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New power sources: straw, electricity made from waste

Last update: 08:30 | 21/04/2017

VietNamNet Bridge - The power provided to the entire lighting system of an industrial zone (IZ) is derived from a waste-to-energy plant, while processed and packaged straw residue is sold for VND60,000 per kilo, used as material for the production of microbiological fertilizer. 


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Prime Minister Nguyen Xuan Phuc and Minister of Science & Technology Chu Ngoc Anh on March 18 visited the waste-to-energy (WTE) plant run by Hydraulic Machine Ltd Company (HMC), located in Dong Van 2 IZ in the northern province of Ha Nam.

The plant treats solid waste with the gasification technology to create synthesis gas, used as the material to run electricity generators. The WTE technology has been successfully tested. 

According to Nguyen Gia Long, HMC’s director, in this trial, the plant treated 208 unclassified solid waste to run electricity generator which provided electricity to the entire lighting system in the IZ.

“The characteristic of the WTE technology is that there is no need to classify waste at source and there is no secondary emission. With the closed treatment line and no chimney, this technology does not pollute the air,” he explained.

At Co May, a modern system of making safe mushrooms has been installed to take full advantage of by-products and create new products with high added value.

Also considering waste a valuable resource, HT Giang San in Long An province has successfully invented the technology of treating waste without generating smoke, which both helps protect the environment and generates electricity, gas and biochar.

The company’s general director Huynh Van Hoa said the technology is now used in Binh TIen Hamlet in Long An province. At the Bim Son Thanh Hoa Waste Treatment Plant, one model with the capacity of 50 tons per hour is also running. 

“Clients from Australia, Cambodia, China, the Philippines and the US have contacted us to negotiate about the use of our technology,” he said.

At a workshop on solutions to improve added value for Vietnam’s rice, held in Hanoi recently, Pham Minh Thien, director of Co May private enterprise, said bran can be used to make animal feed or make skin-care cosmetics, while straw can be used as feed for buffalo and make mushroom. 

In addition, broken rice and rice husks can be used to make nano paint, used in many industries thanks to good heat retention. 

At Co May, a modern system of making safe mushrooms has been installed to take full advantage of by-products and create new products with high added value.

According to Thien, every 10 kilos of straw can make one kilo of mushroom. 

He pays VND10,000 for straw and VND20,000 for expenses of different kinds, while he can sell safe mushrooms at VND160,000 per kilo. Meanwhile, straw residue, after microbiological treatment, is sold for VND60,000 per kilo.


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Mai Thanh

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