山东首个污泥独立焚烧项目在青岛建成

Core Insights - The independent sludge incineration project in Qingdao transforms sludge from a burden into a resource, achieving both economic and environmental benefits through energy self-sufficiency and local processing [1] Group 1: Project Overview - The project is located in the Xiaojianxi Solid Waste Comprehensive Disposal Park and can process 600 tons of sludge daily with an 80% moisture content [1] - Previously, about 30% of the sludge generated by Qingdao's sewage treatment plants required long-distance transportation for disposal, incurring high costs and safety risks [1] - The facility now enables 100% local digestion and harmless disposal of sludge [1] Group 2: Energy Efficiency - The project reduces reliance on external fuels by achieving stable self-sustaining combustion of sludge, with over 80% of the heat generated used to dry incoming wet sludge [1] - This process results in a more than 30% reduction in energy consumption and lowers operational costs [1] Group 3: Resource Utilization - The project benefits from "park synergy," utilizing biogas from a nearby landfill as backup energy and excess heat from biogas power generation as a cost-effective heat source [2] - Wastewater produced by the project is treated and reused within the park, saving 36,000 tons of fresh water annually [2] - Overall operational costs are further reduced by 10%, with the park's resource utilization rate reaching 95% [2] Group 4: Environmental Impact - The project addresses key pollution issues by collecting and incinerating odors and waste gases, effectively eliminating foul smells [3] - The incineration process reduces sludge volume to one-tenth of its original size, producing a stable, non-harmful ash that can be used as a building material [3] - The project creates a closed-loop system that integrates sludge disposal, waste management, wastewater treatment, and energy recovery, serving as a model for sustainable urban waste management [3]