Itokawa, Hiroki

Hiroki Itokawa is a director of R&D Planning Division, Japan Sewage Works Agency. He has been working for the company for around 20years as a research engineer, focusing on wastewater treatment technologies including nutrient removal processes, modelling, MBR, anammox and online control. He earned a Ph.D of engineering in 1998 from the Department of Urban Engineering, The University of Tokyo.

Titles from this speaker

AI-Based Guidance System of Operating Parameters for Municipal Wastewater Treatment

Abstract

A real-time guidance system of operating parameters in wastewater treatment process using AI-based algorithm (random forest) was developed and evaluated for its predicting power using full-scale data collected offline from a municipal wastewater treatment plant. In the course of model development, the effects of input data volume and random forest parameters on predictions were investigated and these model creation conditions were fixed individually for air flow rate and waste activated sludge withdrawal rate predictions. Using training data of 2 years with limited number of process variables, the system was able to give predictions of these operating parameters with acceptable error (MAPE) of less than 10% on annual average basis. These results demonstrated that the AI-based guidance system was, once trained with past data, able to trace the operating parameters by skilled operators with practical error range.

SpeakerItokawa, Hiroki

Presentation time

09:30:00

09:50:00

Session time

08:30:00

10:30:00

SessionOptimizing Energy Through Advanced Aeration Control

Session number508

TopicEnergy Production, Conservation, and Management, Facility Operations and Maintenance, Intelligent Water, Municipal Wastewater Treatment Design

Author(s)

H. ItokawaH. ItokawaT. HashimotoS. FujiwaraK. HirabayashiM. MatsuhashiR. Watabiki

Author(s)H. Itokawa1; H. Itokawa1; T. Hashimoto1; S. Fujiwara2; K. Hirabayashi2; M. Matsuhashi3; R. Watabiki4;

Author affiliation(s)Japan Sewage Works Agency1; YASKAWA ELECTRIC CORPORATION2; National Institute For Land and Infrastructure Management3; Maezawa Industries, Inc.4

SourceProceedings of the Water Environment Federation

Document typeConference Paper

PublisherWater Environment Federation

Print publication date Oct 2020

DOI10.2175/193864718825157480

Volume / Issue

Content sourceWEFTEC

Word count11