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| Content Provider | Springer Nature Link |
|---|---|
| Author | Liu, Xiuhong Wang, Hongchen Yang, Qing Li, Jianmin Zhang, Yuankai Peng, Yongzhen |
| Copyright Year | 2017 |
| Abstract | Denitrifying biofilter (DNBF) is widely used for advanced nitrogen removal in the reclaimed wastewater treatment plants (RWWTPs). Manual control of DNBF easily led to unstable process performance and high cost. Consequently, there is a need to automatic control of two decisive operational processes, carbon dosage and backwash, in DNBF. In this study, online control of DNBF was investigated in the pilot-scale DNBF (600 m$^{3}$·d$^{–1}$), and then applied in the full-scale DNBF (10 × 10$^{4}$ m$^{3}$·d$^{–1}$). A novel simple online control strategy for carbon dosage with the effluent nitrate as the sole control parameter was designed and tested in the pilot-scale DNBF. Backwash operation was optimized based on the backwash control strategy using turbidity as control parameter. Using the integrated control strategy, in the pilot-scale DNBF, highly efficient nitrate removal with effluent TN lower than 3 mg·L$^{–1}$ was achieved and DNBF was not clogged any more. The online control strategy for carbon dosage was successfully applied in a RWWTP. Using the online control strategy, the effluent nitrate concentration was controlled relatively stable and carbon dosage was saved for 18%. |
| Starting Page | 1 |
| Ending Page | 8 |
| Page Count | 8 |
| File Format | |
| ISSN | 20952201 |
| Journal | Frontiers of Environmental Science & Engineering in China |
| Volume Number | 11 |
| Issue Number | 1 |
| e-ISSN | 2095221X |
| Language | English |
| Publisher | Higher Education Press |
| Publisher Date | 2017-01-06 |
| Publisher Institution | Chinese Universities |
| Publisher Place | Beijing |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Reclaimed water treatment Denitrifying biofilter Carbon dosage Backwash control Environment |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Science |
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