How Can Sewage Sludge Use in Sustainable Tunisian Agriculture Be Increased?

In recent years, farmers in Beja, an agricultural governorate northwestern Tunisia, have expressed their willingness to use urban sewage sludge as fertilizer, especially with the unavailability of chemical fertilizers and soil type region that is poor organic matter. However, there imbalance between important farmers’ demand versus limited quantity produced by Beja wastewater treatment plants (WWTPs). face this, this study aims identify problems related reuse propose solutions solve them. The quality five WWTPs was assessed based on physicochemical microbiological parameters. data were collected using Delphi method, 15 experts representing different positions issue treated. SWOT-AHP methodology used define strategies promoting sustainable management for development Beja. Results showed no compliance Tunisian standards NT 106.20 produced. A set twelve practical conclusions identified, constituting Strengths–Opportunities, Strengths–Threats, Weaknesses–Opportunities, Weaknesses–Threats deduced from SWOT-AHP.