폐기물 종류별 생태독성 평가를 통한 재활용유해성 검토

The Environmental Assessment of Recycling (EAoR) system protects humans and the environment from the pollution that results from recycling. Under the EAoR system, the Eco-Toxicity test applies to land-based (e.g., filling material) recycling larger than 120,000 tons or 30,000 m2 for recycling plants as defined by current laws (for new recycling methods currently undefined, the eco-toxicity test should always be applied regardless of size and weight). The eco-toxicity limit is less than TU 2.0 on the acute toxicity test by Daphnia magna. This study used the up-flow percolation method to get liquid samples from solid wastes for testing. We also analyzed heavy metals and other factors to evaluate their recyclability. Our results showed that 3 out of 5 waste types exceeded the toxicity limit. The maximum toxicity value was TU 44.4 in the incinerator. Heavy metal analysis proved that the content of Cr6+ in the waste exceeded the standard; hence, it can be highly toxic.