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Key Messages • The wastewater sector—particularly wastewater-biogas-energy (WBE) system—presents an opportunity to reduce GHG emissions and tap into renewable energy. In Thailand, several WBE projects have been introduced through the Clean Development Mechanism (CDM) as well as by “unilateral” investments from the private sector in order to treat...

This study is an effort to trace the implication of tidal fluctuation on coastal groundwater quality for different aquifers in case of Saijo plain, western Japan, through major ion, heavy metal and isotopic chemistry as well as to estimate aquifer parameters by tidal response method. Time series analysis for chemical characteristics depicts that...

本研究では，アジアの諸都市におけるフィールド調査に基づき，地域ごとの特色の適切な把握，汎用性を踏まえた系統だった制約条件の類型化，技術的な制約条件の整理と途上国における液状廃棄物処理システム整備の基盤情報の体系化，さらに，現地の制約条件に基づいた効果的な液状廃棄物管理戦略を構築する手順の提案を目指した。主な成果は以下の通りである。 ・ KJ 法を援用した参加型手法により，各都市の多様なステークホルダーの参加の下，液状廃棄物管理における潜在的な制約条件を包括的に 9 分類した。データの制約の厳しい途上国都市において制約条件を数値化する方法を構築し，8 都市を対象に数値化およびポートフォリオ化を行うことで液状廃棄物処理システム整備の基盤となる制約条件を体系化した。さらに...

Arsenic contamination in groundwater is of increasing concern because of its high toxicity and widespread occurrence. This study is an effort to trace the factors responsible for arsenic enrichment in groundwater of the middle Gangetic Plain of India through major ion chemistry, arsenic speciation, sediment grain-size analyses, and multivariate...

The presentation aims at improving the understanding of drought and its management using a case study of India. The presentation starts with historical background of drought and its impacts in India and dwells into drought response strategies adapted over the years, problems with those strategies and tries to identify a way forward. Drought...