ST. PAUL, Minn.--(BUSINESS WIRE)--Ecolab Inc., the global leader in water, hygiene and energy technologies and services, has acquired controlling interest in Jianghai Environmental Protection Co. Ltd. (Jianghai), an industrial water treatment company headquartered in Changzhou. Jianghai provides water treatment technologies, chemistries and services to several industries in China, including customers in power and chemicals. Jianghai has more than 550 employees and operates two manufacturing pla