Supervisory control configurations design for nitrogen and phosphorus removal in wastewater treatment plants

2021 ◽  
Author(s):  
Abdul Gaffar Sheik ◽  
Murali Mohan Seepana ◽  
Seshagiri Rao Ambati
Keyword(s):  
Wastewater Treatment ◽  
Supervisory Control ◽  
Phosphorus Removal ◽  
Wastewater Treatment Plants ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal

On-Line and Off-Line Expert Systems for the Operation of Wastewater Treatment Plants

1993 ◽  
Vol 28 (11-12) ◽  
pp. 315-323 ◽  
Author(s):  
Gösta Ladiges ◽  
Rolf Kayser
Keyword(s):  
Wastewater Treatment ◽  
Expert Systems ◽  
Phosphorus Removal ◽  
Wastewater Treatment Plants ◽  
Control Parameters ◽  
Laboratory Measurements ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
Line System ◽  
On Line

To provide the operators of wastewater treatment plants with the required knowledge to operate their plant both an on-line and an off-line expert system were developed. The on-line system recognises plant failures from on-line signals and laboratory measurements, immediately starts the diagnosis and gives proper advice displayed on the screen without controlling the plant directly. The off-line system is used for the diagnosis of plant upsets as well as for plant operation and the choice of control parameters. Both expert systems are PC-based and are applied to nutrient removing municipal treatment plants. They contain rules and models for nitrogen- and phosphorus removal, sludge losses, sludge bulking and the on-line control of different plant functions.

Influence of Hydraulic Loading Rate on Horizontal Zeolite Wetland Effluent Quality

2012 ◽  
Vol 573-574 ◽  
pp. 659-662
Author(s):  
Hao Wang
Keyword(s):  
Wastewater Treatment ◽  
Loading Rate ◽  
Wastewater Treatment Plants ◽  
Treatment Plant ◽  
Secondary Effluent ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
Hydraulic Loading Rate ◽  
Effluent Quality ◽  
Hydraulic Loading

In Tangshan area, the secondary effluent of wastewater treatment plants was used for this study. Horizontal zeolite wetland was carried out treating it. Hydraulic loading rate was the parameters for analyzing the nitrogen and phosphorus removal efficiency of pollutants from the secondary effluent of wastewater treatment plant. Zeolite constructed wetlands showed different behaviors for nitrogen and phosphorus removals.Under the optimum hydraulic loading rate, the primary pollutions were removed to a large extent.

Application of reversed A2/O process on removing nitrogen and phosphorus from municipal wastewater in China

2011 ◽  
Vol 63 (10) ◽  
pp. 2138-2142 ◽  
Author(s):  
X. S. Kang ◽  
C. Q. Liu ◽  
B. Zhang ◽  
X. J. Bi ◽  
F. Zhang ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Phosphorus Removal ◽  
Municipal Wastewater ◽  
Treatment Plant ◽  
Practical Application ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
New Process ◽  
Technical Features

The application of reversed A2/O process in practice in China is mainly discussed in this paper. As a new process on nitrogen and phosphorus removal, principle and technical features of reversed A2/O process are also summarized. The application in rebuilt wastewater treatment plant shows that reversed A2/O process not only has merits on high nitrogen and phosphorus removal efficiency, but also has merits on energy saving. The application in newly-build wastewater treatment plant shows that infrastructure and equipment investment of reversed A2/O process economized 15% and 10% respectively, compared to conventional A2/O process. The practical application shows that reversed A2/O process is a new nitrogen and phosphorus removal process, which is suitable for China's national conditions.

Cost comparison of wastewater treatment in Danubian countries

2010 ◽  
Vol 62 (2) ◽  
pp. 223-230 ◽  
Author(s):  
Matthias Zessner ◽  
Christoph Lampert ◽  
H. Kroiss ◽  
S. Lindtner
Keyword(s):  
Wastewater Treatment ◽  
Low Income ◽  
Phosphorus Removal ◽  
Cost Comparison ◽  
Low Income Countries ◽  
Wastewater Management ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
Danube Catchment ◽  
Catchment Areas

This paper investigates the costs of wastewater treatment (including sludge management) within the Danube catchment countries A, CZ, SK, HU, SL, RO, BG and UA. TK is considered as well. Additionally, the paper compares the total costs of wastewater management (including sewerage) with the incomes in the different countries. The annual costs of wastewater treatment in Austria are about 30 €/p.e. y for large plants with nitrogen and phosphorus removal. In low income countries of the Danube and Black Sea catchment areas they are at a maximum 30% lower than in Austria. However, the incomes in countries like Bulgaria, Romania or Ukraine are 85% to 90% lower. The total annual costs for wastewater management (sewer development plus treatment) amount at least to 90€/p.e. y. Considering the level of income in those countries, financing of wastewater management completely by charges of the population equivalents connected is not feasible. Therefore other approaches for financing wastewater treatment are required.

scholarly journals Calibration and simulation of two large wastewater treatment plants operated for nutrient removal

2004 ◽  
Vol 50 (6) ◽  
pp. 87-94 ◽  
Author(s):  
J. Ferrer ◽  
J.J. Morenilla ◽  
A. Bouzas ◽  
F. Garcia-Usach
Keyword(s):  
Phosphorus Removal ◽  
Biological Process ◽  
Wastewater Treatment Plants ◽  
Control Strategies ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
Good Correspondence ◽  
Advanced Control ◽  
Performance Results ◽  
Biological Nitrogen

Control and optimisation of plant processes has become a priority for WWTP managers. The calibration and verification of a mathematical model provides an important tool for the investigation of advanced control strategies that may assist in the design or optimization of WWTPs. This paper describes the calibration of the ASM2d model for two full scale biological nitrogen and phosphorus removal plants in order to characterize the biological process and to upgrade the plants' performance. Results from simulation showed a good correspondence with experimental data demonstrating that the model and the calibrated parameters were able to predict the behaviour of both WWTPs. Once the calibration and simulation process was finished, a study for each WWTP was done with the aim of improving its performance. Modifications focused on reactor configuration and operation strategies were proposed.

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