探討下水污泥資源化與再利用技術

中文摘要污泥處理法規日趨嚴格，污泥棄置成本逐漸提高，污泥之處理處置以減量化、安定化、衛生化、資源化為目標，應朝污泥資源化與再利用為發展方向，探討下水道污泥再利用之商業技本研究彙整國內、外污泥處理與再利用方式，探討污泥處理及再利用方案之優勢與限制，並透過研究掌握下水污泥的特性與資源化的關鍵技術。建議國內污泥處理及再利用之最適化方案，整體而言，污泥處理採厭氧消化及堆肥程序為佳，兼具降低致病性微生物與病媒吸引物削減功能，對環境影響不高，整體效益良好。而再利用方案評估結果，國內污泥以綠農地利用及熱利用(高溫高濃度厭氧消化、造粒乾燥)方案為佳。綠農地利用方案建議國內下水污泥先試行於特定綠地(非農地)或掩埋場，做為肥料、土壤改良材或覆土材料，並限制其操作條件以確保產品使用無虞；熱利用方案則建議參酌國內污水處理廠污泥處理方式選定，如既有污水處理廠已採厭氧消化處理污泥者，增設相關設備以符合高溫高濃度厭氧消化條件，使消化氣體產率提升，以為輔助燃料或發電用途，而具有污泥乾燥設備之污水處理廠，可採造粒乾燥方案節省能源支出，產品可做為固體燃料或顆粒肥料之用。關鍵詞：污泥資源化、污泥減量化、污泥再利用技術。

關鍵字

污泥資源化；污泥減量化；污泥再利用技術

並列摘要

Abstract The sludge processing laws and regulations are day by day strict, the sludge abandons the cost to gradually enhance, processing handling sludge reduces the quantification, the stabilization, the health biochemistry, the resources changes into the goal, should face sludge converting into resources with the again use is the development direction, discusses commercial of technology the sewer sludge again use. This research collects entire domestic, outside sludge processing with uses the way again, discussion sludge processing and uses superiority of and the limit again the plan, and penetrates the research grasping sewer sludge the characteristic and the converting into resources key technologies. Suggested domestic sludge processing and the again use the most suitable plan, is as for the whole, sludge processing picks tires of the oxygen digestion and the compost procedure for good, concurrently reduces the pathogenic microorganism and the infection carrier attraction reduction function, is not high to the environmental effect, the overall benefit is good. But uses the project evaluation result again, the domestic sludge (high temperature high potency tires of oxygen digestion take the green farmland use and the heat utilization, makes grain dryly) the plan as good. The green farmland using the plan suggested the domestic sewer sludge tries out first in the specific green space (non-farmland) or the bury field, does for the fertilizer, the soil improved wood or fills in the material, and limits its operating condition to guarantee the product use no worries; The heat utilization plan suggested deliberates the domestic sewage treatment plant sludge processing mode to designate, if of already has the sewage treatment plant to pick tires of the oxygen digestion processing sludge, the addition correlation equipment conforms to the high temperature high potency to tire of the oxygen digestion condition, causes the digestion gas-oil ratio promotion, thinks the assistance fuel or the electricity generation use, but has of sewage treatment plant the sludge dry equipment, may pick makes a grain of dry plan to save the energy disbursement, the product may do using of for the solid fuel or the granular fertilizer. Key words：Sludge recycling、Sludge reduction、Sludge reuse technology