3  結 論

 

    （1）采用SBR法處理垃圾滲濾液，剩余COD濃度維持在450mg/L左右，去除率接近80%；剩余氨氮濃度5mg/L，去除率高達96%，反應出水水質透明，效果穩定。

    （2）反應過程中COD、NH3-N與DO、pH值均呈對應變化，其中DO和pH出現了2次跳躍：有機物大部分去除結束時DO第一次躍升，在硝化反應結束時，DO出現第二次跳躍，并緩慢維持恒定；同時，在有機物去除過程中pH呈現大幅上升的現象，當有機物大部分去除結束時pH停止上升，隨著硝化反應的進行pH不斷下降直至反應結束，然后pH突然快速上升或維持不變。DO和pH值的這一變化特點可以間接指示有機物降解的程度。

    （3）不同進水有機物濃度試驗也驗證了DO、pH特征點的重現性，同樣可作為SBR法去除有機物、硝化和反硝化進程的模糊控制參數。這對于實現 SBR 工藝的在線控制、保證出水水質和節約能耗具有重要意義。

 

參考文獻

 

[1] 孟了, 熊向隕等. 我國垃圾滲濾液處理現狀及存在問題[ J ]. 給水排水, 2003, 29 (10): 26～29

[2] Rodrigues　Ana C, Antonio G Brio, etal. Posttreatment of a brewery wastewater using a sequencing batch reactor. [ J ]. Water Environment Research, 2001, 73(1): 45～51

[3] 王小虎, 胡春蓮等. SBR法處理垃圾滲濾液試驗研究[ J ]. 環境衛生工程, 2000, 8(4): 147~150

[4] 曾薇, 彭永臻等. 以DO、ORP、pH作為兩段SBR工藝的實時控制參數 [ J ]. 環境科學學報, 2003, 23(2): 252~256

[5] Stefan M, Michael S, etal. A self adaptive computer-based pH measurement and fuzzy-control system [ J ]. Water Research, 1996(4): 981~991

[6] E Paul, S Plisson-Saune, etal. Process State Evaluation of Alternating Oxic-Anoxic Activated Sludge Using ORP, pH And DO [ J ]. Wat Sci Tech, 1998, 38(3): 299~306  

[7] 國家環保局. 水和廢水監測分析方法(第三版) [ M ].北京:中國環境科學出版社,1989.246～286

TONG Qing ,  MAO Zhi-wei ,  SUN Li-ming  

 

 (Hefei Cement Research & Design Institute ,  Anhui Hefei  230051)

 

Abstract:  In the use of SBR process for the treatment of landfill leachate , the removal rate of COD and ammonia nitrogen approached 80% and 96%, ammonia nitrogen remains was only about 5mg/L , the effluent was clarity and stability. Variation patterns of COD、NH3-N、DO、pH value during the removal of organic matters, nitrification and denitrification were studied. The results showed DO and pH value appeared characteristic changes, which could indicate the degree of organic matters decomposition indirectly. Different organic shock loading experiments successfully proved the characteristic points of DO and pH were reappeared well, which had important significance in the facet of control online of SBR process, assuring the effluent quality and reducing energy consumption.