| 英文摘要 |
Waste Wood Collection and Carbon Reduction Results
1. Waste Wood Collection Results
In 2024, the Chiayi County EPB significantly improved waste wood collection efficiency, collecting a total of 457.44 tons, an increase of 13.7 times compared to 2023’s 28.64 tons.
209 tons were purchased by Ying-Song Environmental Company at a price of NT$1,000 per ton.
This batch of waste wood was reused for power generation, producing 297,142 kWh of green electricity, aligning with Taiwan’s renewable energy policy goals.
Ying-Song Environmental Company generated revenue of approximately NT$1.5 million, while the Chiayi EPB earned NT$209,000 from the sale of the wood, achieving dual economic benefits.
2. Carbon Emission Comparison
Existing Scenario: Open Burning
Traditional open burning of waste wood emits significant greenhouse gases. Based on IPCC standards, the emissions from 209 tons of waste wood are:
CO₂ emissions: 439.5 tons
CH₄ emissions: 2.94 tons CO₂e
N₂O emissions: 4.67 tons CO₂e
Total emissions: 447.11 tons CO₂e
Alternative Scenario: Renewable Power Generation
Using 209 tons of waste wood for renewable power generation produces 297,142 kWh of electricity. Based on Taiwan’s 2023 power grid emission factor of 0.509 kg CO₂/kWh, this reduces emissions by:
Reduction = 297,142 × 0.509 × 0.001 = 151.27 tons CO₂
Carbon Reduction Effectiveness
Comparing open burning with renewable power generation, the actual carbon reduction benefit is:
447.11 − 151.27 = 295.84 tons CO₂e
By converting waste wood into renewable power, Chiayi County successfully reduced approximately 295.84 tons CO₂e, effectively promoting environmental sustainability.
3. Reduction of Incineration Volume
In the past, waste wood was often treated as household garbage and sent to the Lucao Incineration Plant, increasing its operational burden. This project effectively reduced 417.97 tons of waste incineration. Based on the inter-county waste disposal cost of NT$4,000 per ton, this saved:
417.97 tons × NT$4,000/ton = NT$1,671,880
4. Overall Benefits
Economic Benefits: NT$1.5 million revenue for Ying-Song Environmental Company and NT$209,000 for the EPB.
Environmental Benefits: Reduction of 295.84 tons CO₂e emissions.
Cost Savings: NT$1.67 million saved in incineration treatment costs.
Agricultural Film Recycling and Reuse Results
1. Waste Agricultural Film Collection and Reprocessing
The recycling performance of waste agricultural films in Chiayi County improved significantly in 2024, with a total collection volume of 63.886 tons, representing a 4.3-fold increase compared to 2023. The collected agricultural films were processed by certified recycling companies into high-value plastic pellets, which were used to produce recycled plastic bottles, flowerpots, and other products.
2. Launch of the Regional Agricultural Plastic Washing Facility
On June 14, 2024, the Chiayi County Dongshi Cooperative Farm officially launched Taiwan’s first regional agricultural plastic washing and recycling facility, equipped with:
Crushing, washing, and drying systems, capable of cleaning 2,000 tons of agricultural plastic annually.
Water resource recycling: The washing water is filtered and reused, while sediment is used for compost or soil amendment, achieving a complete resource recycling system.
3. Reverse Recycling Model
The EPB guided Guangjian Industrial in implementing a "reverse recycling" model, facilitating cooperation between suppliers and farmers. In 2024, 84 tons of waste agricultural film were successfully collected and processed, establishing a stable commercial recycling model that promotes the high-value utilization of agricultural plastics.
Oyster Shell Results and Benefits
The Chiayi EPB formulated the “Chiayi County Waste Oyster Shell Storage Site Management Guidelines”, which regulate storage site operations and pollution prevention measures. By assisting businesses in establishing legal storage sites, the EPB resolved long-standing problems of mosquito infestations, odors, and environmental deterioration.
1. Progress of Storage Site Applications
The EPB actively guided four businesses:
Shiji: Successfully completed documentation and submitted the project plan.
Weihong and Longxing: Applications are in progress.
Yuyi: Opted out of application processing.
Currently, over 80,000 tons of waste oyster shells are being stored and managed in compliance with regulations.
2. Resource Reuse and Innovation
The EPB actively mediated with enterprises to promote innovative oyster shell reuse, enhancing their economic value through:
Agricultural Use: Processing shells into lime powder for soil amendment.
Industrial Applications: Manufacturing construction materials and cushioning materials.
Daily Products: Developing shell-based products such as slippers, antimicrobial powders, and functional textiles.
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