CA2837311A1 - Septic waste-to-energy method and apparatus - Google Patents
Septic waste-to-energy method and apparatus Download PDFInfo
- Publication number
- CA2837311A1 CA2837311A1 CA2837311A CA2837311A CA2837311A1 CA 2837311 A1 CA2837311 A1 CA 2837311A1 CA 2837311 A CA2837311 A CA 2837311A CA 2837311 A CA2837311 A CA 2837311A CA 2837311 A1 CA2837311 A1 CA 2837311A1
- Authority
- CA
- Canada
- Prior art keywords
- septic tank
- biogas
- septic
- tank
- electricity
- 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.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 46
- 241000894006 Bacteria Species 0.000 claims abstract description 25
- 230000005611 electricity Effects 0.000 claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 230000000696 methanogenic effect Effects 0.000 claims abstract description 5
- 238000009428 plumbing Methods 0.000 claims description 6
- 241001148471 unidentified anaerobic bacterium Species 0.000 claims description 5
- 238000002386 leaching Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 239000010802 sludge Substances 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 claims 2
- 102000004190 Enzymes Human genes 0.000 claims 1
- 108090000790 Enzymes Proteins 0.000 claims 1
- 239000000872 buffer Substances 0.000 claims 1
- 239000012528 membrane Substances 0.000 claims 1
- 235000015097 nutrients Nutrition 0.000 claims 1
- 239000004576 sand Substances 0.000 claims 1
- 239000010791 domestic waste Substances 0.000 abstract description 4
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 230000009469 supplementation Effects 0.000 abstract 1
- 230000001502 supplementing effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 24
- 239000002351 wastewater Substances 0.000 description 14
- 239000003345 natural gas Substances 0.000 description 9
- 239000002699 waste material Substances 0.000 description 6
- 238000004065 wastewater treatment Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000002689 soil Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 241001453382 Nitrosomonadales Species 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- OGIIWTRTOXDWEH-UHFFFAOYSA-N [O].[O-][O+]=O Chemical compound [O].[O-][O+]=O OGIIWTRTOXDWEH-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000002551 biofuel Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- -1 feces Substances 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000003389 potentiating effect Effects 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
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
- C02F3/006—Regulation methods for biological treatment
-
- 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
- C02F3/2866—Particular arrangements for anaerobic reactors
-
- 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
- C02F3/2866—Particular arrangements for anaerobic reactors
- C02F3/2893—Particular arrangements for anaerobic reactors with biogas recycling
-
- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/348—Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the way or the form in which the microorganisms are added or dosed
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/03—Pressure
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Environmental & Geological Engineering (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Sustainable Development (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Treatment Of Sludge (AREA)
Abstract
A method and apparatus for the production of a methane rich biogas from a septic tank for the purposes of electricity production involves the modification of conventional septic tank designs and the supplementation of genetically modified methanogenic bacteria. Biogas produced from modified or newly installed septic systems is collected and stored for electricity generation in external gas powered generators. To optimize the energy potential of this septic tank gas apparatus, a method of supplementing domestic waste within the septic tank with methanogenic microbes is implemented. Genetically enhanced methanogenic bacteria are supplemented to the septic system to improve gas production and overall power efficiency of the apparatus.
Description
Title Septic Waste-to-Energy Method and Apparatus Field of the Invention The present invention relates to the improvement of conventional septic tanks used for the treatment and storage of domestic wastes. The field of this invention pertains to the Background of the Invention The purpose of septic tanks is small-scale sewage treatment: to collect waste generated by the occupants of a dwelling, and to disperse water such that it will not cause damage to the environment. It is common in areas without connection to government or corporation's main sewage pipes.
Septic tanks are widely used, including suburbs, small communities, rural areas, and corporations.
Septic tanks consists of an inlet wastewater pipe connecting the dwelling's plumbing to one or several tanks, which connect on their opposite ends to an outlet wastewater pipe that enters a drain field. The tank itself is divided into two chambers, which are separated by a vertical dividing wall with openings. The tank relies on indigenous anaerobic bacteria present to break down the wastewater entering it. Wastewater discharged from the household plumbing (toilet, sinks, laundry, etc.) travels through the inlet wastewater pipe and enters the first fluid-filled chamber, solids settling at the bottom and scum floating at the top.
The sunken solids are anaerobically decomposed, reducing their volume. The liquid component flows through the dividing wall into the second chamber, where further scum-solid separation occurs. The solid is again broken down and the liquid drains through the outlet into a leach field (i.e. drain field or seepage field). The drain field receives the effluent via a network of perforated pipes laid in gravel-filled trenches or beds. Wastewater trickles out of the pipes, through the gravel layer, and into the soil. The soil below the drain field provides the final treatment and disposal of the effluent, purified via biological and chemical processes of the soil.
Current septic tanks that are used to generate electricity do not take full advantage of the natural gas released by bacteria. The invention described uses genetically modified bacteria to target an increase of methane gas for electricity generation. It is a process by which we can generate a sustainable cycle of renewable energy production from waste excretion.
The anaerobic environment promotes fermentation, leading to the generation of carbon dioxide and methane. Methane is a potent greenhouse gas and stores a considerable amount of potential energy.
Manure, feces, and other organic materials are all carbon sources that anaerobic bacteria can ferment into methane (CI-14). This natural gas can be collected, stored, and converted to electricity. Furthermore, the amount of gas generated by a septic tank can be increased, for increased electricity production and storage. Generators convert natural gas to electricity by the motion of turbines, converting mechanical energy to electrical energy. Septic tanks rely on indigenous anaerobic bacteria already present in the tank to break down. Current septic tanks that are used to generate electricity do not take full advantage of the natural gas released by bacteria.
Summary of the Invention The invention described will use genetically modified bacteria to target an increase of methane gas for electricity generation. It can thus be seen that the present invention provides a novel method of energy generation from septic tank, which successfully integrates genetically modified bacteria to increase the methane production to convert to electricity via a series of piping, tanks, and a commercial generator. The electricity stored in the generator can be used for energy, including powering the dwelling and consequently decreasing the electricity bill.
The invention pertains to existing or new septic tank systems. More specifically, the invention relates to a process by which dwelling wastewater is expelled, with additional genetically modified bacteria, via the plumbing system, through the inlet pipe into the septic tank. Through the addition of the gene responsible for the bacteria's capacity to produce methane from the wastewater, the new bacteria contributes to septic tank's existing bacteria mass in its ability to yield natural (sewer) gas. The gas rises to the top of the tank and is gathered by a gas trap. The gas trap collects the methane and the gas travels through piping to storage tanks. The storage tanks keep in reserve the natural gas, which is then fed through a commercial generator to generate electricity.
The invention possesses numerous benefits and advantages over known methods of septic energy harnessing. While the references described in the prior art section may be adequate for their intended purposes, they do not encompass all the elements covered by our method for the purpose of energy production. For instance, it was believed that a methane-digester was impractical, as typical septic tanks do not foster the conditions that existing anaerobic organisms need to produce a significant amount of gas. This problem is solved by genetically modifying additional bacteria to amplify the amount of methane produced to a significant level, such that it can be stored and converted into a useable amount of electricity.
Additional features and advantages of the present invention will become more apparent from the detailed description that follows, taken in conjunction with the accompanying drawings.
Brief Description of the Drawings FIG. 1 is a side view of the septic tank component of the system, showing a cross-section of the tank.
FIG. 2 is a side view of the overall apparatus, featuring the septic tank system transitioning from the home to the leaching field underground. The gas collection apparatus is aboveground from the septic tank and includes the connections of the gas trap pump, storage tanks and generator.
FIG. 3 is an overview of the gas enhancement procedure in septic tank system.
Description of the Preferred Embodiment With reference to the drawings and, in particular, with reference to FIGS 1 and 2, the waste-to-energy apparatus consists of a septic tank and a series of gas collection devices including a gas pump, storage tanks and a commercial generator. FIG 1 illustrates a cutaway view of the septic tank portion of the apparatus. Noted in the figure is the inlet pipe (4), which supplies the tank with domestic waste from the residential toilet and sinks pipelines. It is from this inlet source in which waste and supplemental bacteria are able to enter the tank for anaerobic digestion and biogas production. Also shown in FIG 1 are gas outlet (3) and liquid outlet (5). The gas outlet carries the accumulating biogas out of the tank and into the aboveground gas processing equipment (not shown in this figure). The liquid outlet drains clarified water into the leaching field (also not shown in FIG 1) similar to that of conventional septic systems.
FIG 1 shows the extra insulating layer (6) composed of either concrete and/or other conventional encasing material. Much of the septic tank in FIG 1 resembles that of typical septic tanks, with the emphasis being on the crucial addition of the gas outtake pipe. Features like a baffle (1) and access ports (2) are common in most septic tanks on the market today.
FIG 2 is a comprehensive overview of the apparatus, and similarly, the method for generating electricity from enhanced bacteria in septic tanks. The figure shows the components of the apparatus that are aboveground and underground and a simplified case of the equipment's arrangement. As examined in FIG 1, the septic tank is shown in FIG 2 as well, labelled as (11). The leaching field (12) drains water underground and downslope from the septic tank, a feature that is common in virtually all septic systems today. Notable features in FIG 2 include the gas processing equipment of the apparatus, consisting of the gas pump (17), storage tanks (16) and gas generator (15). Each of these components is electrically activated and controlled from a controller inside of the house (13). The electricity from the generator is fed into the house's power supply (14). Access ports (20) are sealed shut as to eliminate the penetration of the oxygen inside the tank, or the release of biogas outside of the tank.
Genetically modified bacteria are delivered through the inlet port from the house's plumbing (12).
FIG 3 is an overview of the gas enhancing method involving a genetically modified methanogenic microorganism that has been optimized to produce methane gas from domestic wastes. As a general procedure, bacteria cultures with the optimized anaerobic bacteria can be flushed down the toilet or dumped down the sink to encourage an increased gas production rate from the bacteria already existing in the septic tank system.
Description of Prior Art It is known in the prior act to provide a process by which wastewater entering a septic tank is converted into energy. The following prior arts cover select claims in our process, but not all and for different objectives.
Prior Art #1: CAN Patent CA 2609005 C describes a method and apparatus for remediating a failing wastewater treatment system comprising a positive air, oxygen, ozone, or combination thereof, generating pressure pump directing the air, oxygen ozone, or combination through a tube to an air stone, suspended in the effluent. Attached growth bacteria grow on a plurality or random directional brushes in an effluent tank, e.g. septic tank. As shown in Table 1, this patent covers solely wastewater treatment and septic tank application in relation to our invention, but does not use genetically modified bacteria, collection of natural gas, or use of septic waste for electricity production.
Prior Art #2: US Patent 20100314311 Al outlines a method for removing the contamination of C,N
utilizing heterotrophic ammonia-oxidizing bacteria ¨ more specifically, heterotrophic ammonia oxidation bacteria to remove carbon and nitrogen pollutants in wastewater. Table 1 depicts this method's coverage of the use of modified bacteria in wastewater treatment, but does not associate to septic tanks, collection of natural gas, or electricity generation from the waste.
Prior Art #3: CAN Patent CA1234229 Al discloses a process and apparatus for anaerobic biological purification of wastewater containing organic pollutants, purified through a two-reactor series. This 1980's patent is outdated and basically describes a septic tank, which covers septic tank, wastewater treatment, and natural gas collection from our process, but does not utilize the use of genetically modified bacteria or the production of electricity from septic waste.
Prior Art #4: European Patent EP 1232123 Al depicts a biofuel cell using wastewater and active sludge for wastewater treatment. The biofilel cell uses wastewater as a fuel, as electrochemically active microorganisms oxidize the organic substances. Electrons are discharged and transferred to the electrode, allowing electric current to be generated while wastewater is purified. This patent covers wastewater treatment in septic tanks and generation of energy from this purification, but does not use genetically modified bacteria or the collection of natural gas.
It is apparent from the foregoing that the prior art fails to mention all the aspects of this novel process for the appropriate use of energy production.
Septic tanks are widely used, including suburbs, small communities, rural areas, and corporations.
Septic tanks consists of an inlet wastewater pipe connecting the dwelling's plumbing to one or several tanks, which connect on their opposite ends to an outlet wastewater pipe that enters a drain field. The tank itself is divided into two chambers, which are separated by a vertical dividing wall with openings. The tank relies on indigenous anaerobic bacteria present to break down the wastewater entering it. Wastewater discharged from the household plumbing (toilet, sinks, laundry, etc.) travels through the inlet wastewater pipe and enters the first fluid-filled chamber, solids settling at the bottom and scum floating at the top.
The sunken solids are anaerobically decomposed, reducing their volume. The liquid component flows through the dividing wall into the second chamber, where further scum-solid separation occurs. The solid is again broken down and the liquid drains through the outlet into a leach field (i.e. drain field or seepage field). The drain field receives the effluent via a network of perforated pipes laid in gravel-filled trenches or beds. Wastewater trickles out of the pipes, through the gravel layer, and into the soil. The soil below the drain field provides the final treatment and disposal of the effluent, purified via biological and chemical processes of the soil.
Current septic tanks that are used to generate electricity do not take full advantage of the natural gas released by bacteria. The invention described uses genetically modified bacteria to target an increase of methane gas for electricity generation. It is a process by which we can generate a sustainable cycle of renewable energy production from waste excretion.
The anaerobic environment promotes fermentation, leading to the generation of carbon dioxide and methane. Methane is a potent greenhouse gas and stores a considerable amount of potential energy.
Manure, feces, and other organic materials are all carbon sources that anaerobic bacteria can ferment into methane (CI-14). This natural gas can be collected, stored, and converted to electricity. Furthermore, the amount of gas generated by a septic tank can be increased, for increased electricity production and storage. Generators convert natural gas to electricity by the motion of turbines, converting mechanical energy to electrical energy. Septic tanks rely on indigenous anaerobic bacteria already present in the tank to break down. Current septic tanks that are used to generate electricity do not take full advantage of the natural gas released by bacteria.
Summary of the Invention The invention described will use genetically modified bacteria to target an increase of methane gas for electricity generation. It can thus be seen that the present invention provides a novel method of energy generation from septic tank, which successfully integrates genetically modified bacteria to increase the methane production to convert to electricity via a series of piping, tanks, and a commercial generator. The electricity stored in the generator can be used for energy, including powering the dwelling and consequently decreasing the electricity bill.
The invention pertains to existing or new septic tank systems. More specifically, the invention relates to a process by which dwelling wastewater is expelled, with additional genetically modified bacteria, via the plumbing system, through the inlet pipe into the septic tank. Through the addition of the gene responsible for the bacteria's capacity to produce methane from the wastewater, the new bacteria contributes to septic tank's existing bacteria mass in its ability to yield natural (sewer) gas. The gas rises to the top of the tank and is gathered by a gas trap. The gas trap collects the methane and the gas travels through piping to storage tanks. The storage tanks keep in reserve the natural gas, which is then fed through a commercial generator to generate electricity.
The invention possesses numerous benefits and advantages over known methods of septic energy harnessing. While the references described in the prior art section may be adequate for their intended purposes, they do not encompass all the elements covered by our method for the purpose of energy production. For instance, it was believed that a methane-digester was impractical, as typical septic tanks do not foster the conditions that existing anaerobic organisms need to produce a significant amount of gas. This problem is solved by genetically modifying additional bacteria to amplify the amount of methane produced to a significant level, such that it can be stored and converted into a useable amount of electricity.
Additional features and advantages of the present invention will become more apparent from the detailed description that follows, taken in conjunction with the accompanying drawings.
Brief Description of the Drawings FIG. 1 is a side view of the septic tank component of the system, showing a cross-section of the tank.
FIG. 2 is a side view of the overall apparatus, featuring the septic tank system transitioning from the home to the leaching field underground. The gas collection apparatus is aboveground from the septic tank and includes the connections of the gas trap pump, storage tanks and generator.
FIG. 3 is an overview of the gas enhancement procedure in septic tank system.
Description of the Preferred Embodiment With reference to the drawings and, in particular, with reference to FIGS 1 and 2, the waste-to-energy apparatus consists of a septic tank and a series of gas collection devices including a gas pump, storage tanks and a commercial generator. FIG 1 illustrates a cutaway view of the septic tank portion of the apparatus. Noted in the figure is the inlet pipe (4), which supplies the tank with domestic waste from the residential toilet and sinks pipelines. It is from this inlet source in which waste and supplemental bacteria are able to enter the tank for anaerobic digestion and biogas production. Also shown in FIG 1 are gas outlet (3) and liquid outlet (5). The gas outlet carries the accumulating biogas out of the tank and into the aboveground gas processing equipment (not shown in this figure). The liquid outlet drains clarified water into the leaching field (also not shown in FIG 1) similar to that of conventional septic systems.
FIG 1 shows the extra insulating layer (6) composed of either concrete and/or other conventional encasing material. Much of the septic tank in FIG 1 resembles that of typical septic tanks, with the emphasis being on the crucial addition of the gas outtake pipe. Features like a baffle (1) and access ports (2) are common in most septic tanks on the market today.
FIG 2 is a comprehensive overview of the apparatus, and similarly, the method for generating electricity from enhanced bacteria in septic tanks. The figure shows the components of the apparatus that are aboveground and underground and a simplified case of the equipment's arrangement. As examined in FIG 1, the septic tank is shown in FIG 2 as well, labelled as (11). The leaching field (12) drains water underground and downslope from the septic tank, a feature that is common in virtually all septic systems today. Notable features in FIG 2 include the gas processing equipment of the apparatus, consisting of the gas pump (17), storage tanks (16) and gas generator (15). Each of these components is electrically activated and controlled from a controller inside of the house (13). The electricity from the generator is fed into the house's power supply (14). Access ports (20) are sealed shut as to eliminate the penetration of the oxygen inside the tank, or the release of biogas outside of the tank.
Genetically modified bacteria are delivered through the inlet port from the house's plumbing (12).
FIG 3 is an overview of the gas enhancing method involving a genetically modified methanogenic microorganism that has been optimized to produce methane gas from domestic wastes. As a general procedure, bacteria cultures with the optimized anaerobic bacteria can be flushed down the toilet or dumped down the sink to encourage an increased gas production rate from the bacteria already existing in the septic tank system.
Description of Prior Art It is known in the prior act to provide a process by which wastewater entering a septic tank is converted into energy. The following prior arts cover select claims in our process, but not all and for different objectives.
Prior Art #1: CAN Patent CA 2609005 C describes a method and apparatus for remediating a failing wastewater treatment system comprising a positive air, oxygen, ozone, or combination thereof, generating pressure pump directing the air, oxygen ozone, or combination through a tube to an air stone, suspended in the effluent. Attached growth bacteria grow on a plurality or random directional brushes in an effluent tank, e.g. septic tank. As shown in Table 1, this patent covers solely wastewater treatment and septic tank application in relation to our invention, but does not use genetically modified bacteria, collection of natural gas, or use of septic waste for electricity production.
Prior Art #2: US Patent 20100314311 Al outlines a method for removing the contamination of C,N
utilizing heterotrophic ammonia-oxidizing bacteria ¨ more specifically, heterotrophic ammonia oxidation bacteria to remove carbon and nitrogen pollutants in wastewater. Table 1 depicts this method's coverage of the use of modified bacteria in wastewater treatment, but does not associate to septic tanks, collection of natural gas, or electricity generation from the waste.
Prior Art #3: CAN Patent CA1234229 Al discloses a process and apparatus for anaerobic biological purification of wastewater containing organic pollutants, purified through a two-reactor series. This 1980's patent is outdated and basically describes a septic tank, which covers septic tank, wastewater treatment, and natural gas collection from our process, but does not utilize the use of genetically modified bacteria or the production of electricity from septic waste.
Prior Art #4: European Patent EP 1232123 Al depicts a biofuel cell using wastewater and active sludge for wastewater treatment. The biofilel cell uses wastewater as a fuel, as electrochemically active microorganisms oxidize the organic substances. Electrons are discharged and transferred to the electrode, allowing electric current to be generated while wastewater is purified. This patent covers wastewater treatment in septic tanks and generation of energy from this purification, but does not use genetically modified bacteria or the collection of natural gas.
It is apparent from the foregoing that the prior art fails to mention all the aspects of this novel process for the appropriate use of energy production.
Claims (13)
1. A septic tank apparatus designed for the production of electricity from biogas with enhanced methane content, such system being comprised of at least one septic tank, the septic tank being completely anoxic and separated from the atmosphere; the tank having an outlet to a conventional drainage and leaching field; the septic tank modified to connect with a biogas collection and power generating component, which comprises:
a. At least one pressure generating gas pump b. A tube having two ends, with the first end being attachable to the septic tank c. Multiple external biogas storage tanks that are each attachable to the second tube end d. A conventional gas generator attachable to a gas storage tank
a. At least one pressure generating gas pump b. A tube having two ends, with the first end being attachable to the septic tank c. Multiple external biogas storage tanks that are each attachable to the second tube end d. A conventional gas generator attachable to a gas storage tank
2. The apparatus of claim 1 wherein the septic tank comprises at least one sludge layer and an upper effluent layer
3. The apparatus of claim 1 wherein the pump is electrically activated
4. The apparatus of claim 1 wherein pressure and temperature sensors are used to monitor the system
5. The apparatus of claim 1 wherein the septic tank is well insulated
6. The apparatus of claim 1 wherein the insulating layer comprises concrete, sand and waterproof membrane materials
7. The apparatus of claim 1 further comprising a means for the introduction of genetically modified anaerobic bacteria cultures
8. A method for the enhancement of methane content in biogas produced by a septic tank system, comprising the steps of:
a. The addition of genetically modified anaerobic, methanogenic bacteria through influent plumbing system b. The capture of biogas with at least one pressure generating pump c. The transfer of biogas through a tube to a connected storage tank d. The combustion of the methane rich biogas in a conventional gas generator to produce electricity
a. The addition of genetically modified anaerobic, methanogenic bacteria through influent plumbing system b. The capture of biogas with at least one pressure generating pump c. The transfer of biogas through a tube to a connected storage tank d. The combustion of the methane rich biogas in a conventional gas generator to produce electricity
9. The method of claim 8 wherein the addition of genetically modified bacteria is completed through the indoor plumbing
10. The method of claim 8 further comprising the step of introducing additional nutrients, buffers and enzymes.
11. The method of claim 8 wherein the capture of biogas is automated by an external controller with pre-set temperature and pressure settings
12. The method of claim 8 wherein the production of electricity via biogas combustion is accomplished with a compatible gas generator
13. The method of claim 8 further comprising the step of electricity storage in batteries for later use
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2837311A CA2837311A1 (en) | 2013-12-19 | 2013-12-19 | Septic waste-to-energy method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2837311A CA2837311A1 (en) | 2013-12-19 | 2013-12-19 | Septic waste-to-energy method and apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2837311A1 true CA2837311A1 (en) | 2015-06-19 |
Family
ID=53477167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2837311A Abandoned CA2837311A1 (en) | 2013-12-19 | 2013-12-19 | Septic waste-to-energy method and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2837311A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107021601A (en) * | 2017-06-09 | 2017-08-08 | 重庆城池通环保科技有限公司 | Septic tank exhaust apparatus |
-
2013
- 2013-12-19 CA CA2837311A patent/CA2837311A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107021601A (en) * | 2017-06-09 | 2017-08-08 | 重庆城池通环保科技有限公司 | Septic tank exhaust apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104289503B (en) | A kind of refuse disposal system and method | |
| CN101928097A (en) | Domestic sewage treatment system for ecological residential quarter | |
| US20120085690A1 (en) | Primary Treatment Unit and System for Maximising the Amount of Methane-Containing Biogas Collected from Sewage | |
| US20120009668A1 (en) | Biogas Capture and/or Collection System | |
| CN203668180U (en) | Sewage treatment system for temporary biotope | |
| CN104326555B (en) | A kind of northern country sanitary sewage multiple treating system and method | |
| CN205635292U (en) | Sewage treatment ware is used at rural family | |
| CN106957130A (en) | A kind of processing method of sanitary sewage and organic solid castoff | |
| CN110683715A (en) | A kind of high-efficiency treatment system for rural domestic sewage recycling | |
| CN108069569A (en) | Combined removable bed clarifier | |
| CN101254979B (en) | Decentralized anaerobic contact treatment process for domestic sewage | |
| CN103864214B (en) | A kind of buried sewage ecological treatment system | |
| CN111762891B (en) | Water purification system and method of artificial floating island coupled with microbial fuel cell | |
| CN101254990B (en) | Passive highly effective dispersant type domestic wastewater treatment complete plant | |
| CN105645694A (en) | On-site treatment system of community organic wastes and method thereof | |
| CN205528274U (en) | Rural sewage treatment system | |
| CA2837311A1 (en) | Septic waste-to-energy method and apparatus | |
| CN101597121B (en) | Distributed domestic sewage treatment reactor and treatment method thereof | |
| CN205773920U (en) | The biological treatment system of heat-engine plant desulfurized waste water | |
| CN201224703Y (en) | Unpowered efficient dispersing domestic sewage treatment complete equipment | |
| CN210945008U (en) | Intelligent biological detention facility of biofuel cell coupling | |
| CN204079695U (en) | A kind of integral solar energy waste disposal plant | |
| CN201092551Y (en) | Underground integral device for treating life sewage water and generating marsh gas | |
| KR102738449B1 (en) | Water purification and environmental resource circulation system using renewable energy from solar desalination/power generation/charging facilities or hydrogen power generation/charging/storage facilities | |
| CN115815282B (en) | A landfill method with low leachate production and rapid stabilization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |
Effective date: 20161221 |