Treatment of Sewage Using a Constructed Soil Rapid Infiltration System Combined with Pre-Denitrification
Bibliographic Data
| ID | 15470822 |
|---|---|
| Authors | Wenlai Xu (0000-0002-1287-6478, Chengdu University of Technology), Jinyao Chen (0000-0003-0519-4935, Chengdu University of Technology), Yue Jian (Chongqing Academy of Animal Science), Zhicheng Pan (0000-0001-5625-9095, Haitian Water Group Stock Company, Chengdu 610059, China), Zishen Mou (Chengdu University of Technology, corresponding author) |
| Year | 2018 |
| Volume | 15 |
| Issue | 9 |
| Pages | 2005-2005 |
| Publication date | 2018-09-14 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | International Journal of Environmental Research and Public Health (JOURNAL) |
| Journal identifiers | ISSN: 1661-7827 • E-ISSN: 1660-4601 |
| Publisher | Multidisciplinary Digital Publishing Institute (PUBLISHER • CH) |
| DOI | 10.3390/ijerph15092005 |
| PMID | 30223452 |
| OpenAlex | W2891690811 |
| Language | EN |
| References cited | 10 |
The activated sludge process of the anaerobic/oxic (A/O) process has a good denitrification performance because it can make full use of the carbon source in the original sewage, and the denitrification can provide alkalinity for aerobic nitrification. The traditional constructed soil rapid infiltration (CSRI) system, on the other hand, has a poor nitrogen removal effect. Dividing the traditional CSRI system into two sections, one performs denitrification as an anoxic section, while the other performs nitrification as an aerobic section and is placed after the anoxic section. The nitrification liquid of the effluent from the aerobic section is mixed with the original wastewater and enters the anoxic section for denitrification. We expected that this would be improved by combining CSRI with a pre-denitrification step that would make full use of the carbon source in the original sewage. In a small-scale experimental model, the removal efficiencies of nitrogen, in the form of ammonium, nitrate, and total nitrogen (TN), as well as chemical oxygen demand (COD), were determined. The hydraulic load was varied, while the backflow reflux capacity was kept constant, to determine the effect on the pre-denitrification process. An average removal rate of 95.4% for NH4+-N and 96% for COD could be obtained when a hydraulic load of 80 cm3(cm2·d) -1 and a reflux ratio of 75% were applied. Under these conditions, the average removal rate of TN was 77.4%, which is much higher than what can be typically achieved with conventional CSRI systems
Anoxic waters · Denitrification · Effluent · Nitrification · Nitrogen · Sewage · Sewage treatment · Wastewater · Chemistry · Constructed Wetlands for Wastewater Treatment · Environmental Science · Urban Stormwater Management Solutions · Wastewater Treatment and Nitrogen Removal · Environmental Chemistry · Environmental Engineering
Effect of Potassium Chlorate on the Treatment of Domestic Sewage by Achieving Shortcut Nitrification in a Constructed Rapid Infiltration System
Effect of C/N Ratio on the Removal of Nitrogen and Microbial Characteristics in the Water Saturated Denitrifying Section of a Two-Stage Constructed Rapid Infiltration System
| Citation velocity | historical |
|---|---|
| Highly cited | No |