期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 485, 期 -, 页码 143-152出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2014.02.140
关键词
First flush; Wastewater management; Combined sewer system; Urban wastewater system; MAX-MIN Ant System; Ant Colony Optimisation algorithm
资金
- MINECO [CTM 2011-27163, CTM 2012-38314-C02-01]
- European Commission Marie Curie program [2010-RG277050]
The first flush effect in combined sewer systems during storm events often causes overflows and overloads of the sewage treatment, which reduces the efficiency of the sewage treatment and decreases the quality of the receiving waters due to the pollutants that are contributed. The use of retention tanks constitutes a widely used way to mitigate this effect. However, the management of the pollutant loads encounters difficulties when the retention tanks are emptied. A new approach is proposed to solve this problem by fulfilling the treatment requirements in real time, focussing on the characteristics of the wastewater. The method is based on the execution of an Ant Colony Optimisation algorithm to obtain a satisfactory sequence for the discharge of the retention tanks. The discharge sequence considers the volume of stormwater and its concentration of pollutants including Suspended Solids, Biological Oxygen Demand and Chemical Oxygen Demand, Total Nitrogen and Total Phosphorus. The Ant Colony Optimisation algorithm was applied successfully to a case study with overall reduction of pollutant loads stored in retention tanks. The algorithm can be adapted in a simple way to the different scenarios, infrastructures and controllers of sewer systems. (C) 2014 Elsevier B.V. All rights reserved.
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