Controlling chemical dosing for sulfide mitigation in sewer networks using a hybrid automata control strategy

Liu, Yiqi, Ganigue, Ramon, Sharma, Keshab and Yuan, Zhiguo (2013) Controlling chemical dosing for sulfide mitigation in sewer networks using a hybrid automata control strategy. Water Science and Technology, 68 12: 2584-2590. doi:10.2166/wst.2013.525


Author Liu, Yiqi
Ganigue, Ramon
Sharma, Keshab
Yuan, Zhiguo
Title Controlling chemical dosing for sulfide mitigation in sewer networks using a hybrid automata control strategy
Journal name Water Science and Technology   Check publisher's open access policy
ISSN 0273-1223
1996-9732
Publication date 2013-01-01
Year available 2013
Sub-type Article (original research)
DOI 10.2166/wst.2013.525
Volume 68
Issue 12
Start page 2584
End page 2590
Total pages 7
Place of publication London, United Kingdom
Publisher I W A Publishing
Language eng
Formatted abstract
Chemicals such as magnesium hydroxide (Mg(OH)2) and iron salts are widely used to control sulfide-induced corrosion in sewer networks composed of interconnected sewer pipe lines and pumping stations. Chemical dosing control is usually non-automatic and based on experience, thus often resulting in sewage reaching the discharge point receiving inadequate or even no chemical dosing. Moreover, intermittent operation of pumping stations makes traditional control theory inadequate. A hybrid automata-based (HA-based) control method is proposed in this paper to coordinate sewage pumping station operations by considering their states, thereby ensuring suitable chemical concentrations in the network discharge. The performance of the proposed control method was validated through a simulation study of a real sewer network using real sewage flow data. The physical, chemical and biological processes were simulated using the well-established SeweX model. The results suggested that the HA-based control strategy significantly improved chemical dosing control performance and sulfide mitigation in sewer networks, compared to the current common practice.
Keyword Chemical dosing control
Hybrid automata
Sewer corrosion
Sewer network
Sulfide control
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
Advanced Water Management Centre Publications
 
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