Robust microbial formulation for sewage treatment

Rapid urbanization, higher population densities and industrialization have severely burdened sewage treatment plants in the country. One of the major causes of concerns in STPs is that indigenous microbial populations are not efficient enough to handle high organic loads which is typical in urban sewage waters.


Cleanmaxx STP is a consortium of highly adaptable, tenacious microbes in sewage treatment that have the ability to degrade high organic loads. This results in maximum BOD removal and minimum sludge production. Odor issues, often attributed to hydrogen sulphide production & ammonia in sewage treatment units are prevented by Cleanmaxx STP by complete and rapid degradation of organics which prevents putrefaction. Sewage water often contains pathogenic loads that are a major health risk if left untreated. The microbes in sewage treatment product – Cleanmaxx STP naturally compete with pathogens in sewage water and prevent their growth. Cleanmaxx STP can be used in any sewage water treatment / pumping station set up, with no hardware modification required.


1. The Cleanmaxx STP contains microbes in sewage treatment that handles high organic loads for sewage water treatment handles high organic loads with maximum BOD reduction with minimum sludge production.
2. The microbes in Cleanmaxx STP improves color and prevent odour from noxious gases like hydrogen sulphide and ammonia.
3. Does not requires any modification in hardware set up & can resist shock loads.

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Our STP collected sewage from the residential and commercial buildings in the neighbourhood. Organica Biotech’s product CleanMaxx, resulted in 95% reduction in ammoniacal nitrogen, 80-85% reduction in the COD and BOD levels of the treatment plant and curtailed the issue of excessive foaming. We are extremely elated with the performance of this product which uses microbes in sewage treatment.
STP in Delh



Cleanmaxx STP

Rapid urbanization, higher population densities and industrialization have severely burdened sewage treatment plants in the country. Download complete guide on using  Organica Biotech’s  solution of using microbes in sewage treatment pdf here.


How does Cleanmaxx® STP work?

Cleanmaxx® STP mode of action essentially comprises of two major steps. The initial step involves the breakdown of complex compounds into simple polymers. These polymers are further degraded to form carbon dioxide and water. The microbes in sewage treatment performs these functions.

Are the bacteria present in Cleanmaxx® STP genetically modified?

The microbes present in Cleanmaxx® STP are not genetically modified. These are natural isolates that are specially selected for their desirable traits. The microbes in sewage treatment are found to be effective.

Is Cleanmaxx® STP safe?

Microbes present in Cleanmaxx® STP are GRAS organisms (Generally Recognised As Safe). These are completely safe without any pathogenicity towards humans, animals, and plants. The microbes in sewage treatment effectively degrades waste.

What type of pollutants can be treated by using Cleanmaxx® STP?

A major portion of all man-made and natural contaminants present in municipal wastewater can be effectively degraded by Cleanmaxx® STP.

What is the dosage of Cleanmaxx® STP?

Dosage of Cleanmaxx® STP is highly dependent on parameters like hydraulic and organic load, plant design, etc. Generally, the dosage of microbes in sewage treatment varies from 0.1 ppm to 5 ppm depending upon the conditions in the sewage treatment plants.

Is Cleanmaxx® STP a powder or liquid?

Microbes in Cleanmaxx® STP are microencapsulated in powder form. This confers the virtue of extended shelf life to the product.

How is Cleanmaxx® STP superior to the other products available in the market?

Cleanmaxx® STP is a well-curated product consisting of a robust blend of microbes that can effectively degrade diverse pollutants into simple compounds. Each microbe is isolated from its natural habitat and cultured in our facility. Our cutting edge technology ensures that these bacteria remain in a dormant state and have a 95-98% reactivation state within their shelf life of two years.

Can microbes in Cleanmaxx® STP perform under shock loads?

Conventional bacteria are subjected to cell death in the presence of stress conditions like Hydraulic shock load & Organic Shock load. Cleanmaxx® STP which consists of specialized strains of microbes in sewage treatment survive and perform under shock loads.

Can the commissioning/stabilization period of Sewage water treatment plants be reduced with the aid of Cleanmaxx® STP?

The varied nature of the microbes present in Cleanmaxx® STP enables faster degradation of complex pollutants and enhanced biomass generation. This facilitates faster commissioning of sewage water treatment plants and restores the stability of the same.

What are the steps for sewage treatment?

A sewage treatment process generally involves 3 steps. First is the primary step where solids, grit, oil and grease are physically separated out. Second one is the biological step were the beneficial microbes in sewage treatment plant degrade the dissolved pollutants present in it. The third stage is a disinfection stage where the harmful biological load from the treated water is reduced by chlorination, U.V or ozonation after which the water is discharged in fresh water.

How is sewage treatment different from effluent waste water treatment?

The water entering a sewage treatment plant majorly consists of waste water from households, offices and a small amount of industrial waste water. Most effluent treatment systems deal with wastewater coming from an industrial process which is relatively very high in organic loading, along with various chemicals compounds which are tough to treat. Due to the high volumes of water it contains, sewage water treatment becomes a challenge for treatment at a rapid pace. Industrial wastewater on the other hand is concentrated with organic and inorganic pollutants, and therefore difficult to treat on most occasions due to these high concentrations. This is why the general population of microbes in sewage treatment differ from those present in effluent waste water treatment plants.

The sewage water already contains a high microbial load, so why do we require the addition of microbes in sewage treatment?

Yes, the sewage water does contain its own microflora. However, often enough, these microbes do not have the capability to effectively degrade the vast spectrum of pollutants that contribute to the organic load in sewage water. Not just this, they could be pathogenic in nature as well. Microbes in sewage treatment require to be versatile, tenacious and capable of adapting to shockloads as well. Addition of specially selected microbes in sewage treatment like those present in Cleanmaxx STP help in improving the efficiency of sewage water treatment  by accelerated degradation of a variety of organic pollutants present in it.

Does primary sewage treatment require adjustment of pH?

The pH of the sewage water is near neutral most of the time due to the high volumes of water, hence primary sewage water treatment does not require pH adjustment. However, there must be continuous online pH monitoring of incoming untreated sewage water during secondary treatment which ensures that the microbes in sewage treatment does not fail due extreme fluctuations in pH.

Can we obtain pathogen reduction from sewage water treatment by Cleanmaxx STP?

Cleanmaxx STP contains consortium fast growing bacteria that compete with the pathogens for food reducing the food availability for pathogens. They also produce metabolites which are inhibitory to pathogens. The microbes in sewage treatment helps reduce the pathogen load through a scientific principal called “competitive exclusion”when Cleanmaxx STP is used.

What are the most commonly used secondary treatment technologies for sewage treatment?

The basic technologies used for secondary sewage treatment are suspended-growth and attached-growth systems. Suspended growth system in a sewage water treatment consists of an activated sludge process , sequential batch reactor and many more  where free floating microorganisms move along the waste water degrading the pollutants. In attached growth systems used in sewage water treatment like trickling filters, rotating drum contractors, MBR and many more which require the use of media on which microbes attach themselves and form a biofilm that effectively degrades the sewage water passing through it.

Can the detergent and soap water be treated by microbes in sewage treatment?

Yes, soap water and detergent can be treated by microbes in sewage treatment. Soap contains organic compounds like fatty acids and oils which can undergo complete biodegradation by specially selected bacteria. If not subjected to sewage treatment, they can lead to scum formation and disturb the natural microflora and dissolved oxygen levels of the sewage water. Comparatively detergents are recalcitrant in nature but ammonia, phosphorus, and phenol compounds in detergent can be treated by specialized bacteria available in Cleanmaxx STP.

Does the addition of water from swimming pool affect microbes in sewage due to the presence of chlorine?

Chlorine is known for its antimicrobial activity. The concentration of chlorine in swimming pool is maintained at 1 to 2 mg/L. When the water from pool gets mixed to the sewage water and reaches municipal waste water treatment plant the chlorine is diluted manifold, such a low concentration of chlorine is not able to impact microbial action in sewage water treatment.

Why does the sewage water looks blackish in my sewage water treatment plant?

The main reason for sewage water becoming blackish color is due to depleted amount of dissolved oxygen in the sewage treatment tank. The dark brown or black color is due to reaction of sulphides with metals in sewage water under anaerobic conditions. It could be rectified by increasing the dissolved oxygen levels in the biological tank.

Why is there a rotten egg like odour in my sewage water treatment plant?

The foul odour like rotten eggs in sewage water treatment plant is mostly due to the formation of hydrogen sulfide gas in the tank. Hydrogen sulfide gas formation starts as the dissolved oxygen in the tank reduces giving rise to anaerobic condition inside the tank.

How do we manage the excessive sludge after sewage treatment?

Post the function of microbes in sewage treatment completes, the excess of sludge is removed from the secondary clarifier through the pipes and carried to a sludge holding tank for dewatering process. The dewatering process is carried out by centrifugation or filter press. This sludge is later disposed or used as fertilizer after appropriate treatment.

Why is disinfection required for secondary treated water in sewage water treatment plant?

Sewage water treatment is extremely essential because sewage water inherently contains high amount of pathogens and disease causing microorganisms, which when release in the natural water bodies can create health hazards for others. Hence it is advisable to disinfect water at the final stage of sewage water treatment before disposing out into any kind of water body.

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