Capsule Type STP Module (Capacity: 1~15 m3/day) – Advanced On-Site Wastewater Treatment Technology by Daiki Axis Bangladesh
What is the Capsule Type STP ?
- Domestic wastewater comes from everyday activities like cooking, bathing, washing clothes, and handwashing. This type of wastewater contains pollutants such as BOD, Ammonia, TSS, TDS, Total Nitrogen (T-N), Total Phosphorus (T-P), and Coliform bacteria.
- The Johkasou system uses advanced biological processes to safely and effectively treat this wastewater before it is discharged or reused.
BA-2 Module (without water)
BA-2 Module (with water)
How Does the Capsule Type Module Work?
The system follows a multi-stage treatment process, ensuring high-quality effluent
Sedimentation & Separation Chamber:
Sedimentation and separation chamber collects domestic waste water. It also has function to separate solid wastes from liquid waste based on their gravity.
Anaerobic Chamber:
Waste water then flows into anaerobic media contact chamber
from sedimentation and separation chamber. It contains organic material which is
decomposed by anaerobic microorganism
Anaerobic reaction shown as follow:
Organic Material----> CH4 + NH3 + smaller materials + H2O
NO2 + NO3--------->N2 + H2O
Moving Bed Chamber:
Anaerobic process treatment water flows into moving bed chamber. Organic material contained waste water is decomposed by aerobic microorganism, and becomes simpler product. In this case the organic waste material is used for development of new cells (protoplasm) and converted to other materials such as carbon dioxide, water, and ammonia.
Sedimentation Chamber:
Sedimentation chamber has function as place of settled sludge which is resulted by biological processes in moving bed chamber. Settled sludge will be transferred to sedimentation and separation chamber.
Disinfection Chamber:
Disinfectant chamber serves as a place to put chlorine/disinfectant as a sterilization agent pathogenic microorganisms in the waste processed before discharged into the environment.
| Feature | Description |
|---|---|
|
Treatment Capacity |
1–15 m³/day (customizable based on need) |
|
Power Requirement |
Low (varies per model) |
|
Material |
FRP (Fiber Reinforced Plastic) |
|
Installation |
Above-ground, underground, rooftop, car parking area, Gardening Area |
|
Effluent Quality |
PH 6- 8.5 BOD ≤ 20 mg/L, TSS ≤ 30 mg/L, COD ≤ 50 mg/L, T-N ≤ 45 mg/L, Oil & Grease ≤ 10 mg/L |
Why Choose the Capsule Type Module?
Applications of Capsule Type Johkasou Module
Individual houses
Small apartment buildings (e.g., 1–100 people)
Guesthouses or boutique resorts
Small restaurants or cafés
Remote schools or clinics with low footfall
Environmental Benefits
- 🌱 Reduces pollution in water bodies
- 💧 Enables water reuse for gardening, flushing, and cleaning
- ♻️ Supports eco-friendly and sustainable living
- 📜 Compliant with Department of Environment (DoE) Bangladesh discharge standards
Why Capsule Type STP is Perfect for Bangladesh?
With limited centralized sewage systems in many areas of Bangladesh, the Johkasou Module is a reliable alternative. In Bangladesh, building a centralized sewage network often demands huge capital investment and long-term planning — making it difficult to implement in remote areas or expanding urban zones. These mega infrastructure projects are often not viable, especially in regions with frequent flooding, dense populations, or off-grid developments. Instead of relying on a large, centralized network, the Johkasou Module offers a smart, decentralized alternative that works onsite, right where wastewater is generated. This eliminates the need to move waste to another location, making it a cost-effective, scalable, and sustainable solution for both rural and urban settings across Bangladesh.