Biological Home Septic Tank: Monitoring BOD, COD, and Odor Post-Application of Formula Bio Septic Tank

A biological home septic tank is a modern solution for households looking to reduce pumping frequency and eliminate unpleasant odors. By using Formula Bio Septic Tank from Biosolution, you no longer need to worry about domestic waste issues. This article will technically discuss how to monitor important parameters such as BOD, COD, and odor after product application, ensuring your septic tank performs optimally.

Why Are BOD, COD, and Odor Parameters Important?

BOD (Biochemical Oxygen Demand) and COD (Chemical Oxygen Demand) are key indicators of wastewater quality. BOD measures the amount of oxygen required by microorganisms to biologically decompose organic matter, while COD measures the oxygen required for chemical oxidation of all organic compounds. The higher the BOD and COD values, the more polluted the wastewater. Pungent odors in septic tanks are usually caused by gases such as hydrogen sulfide (H2S) and ammonia (NH3) produced by pathogenic bacteria during anaerobic decomposition. By lowering BOD and COD, odors will also drastically decrease.

Relationship between BOD/COD and Septic Tank Performance

A healthy septic tank has a balanced BOD/COD ratio. If BOD is too high, microbial decomposition activity is not optimal. Conversely, if COD is high, there may be toxic chemicals inhibiting bacterial work. Formula Bio Septic Tank contains an anaerobic and aerobic consortium that works synergistically to reduce both parameters by 60-80% within 30 days.

Mechanism of Action of Formula Bio Septic Tank in Reducing BOD and COD

This product consists of two types of microbial consortia: anaerobic to decompose waste at the bottom of the septic tank, and aerobic to decompose waste on the surface. The anaerobic consortium, such as Clostridium spp. and Bacteroides spp., breaks down complex organic compounds into volatile fatty acids, which are then converted into methane and carbon dioxide. Meanwhile, the aerobic consortium, such as Bacillus spp. and Pseudomonas spp., oxidizes remaining organic compounds into CO2 and H2O, thereby significantly reducing BOD.

Gradual Degradation Process

After being poured into the toilet (250 ml per household septic tank, every month at night), the bacteria become active within 2-4 hours. Within 7 days, BOD can drop by 40%, and within 30 days reach 70%. COD also decreases as organic chemical compounds are broken down. Ammonia and H2S odors begin to diminish after 3-5 days because bacteria convert nitrogen compounds into odorless nitrates.

How to Monitor Parameters Post-Application

To ensure the product works optimally, you need to perform simple monitoring. Here are the steps:

Tools and Materials

• pH meter or litmus paper
• Thermometer (ideal temperature 25-35°C)
• Wastewater sample bottle from septic tank outlet

Visual and Sensory Indicators

• Odor: If the odor disappears within 1 week, degradation is proceeding well.
• Water color: Clearer wastewater indicates a decrease in COD.
• Sludge volume: Sludge decreases as it is decomposed by bacteria.

Simple Laboratory Measurement

For accuracy, you can take a wastewater sample and send it to a laboratory for BOD/COD testing. However, generally, if the odor disappears and the water is not cloudy, the parameters have improved.

Expected Results: Reduced Pumping Frequency, Odor Gone

With monthly routine application, your biological home septic tank will have several advantages:

• Reduced pumping frequency: Decomposed sludge reduces solid volume, so pumping is only needed once every 1-2 years (usually every 6-12 months).
• Odor gone: H2S and NH3 gases are suppressed, making the area around the septic tank comfortable.
• Environmentally safe: The discharged wastewater is more environmentally friendly, not polluting the soil.

Case Study: Household in a Housing Complex

A user in Tangerang reported that after 2 months of use, the odor from the septic tank completely disappeared, and pumping, which was usually needed every 6 months, was not required for up to 1.5 years. BOD testing showed a decrease from 250 mg/L to 80 mg/L.

Factors Affecting the Effectiveness of Septic Tank Decomposers

Several things can affect bacterial performance:

• Use of harsh chemicals: Bleach, disinfectants, and chlorine-based floor cleaners can kill bacteria. Avoid pouring these substances into the toilet.
• Temperature: Bacteria work optimally at 25-35°C. In cold areas, the process is slower.
• pH: Ideal pH is 6.5-8.0. If too acidic or alkaline, add dolomite lime.
• Water volume: Do not flush too much water at once as it can dilute bacterial concentration.

Tips for Optimal Application for Households and Buildings

• Application time: At night before bed so bacteria work without water usage disturbance.
• Dosage: 250 ml per household septic tank. For buildings, adjust according to tank volume (consult with Biosolution team).
• Combination with other products: For maximum results, also use Bio Liquid Drain Cleaner for pipe drains.
• Avoid solid waste disposal: Do not flush wet wipes, diapers, or cooking oil into the toilet.

Conclusion

Monitoring BOD, COD, and odor parameters after applying Formula Bio Septic Tank is an important step to ensure your biological home septic tank functions optimally. With regular use, you can enjoy a more durable septic tank, reduced pumping frequency, and an odor-free environment. This product is a practical, microbiology-based solution that is safe and effective. If you want further consultation on dosage or application methods, contact the Biosolution team via WhatsApp.

Also read: How Waste-Decomposing Bacteria Work and Formula Bio Septic Tank Product.

For more information, visit Biosolution official website or Ministry of PUPR guidelines on septic tanks.

FAQ

Q: How long after application does the septic tank odor disappear? A: Usually, the odor starts to diminish within 3-5 days and completely disappears within 1-2 weeks depending on initial conditions. Make sure you do not use harsh chemicals that can inhibit bacterial activity.

Q: Is Formula Bio Septic Tank safe for pipes and the environment? A: Very safe. This product contains natural bacteria that are non-corrosive to PVC or concrete pipes. The resulting wastewater is also more environmentally friendly because BOD/COD drops drastically.

Q: Can it be used for concrete or fiber septic tanks? A: Yes, this product is suitable for all types of septic tanks, whether concrete, fiberglass, or plastic. Ensure the dosage matches the tank volume.

Q: Do I need to pump after using the product? A: No, in fact, pumping frequency decreases. However, if sludge has accumulated before application, it is advisable to pump first and then start using the product regularly.

Q: What if I forget to apply for a month? A: No problem, just continue with the next month's application. However, for optimal results, regular monthly application is recommended.