
Collaboration between
Banka Bio and Aqua Nishihara
Banka BioLoo Limited and Aqua Nishihara Corporation are at the forefront of introducing innovative sanitation solutions in India. Our collaboration centres around the Johkasou Wastewater Treatment Technology, a system with over four decades of successful implementation in Japan. Johkasou represents a decentralized approach to wastewater treatment, making it a perfect Packaged STP solution suitable for diverse urban applications. It stands out for its effectiveness in on-site wastewater treatment and reuse.
Johkasou -
A Packaged Sewage Treatment Plant
A Package Sewage Treatment Plant (PSTP) is a compact, decentralized wastewater treatment system tailored for smaller communities or sectors, such as residential complexes or colonies. Designed for low-cost, low-maintenance operations, PSTPs utilize gravity-based processes that are energy-efficient, simple to operate, and minimize the need for extensive sewage conveyance infrastructure.
Johkasou Technology-based Urban PSTP Treatment Flow:
The treatment process starts with decantation, where liquid and solid wastes are separated through gravitational settling.
Chamber One
Decantation
In this chamber, anaerobic media host microorganisms that break down organic matter in the wastewater.
Chamber Two
Anaerobic Treatment
The moving bed chamber, equipped with MBBR media, facilitates the decomposition of pollutants through aeration.
Chamber Three
Moving Bed Bioreactor
The final step involves sterilization, where pathogenic microorganisms are eliminated, rendering the water safe for recycling and various other uses.
Chamber Four
Sterilisation

Advantages of a PSTP
1.
Efficient Wastewater Treatment
High-performance system ensuring thorough wastewater treatment
2.
User Friendly Maintainance
Designed for easy maintenance, reducing the burden on urban facilities
3.
Energy Effieciencey
Low energy combustion contributes to sustainability and cost savings

4.
Cost Effectiveness
Offers a low cost of ownership, making it an economically viable option.
5.
Modularity and Scalability
The system's modular design allows for easy scalability to meet varying needs.
6.
Durability and Consistency
Engineered for a long operational life while maintaining consistent high performance
-
What is a bio-toilet?A bio-toilet is a toilet that uses a bio-digester instead of a septic tank. The bio-digester contains specially cultured bacteria that break down human waste into water, methane, and carbon dioxide, eliminating the need for manual cleaning or sewage disposal.
-
How does a bio-toilet work?A bio-toilet connects to a bio-digester tank, where anaerobic bacteria decompose human waste into gas and liquid. The gas can be vented or used for energy, while the treated liquid can be safely discharged into the soil or used for irrigation.
-
What is a bio-digester?A bio-digester is a system that replaces septic tanks that utilizes anaerobic bacteria to decompose human waste into water.
-
Do bio-toilets smell bad?No, bio-toilets do not produce foul odors when properly maintained. The digestion process eliminates harmful gases, and the treated output is odor-free.
-
How often do bio-toilets need maintenance?Bio-toilets require NO maintenance. The bacteria in the bio-digester function continuously, reducing the need for manual intervention.
-
Can bio-toilets be installed in rural areas?Yes, bio-toilets are ideal for rural areas, remote locations, and places without sewage infrastructure.
-
What happens if harsh chemicals are used in a bio-toilet?Over-use of harsh chemicals like bleach and acid-based cleaners can kill the beneficial bacteria in the bio-digester, reducing its efficiency. It is recommended to use in moderation.