- 著者
-
Lei Zhongfang
Wu Ting
Zhang Yi
Liu Xiang
Wan Chunli
Lee Duu-Jong
Tay Joo-Hwa
- 出版者
- Elsevier Ltd.
- 雑誌
- Bioresource technology (ISSN:09608524)
- 巻号頁・発行日
- vol.128, pp.774-778, 2013-01
- 被引用文献数
-
15
1
Soil infiltration treatment (SIT) is ineffective to treat ammonium wastewaters of total nitrogen (TN) > 100 mg l−1. This study applied a novel two-stage SIT process for effective TN removal from wastewaters of TN > 100 mg l−1 and of chemical oxygen demand (COD)/TN ratio of 3.2–8.6. The wastewater was first fed into the soil column (stage 1) at hydraulic loading rate (HLR) of 0.06 m3 m−2 d−1 for COD removal and total phosphorus (TP) immobilization. Then the effluent from stage 1 was fed individually into four soil columns (stage 2) at 0.02 m3 m−2 d−1 of HLR with different proportions of raw wastewater as additional carbon source. Over the one-year field test, balanced nitrification and denitrification in the two-stage SIT revealed excellent TN removal (>90%) from the tested wastewaters.