Control of intermittently aerated nitrogen removal plants by detection endpoints of nitrification and denitrification using respirometry only

Klapwijk, A.; Brouwer, H.; Vrolijk, E; Kujawa, K.

doi:10.1016/s0043-1354(97)00359-x

Cited by 29 publications

(19 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We also observe that the optimally tuned control strategy corresponds with maintaining a minimum concentration of ammonia of about 4 g NH 4 -N.m -3 . The third control strategy (Klapwijk/Surmacz) that was evaluated adds the strategy proposed by Klapwijk et al (1998) on top of the above Surmacz strategy. Its particular aim is to switch on aeration in an anoxic reactor when denitrification is completed.…”

Section: Materials and Methods: Simulated Plantsmentioning

confidence: 99%

Benchmarking WWTP Control Strategies With Robustness and Economic Measures as Performance Criteria

Amerlinck¹,

Gillot²,

Vanrolleghem³

2001

proc water environ fed

View full text Add to dashboard Cite

Carefully conducted model-based simulation studies have become an important part of studies evaluating control strategies for wastewater treatments plants. During the past four years a consortium of researchers and practitioners developed a standard test methodology called the Benchmark, a simulation procedure defined around a simulation model, a plant layout, realistic influent loads and a test protocol that provides an objective measure of performance. It is this measure of performance that is the focus of this paper. First, a total cost index, TCI, is developed that makes a weighted sum of the different performance evaluation criteria (energy consumption, sludge production, effluent quality, …). In addition a robustness index is proposed that aims to evaluate the sensitivity of the performance to the WWTP characteristics. It requires some well-designed additional simulations that evaluate the performance under process conditions that differ slightly from the ones defined in the benchmark protocol.

show abstract

Section: Materials and Methods: Simulated Plantsmentioning

confidence: 99%

Benchmarking WWTP Control Strategies With Robustness and Economic Measures as Performance Criteria

Amerlinck¹,

Gillot²,

Vanrolleghem³

2001

proc water environ fed

View full text Add to dashboard Cite

show abstract

“…On the other hand, the complexity of the system does not allow conclusions to be drawn on the actual conditions of the microorganisms inside the bed. The conclusion thus reached is that due to system complexity ORP could not be regarded a process control parameter, as occurs in other systems (Koch and Oldham, 1985;Caulet et al, 1998;Klapwijk et al, 1998;Zhao et al, 1999;Kim and Hao, 2001;Kishida et al, 2004).…”

Section: Profiles During a Cyclementioning

confidence: 95%

Effect of ammonia load on efficiency of nitrogen removal in an SBBR with liquid-phase circulation

Canto

Ratusznei

Rodrigues

et al. 2008

Braz. J. Chem. Eng.

View full text Add to dashboard Cite

-The removal of biological nitrogen from a synthetic wastewater with different ammonium nitrogen concentrations (50 and 100 mgN-NH 4 + /L) by a nitrification and denitrification process using a sequencing batch biofilm reactor (SBBR) with liquid-phase circulation was studied. The system with a total working volume of 4.6 L (3.7 L in the reactor and 0.9 L in the reservoir) treated 2.1 L of synthetic wastewater in 12-h cycles. As inoculum two types of biomass were used: an anaerobic/anoxic one from an up-flow anaerobic sludge blanket reactor (UASB) and an aerobic one from a prolonged aeration activated sludge system. The system, maintained at 30 ± 1 o C, operated in batch mode followed by fed-batch mode and was aerated intermittently. During fed-batch operation the reactor was fed with an external carbon source as electron donor in the denitrifying step and with no aeration. When the reactor was fed with 50 mgN-NH 4 + /L, efficiencies of removal of ammonium nitrogen and total nitrogen from the effluent were 93.8 and 72.2%, respectively, and nitrite, nitrate and organic nitrogen concentrations were 0.07, 6.4 and 0.5 mg/L, respectively. On the other hand, when the influent ammonium nitrogen concentration was 100 mgN-NH 4 + /L, residual nitrite and nitrate were 0.17 and 20.4, respectively, and no N-Org was found in the effluent. It should be mentioned that residual nitrate remained unaltered at the different C/N ratios used. Consequently, efficiency of total nitrogen removal was reduced to 66.7%, despite efficiency of ammonium nitrogen removal exceeding 90%. These results show the potential of the proposed system in removing ammonium nitrogen from liquid effluents with a moderate ammonium nitrogen concentration.

show abstract

“…Oxygen uptake rate (OUR)-based controls are becoming popular [66]. OUR is the DO consumption per unit time in unit volume of the reactor and can be calculated by a PC or a PLC (programmable logic controller) from sensor-based DO measurements.…”

Section: Process Control Strategiesmentioning

confidence: 99%

Sequencing Batch Reactor for Wastewater Treatment: Recent Advances

2015

View full text Add to dashboard Cite

Sequencing batch reactors (SBRs), due to its operational flexibility and excellent process control possibilities, are being extensively used for the treatment of wastewater which nowadays is fast becoming contaminated with newer and more complex pollutants. It is also possible to include different expanding array of configurations and various operational modifications to meet the effluent limits which are also continuously getting upgraded. This article provides basic description of SBR process along with its functional and physical variants that lead to improved the removal of nutrients and emerging contaminants. The significance of selectors and various recent advancements in the application of SBR has been discussed along with the possibilities held by SBR process in the treatment of wastewater of different origins and composition to produce effluent of reusable quality.

show abstract

Control of intermittently aerated nitrogen removal plants by detection endpoints of nitrification and denitrification using respirometry only

Cited by 29 publications

References 1 publication

Benchmarking WWTP Control Strategies With Robustness and Economic Measures as Performance Criteria

Benchmarking WWTP Control Strategies With Robustness and Economic Measures as Performance Criteria

Effect of ammonia load on efficiency of nitrogen removal in an SBBR with liquid-phase circulation

Sequencing Batch Reactor for Wastewater Treatment: Recent Advances

Contact Info

Product

Resources

About