Technical Cooperation

Project to Promote and Verify a High Efficiency Wastewater Treatment System for Highly Concentrated Organic Wastewater in Haiphong‚ Vietnam (Part3) new!


Tomoharu ASAHARA‚ Director of the Technical Cooperation Division
Toshikatsu MIYATA‚ Senior Technical Expert
Yuji AOYAGI‚ Senior Technical Expert

Photo at Facility Handover Ceremony

On-site activities recommenced in May 2022 after being interrupted for roughly two years. Mechanical and electrical equipment such as control panels and blowers were installed right next to the treatment tank‚ which had already been mounted‚ and the work was completed in June. We then commenced the trial run‚ and provided OJT training to employees of Haiphong Municipal Department of Agriculture and Rural Development so that they could acquire knowledge and master technical skills. We also created an operating standard manual.

Catalysis & Microorganism System installed in Haiphong
In September‚ we held an inspection tour of the facility and seminar on wastewater treatment technology for relevant parties in industry‚ academia‚ and government to make them aware that the wastewater technology used in the Haiphong City Green Growth Promotion Plan is effective against highly concentrated organic wastewater. Around a hundred people attended the event‚ which was featured on local TV and in a national agricultural newspaper. Five Haiphong municipal employees later participated in training in Japan. The completion briefing and transfer ceremony were held on February 23‚ 2023‚ with a representative from JICA in attendance‚ and the facility was officially handed over to the Haiphong municipal government.

Highly concentrated organic industrial wastewater is difficult to treat with the conventional activated sludge method‚ but the CM (Catalysis & Microorganism) system is a technology fully capable of treating it to conform to the level required by legal regulations. Because the enzyme material used is expensive‚ the initial cost is slightly higher than that of the activated sludge method‚ but the running cost is lower since less sludge is generated so it is better in terms of total cost. However‚ Vietnamese business owners tend to focus on initial costs. Accordingly‚ our main target for future business development is the conversion of existing treatment facilities into CM systems. We intend to contribute to the improvement of the water environment in Vietnam by spreading this approach within the country and facilitating a shift to new projects.