Waste Management

Siam Kraft Industry Co., Ltd. has two factories; one located in Ban Pong District, Ratchaburi Province and the other at Wang Sala District, Kanchanaburi Province. Both factories jointly studied fly ash property and found its unique property, the substitute material in cement production. Thus, they further developed Fly ash utilization with SCG Cement-Plant at Thung Song District, Nakhon Si Thammarat Province. In 2020, the Company could manage to transfer fly ash around 10,000 tons to Cement Plant. This project helped reduce the waste disposal management cost approximately 10 million baht, energy saving in Cement plant at 40,000 GJ and decreasing greenhouse gas emission at 3,800 tons CO2

Before Siam Kraft Industry Co., Ltd improved the fly ash receiving system to substitute raw material for Cement Production in the cement factories of SCG Cement Group in Saraburi Province. The traditional fly ash transport depended on a truck. Still, this transportation resulted in higher operating costs due to water spraying to eliminate the dispersion problem while getting fly ash to the truck. The Company developed the new system by transporting fly ash by Bulk Feed Trucks instead of trucks, then storing them in the silo of the cement plant. Though there was no dispersion problem during transportation, the dispersion problem of fly ash dust still occurred while being loaded to use.

In 2020, the Company had jointly studied to solve the dispersion problem at the site with SCI Eco Services Co., Ltd., and The Siam Cement (Kaeng Khoi) Co., Ltd. The Company introduced the technology to use Screw Mixer in spraying water to reduce the dispersion when getting the fly ash from the silo to mix with other raw materials for cement production. At present, The Siam Cement (Kaeng Khoi) Co., Ltd. installed the 2 screw mixers in 2020 at Kiln No.4 and in 2021 at Kiln No. 5.

The Project Outcomes The Company can reduce the fly ash dispersion problem during loading to the Bulk Feed Truck and reduce the disposal cost by approximately 24 million baht per year. And, there is no need to spray water at the starting point, resulting in a cheaper disposal cost.

Moreover, The generated fly ash was reduced by around 30,000 tons every year.

Turn Lime Mud to a Sanitizing Agent for Shrimp and Fish Farms and Soil Conditioner

Both Thai Paper Company Limited and Phoenix Pulp and Paper Public Company Limited generally have lime mud, a natural by-product produced in the pulping process, which has annual disposal cost of 40 million baht approximately. They jointly collaborated with Siam Forestry Company Limited, which has had the license to manage the waste disposal for fertilizer to research lime mud application in the agricultural sector as a soil conditioner to improve soil quality and increase plants' alkalinity nutrients. They have expanded soil conditioner to the market through a distributor, namely, "Ku Din Fertilizer." With further development of lime mud for adjusting the pH in soil and water for shrimp and fish farms, the Company could sell the innovative products to farmers in the Southern and Eastern parts of Thailand in collaboration with the Phetchaburi Coastal Aquaculture Research and Development Center. In 2020, Siam Forestry Co., Ltd., could reduce the amount of disposal waste at 3,500 tons per year, earned income from lime mud disposal management 3 million Baht, and selling products around 2 million Baht. The Company plans to expand the products in a larger market to complete all lime mud in the SCG factories.

Reduce hazardous chemicals in printing inks

Thai Containers Group Company Limited, in collaboration with Innovation and Product Development Center, has researched the extraction of copper from printing inks on cardboard boxes and has opted to use inks with lower copper content. This initiative reduces waste generated from the production process that contains copper. This effort is currently being expanded to all plants in Thai Containers Group Company Limited.