi-compartment device object of the present invention will be the following:

In the first place we will need to determine the discharge flow rate of the untreated wastewater, based on which a study of the equivalent inhabitants DBO, DQO, SS, SV, characteristic of said discharge flow. The volume of the reactor is subsequently measured with the data obtained from the study.

Secondly, we will study the environmental impact, potential environmental risks, geographic and solar orientation, prevailing winds.. . etc.

Thirdly, we undertake an economic study, a civil works budget, maintenance expenses, and exploitation expenses in order to look for the financing method.

Fourthly, the device is designed and calculated and the civil works are undertaken. Given that there are several compartments, it is necessary to determine the type of metabol ism to choose which type of filters is better for the water to pass through the filter and settle.

Fifthly, the installation begins, which will be simple and quick. It should be noted that in areas where the weather varies, the operation differences between the different seasons must be defined.

Claims

1. - Multi-compa rt m c n t device for the treatment of vertical flow wastewater, characterized in that it comprises a deposit (1) div ided into a plural ity of compartments (2, 2', 2 2ⁿ) that communicate to one another and configured to operate as autonomous reactors, where the circulation of wastewater occurs from one compartment to the next in a successive manner, where the compartments (2, 2', 2", 2") are hermetically closed in their upper part and have hoods (3) for the collection of gases from the metabolic reactions, a receptacle (4) for the collection of sediments in their lower part, and a mesh filter (5) for the separation of biomass in their central portion.

2. - u 11 i -co m pa rt m c n t device for the treatment of vertical flow wastewater according to claim 1 , characterized in that each one of the compartments (2, 2', 2", 2") has a paral lelepiped plant and a prismatic shape, where the compartments have paral lel walls, first w al ls (6, 6', 6", 6ⁿ) and second walls (7, 7', 7", 7ⁿ), such that each second wall (7, 7', 7", 7ⁿ⁺¹) of a compartment is adjacent to the first wall (6, 6 ' , 6 " , .. . , 6" ) of the immediately subsequent compartment, there being a connection betw een adjacent compartments (2, 2', 2", 2ⁿ) by means of openings, a fi st opening (8, 8', 8", 8ⁿ), made in the upper part of first pairs of w al ls (7'-6"), (7" '-6" ").. . (7^n_1-7ⁿ) of adjacent compartments, and a second opening (9, 9', 9", 9ⁿ), made in the lower part of second pairs of walls (7-6'), (7"-6" ').. . (7ⁿ-7^n†1) of adjacent compartments, where the first openings alternate with the second openings in ev ery pair of successive adjacent compartments.

3.- Multi-compartment device for the treatment of vertical flow wastewater according to claims 1 and 2, characterized in that the compartments (2, 2\ 2", 2") are of reinforced concrete, arc independent from one another, and operate in a series, the compartments being arranged in several parallel lines.

4.- Multi-compartme n t device for the treatment of vertical flow wastewater according to the previous claims, characterized in that the treatment of wastewater is carried out by means of metabolic reactions selectable between aerobic, anaerobic, ano ic metabol ic reactions or a combination thereof.

5.- M u 11 i -co m pa rt m en t device for the treatment of v ertical flow wastewater according to the previous claims, characterized in that reagents selectable between air, hot water, carbon dioxide, or a combination thereof, can be introduced into the wall bushings ( 10) of the lateral walls of each compartment.

6.- u 11 i -co m p a rt m e n t dev ice for the treatment of vertical flow wastewater according to the prev ious claims, characterized in that the biogas obtained as a result of the metabolic reactions is reintroduced into the compartments as a reagent.