Demand response measures at a small-scale wastewater treatment plant installed with a photovoltaic system

Nakakubo, Toyohiko; Okuno, Fumika; Maki, Seiya et al.

Journal of Cleaner Production, 2025, 516, 145730

アクセス数:21件（2025-08-15 07:40 集計）

固定URL: https://hdl.handle.net/11094/102208

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タイトル
Demand response measures at a small-scale wastewater treatment plant installed with a photovoltaic system
著者
NRID
1000070648766 1000070648766
ORCID
0000-0002-3048-2237 0000-0002-3048-2237
researchmap permalink
Nakakubo_Toyohiko Nakakubo_Toyohiko
著者名
Nakakubo, Toyohiko
著者名
Okuno, Fumika
NRID
1000040785242 1000040785242
著者名
Maki, Seiya
NRID
1000070436319 1000070436319
著者名
Hirano, Yujiro
キーワード等
Energy management
Load adjustment
Load shifting
Oxidation ditch
Sludge treatment
内容
Nakakubo T., Okuno F., Maki S., et al. Demand response measures at a small-scale wastewater treatment plant installed with a photovoltaic system. Journal of Cleaner Production 516, 145730 (2025); https://doi.org/10.1016/j.jclepro.2025.145730.
抄録
Wastewater treatment plants (WWTPs) consume large amounts of energy, and measures to upgrade WWTPs to become self-sufficient through the use of renewable energy are being promoted. We developed an electricity demand simulation model of a small-scale WWTP with a photovoltaics (PV) system at a 30-min resolution. A demand response (DR) measure for the plant's wastewater treatment process was designed to match a high-load operation with continuous aeration to the PV daily generation curve by utilizing a load-adjustment tank. Similarly, a DR measure for the plant's sludge treatment process was designed to increase the dehydrator operating time and take advantage of seasonal PV generation surpluses by receiving household sludge waste collected from outside of the sewerage area. Self-sufficiency and self-consumption rates were evaluated based on the electricity supply-demand balance at a 30-min resolution under the condition that the total annual PV power generation and total annual demand of the WWTP were approximately equal. Compared to the base scenario that reproduced the electricity demand in the WWTP in FY2018, self-sufficiency and self-consumption rates were both increased by 14.1 % through implementation of the two DR measures under DR-W+S scenario. The improvement of self-sufficiency also led to a reduction of greenhouse gas emissions, and the annual emissions were reduced by 36.3 % under the DR-W+S scenario compared with the base scenario. From the aspect of economic in the 20-year project period, the estimated net present value was turned to be positive in the 14th year under DR-W+S scenario by improving the electricity trade balance.
出版者
Elsevier Ltd
収録物名
Journal of Cleaner Production
巻(号)
516
ページ
145730
刊行年月
2025-06-02
言語
英語
ハンドルURL
https://hdl.handle.net/11094/102208
PISSN
09596526
関連情報 (isIdenticalTo)
DOI (出版社版)
https://doi.org/10.1016/j.jclepro.2025.145730
アクセス権
open access
権利情報
This article is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
出版タイプ
Version of Record
カテゴリ
学術雑誌論文 Journal Article