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WO2018025189A2 - Bioréacteur anaérobie - Google Patents

Bioréacteur anaérobie Download PDF

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Publication number
WO2018025189A2
WO2018025189A2 PCT/IB2017/054711 IB2017054711W WO2018025189A2 WO 2018025189 A2 WO2018025189 A2 WO 2018025189A2 IB 2017054711 W IB2017054711 W IB 2017054711W WO 2018025189 A2 WO2018025189 A2 WO 2018025189A2
Authority
WO
WIPO (PCT)
Prior art keywords
main container
sludge
anaerobic
container
outlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2017/054711
Other languages
English (en)
Spanish (es)
Other versions
WO2018025189A3 (fr
Inventor
Xicotencatl Fernando TOSCANO VILLICAÑA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Grupo Rotoplas SAB De CV
Original Assignee
Grupo Rotoplas SAB De CV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Grupo Rotoplas SAB De CV filed Critical Grupo Rotoplas SAB De CV
Priority to CR20190041U priority Critical patent/CR20190041U/es
Publication of WO2018025189A2 publication Critical patent/WO2018025189A2/fr
Publication of WO2018025189A3 publication Critical patent/WO2018025189A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/28—Anaerobic digestion processes

Definitions

  • the present invention relates to devices for the treatment of wastewater. More particularly, the present invention relates to an anaerobic bioreactor whose configuration allows it to perform a better release of solids achieving better water clarification, and more efficient gas release.
  • bioreactors Although one of the most important applications of bioreactors lies in the on-site treatment of sewage from residential houses, they can also be applied in condominiums, private, sports clubs, hotels, restaurants, offices, shopping centers, hospitals, buildings, etc.
  • CSTR Continuous Agitated Tank Reactor
  • UASB upward flow anaerobic sludge mantle
  • TIS serial tank
  • the function of the UASB Bioreactor is to temporarily support wastewater, so that a natural cleaning action that involves microorganisms anaerobes and through biochemical reactions, allow to contaminate wastewater contaminants. Subsequently, the liquid effluents are discharged to the receiving bodies. The remaining solids in the bioreactor are cleaned periodically and have a residence time such that it favors their stabilization, this implies that the sludge unlike other systems can be used as fertilizer for the plants while the generated gases are sent to the atmosphere through the vent tube.
  • the patent MX 213398 refers to a device of Wastewater treatment of a chamber that includes a valve for sludge extraction.
  • the tank is fed by means of a central tube directed towards the bottom.
  • This system includes a package for clarified liquid.
  • the sludge outlet is carried out through a second tube connected to a valve.
  • this equipment offers the great advantage of facilitating its cleaning, it also has great disadvantages, since the feedwater practically reaches the sludge area, causing turbulence and re-suspension of solids, this causes the anaerobic regime (without agitation and without air intake) is interrupted, and consequently its effectiveness of waste degradation decreases.
  • Another disadvantage of this system is that by having a sludge outlet through a tube, it can become clogged and thus eliminate the apparent advantage it offers for cleaning. The sludge, being easily re-suspended, can be dragged to the gasket or filter, causing clogging. Similarly, excessive accumulation of sludge will also inevitably cause clogging of the gasket.
  • the feed pipe by depositing the tributary at the bottom, does not allow sludge stabilization and degradation.
  • the floating matter once leaving the feeding tube, will flow directly to the entrance of the package and will inevitably tend to plug it, decreasing its effectiveness, thus creating a closed container that eventually will not It will allow the treatment of water for what was designed, in turn, will result in untreated water leakage increasing pollution of the place of use of this equipment.
  • the present invention proposes a wastewater treatment equipment that includes the advantages of anaerobic bioreactors, where the deflector zone is defined between the upper part of the main container and the lower part of the upper container that efficiently directs the gas outlet towards a biogas collection hood without gas accumulation.
  • Another advantage of the device of the present invention is that sludge sampling and extraction ports, in order to prolong the life of the system and provide effectiveness in its operation
  • the Bioreactor of the present invention also includes raw water inlet pipe and a sludge outlet configured within the same line, the shape of which allows an efficient distribution of water inside the tank and easy sludge expulsion. Also, being the same line used for the entry of raw water and for the extraction of sludge, this line does not get clogged, since the constant flow inside, promotes the removal of solids that could be stuck inside the pipeline.
  • Figure 1 is a perspective view of the wastewater treatment equipment of the present invention.
  • Figure 2 is a sectional view of the wastewater treatment equipment of the present invention.
  • Figure 3 is a perspective view of the pipe arrangement defined by the raw water inlet and sludge outlet, in its preferred embodiment.
  • Figure 4a is a front view of the wastewater treatment equipment of the present invention showing the formation of the deflector zone between the main container and the secondary container.
  • Figure 4b is an approach of the deflector zone of the wastewater treatment equipment of the present invention
  • Figure 5 is a top perspective view of the main container of the wastewater treatment equipment of the present invention.
  • Figure 6 shows a sectional view of the wastewater treatment equipment of the present invention.
  • a wastewater treatment equipment that can be interconnected with another similar device for greater capacity and provide a better effluent that meets the desired regulations.
  • the wastewater treatment equipment (Bioreactor) of the preferred embodiment in the present application is constituted by a main container (1) and a second container of lower capacity or upper container (2) forming a single base body (3) (the base body (3) can be manufactured in one piece or separately), preferably, manufactured in HDPE (High Density Polyethylene) reinforced, PVC, Polypropylene, stainless steel, carbon steel, concrete and fiberglass, considerably flat bottom.
  • HDPE High Density Polyethylene
  • the wastewater treatment equipment (Bioreactor), as shown in Figure 2, is defined by a gas-liquid-solid separation zone (4) located at the top of the reactor , as well as a sludge mantle zone (5) comprised at the bottom of the tank and that reaches up to 3 ⁇ 4 of the reactor, with a variable volume and a separation or sedimentation zone (6).
  • the separation zone (6) is located precisely in the upper part of the main or lower container (1) and is defined by the same configuration of the main container (1).
  • the wastewater treatment equipment (Bioreactor) shown in Figure 2 has a raw water inlet or inlet system also called tributary.
  • the feeding is carried out by means of a vertical inlet pipe (7) that projects from the top of the main container (1) with downspouts to the bottom, defining a closed pipe arrangement (8).
  • the closed arrangement (8) is defined by a single line of tubes that is formed by the raw water inlet pipe (7) that projects vertically from the top of the main container ( 1) to form a horizontally extending fold (8a), which in turn is surrounded by two parallel pipes (8b) and two perpendicular pipes (8c) to form the closed arrangement (8).
  • the sludge outlet pipe (10) is projected horizontally which, in turn, extends vertically inside the main container (1), to form an outlet that crosses the walls of said container (1) to be coupled with a flow valve.
  • Said arrangement (8) has the purpose of achieving a better distribution of raw water within the main container (1), as well as a better removal of sludge for its extraction.
  • a plurality of perforations (9) are formed on the arrangement (8), which in the preferred embodiment is nine perforations of 3.1 75 cm (1 1/4 inches), which not only allow the exit and distribution of raw water to the main container (1) but also serve as extraction ports since the closed arrangement (8), through the sludge outlet pipe (10) and a bypass valve, allows the extraction of sludge by gravity without the need for extraction pumps, thanks to the pushing force that prints the weight of the water contained in the base body (3), guiding the sludge towards the perforations (9) and therefore, towards the exit of sludge (10).
  • the arrangement (8) can have different configurations such as a circular, hexagonal, triangular shape etc.
  • the wastewater treatment equipment also has a gas-solid-liquid separation chamber (4) at the top.
  • the gas-solid-liquid separation chamber (4) shown in Figure 4a comprises:
  • the deflector (1 1) causes the diversion of the flocks towards a plurality of perforations (6a) formed in the vault of the container (1) (shown in Figure 5) that defines the separation or sedimentation zone (6).
  • the perforations (6a) of the separation or sedimentation zone (6) serve as a barrier to the florets causing the bubbles to detach from the solids when doing with the perimeter edges of the perforations (6a). Bacteria form granules and naturally let the gas out but it can stick to the surface when it hits the walls.
  • the water is clarifying as it rises due to the sedimentation effect and it is possible to separate it from the rest of the water that contains solids and gas thanks to the deflector effect of the hood, leaving only the upward flow of clear water, releasing the gases contained in its inside and returned the solids to the sludge deposit of the main container (1) by gravity.
  • the deflector (1 1) directs the gases efficiently to a biogas collection hood (12) located inside the upper container (2).
  • the bell (12) is formed by a conical lower section and a cylindrical upper section.
  • the lower edge of the hood (12) is located at a height between 10 and 50 cm, preferably 20 cm in relation to the deflector (1 1) to efficiently direct the gases outwards.
  • the cylindrical zone of the gas collecting hood (12) has a landfill crown attached to its upper part (13), which connects a clear water outlet pipe (14) that projects vertically outside the bell (12) but inside the upper container (2) in a downline to the main container (1), where a clear water outlet (18) is defined (see figure 1).
  • the pouring crown (13) comprises a cream outlet pipe (15), which allows to extract the creams that are formed in the water and which are directed outside the gas collecting hood ( 12) but inside the upper container (2) in a downline to the main container (1), where a cream outlet (20) is defined (see figure 1).
  • the vaulted upper part of the main container (1) that defines the separation zone (6) also has a central perforation (22) shown in Figure 5, called "man-step" to allow the access of a person to the container, for example, for inspection and assembly purposes or during installation.
  • the main container (1) has three sampling ports (16), as shown in Figures 6 and 1, at a height below the sludge outlet pipe (10).
  • the three sampling ports (16) are located 227 cm from the base of the main container (1);
  • Each sampling port consists of a horizontal pipe through which it enters the sludge, and one or more shunts and elbows necessary to transport the sludge through the wall of the container (1), flowing into its respective valve.
  • the first sample is taken at 250 cm, the second at 1 50 cm and the third at 50 cm.
  • the clear water outlet (14) also has a fluent tube or collector (17) see figure 1, for clarified effluent collection that projects from the top from the crown (1 3) of the biogas collecting hood (12 ).
  • Said effluent collection tube (17) is formed by at least one horizontal tube that is born from the perimeter wall of the crown (13) of the biogas collection hood (12) and is projected straight down the interior of the container upper (2) to the main container (1), from where it is projected horizontally across the perimeter wall of the same until defining an outlet (1 8) where a valve is coupled.
  • Said second pouring tube (19) is located in the inner part of the hood and chamber of gases below the crown (13).
  • the second pouring tube (1 9) may have the same configuration as the effluent discharge tube (17) previously described, which is also projected downwardly inside the upper container (2) towards the main container (1), where it extends horizontally through the main container (1) to a cream outlet (20) where a valve is coupled.
  • the feed, purge and sampling system allow the operator to simultaneously sample the sludge level and purge at the same time without stopping the water supply to the reactor.
  • the influent tube (7) reaches a point near the bottom of the main container (1), where it is branched to define a closed arrangement (8), so that the flow is divided into different sections of the tank, promoting a distribution at the bottom of the tank, a greater contact volume between the influent and the sludge mantle, in addition to calculating the feed rate at 0.5 m / h to provide a re-suspension of solids to the top. Also, this way of feeding promotes that the influent has an adequate upward flow rate inside the tank (laminar flow).
  • the influent water comes into contact with the mantle of sludge that accumulates at the bottom of the reactor.
  • the optimum operating level is one third of the reactor volume.
  • the liquid rises to the transition zone between the bottom of the tank and the separation zone (6), where the gas-solid-liquid separation will be carried out.
  • the liquid is filtered by the perforations (6a) and the deflector (1 1), where the solid-liquid separation by gravity is carried out, allowing the ascent of the clarified liquid through the perforations (6a).
  • the gas collected in the hood (12), is directed to the inside of it thanks to the effect caused by the dome of the tank which in the preferred mode is 25000 liters and channeled outwards through the outlet of gases (21).
  • the water inlet line or tributary (7) can be used as a cleaning line.
  • an access port (not shown), which in turn, it has a plug that allows access to any cleaning device, for example, a pressurized water hose.
  • the cleaning of the main container (1) is also carried out through the central opening (22).
  • Bioreactor of the present invention is that it is a modular device that can be connected in series or parallel with other similar equipment (s) or with aerobic bioreactors, for a treatment with a greater number of stages.
  • the Bioreactor of the present invention can be coupled to other equipment, either previous or later such as:
  • Anaerobic biological reactors CSTR (Complete mix), RAFA (Anaerobic Upward Flow Reactor), Fluidized and / or packed reactors, oxidation ditches of anaerobic or optional filters.
  • Anoxic reactors before or after the anaerobic reactor, with or without the addition of methanol or any carbon source are provided.
  • Biological full-mix aerobic reactors SBR (sequenced batch aerobic reactors), extended aeration, plug flow, aerobic ditches, MBR (membrane reactor) and MBBR (floating bed reactor) or fluidized bed reactors.
  • Physicochemical processes such as coagulation-flocculation, oxidation, advanced oxidation with physical and chemical adjuvants, to mention some hydrogen peroxide, iron chloride, silver, UV, ozone, etc., chemical precipitation, electrofloculation, coagulation by soluble chelating agents, DAF ( Dissolved air flotation), filtration in its different modalities, centrifugal decanters.
  • DAF Dissolved air flotation
  • Sludge drying processes such as band gaskets, press gaskets, centrifuges, incinerators, sludge thickeners and aerobic or anaerobic digesters.
  • hypochlorite generators from Sodium Chloride (NaCl), chlorine gas, chlorine tablets in any of its modalities, hypochlorite dosers in any of its concentrations, UV lamps either in the channel or in the reactor, ozone in any of its modalities
  • Pretreatment of manual or automatic sieves, static or canal, gravity or horizontal flow vertical sanding machines, aerated and automatic or vortex type, grease traps, homogenization tanks Pretreatment of manual or automatic sieves, static or canal, gravity or horizontal flow vertical sanding machines, aerated and automatic or vortex type, grease traps, homogenization tanks.
  • Instrumentation or measuring elements such as magnetic, ultrasonic, propeller, channel flow meters such as parshall meters; Sludge level meters, pH, conductivity, turbidity, temperature, pressure, BOD, COD, dissolved oxygen sensor.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
  • Treatment Of Sludge (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)

Abstract

La présente invention concerne un bioréacteur RAFA ou UASB constitué d'un conteneur principal et d'un conteneur supérieur qui forment un corps de base, à l'intérieur duquel est formé une zone de couverture de boues, une zone de séparation et une zone de séparation gaz-liquide-solide. Ledit conteneur principal reçoit des eaux non traitées traversant un tuyau d'alimentation qui se projette depuis la partie supérieure du conteneur principal, lequel se projette dans une direction descendante jusqu'à définir un système fermé qui définit une seule ligne avec le tuyau de sortie de boues, ladite zone de séparation gaz-liquide-solide recevant les gaz libérés lors du processus, dans une cloche collectrice de biogaz qui présente dans sa partie supérieure une couronne de déversement qui accouple un tuyau de sortie d'eau claire et un tuyau de sortie de graisses dans sa partie inférieure.
PCT/IB2017/054711 2016-08-02 2017-08-02 Bioréacteur anaérobie Ceased WO2018025189A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CR20190041U CR20190041U (es) 2016-08-02 2017-08-02 Biorreactor anaerobio

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MXMX/U/2016/000317 2016-08-02
MX2016000317 2016-08-02

Publications (2)

Publication Number Publication Date
WO2018025189A2 true WO2018025189A2 (fr) 2018-02-08
WO2018025189A3 WO2018025189A3 (fr) 2018-03-29

Family

ID=61073319

Family Applications (1)

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PCT/IB2017/054711 Ceased WO2018025189A2 (fr) 2016-08-02 2017-08-02 Bioréacteur anaérobie

Country Status (4)

Country Link
AR (1) AR118396A4 (fr)
CR (1) CR20190041U (fr)
PE (1) PE20190527Z (fr)
WO (1) WO2018025189A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2792776A1 (es) * 2020-06-25 2020-11-11 Urbaser Sa Instalación y procedimiento de digestión anaerobia
WO2021101360A1 (fr) * 2019-11-22 2021-05-27 Valdes De La Garza Javier Clarificateur/dégazeur et dispositif de redirection de flux à double cône concentrique pour bioréacteurs à multiples types de biomasses et biofilm

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX213398B (es) * 1998-12-08 2002-10-22 Equipo de tratamiento de aguas residuales domesticas con extraccion de lodos
MX338620B (es) * 2011-05-13 2016-03-22 José Rogelio Pérez Monsrreal Planta modular para tratamiento de aguas residuales.
ES2401445B2 (es) * 2013-02-01 2014-01-20 Universidade De Santiago De Compostela Sistema Integrado de reactor anaerobio metanogénico y biorreactor de membranas para la eliminación de materia orgánica y nitrógeno en aguas residuales

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021101360A1 (fr) * 2019-11-22 2021-05-27 Valdes De La Garza Javier Clarificateur/dégazeur et dispositif de redirection de flux à double cône concentrique pour bioréacteurs à multiples types de biomasses et biofilm
ES2792776A1 (es) * 2020-06-25 2020-11-11 Urbaser Sa Instalación y procedimiento de digestión anaerobia

Also Published As

Publication number Publication date
PE20190527Z (es) 2019-04-11
WO2018025189A3 (fr) 2018-03-29
CR20190041U (es) 2019-04-25
AR118396A4 (es) 2021-10-06

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