厭氧-好氧工藝處理造紙廢水工程實例及清潔生產

摘要: 介紹了萬隆造紙廠廢水處理工程改建實例，分析了厭氧 好氧工藝相比原好氧工藝的優勢及其運行狀況與處理成本。工程改造并實行清潔生產后，污染物質排放總量明顯減少，水質可達到GB18918-2002一級A標準，滿足一般回用水的質量要求，同時與原有的好氧生物處理工藝相比可節省動力約55%。工程采取節水措施后，產品耗水量僅為7～9 m3/t，有效控制了水資源消耗。通過運行狀況可知活性污泥法作為厭氧后處理工藝操作控制方便，并可在較低溶解氧（0.9～1.2 mg/L）條件下運行，有效減少了能耗，是實際工程中較為理想的厭氧后處理工藝。

中文摘要:

介紹了萬隆造紙廠廢水處理工程改建實例，分析了厭氧 好氧工藝相比原好氧工藝的優勢及其運行狀況與處理成本。工程改造并實行清潔生產后，污染物質排放總量明顯減少，水質可達到GB18918-2002一級A標準，滿足一般回用水的質量要求，同時與原有的好氧生物處理工藝相比可節省動力約55%。工程采取節水措施后，產品耗水量僅為7～9 m3/t，有效控制了水資源消耗。通過運行狀況可知活性污泥法作為厭氧后處理工藝操作控制方便，并可在較低溶解氧（0.9～1.2 mg/L）條件下運行，有效減少了能耗，是實際工程中較為理想的厭氧后處理工藝。

英文摘要:

The wastewater treatment reconstruction project in Wanlong Paper Mill was introduced. The operational process and treament costs were compared， it could be concluded that anaerobic-aerobic process was more advantaged than the former aerobic treatment process. After the reconstruction of the project and clean production accomplished， the effluent quality could achieve first grade discharge standard of GB 18918-2002 and the recycle requirement of reuse water. Meanwhile， the energy costs of the new process were reduced by 55%， comparing with the former aerobic biological treatment technology. With the water conservation technology， the water comsumption for per unity unit product was just 7～9 m3/t， protecting the water resource effectively. The result indicated that as a developed post-treatment process， the activated sludge system was convenient to be operated， while the dissolved oxygen concentration was low (0.9～1.2 mg/L)， it presents an attractive characteristic of low energy consumption.

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