Synopsis
The Sewage from the Network is collected in the lifting station for processing at the Sewage Treatment Plant. The constant flow of influent to the plant in the form of Network results in water being held up at Lifting station. Water being filled due to surcharge flow of sewage causes Anerobic Reaction to the water. The sewage water contains Sulphur from the Human waste in the form of Organic Sulfides. With no agitation or constant mixing of water, Anerobic reactions occurs in the lifting station. The combination of Organic Sulfides along with the Anerobic reaction results in the formation of the lethal H2S Gas. The H2S can start to form Sulfuric acid in the lifting station and the wastewater treatment facilities which will corrode the cement and steel structures over a period. Hydrogen sulfide gas in the sewer atmosphere may be adsorbed in the thin film of water that normally covers the sewer walls and may be partially oxidized to sulfuric acid by bacteria of the genus Thiobacillus.
Methodology
Oda Logger was installed at the STP inlet for a period of 1 week to understand the trends of readings for Hydrogen Sulphide which was raising odor complaints and also was a HSE concern for the personnel that were operating the plant. The presence of Hydrogen Sulphide (H2S) had also impacted the compliance and regulatory requirements for operating the plant. The trends in the occurance of H2S was recorded and it was comparred with the results to provide conclusion on the impact and performance of Bio Organic Catalyst (BOC).
Dosing Plan
It was observed that a dosing of 1ppm to the plant capacity and biological loading (BOD), Biological Oxygen Deamand was estimated. The first 2 weeks the dosing was done for 2 ppm to ensure that all the organic loading in the Sewage Treatment Inlet tank present is remedied and post it the dosing was continued with 1ppm and reduction of H2S was recorded. After Continous dosage of 3 months the plant had stabilized with the reading at the STP Inlet being reduced to over 95% and the occurance of spike’s with the additon of inlet was completed negated within controllable limits.
Results
Frequently Asked Question:
The treatment plant was experiencing challenges managing variable influent conditions—particularly due to intermittent high organic loading and shock hydraulic flows. These fluctuations pushed the system beyond its design capacity, leading to poor nitrogen removal and inconsistent effluent quality.
From a technical perspective, these operational stresses suppressed aerobic microbial activity and destabilized the nitrification-denitrification cycle, especially in zones with limited oxygen availability. A catalyst was introduced to improve biological stability and oxygen dynamics without altering the plant’s physical infrastructure.
The dosing was strategically calculated based on the organic load—measured by the Biological Oxygen Demand (BOD) in the incoming sewage. A concentration of 2 ppm was selected to match the BOD profile, ensuring optimal microbial response without oversaturation.
Technically, this method aligns with proportional dosing principles, where the catalytic input correlates directly with organic load demand. This ensures that the oxygen transfer enhancement and enzymatic activity remain synchronized with real-time influent characteristics.
Operators monitored changes in key indicators—ammonia nitrogen (NH₃-N), total nitrogen (TN), and general effluent clarity. Treated water was tested regularly and compared to baseline data recorded prior to catalyst introduction.
From a performance analysis standpoint, reductions in NH₃-N and TN signal restored nitrification efficiency and increased microbial conversion rates. These metrics provide a reliable basis for assessing the effectiveness of biological augmentation under non-steady flow conditions.
Within 30 days, ammonia nitrogen in the treated water was reduced by 87%, and total nitrogen decreased by 70%. By day 45, ammonia nitrogen consistently remained below 5 ppm, significantly improving compliance with water quality standards.
These results reflect not just accelerated nitrogen removal but also improved oxygen utilization and reduced inhibitory build-up in the system. The catalyst created a more resilient microbial ecosystem capable of responding to daily influent variability.
The catalyst enhanced oxygen transfer efficiency through nano-scale oxygen delivery, which in turn stimulated aerobic microbial populations responsible for converting ammonia into nitrate. Concurrently, organic load was broken down more efficiently, preventing accumulation of materials that typically inhibit nitrifiers.
Technically, this improved the dissolved oxygen gradient across microbial colonies, enabling a more effective nitrification process followed by simultaneous denitrification, all without the need for external carbon sources or pH adjusters.
No physical modifications were needed. The catalyst was introduced seamlessly into the existing process stream, allowing operations to continue without interruption or reconfiguration.
This plug-and-play nature is due to the catalyst’s ability to integrate with existing biological pathways, rather than requiring mechanical aeration upgrades or retrofits. Its impact is biological and biochemical—enhancing what the current infrastructure already facilitates.
Dosing was anchored to the average BOD load, and due to the catalyst’s broad operational flexibility, no real-time adjustments were necessary. Operators simply monitored effluent trends to confirm consistent performance.
The catalyst’s wide operational window allows it to remain effective across a range of organic and hydraulic fluctuations, reducing the need for precision control or responsive re-dosing, which is often required in conventional chemical programs.
Aside from improved nitrogen removal, the plant reported reduced odors, improved sludge handling, and fewer process disturbances. The microbial system appeared more stable and less prone to collapse during peak flows.
This indicates that enhanced oxygenation and enzymatic breakdown not only target nitrogen compounds but also mitigate broader operational issues—such as sludge bulking, anoxic dead zones, and organic overloading—without increasing energy demand.
Yes. By improving biological efficiency and reducing reliance on chemical treatments or emergency pump-outs, operational costs are lowered. Moreover, enhanced effluent stability reduces the risk of regulatory penalties.
Technically, improved oxygen utilization means aeration energy demands are reduced, and better sludge settling reduces solids handling costs—two of the highest cost centers in municipal wastewater treatment.
Absolutely. Facilities experiencing load variability, ammonia non-compliance, or aeration limitations can benefit from this approach. With minimal adjustment to dosing, the catalyst can be applied across a wide range of biological systems.
What makes this approach scalable is its focus on enhancing endogenous microbial activity and oxygen delivery—core parameters in any biological treatment system. Site-specific conditions can be mapped through initial BOD and nutrient profiling to replicate results reliably.