Waste Management

SCGP manages elimination of pollutants, and industrial waste according to 3R's (Reduce, Reuse, Recycle) and Circular Economy principles. We continuously improve, upgrade the production process and develop research and innovation to maximize pollutants and waste reductions throughout the supply chain. We also recycle the production waste as raw materials and waste-to-alternative fuel, also convert to value-added products. Therefore, we can reduce the use of raw materials from natural resources and minimize the impacts on the environment and society.

Strategy

1
Strive to reduce and eliminate waste generation at the source and set as the indicators for continual assessment.
2
Manage industrial waste, hazardous and non-hazardous wastes at maximum within SCG and SCGP following the 3R and Circular Economy principles and using measures or standards issued by the government or world-class organizations aiming to perform beyond compliance.
3
Research and develop innovation to reuse, recycle raw material and waste or create value to waste by converting them to value-added products.
Zero Waste to Landfill Policy
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Target

Zero
Industrial Waste to Landfill
Every Year
0 ton
Y2021
Waste from the production process in Thailand
Waste per Production ton
to Incinerate without
Energy Recovery
0 kilogram
/
1,000
tons
Y2025
Waste per Production ton
to Incinerate without
Energy Recovery
6.1 kilograms
/
1,000
production tons
Y2021
Non Hazardous
Waste Generation
310
kilograms / production tons
Y2021
Hazardous
Waste Generation
0.8
kilograms / production tons
Y2021

2021 Performance

0 ton
In Thailand to landfill
2.8 kilograms
/
1,000
production tons
Y2021

SCGP Waste Management (FY2018-FY2021)

Unit: Thousand tons

Waste Management FY 2018
(Thailand)​
FY 2019
(Thailand)​
FY 2020
(Thailand)​
FY 2021
(Thailand+ASEAN ex.-Thailand)​
1) TOTAL WASTE USED/RECYCLED 487 507 536 788
2) TOTAL WASTE DISPOSED 526 570 531 740
2.1) waste to landfill 0 0 0.001 18
2.2) waste to incinerate with energy recovery 525 570 531 686
2.3) waste to incinerate without energy recovery 0.72 0.34 0.02 36
Highlight Waste Management Activities

Lime mud management

During 2011-2014, Phoenix Pulp & Paper PCL and Thai Paper Co Ltd invested in the construction of 4 lime kilns, which facilitated the conversion of mud into lime or CaO (Calcium Oxide) which could be later reused in the boilers. By doing so, waste volume is reduced in addition to decreased requirement for mined CaO. These combined efforts resulted in the disposed lime waste of only 45,000 tons in FY2020.

Transform Fly Ash and Bottom Ash to Construction Blocks

Nowadays, Thai Cane Paper Public Company Limited, Prachinburi factory produces steam and electricity using coal as fuel in the paper-making process. After the coal fuel combustion process, the residual leftover is in heavy ash (bottom ash) and light ash ( fly ash). In general, the ash is disposed of by landfills. With the strong determination towards the zero-landfill goal of waste from the production process, the Prachin factory puts efforts into ash management in two ways: using it in construction block production and as industrial waste disposal treated in cement kilns.

In 2020, there was a project to install an Automatic Ash Block machine in the production line. The project consisted of the area – and - buildings improvement for installing the machinery, storing ash blocks, and installing other equipment to assemble the ash block production line as Storage Cement Tanks and Heavy Ash-Storage- Barn.

It is an ongoing project; the research studies' results show that heavy ash (Bottom ash) and Light ash (Fly ash) contain unique properties suitable for construction blocks. The outcome of this project; the factory can increase ash block production capacity by having more ash and reducing disposal costs of firing at the Cement Kiln. In addition, it helps reduce the impact on the air environment - the risk of scattering particles during transport. In addition, the use of ash as raw material in the construction block-production maximizes the waste resource benefit according to the Circular Economy concept and as an upcycled product. In 2021, the proportion of ash disposal to the production of brick increased from the year 2020, at 70:30 to 60:40

BENEFITS FROM THIS PROJECT
In 2021
Bottom ash from the combustion process at the Thai Cane Paper In factory (Prachinburi)
was used to make blocks
100 %
and reduced the disposal cost of
0.8 million baht per year.

Fly Ash as a Substitute for Cement

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

Improving receiving system of fly ash, the substitution of raw material in Cement Production, for Economic and Environmental benefits

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.