ON-SITE WASTEWATER TREATMENT SYSTEM – JOKASO: Pure Biological Solution for FDI Enterprises and Green Infrastructure

In the context of Vietnam emerging as a key destination for international investment flows, requirements for environmental infrastructure—particularly wastewater treatment—are becoming increasingly stringent. Beyond regulatory compliance, FDI enterprises are now aligning with ESG standards and sustainable development goals. This creates opportunities for advanced, flexible, and eco-friendly technologies such as JOKASO to demonstrate their value.

JOKASO, as defined in Japan, is a prefabricated “mini domestic wastewater treatment plant” that can be installed directly at the source. Unlike conventional centralized treatment systems, this solution enables on-site wastewater treatment across residential houses, buildings, urban areas, hospitals, hotels, and, in particular, factories and industrial zones with FDI investment. This decentralized approach helps reduce infrastructure load, minimize operational risks, and optimize long-term investment costs.

At the heart of the solution is NAO technology, a pure biological process based on the cycle of decomposition, re-synthesis, and decomposition.

The system operates through two main treatment zones. The heterotrophic zone enables the rapid degradation of organic pollutants (BOD, COD), while the autotrophic zone is responsible for nitrogen removal and the stabilization of water quality. The entire process requires no chemicals, generates no odor, and produces minimal to no excess sludge. As a result, both operational costs and environmental impacts are significantly reduced.

The treated effluent meets the highest standards under current Vietnamese regulations (QCVN 14:2025/BTNMT – Column A), making it suitable for discharge or reuse. With an operating cost of approximately 2,000 VND per cubic meter (around 0.08 USD/m³), JOKASO delivers clear economic advantages, particularly for enterprises with high water consumption.

JOKASO VIETNAM – Technology and Implementation Capability

JOKASO VIETNAM Joint Stock Company is a science and technology enterprise that owns and develops NAO technology in Vietnam, while also building capabilities in equipment manufacturing, system construction, and full-package operation.

The integration of SCADA, IoT, and artificial intelligence (AI) enables real-time monitoring and operational optimization, aligning with digital transformation trends in environmental infrastructure.

With a vision of developing septic-free urban areas and industrial zones, JOKASO VIETNAM is contributing to the formation of a smart, green infrastructure model in Vietnam. The solution not only addresses wastewater treatment challenges but also introduces a new approach: converting wastewater into a resource, promoting circular economy principles, and enhancing competitiveness for FDI enterprises.

In the long term, JOKASO is considered one of the foundational solutions for sustainable infrastructure ecosystems, supporting FDI enterprises in their journey toward green development and global integration.

Source: Vietnam Business Forum