The Viet Nam Environment Joint Stock Company is preparing for the groundbreaking of the Solid Waste Incineration and Power Generation Plant project at the Khanh Son Solid Waste Treatment Complex, Hoa Khanh Nam Ward, Lien Chieu District, Da Nang. The waste incineration technology for power generation of the plant will use a mechanical grate furnace manufactured by Martin Group (Germany).

Perspective of the Solid Waste Incineration and Power Generation Plant project in Khanh Son. Photo: HOANG HIEP

According to Viet Nam Environment Joint Stock Company, the project has a total investment of VND 2,021 billion from the investor’s own capital and loans with a power generation capacity of 18MW. Work is scheduled to commence on this project in the first quarter of 2025 and is expected to be completed in the fourth quarter of 2026.

The project implementation was approved by the Da Nang People’s Committee for local adjustment of the detailed planning (scale 1/500) in October 2024 with a total planned land area of 9.387 hectares, a capacity to treat domestic waste of 650 tonnes/day (including domestic solid waste, agricultural and forestry waste and common industrial waste).

Accordingly, the main plant is located in the southwest area, the secondary raw water treatment plant and landfill (fly ash) are in the northeast. The leachate treatment area, the integrated pump room, the bottom slag treatment area and other items according to the factory operation diagram are arranged in the centre.

According to the project’s environmental impact assessment report, the project's technology is waste incineration combined with electricity generation using a mechanical grate furnace of the Martin Group.

The Martin SITY 2000 furnace model with advanced waste incineration technology has been researched and improved to be able to incinerate waste with complex components, high humidity, low calorific value and convenient in maintenance and equipment replacement.

Along with that, there are many modern auxiliary equipment, originating from the world's leading suppliers such as Siemens, ABB and Kasby, ensuring environmental standards for emissions, wastewater and waste.

The heat generated from the combustion process is conducted through a heat exchange system and boiler to recover heat energy. The steam generated is used to run a 3-phase AC turbine with a capacity of 18MW...

The first waste-to-energy plant in Da Nang was assessed by the Science and Technology Advisory Council chaired by the Da Nang Department of Science and Technology. The solid waste incineration technology applied at this project to generate electricity using the Martin Group-made mechanical grate is highly suitable for the treatment of domestic waste in Da Nang.

Accordingly, the Martin SITY 2000 mechanical grate technology can burn solid waste that has not been completely classified to generate electricity. The grate consists of movable and static grate pieces stacked on top of each other and moving relatively to mix the waste evenly, creating favourable conditions for firing and burning waste.

The quality of the exhaust gas after treatment is guaranteed according to the regulations of Viet Nam and Europe. Leachate and domestic wastewater are collected and treated to meet Viet Nam's A standard.

The Da Nang Department of Science and Technology noted the technology of treating domestic solid waste by incineration with heat recovery to generate electricity using a mechanical grate incinerator of the Martin Group is a traditional technology that has been effectively applied for many years and is currently basically suitable for incineration of domestic solid waste that has not been completely classified in Da Nang. This technology is currently applying information technology and automatic control features, so it is advanced and modern.

The Da Nang Department of Science and Technology also noted that Viet Nam Environment Joint Stock Company must ensure the origin, technical parameters, and status of invested and installed equipment and machinery. Imported equipment must be synchronised, ensuring connectivity throughout the entire production line while equipment quality must meet current standards and regulations. Production operations must comply with safety regulations, and technical parameters must be well controlled during the treatment of solid waste and secondary waste.

Reporting by HOANG HIEP - Translating by A.THU