Vinh city's centralized wastewater treatment plant returns to normal operation

In Document No. 05/BC-HTV dated February 16, 2023,Vinh Urban Infrastructure Management and Development Joint Stock Companyinformation:“The Vinh City Central Wastewater Treatment Plant is managed, operated and maintained by Vinh Urban Infrastructure Management and Development Joint Stock Company with a capacity to receive and treat 25,100 m³/day and night.

The inverter of air blower No. 5 of Vinh City's centralized wastewater treatment plant suffered an explosion and was damaged. Photo: Contributor

During factory operation, at about 3:30 p.m. on February 8, 2023, the inverter of air blower No. 5 exploded, tripped the Attomat, and could not operate.At 7:15 a.m. on February 11, 2023, the inverter of air blower No. 3 exploded and could not operate; the air chamber of air blower No. 2 was damaged. The company reported and invited the Vinh City Factory and Pumping Station Operation Supervision Team and representatives of the Vinh City Construction Investment Management Board to inspect and agree on a plan for timely replacement.

The company has proactively contacted units with sufficient capacity and expertise to supply inverters and blowers to transport the equipment for timely installation. However, this is an imported equipment, so the estimated transportation time to the unit is from 6 to 15 working days. Therefore, at this time, the Wastewater Treatment Plant can only treat wastewater at a maximum of 50% of its design capacity (equivalent to 13,000 m³/day and night).

By 5:00 a.m. on February 16, 2023, the Company had repaired inverter No. 5 and put it into operation. Currently, the C-Tech tanks have returned to normal operation; continue to maintain the operation of pumping wastewater from the incident tank back to the inlet for treatment according to the process.

The C-Tech tanks of Vinh City's Centralized Wastewater Treatment Plant have resumed operation since 5:00 a.m. on February 16, 2023. Photo: Nhat Lan

Currently, the Company continues to repair machinery and auxiliary equipment to ensure the best operation; and regularly reports on the management and operation of the Wastewater Treatment Plant to the Plant and Pumping Station Operation Monitoring Team of Vinh City People's Committee and Vinh City Construction Investment Project Management Board.

Document No. 05/BC-HTV was not only sent to the press agencies but also to the Department of Natural Resources and Environment; the Environmental Police Department of the Provincial Police; the Environmental Protection Sub-Department; the Center for Natural Resources and Environment Monitoring; the Vinh City People's Committee; the Factory and Pumping Station Operation Monitoring Team of the Vinh City People's Committee and the Vinh City Investment and Construction Project Management Board.

Mr. Vo Tuan Anh (far right) and officials of the Urban Infrastructure Management and Development Joint Stock Company inspect equipment that has experienced a fire or explosion. Photo: Contributor

Mr. Vo Tuan Anh - Deputy Director of Vinh Urban Infrastructure Management and Development Joint Stock Company also said that during the inspection and direction of troubleshooting the blower inverter explosion incident at the Centralized Wastewater Treatment Plant, the Company also inspected and reviewed the wastewater treatment operation process.

Through this, it was determined that there were times when the factory did not follow the correct operating procedures. Therefore, the Company organized a review and handled the responsibility of the factory's head.