Cleaning & Maintenance

STP Solupak

Reduced BOD in sewage Treatment


  • Maximize Efficiency and Minimize Waste: STP Solupak is a powerful biological sewage treatment powder designed to optimize your vessel’s sewage holding tank system. It significantly reduces BOD (Biochemical Oxygen Demand), enabling shorter holding tank retention times and minimizing residual sludge build-up.
  • Enhanced Operations, Reduced Odors: Experience smoother sailing with STP Solupak. This all-in-one solution promotes efficient waste breakdown, leading to a noticeable reduction in unpleasant odors onboard.
  • Unmatched Bacterial Power: STP Solupak stands out with its 100% active bio-constituents. Our specially formulated blend of microbial cultures aggressively targets and biodegrades a wide range of sewage waste materials, including feces, paper, detergents, fats, oils, grease, and more.
  • Restore & Revitalize Your System: STP Solupak effectively tackles challenges like high organic loading and bacterial population loss (washout or toxic shock). It promotes healthy floc development and stabilizes activated sludge for optimal sewage treatment system function.

STP Solupak also contains a balanced macronutrient package (C:N at ratio of 20:1). This ensures rapid growth and maintenance of activity during start up or periods of low flow (starvation of the biomass). Micronutrients such as trace metals are delivered via a slow release seaweed extract.

The bacteria used in STP Solupak manufactured in a GMP-compliant fermentation facility with an ongoing R&D development programme for strain development.

Extra Benifits

The STP Solupak consortium contains strains resistance to chlorine (from cleaners and sanitizers) up to a concentration of about 20ppm.

In addition, and to protect against accidental release of chlorine, a chlorine quenching additive is also added to offer protection up to 100ppm. To offer yet further protection, a specialised organic ingredient is added to the formulation to bind heavy and toxic light metals from reducing the respiratory activity of the biomass.

STP Solupak is suitable for use in all Type ll and Type lll MSD’s which has a need for biological sewage treatment powder. Helps to stay compliant to Marpol ANNEX IV

STP Solupak is offered in convenient to meter and dose 100g cold water soluble PVA sachets.

Packing and Product numbers

GNC Marine supplies STP Solupak in 2kg or 10kg packaging

10kg: 80004-1
2kg: 80002-2

IMPA CODE:  550680 (10kg)

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    Priceless Experience

    Our staff and partners each have more than 25yrs experience in either chemical, biological, biocidal products, cleaning equipment, service provision and global logistics.

    Custom Packages

    We design, manufacture and supply specialized cleaning, maintenance and biosecurity products with proven performance to the marine and offshore industries.


    We have a history of working in partnership with the industry’s key technology providers, distributors and OEM’s. We can deliver products to you in all the key international ports

    Advanced Concentrated Bioactive Powder Formulation for Sewage Waste Management

    Marine sewage waste management is a critical issue that requirres attention and the concern of the environment. The discharge of untreated sewage into sea or other water bodies can lead to serious health and ecological problems, including the spread of disease and the destruction of aquatic ecosystems.

    To address these issues, advanced technologies have been developed to effectively manage sewage waste and prevent its harmful impact on the environment. One of these technologies is the use of concentrated bioactive powder formulations, which can be used in marine sewage treatment systems.

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    What is a Concentrated Bioactive Powder Formulation?

    Concentrated bioactive powder formulation is a blend of patented bacterial strains specifically developed to deal with sewage waste.

    This advanced technology works by using natural bacteria to break down and treat the organic matter present in sewage, converting it into a safer and more manageable form.

    The concentrated nature of the formulation ensures a high number of active bacterial cells, providing maximum treatment efficiency and faster results.

    The concentrated bioactive powder formulation contains a unique blend of bacterial strains that have been carefully selected and patented for their ability to efficiently treat sewage waste.
    These bacterial strains have been shown to have excellent degradation capabilities for a wide range of organic pollutants, including fats, oils, and grease (FOG), volatile fatty acids (VFA), and total nitrogen.

    The formulation also contains essential nutrients and growth factors to support the growth and activity of the bacteria, ensuring optimal performance and treatment efficiency.

    The Techology Behind the Concentrated Bioactive Powder Formulation

    The concentrated bioactive powder formulation is added to the sewage treatment process to help break down and treat the organic matter present in the waste.

    The bacteria in the formulation begin to multiply and consume the organic matter, converting it into a safer and more manageable form. The end result is treated sewage that is safe for discharge into the environment and meets all regulatory requirements.

    What is a Concentrated Bioactive Powder Formulation?

    The concentrated nature of the formulation ensures a high number of active bacterial cells, providing maximum treatment efficiency and faster results.

    The technology uses natural bacteria to treat sewage waste, avoiding the use of harsh chemicals and minimizing potential harm to the environment.

    The formulation is effective for a wide range of organic pollutants, making it suitable for a variety of sewage treatment applications.
    The end result of the treatment process is safe for discharge into the environment and meets all regulatory requirements.
    The concentrated bioactive powder formulation is a cost-effective solution for sewage waste management, providing a high return on investment and reducing operational costs.

    The concentrated bioactive powder formulation is a cutting-edge technology that provides a natural, efficient, and cost-effective solution for sewage waste management. The advanced blend of patented bacterial strains is specifically designed to deal with sewage waste, converting it into a safer and more manageable form.

    The technology offers a wide range of benefits, including efficient treatment, a natural process, a wide range of applications, safety for discharge, and cost-effectiveness. If you are looking for a solution to manage your sewage waste, consider the concentrated bioactive powder formulation.

    The Crucial Role of Solubility in Activated Bio Powder

    In the realm of marine sewage treatment systems, the quest for optimal efficiency and environmental sustainability remains paramount. At the forefront of this endeavor lies the often-overlooked factor of activated bio powder solubility – a pivotal element that can significantly impact the effectiveness of wastewater treatment processes and the importance of solubility in activated bio powder and its pivotal role in advancing the marine industry’s wastewater management practices.

    Understanding the Basics of Activated Bio Powder

    Activated bio powder, a potent blend of microorganisms, enzymes, and natural components, forms the core of modern marine sewage treatment systems. Its primary function is to break down organic matter and pollutants present in wastewater, rendering them harmless and environmentally friendly. However, the efficiency of this process is inextricably linked to the solubility of the bio powder itself.

    The Unveiled Significance of Solubility

    Solubility, a term often reserved for chemical compounds, takes on a whole new dimension when applied to activated bio powder. In this context, solubility refers to the bio powder’s ability to dissolve and disperse uniformly within wastewater. This seemingly simple attribute plays a pivotal role in determining how effectively the bio powder’s active components are distributed throughout the wastewater.

    Optimal Dispersion, Maximum Efficiency

    When activated bio powder exhibits high solubility, it translates into a faster and more even distribution of microorganisms and enzymes across the entire wastewater volume. This enhanced dispersion directly leads to accelerated degradation of organic matter and pollutants, resulting in reduced treatment times and higher treatment efficiencies. Moreover, efficient solubility ensures that no pockets of untreated wastewater are left behind, eliminating the risk of incomplete treatment and potential harm to marine ecosystems.

    Environmental Harmony and Regulatory Compliance

    The marine industry operates within stringent environmental regulations that demand the highest standards of wastewater treatment. Activated bio powder with superior solubility not only ensures compliance with these regulations but also paves the way for proactive environmental stewardship. By minimizing the discharge of pollutants and enhancing the breakdown of contaminants, systems leveraging high-solubility bio powder contribute to the preservation of marine biodiversity and the overall health of our oceans.

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      Choosing the Right Solution

      As the marine industry charts a course toward greener practices, the selection of the right activated bio powder cannot be overstated. Opting for a bio powder with proven high solubility guarantees an edge in wastewater treatment efficiency, compliance with evolving regulations, and a reduced environmental footprint. STP Solupak from GNC Marine has a solubility of 96%, prioritizes solubility as a key feature underscores a commitment to excellence and sustainability.
      In the intricate world of marine sewage treatment systems, every detail matters. The solubility of activated bio powder emerges as a paramount factor that underpins treatment efficiency, environmental harmony, and regulatory adherence. By embracing bio powder with optimal solubility, the marine industry can revolutionize its wastewater treatment practices, propelling us towards cleaner oceans, healthier ecosystems, and a more sustainable future.


      BOD is a fundamental indicator of the organic content in wastewater. It measures the amount of oxygen that microorganisms need to break down organic matter present in the water. In essence, BOD quantifies the level of biodegradable pollutants in the water, reflecting the potential for oxygen depletion in receiving water bodies like rivers or lakes.
      A higher BOD value indicates a larger load of organic matter and a greater demand for oxygen-consuming microbial activity during decomposition.
      COD is another significant parameter that assesses the amount of oxygen required to chemically oxidize both biodegradable and non-biodegradable organic substances in water. Unlike BOD, COD measures not only the biodegradable fraction but also includes complex organic compounds that may not readily break down.
      This makes COD a valuable tool for gauging the overall pollution level in wastewater. High COD values suggest the presence of hard-to-treat pollutants and can be an indicator of the potential impact on the environment.
      TSS refers to the concentration of solid particles suspended in wastewater. These particles include a wide range of materials such as organic matter, inorganic compounds, and microorganisms.
      TSS measurement is crucial as it helps evaluate the effectiveness of primary treatment processes that aim to remove larger solid particles from the wastewater.
      Elevated TSS levels can lead to adverse environmental impacts, such as reduced light penetration in water bodies and interference with aquatic life.
      The pH level of wastewater indicates its acidity or alkalinity. pH influences various biological and chemical reactions that occur during the treatment process. Extremes in pH can affect the efficiency of microbial activity and the stability of treatment chemicals. Maintaining an appropriate pH range is essential to ensure optimal treatment performance.
      Ammonia and nitrogen compounds are common contaminants in wastewater. Ammonia (NH3) can be toxic to aquatic life and is a byproduct of microbial decomposition. Nitrogen compounds like nitrites and nitrates can contribute to eutrophication, causing excessive plant growth in water bodies. Monitoring ammonia and nitrogen levels aids in preventing these harmful effects.
      Phosphorus is a nutrient that can lead to eutrophication if present in excessive amounts. It promotes the growth of algae and aquatic plants, which can lead to oxygen depletion and negatively impact aquatic ecosystems. Accurate measurement of phosphorus concentration helps control nutrient loading and mitigate eutrophication.
      Wastewater treatment plants play a vital role in safeguarding the environment by treating and purifying sewage before it is released back into natural water bodies. The effectiveness of these treatment processes relies on accurate measurement and monitoring of various parameters that indicate the level of contamination and the efficiency of treatment. Among these parameters, Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), and Total Suspended Solids (TSS) are some of the most crucial factors that provide insights into the quality of wastewater and the performance of treatment systems.

      A successful wastewater treatment process hinges on precise measurement and monitoring of key parameters like BOD, COD, TSS, pH, ammonia, nitrogen compounds, and phosphorus. These measurements offer insights into the nature and extent of pollution in wastewater, guide treatment strategies, and ensure compliance with environmental regulations. By comprehensively understanding these measurement factors, wastewater treatment plants can contribute significantly to safeguarding the environment and maintaining the health of our water bodies.

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