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Real-time location algorithms of drinking water pollution sources based on domain knowledge

  • Environmental Concerns and Pollution control in the Context of Developing Countries
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Abstract

The real-time location of pollution sources is the process of inverting pollution sources based on the dynamic optimization model constructed by the time-varying pollution concentration detected by the water quality sensor. Due to the vast quantities of the water supply networks, the water quality sensors will only be placed on critical nodes, resulting in multiple solutions. However, the increased monitoring data enhances the uniqueness of the solution. Combined with the real-time location of pollution sources, this work proposed a multi-strategy dynamic multi-mode optimization algorithm based on domain knowledge, which could guide the population search and avoid trapped into local optimal. The merging mechanism was used to keep the diversity of the population and prevent sub-population clustering on the same optimal solution. The simulation results showed that the algorithm could effectively solve the real-time location problem of pollution sources in different pipe networks and pollution scenarios.

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Data Availability

All data generated or analysed during this study are included in this published article.

Abbreviations

PBA:

Particle backtracking algorithm

PSO:

Particle swarm optimization

MSDMOA:

Multi-Strategy Dynamic Multi-Mode Optimization Algorithm

DMOA:

Dynamic Multi-Group Optimization Algorithm

f :

prediction error

t 0 :

the time when the sensor first detects the pollution in the real scene

t c :

the current time

N s :

the number of sensors

c it obs :

the pollutant concentration of the observation sensor i at time t

c it * :

the pollutant concentration of sensor i when EPANET simulates potential pollution event at time t

L :

the total number of nodes

M :

the injection vector of the pollution source

T 0 :

the initial injection time

D :

the injection duration

k :

Number of subpopulations

pop_size :

Size of subpopulations

g Max :

Population iterations

P c :

Crossover probability

P m :

Mutation probability

Δt :

Time step

t Max :

Positioning time

N :

the optimal solution set size

ε :

threshold

l true :

actual pollution source position

p :

the positioning accuracy rate

f c :

the average value of successful positioning f

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Acknowledgments

We are very thankful for the potential referees for their valuable suggestions to improve the quality of the manuscript.

Funding

This work is supported by the National Natural Science Foundation of China (Granted Nos. U1911205 and 62073300), the Fundamental Research Funds for the Central Universities, CUG (Granted Nos.CUGGC03) and the Fundamental Research Funds for the Central Universities, JLU ( Granted Nos.93K172020K18).

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Authors and Affiliations

Authors

Contributions

Conceptualization: Xuesong Yan, Chengyu Hu

Methodology: Xuesong Yan, Bin Wu

Formal analysis and investigation: Zhengchen Zhou

Writing—original draft preparation: Xuesong Yan, Zhengchen Zhou

Writing—review and editing: Bin Wu

Funding acquisition: Chengyu Hu

Resources: Chengyu Hu

Supervision: Chengyu Hu.

Corresponding author

Correspondence to Chengyu Hu.

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Not Applicable

Consent for publication

On behalf of all authors, I declare that this manuscript is the authors’ original work and has not been published nor has it been submitted simultaneously elsewhere and all presentations of case reports must have consent for publication.

Competing interests

The authors declared that they have no conflicts of interest to this work.

Additional information

Responsible editor: Xianliang Yi

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Cite this article

Yan, X., Zhou, Z., Hu, C. et al. Real-time location algorithms of drinking water pollution sources based on domain knowledge. Environ Sci Pollut Res 28, 46266–46280 (2021). https://doi.org/10.1007/s11356-021-13352-4

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  • DOI: https://doi.org/10.1007/s11356-021-13352-4

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