A Packaged Type Sewage Treatment Plant is a fully integrated sewage treatment system manufactured and assembled in a compact structure before installation at the project site. Unlike conventional large-scale treatment plants, packaged STPs require less space, shorter construction time, and simplified operational management. These systems are designed to treat sewage efficiently using advanced biological and filtration processes before the treated water is discharged or reused safely.
Modern residential and commercial projects often face challenges related to limited space, rapid construction timelines, and increasing wastewater generation. Packaged STP systems provide:
CHARM Ltd. provides advanced Packaged Type Sewage Treatment Plant (STP) solutions using Johkasou Technology—a smart, compact, and decentralized wastewater treatment system designed to treat sewage directly at the source without relying on large centralized infrastructure.
Originally developed and perfected in Japan, Johkasou technology is engineered for efficiency, reliability, and sustainability. The system treats domestic wastewater from toilets, kitchens, bathrooms, and laundry areas through advanced biological and physical treatment processes before safely discharging or reusing the treated water.
Johkasou is a prefabricated sewage treatment system that purifies wastewater within a single compact unit. Unlike conventional sewage systems that require extensive civil infrastructure and large land areas, Johkasou offers a plug-and-play wastewater treatment solution suitable for modern urban and semi-urban developments.
The system is designed to reduce pollution, support water reuse, and protect natural water bodies through efficient multi-stage treatment processes.
Johkasou systems treat wastewater through multiple treatment chambers designed to remove contaminants, decompose organic matter, and disinfect treated water before discharge.
Johkasou systems offer significant advantages over conventional sewage systems, making them ideal for modern developments in Bangladesh.
Johkasou technology is regulated under the Japanese Johkasou Act, which ensures strict technical standards for manufacturing, installation, operation, and maintenance.
Each Johkasou system undergoes rigorous quality and performance testing to ensure reliable wastewater treatment performance, environmental safety, and long-term durability.
Our Johkasou STP systems are built using advanced engineering and high-quality materials designed for long-term efficiency and sustainability.
CHARM Ltd. provides advanced Johkasou wastewater treatment systems designed for efficient, compact, and environmentally responsible sewage management across residential, commercial, and industrial applications.
Built using durable FRP technology and advanced Japanese engineering, our systems ensure reliable performance, low maintenance, and sustainable wastewater treatment for modern developments.
Compact & Efficient Domestic Wastewater Treatment
Johkasou advanced decentralized sewage treatment tank by Daiki Axis — an FRP-based compact wastewater solution designed for efficient domestic sewage treatment and sustainable water management.
This compact system provides safe and effective wastewater treatment with minimal space requirements and simplified operation.
These systems are ideal for:
Heavy-Duty Wastewater Treatment for Large Applications
Johkasou cylindrical FRP-based sewage treatment system designed for higher wastewater loads, faster treatment performance, and long-term operational efficiency.
This heavy-duty system is engineered for large-scale domestic and industrial wastewater treatment applications requiring reliable and continuous performance.
These systems are ideal for:
Efficient Oil & Grease Separation System
Compact Johkasou FRP grease trap system specially designed to separate oils, fats, and grease from wastewater before entering downstream treatment systems.
The system helps protect pipelines, treatment equipment, and sewage systems while ensuring cleaner wastewater discharge.
These systems are ideal for:
CHARM Ltd. provides packaged STP systems designed for long-term operational efficiency and sustainability.
At CHARM Ltd., we believe wastewater should be managed responsibly and transformed into reusable value wherever possible.
Johkasou systems help reduce freshwater consumption by enabling treated water reuse for applications such as flushing, irrigation, gardening, and cooling systems.
This reflects our philosophy of Change and Resource Management—creating sustainable systems that work with nature responsibly and efficiently.
With years of experience in environmental engineering, CHARM Ltd. delivers dependable STP solutions focused on performance, sustainability, and long-term reliability.
Our Strengths
At Charm Ltd., we believe that engineering is not just about building systems—it’s about creating a better future.
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