Department of Environmental Engineering Sciences , University of Florida , P.O. Box 116450, Gainesville , Florida . 32611-6450 , United States.
Environ Sci Technol. 2019 Jul 16;53(14):7964-7973. doi: 10.1021/acs.est.9b01370. Epub 2019 Jun 27.
Up to 30% of the municipal solid waste (MSW) that is incinerated for energy recovery ends up as MSW incinerator (MSWI) ash. In light of the large volume of MSWI ash and the expenses and regulatory burden if this ash were managed as a hazardous waste, U.S. MSWI facilities place great emphasis on ensuring MSWI ashes pass the toxicity characteristic leaching procedure (TCLP). The focus on passing the TCLP has the unintended consequence of making recycling more difficult and arguably making the ash less benign. This policy analysis examines current U.S. MSWI ash management practices in relation to the TCLP, and discusses the role of the TCLP as a regulatory driver in the management of MSWI ashes. A review of existing information, example data, and common MSWI ash management practices provide insight into potential issues with the current approach and opportunities for alternative directions.
高达 30%的城市固体废物（MSW）在焚烧以回收能源时，最终成为 MSW 焚烧炉（MSWI）灰。鉴于 MSWI 灰的大量产生，如果将其作为危险废物进行管理，将会产生高昂的费用和监管负担，因此美国 MSWI 设施非常重视确保 MSWI 灰通过毒性特征浸出程序（TCLP）。这种对通过 TCLP 的重视，带来了意想不到的后果，使得回收变得更加困难，并可能使灰分变得不那么良性。本政策分析研究了当前美国 MSWI 灰分管理实践与 TCLP 的关系，并讨论了 TCLP 作为管理 MSWI 灰分的监管驱动因素的作用。对现有信息、示例数据和常见的 MSWI 灰分管理实践的审查提供了对当前方法的潜在问题以及替代方向的机会的洞察。
