杜創1，雷振2，張鐵源3
（1.合肥市地下管網建設管理辦公室，合肥，230031；2.賽萊默（中國）有限公司，上海，200051；3.賽萊默水處理（齊利諾普爾）有限公司，美國，16063）
摘要：合肥市某污水處理廠設計排放主要指標需達到地表水環境質量Ⅳ類標準。該項目深度單元處理采用Leopold elimi-NITE®反硝化深床濾池工藝，兼顧了過濾，反硝化脫氮及除磷功能，使污水廠出水穩定達到TN＜5mg/l，TP＜0.3mg/l，SS＜10mg/l。深床濾池設計采用弧形堰、恒液位控制及“前饋+后饋” 精確碳源投加控制方式，力求最經濟的碳源投加量。
關鍵詞：類Ⅳ類水；elimi-NITE®深床濾池；碳源投加控制
The Application of Deep Bed Filter in WWTP Upgrading to Meet Near Surface Water Class IV Standards
Chuang Du1, Lei Zhen2, Zhang Tieyuan3
(1.Hefei City Underground Pipe Network Construction Administration Office, Hefei, 230000; 2. Xylem (China) Co. Ltd, Shanghai, 200051; 3. Xylem Water Solutions Zelienople LLC, Zelienople, PA 16063)
Abstract: He Fei City Economic Development Zone WWTP Phase Ⅲ Project is designed to improve discharge qualities comply with Surface Water Environment Quality Class IV Standard (TN≤5mg/l). The Leopold elimi-NITE® denitrification deep-bed filter, which is a combination of filtration, denitrification and dephosphorization processes, has been applied as advanced treatment to ensure the effluent of SS<10mg/L, TN＜5mg/L and TP＜0.3mg/L. The deep bed filter design has considered curve weir, constant level control for better filter operation. In addition, an advanced Carbo dose control system with forward & backward was incorporated to achieve economical carbon usage.
Key words: Surface Water Class IV Standards, elimi-NITE® Deep-Bed Filter, Carbon Source Dosage Control
污水廠已建成污水處理規模20萬m3/d（每期規模為10×104m3/d），現階段執行一級A排放標準，近期將對一期、二期工程進行提標改造，將污水排放標準提高到主要指標達到地表水環境質量Ⅳ類標準。污水處理廠三期工程設計規模為10×104m3/d，出水設計值在達到《城鎮污水處理廠污染物排放標準》（GB18918-2002）一級A標準的基礎上，要求總磷、總氮、氨氮、化學需氧量4項主要指標濃度值分別不高于0.3、5、1.5、30mg/L，主要指標達到地表水環境質量Ⅳ類標準（總氮≤5mg/L）。
