ELUTION OF HARMFUL HEAVY METAL IN SLUDGE

• Main Authors: KAJIWARA YASUNOBU, NASU MASAFUMI
• Format: Patent
• Language: English
• Published: 28.10.1997
• Edition: 6
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

PROBLEM TO BE SOLVED: To efficiently elute and separate a harmful heavy metal from sludge of living waste water. SOLUTION: Ferric chloride is added to sludge generated in a sewage disposal plant containing sludge of living waste water in an amt. of 6-10cc per 1L of sludge to lower the pH of waste wa...