污水處理廠污泥堆肥技術概述-資料下載頁

【導讀】排放量今后將以每年7％的速率增長[1-2]。1996年我國城市污水處理率為%，但城市污。水集中處理率僅為%[3]。根據(jù)《國家環(huán)境保護“九五”計劃和2020年遠景目標》，到。我國需要處理、處置的污泥量將大幅度增加。1/4的污水處理廠有污泥穩(wěn)定處理設施，污泥處理工藝配套設備較為完善的還不到1/10[6]。至將已經建成的污泥厭氧處理設施閑置不用。即使使用了污泥厭氧消化技術的污水廠也存在。著消化污泥的最終處置問題。由于缺乏適宜的污泥處理技術，這嚴重阻礙著中、小型污水處。污水廠的水處理成效前功盡棄，勞而無功，還會造成嚴重的二次污染，造成新的環(huán)境危害。目前，我國污泥的主要處置方法是土地利用和土地填埋，只有少部分的污泥用于制造建材[7]。通過對15家中、小型城市污水處理廠污泥處理方案的生命周期分析表明，在。土地利用是最佳選擇[4]；污泥厭氧消化和沼氣利用適于大型污水處理廠的污泥處理[5,7]。盡管公眾已意識到固體廢棄物的露天堆放對公眾健康、環(huán)境質量和資源保護有危害作

　　

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