A process-dependent real-time controller for sequencing batch reactor plants: results of full-scale operation

Wiese, Jürgen; Simon, J.; Steinmetz, Heidrun

doi:10.2166/wst.2006.118

Cited by 5 publications

(8 citation statements)

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“…Another advantage of these strategies is the easy introduction to the programmable logic controller and visualization, which was helpful for the operator. In addition to the inflow rate during a period of 0.5 h, the water level data from the sewer system and the rainfall data as described by Wiese et al (2006), in this study the flow rate in l/s, the level of buffer tank 1 and 2 and the degree of velocity of water level increase in buffer tank 1 turned out to be suitable activators for a switch to shorter cycles. After …”

Section: Integrated Simulation Studiesmentioning

confidence: 83%

“…In contrast to the RTC strategy by Wiese et al (2006), (2006), which reports the high optimisation potential of SBR plants. However, during a rain event the hydraulic performance of a DIC/RS-SBR plant is first increased through raising the decantation quantity, since the first flush is purified best and cheapest in longer cycles.…”

Section: Integrated Simulation Studiesmentioning

confidence: 98%

“…Wiese et al (2006) showed that a small German SBR WWTP (5,500 PE) could easily handle higher WWTP influent levels than the designed influent without exceeding the monitoring values. This suggests a high savings potential for future integrated SBR plant design.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand operation under storm water conditions and increasing inflow rates was a second subject which has not been investigated for DIC/RS-SBR plants up to now. In contrast to the RTC strategy by Wiese et al (2006) the plant is operated depending on the inflow rate in fixed 8, 6, 4 and 3-hour cycles with well defined loading, aeration, sedimentation and decantation phases.…”

Section: Introductionmentioning

confidence: 99%

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Optimisation potential for a SBR plant based upon integrated modelling for dry and wet weather conditions

Rönner-Holm¹,

Alves

Steinmetz

et al. 2009

Water Science and Technology

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Integrated dynamic simulation analysis of a full-scale municipal sequential batch reactor (SBR) wastewater treatment plant (WWTP) was performed using the KOSMO pollution load simulation model for the combined sewer system (CSS) and the ASM3 + EAWAG-BioP model for the WWTP. Various optimising strategies for dry and storm weather conditions were developed to raise the purification and hydraulic performance and to reduce operation costs based on simulation studies with the calibrated WWTP model. The implementation of some strategies on the plant led to lower effluent values and an average annual saving of 49,000 euro including sewage tax, which is 22% of the total running costs. Dynamic simulation analysis of CSS for an increased WWTP influent over a period of one year showed high potentials for reducing combined sewer overflow (CSO) volume by 18-27% and CSO loads for COD by 22%, NH(4)-N and P(total) by 33%. In addition, the SBR WWTP could easily handle much higher influents without exceeding the monitoring values. During the integrated simulation of representative storm events, the total emission load for COD dropped to 90%, the sewer system emitted 47% less, whereas the pollution load in the WWTP effluent increased to only 14% with 2% higher running costs.

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Section: Integrated Simulation Studiesmentioning

confidence: 83%

Section: Integrated Simulation Studiesmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Optimisation potential for a SBR plant based upon integrated modelling for dry and wet weather conditions

Rönner-Holm¹,

Alves

Steinmetz

et al. 2009

Water Science and Technology

Self Cite

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“…Of these sensors, COD and ammonia sensors are mainly used to control the aeration period of the SBR process, while phosphate and nitrate sensors are commonly applied during the settling and drawing periods [31]. Some research has established real-time control strategies for a SBR WWTP with sewage systems and a SBR WWTP without sewage systems by applying ammonia, nitrate, and total suspend solid (TSS) sensors [32,33]. It has been shown that real-time control strategies can increase the treatment capability of WWTPs by about 50% while greatly improving the removal efficiency of nitrogen and phosphate.…”

Section: Real-time Control Strategy For the Sbr Process Based On Dirementioning

confidence: 99%

Progress in the Development of Control Strategies for the SBR Process

Yang

Peng

et al. 2010

CLEAN Soil Air Water

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Review Progress in the Development of Control Strategies for the SBR ProcessThe sequencing batch reactor (SBR) process has shown great success in the treatment of industrial wastewater from intermittent discharge factories and for the treatment of domestic wastewater from medium or small towns. As automation technology has developed, many studies have been conducted to determine the optimal conditions for the SBR process. This review outlines the progress and application of control strategies that have been developed for the SBR process and provides a summary and comparison of the advantages and disadvantages of various control strategies, especially fixed-time control strategies and various real-time control strategies. Moreover, an analysis and discussion of novel optimal control methods for biologic nutrient removal are provided. Although previous studies in this field have greatly enriched our understanding of SBR systems, it is clear that many unsolved problems remain. Therefore, a summary of unanswered questions regarding control strategies for the SBR process is provided and future research directions are suggested.

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Study on a Real-Time Control Strategy to Cr(VI) Removal with Fluctuation of Influent in Fe-Electrocoagulation-Al-Electroflotation Reactor

Yang

Luo

et al. 2018

J. Electrochem. Soc.

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The overall goal of this study was to construct a real-time control strategy to Cr(VI) removal with fluctuation of influent using Fe-Electrocoagulation (EC)-Al-Electroflotation (EF) reactor. Firstly, we used the pH as the indirect indicators to developed mechanism models that could describe the process of Cr(VI) reduction to Cr(III). During the process of Fe-EC, if [pHm]/ t≤ [pHp]/ t, indicating that Cr(VI) was completely removed. Model M2 was more capable of predicting the terminal time of Fe-EC process than Model M1. To improve accurate of model M2, the effective rate of Fe(II) for Cr(VI) reduction (ϕ = 28.7%) in an extremely adverse conditions was defined, and the optimal t equation was deduced according to monitoring accuracy and stability of pH monitor. Subsequently, the response surface methodology (RSM) was used to develop flocculation-flotation empirical models of suspended particles of Cr(III). The model of response of the residual total Cr and turbidity, temperature, electric quantity per volume (Q) and settling time was constructed. Verification results show the efficiency of the proposed model. Finally, we constructed a real-time control strategy by combined the Fe-EC and Al-EF, which could save 58.8% of anode material and 58.3% of electricity power and reduce 58.7% of sludge production compared to traditional control process.

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A process-dependent real-time controller for sequencing batch reactor plants: results of full-scale operation

Cited by 5 publications

References 0 publications

Optimisation potential for a SBR plant based upon integrated modelling for dry and wet weather conditions

Optimisation potential for a SBR plant based upon integrated modelling for dry and wet weather conditions

Progress in the Development of Control Strategies for the SBR Process

Study on a Real-Time Control Strategy to Cr(VI) Removal with Fluctuation of Influent in Fe-Electrocoagulation-Al-Electroflotation Reactor

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