Cleaner for reducing greenhouse gas methane emissions from septic tank and use thereof

By adding a cleaning agent containing specific ingredients to the septic tank, the problem of methane-producing bacteria is inhibited, thus solving the problem of methane emissions from the septic tank and achieving the effects of greenhouse gas emission reduction and environmental protection.

WO2026137340A1PCT designated stage Publication Date: 2026-07-02PARADISE INTERNATIONAL ECOLOGY TECHNOLOGY CO LTD +1

Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
PARADISE INTERNATIONAL ECOLOGY TECHNOLOGY CO LTD
Filing Date
2024-12-26
Publication Date
2026-07-02

AI Technical Summary

Technical Problem

Septic tanks contain a large number of anaerobic bacteria, which lead to the generation and emission of methane, making it a significant source of greenhouse gases. Existing technologies are unable to effectively suppress methane emissions.

Method used

A cleaning agent containing aloe vera extract, seawater-derived mineral elements, sodium carbonate, sodium bicarbonate, sodium thiosulfate, citric acid, lemon oil, sodium citrate, ionic surfactants, and calcium oxide is provided. When added to a septic tank, it inhibits the activity of methanogenic bacteria.

Benefits of technology

It effectively inhibits methane formation in septic tanks, reduces greenhouse gas emissions, mitigates the impact of climate change, and is safe and easy to use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to a cleaner for reducing greenhouse gas methane emissions from a septic tank. The cleaner comprises, in percentage by weight: 1-5 wt% of an aloe extract, no more than 1 wt% of a seawater-extracted mineral element, 1-10 wt% of sodium carbonate, 1-10 wt% of sodium bicarbonate, 1-10 wt% of sodium thiosulfate, 1-5 wt% of citric acid, 1-3 wt% of lemon oil, 1-7 wt% of an ionic surfactant, 1-5 wt% of calcium oxide, and pure water added to make up to a total of 100 wt%. By putting the cleaner of the present application into a septic tank, methanogenic bacteria in the septic tank can be effectively inhibited, thereby achieving the effect of reducing greenhouse gas methane emissions, relieving the environmental pressure, mitigating the impact of climate variation, and contributing to environmentally sustainable development.
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Description

Cleaning agents that reduce methane emissions from septic tanks and their uses Technical Field

[0001] This application relates to a cleaning agent and its uses, particularly a cleaning agent and its uses for reducing methane emissions from septic tanks. Background Technology

[0002] Methane is one of the most potent greenhouse gases known. In addition to combustion and industrial production processes, many agricultural facilities, such as the bottom mud of aquaculture ponds, animal manure collection ponds, and composting sites, are also major sources of methane emissions.

[0003] In human-inhabited environments (homes, offices, public spaces, etc.), septic tanks are also hotspots for methane emissions. Therefore, the greenhouse gas inventory standard (ISO 14064-1) lists septic tanks as a mandatory inventory item. All greenhouse gas inventory reports must list all septic tanks in the organization and calculate their methane emissions. Thus, reducing methane emissions from septic tanks is a crucial step in achieving net-zero carbon emissions.

[0004] The reason why these places produce large amounts of methane is because there are a large number of anaerobic bacteria (methane-producing bacteria), which produce methane during anaerobic fermentation.

[0005] Therefore, how to suppress methane in septic tanks is a direction that industry professionals should strive to develop. Summary of the Invention

[0006] The primary objective of this application is to reduce methane emissions from agricultural facilities such as septic tanks and anthropogenic environments. These locations often contain large numbers of anaerobic bacteria, which produce methane during anaerobic fermentation, thus becoming part of the greenhouse gas spectrum. Methane is a potent greenhouse gas with a significant impact on climate change.

[0007] To achieve the above objectives, one embodiment of this application provides a cleaning agent for reducing methane emissions from septic tanks, comprising, by weight percentage: 1-5 wt% aloe vera extract; no more than 1 wt% seawater-derived mineral elements; 1-10 wt% sodium carbonate; 1-10 wt% sodium bicarbonate; 1-10 wt% sodium thiosulfate; 1-5 wt% citric acid; 1-3 wt% lemon oil; 1-7 wt% ionic surfactant; 1-5 wt% calcium oxide; and purified water added to a total of 100 wt%.

[0008] In another embodiment of this application, the cleaning agent contains 1 to 5 wt% sodium citrate.

[0009] In another embodiment of this application, the ionic surfactant contains not less than 1 wt% coconut oil extract fatty acids.

[0010] In another embodiment of this application, the seawater-extracted mineral elements include no more than 0.0243 wt% magnesium, no more than 0.0078 wt% potassium, and no more than 0.0062 wt% sodium.

[0011] In another embodiment of this application, the effective concentration of the cleaning agent for inhibiting methane is 500 ppm to 1000 ppm.

[0012] In another embodiment of this application, the cleaning agent is used to dispose of the toilet.

[0013] In another embodiment of this application, the cleaning agent is used to be added to the septic tank of the community.

[0014] In another embodiment of this application, the cleaning agent is used to be added to the septic tank of a multi-family dwelling.

[0015] In another embodiment of this application, the cleaning agent is used to be added to the septic tank of the apartment.

[0016] In another embodiment disclosed in this application, the cleaning agent is used to be added to the septic tank of the office building.

[0017] As stated above, the efficacy of this application lies in the fact that adding the cleaning agent of this application to the septic tank can effectively inhibit the methane-generating bacteria in the septic tank, thereby reducing methane emissions. Reducing greenhouse gas emissions can reduce environmental pressure, help mitigate the impact of climate change, create sustainable environmental development, and make a positive contribution to environmental protection and green energy. Attached Figure Description

[0018] Figure 1A shows the change in methane generation after 35 days at a concentration of 0 ppm of the cleaning agent of the present invention.

[0019] Figure 1B shows the change in methane generation after 35 days of monitoring at a concentration of 500 ppm for the cleaning agent of the present invention.

[0020] Figure 1C shows the change in methane generation after 35 days of monitoring at a concentration of 1000 ppm of the cleaning agent of the present invention.

[0021] Figure 1D shows the change in methane generation after 35 days of monitoring at a concentration of 2000 ppm of the cleaning agent of the present invention. Detailed Implementation

[0022] To make the above and other objects, features and advantages of this application more apparent and understandable, preferred embodiments of this application are described below in detail with reference to the accompanying drawings:

[0023] This application discloses a cleaning agent for reducing methane emissions from septic tanks, which comprises, by weight percentage:

[0024] (1) 1-5 wt% aloe vera extract;

[0025] (2) No more than 1 wt% of seawater-derived mineral elements;

[0026] (3) 1-10 wt% sodium carbonate;

[0027] (4) 1-10 wt% sodium bicarbonate;

[0028] (5) 1-10 wt% sodium thiosulfate;

[0029] (6) 1-5 wt% citric acid;

[0030] (7) 1-3 wt% lemon oil;

[0031] (8) 1-5 wt% sodium citrate;

[0032] (9) 1-7 wt% ionic surfactant;

[0033] (10) 1–5 wt% calcium oxide; and

[0034] (11) Add to a total of 100 wt% pure water.

[0035] The ionic surfactant contains not less than 1 wt% coconut oil extract fatty acids.

[0036] The seawater-derived mineral elements include no more than 0.0243 wt% magnesium, no more than 0.0078 wt% potassium, and no more than 0.0062 wt% sodium.

[0037] The cleaning agent for reducing methane emissions from septic tanks in this application can be added to the toilet in a form similar to toilet cleaner. In addition to cleaning the toilet, when the cleaning agent is discharged into the septic tank, it can inhibit methane-producing bacteria in the septic tank, thereby reducing methane emissions.

[0038] The cleaning agent for reducing methane emissions from septic tanks in this application can also be applied to septic tanks in residential communities, apartment buildings, office buildings, or other areas.

[0039] The experiment on reducing the greenhouse gas methane in this application uses a laboratory anaerobic fermentation device to produce methane. By analyzing the effect of adding different concentrations of natural aloe vera cleaner on inhibiting biogenic methane emissions, the effective dosage of natural aloe vera cleaner was determined. At the same time, the bacteria in the anaerobic fermentation device after treatment with natural aloe vera cleaner were analyzed to determine the possible mechanism by which natural aloe vera cleaner inhibits biogenic methane emissions.

[0040] The following are the experimental steps for the cleaning agent in this application to inhibit the formation of the greenhouse gas methane:

[0041] 1. Methane Production: 100 grams of cow dung are placed in a sealed fermentation bottle containing 1 liter of distilled water. Anaerobic fermentation is carried out in a laboratory incubator at a temperature of 25±1℃. The fermentation bottle is equipped with a quick-turn ball valve and connected to another gas collection bottle via a pipeline.

[0042] 2. Methane Concentration Detection: First, turn off the valve on the fermentation flask and remove the gas collection bottle. Then, place the probe of the methane concentration detector into the gas collection bottle to measure the methane concentration.

[0043] 3. Effect of different concentrations of plant extract cleaners on biomethane production: The plant extract cleaners were serially diluted with distilled water, and the diluted solution was added to a fermentation bottle. After a period of time, the methane production was measured using a methane concentration detector.

[0044] 4. Effect of plant extract cleaners on bacterial growth in methane production flasks: Liquids from fermentation flasks containing different concentrations of plant extract cleaners were taken out, stained, and the number of bacteria was counted under a microscope.

[0045] 5. Effect of plant extract cleaning agents on bacterial phase in methane production flasks: The liquid in the fermentation flask was removed, and the DNA of the bacteria in the liquid was extracted with nucleic acid extraction reagent. Then, next-generation sequencing (NGS) was used to sequence the DNA and analyze the bacterial species and abundance.

[0046] Experimental results:

[0047] The cleaning agent of this application was tested for changes in the formation of greenhouse gas methane at different concentrations (0ppm, 500ppm, 1000ppm, 2000ppm) for 35 days. In Figures 1A to 1D, #1 refers to the first group, #2 to the second group, #3 to the third group, and #4 to the fourth group. The results of #1 to #4 show that the inhibition of methane formation is significantly reduced at 500ppm and 1000ppm, while it shows a slight increase at 2000ppm.

[0048] Therefore, as can be seen from the above, cleaning agent concentrations of 500ppm, 525ppm, 550ppm, 575ppm, 600ppm, 625ppm, 650ppm, 675ppm, 700ppm, 725ppm, 750ppm, 775ppm, 800ppm, 825ppm, 850ppm, 875ppm, 900ppm, 925ppm, 950ppm, 975ppm, or 1000ppm can effectively suppress methane.

[0049] As shown in Figures 1A to 1D, preliminary results indicate that the green and environmentally friendly antibacterial cleaner has the best effect in inhibiting the formation of the greenhouse gas methane at a minimum effective concentration of 1000 ppm. Based on the current preliminary results, the green and environmentally friendly antibacterial cleaner inhibited methane formation in approximately 11.4% of septic tanks and biogas digesters at a concentration of 1000 ppm.

[0050] Based on the above, the advantages of this application are as follows:

[0051] 1. Natural ingredients: Contains natural aloe vera extract, seawater-derived minerals, and coconut oil-derived fatty acids, etc. It is non-toxic and meets the evaluation standards of the World Health Organization, making it safe and reliable to use.

[0052] 2. Reduce greenhouse gas emissions: In environments such as septic tanks, it can effectively inhibit the activity of methane-producing bacteria, thereby reducing methane emissions and contributing to greenhouse gas emission reduction.

[0053] 3. Convenient to use: Designed in a form similar to toilet cleaner, users can easily clean the toilet and discharge it directly into the septic tank. This greatly reduces the manpower and time required to send personnel to directly add the environmentally friendly antibacterial cleaner into the septic tank, and also avoids the problem of greenhouse gas methane being directly released when the septic tank is opened.

[0054] The embodiments described above are merely illustrative of this application and are not intended to limit the scope of this application. Any modifications or variations made to the embodiments that do not depart from the spirit of this application are within the scope of protection intended by this application.

[0055] Symbol Explanation

[0056] none.

Claims

1. A cleaner for reducing the emission of the greenhouse gas methane from a septic tank, which is dispensed in percentage by weight, characterized in that, Include: 1–5 wt% aloe vera extract; No more than 1 wt% of seawater-derived mineral elements, including magnesium, sodium and potassium; 1-10 wt% sodium carbonate; 1-10 wt% sodium bicarbonate; 1-10 wt% sodium thiosulfate; 1-5 wt% citric acid; 1-3 wt% lemon oil; 1–7 wt% ionic surfactant; 1-5 wt% calcium oxide; and Add to a total of 100 wt% pure water.

2. The cleaner for reducing the emission of the greenhouse gas methane from a septic tank according to claim 1, characterized by, The cleaning agent contains 1-5 wt% sodium citrate.

3. The cleaner for reducing the emission of the greenhouse gas methane from a septic tank according to claim 2, characterized by, The ionic surfactant contains no less than 1 wt% coconut oil extract fatty acids.

4. The cleaner for reducing the emission of the greenhouse gas methane from a septic tank according to claim 1, characterized by, The seawater-derived mineral elements include no more than 0.0243 wt% magnesium, no more than 0.0078 wt% potassium, and no more than 0.0062 wt% sodium.

5. The cleaner for reducing the emission of the greenhouse gas methane from a septic tank according to claim 1, characterized by, The cleaning agent has an effective methane-suppressing concentration of 500 ppm to 1000 ppm.

6. The use of a cleaning agent for reducing methane emissions from septic tanks according to any one of claims 1 to 4, characterized in that, The cleaning agent is for use in the toilet.

7. The use of a cleaning agent for reducing methane emissions from septic tanks according to any one of claims 1 to 4, characterized in that, The cleaning agent is intended for use in the septic tanks of the residential area.

8. Use of a cleaner for reducing the emission of the greenhouse gas methane from a septic tank according to any one of claims 1 to 4, characterized in that The cleaning agent is intended for use in the septic tanks of apartment buildings.

9. The use of a cleaning agent for reducing methane emissions from septic tanks according to any one of claims 1 to 4, characterized in that, The cleaning agent is intended for use in the apartment's septic tank.

10. Use of a cleaner according to any one of claims 1 to 4 for reducing the emission of the greenhouse gas methane from a septic tank, characterized in that, The cleaning agent is intended for use in the septic tanks of the office building.