Full-scale trials to achieve low total phosphorus in effluents from sewage treatment works

Alibardi, Luca; Vale, Peter; Fernández, Y. Bajón

doi:10.1016/j.jwpe.2021.101981

Cited by 8 publications

(6 citation statements)

References 48 publications

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“…where h represents position offset, x ik represents the k-th dimension of the i-th fireworks individual, and ex ik represents the explosion spark of x ik after explosion operation [11]. (4) Generate G Gaussian variation sparks, randomly select spark x i , and randomly select z dimensions to form a set DS so that z � round (D × rand (0, 1)), where D represents the dimension of fireworks member x i .…”

Section: Data Recognition Algorithmmentioning

confidence: 99%

Prediction of Dissolved Oxygen Concentration in Sewage Treatment Process Based on Data Recognition Algorithm

Liu

2022

International Journal of Analytical Chemistry

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In order to realize the real-time and accurate prediction of dissolved oxygen concentration in the sewage treatment process, a prediction model of dissolved oxygen concentration in the sewage treatment process based on a data identification algorithm was proposed. Combined with the data characteristics of the sewage treatment process, a new sample similarity measure is defined to extract more representative modeling data. In the improved algorithm, in order to improve the quality of the initial members of the basic fireworks algorithm, the chaos algorithm is integrated. The search mechanism of the basic fireworks algorithm is improved, and the optimization process is divided into two stages based on the set criteria, and two groups are used simultaneously. The results show that compared with the basic FWA algorithm, the CFWA algorithm makes better use of the chaotic search mechanism. On the one hand, it avoids the excessive random or blind selection of the initial weight threshold of the neural network in the initial stage; on the other hand, in the optimization process of the weight threshold, two types of search mechanisms, FWA and COA, are used to give full play to their respective strengths and to continuously conduct information exchange and mutual cooperation between groups and individuals. The number of times is better than the basic FWA algorithm, and the training error and generalization error of the CFWA model in the simulation results of the soft sensor model are also better than those of the FWA model, which fully verifies the effectiveness of the CFWA algorithm. It is proved that the data recognition algorithm can effectively predict sewage treatment. It is proved that the data recognition algorithm can effectively predict the dissolved oxygen concentration in wastewater treatment process. It provides a new measurement method for some key process variables that cannot be measured or are difficult to measure in complex chemical processes.

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Section: Data Recognition Algorithmmentioning

confidence: 99%

Prediction of Dissolved Oxygen Concentration in Sewage Treatment Process Based on Data Recognition Algorithm

Liu

2022

International Journal of Analytical Chemistry

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“…The coagulant should be selected based on its price, regulatory acceptance and toxicity risk for the receiving bodies (in case of carryover). Alibardi et al, 2021;Holba et al, 2012;Li et al, 2017;Ren et al, 2019;Song et al, 2008;Sun et al, 2019;Wang et al, 2014;Wu et al, 2015;Yang et al, 2011;Zhang et al, 2015 Molar ratio Based on several studies presented Table 8 the optimum molar ratio varies between 1.5 and 4. Higher molar ratios can lead to breach of regulatory iron concentration due to carryover.…”

Section: Influence Of Operational Conditionsmentioning

confidence: 99%

“…The chemical precipitation control system can be implemented with CASP and the MBRs or with any other technology requiring additional P-removal to meet the discharge limits (Shiek et al, 2020). The majority of the published studies in the precipitant dosing control domain are related to CASPs, while few studies have been found related to the MBR (Alibardi et al, 2021;Mbamba et al, 2019).…”

Section: Control Systems For P-removalmentioning

confidence: 99%

“…However, the same authors also found that the phosphorous removal (EQI) and the P-removal (OCI) cost are conflicting and, therefore, suggested further research of the plant-wide dosing control. In a most recent full-scale MBR study (Alibardi et al, 2021), application of feed-forward control based on PO 4 3− load proportional, reduced the iron consumption from 14 mgL −1 to 12 mgL −1 . The schematics of various control systems discussed in this section are given in Appendix E.…”

Section: Control Systems For P-removalmentioning

confidence: 99%

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Modeling, simulation and control of biological and chemical P-removal processes for membrane bioreactors (MBRs) from lab to full-scale applications: State of the art

Nadeem

Alliet-Gaubert

Plana³

et al. 2022

Science of The Total Environment

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“…However, the water sector has adopted many measures in wastewater treatment services, such as the use of advanced technology (e.g. [83,84]), A membrane bioreactor [85], Constructed wetlands [86]. However, judging from the current state of public satisfaction with wastewater treatment [43], the water sector still needs to improve wastewater treatment facilities, technical means, and management decisions.…”

Section: Wastewater Treatment Satisfactionmentioning

confidence: 99%

How do citizens feel about their water services in the water sector? Evidence from the UK

2021

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At present, many studies have used social survey methods to explore UK water citizens’ perceptions of the water sector’s water services, but there are few more targeted and systematic studies. This paper mainly displays the perceptions of UK water citizens on water services in the water sector in recent years and analyses the main reasons for different perceptions and possible strategies. We conduct extensive research from four aspects that are highly related to water services: water citizens’ perceptions of the water supply services and technology application (infrastructure construction) provided by the water sector; the state of communication between the water sector and water citizens and their perceptions of water supply management; water citizens’ perceptions of the comprehensive utilisation of water resources in the water sector; water citizens’ perceptions of the water prices set by the water sector. These discussions aim to discover citizens’ perceptions of the water sector and the effects on the public participation mechanism. These insights help attract the water sector’s attention so that the public’s opinions can genuinely support water policymakers and provide sure support for the water sector to formulate corresponding solutions.

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Full-scale trials to achieve low total phosphorus in effluents from sewage treatment works

Cited by 8 publications

References 48 publications

Prediction of Dissolved Oxygen Concentration in Sewage Treatment Process Based on Data Recognition Algorithm

Prediction of Dissolved Oxygen Concentration in Sewage Treatment Process Based on Data Recognition Algorithm

Modeling, simulation and control of biological and chemical P-removal processes for membrane bioreactors (MBRs) from lab to full-scale applications: State of the art

How do citizens feel about their water services in the water sector? Evidence from the UK

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