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An Analysis of Waste Management Policies on Utilizing Biosludge as Material Resources in Taiwan

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Author(s): Wen-Tien Tsai

Journal: Sustainability
ISSN 2071-1050

Volume: 4;
Issue: 8;
Start page: 1879;
Date: 2012;
Original page

Keywords: biological wastewater treatment | sludge | organic fertilizer | regulatory promotion | benefit analysis

ABSTRACT
Biosludge is a by-product of secondary wastewater treatment processes. Due to its high contents of organic carbon and plant nutrients, this bioresource can be practically reused as raw feedstock for making organic fertilizers and building materials. The objective of this paper was to provide a preliminary analysis of biosludge utilization in Taiwan, including food processing sludge, wine brewery sludge, textile sludge, pulp sludge and agricultural sludge. The discussion focused on the status of biosludge generation in recent years (2004–2010), and its sustainable management principle. This paper also presents updated information about the governmental regulations and policies for promoting these biosolids as material resources, as well as validating the regulatory levels of toxic constituents in the biosludge and its derived product (e.g., organic fertilizer). Based on the preliminary benefit analysis of utilizing biosludge as raw material for organic fertilizer, reusing biosludge, being a beneficial resource, should be superior to those by traditional treatments (i.e., incineration and sanitary landfill).
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