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The Metal Plating and Finishing Industry: Electroplating: Waste Treatment and Control

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Abstract
The processes of electroplating, anodizing and galvanizing produce several different wastestreams, including contaminated wastewaters, metallic sludges, and air emissions. In most plating shops, the bulk of the waste comes in the form of wastewater produced from processing and rinsing operations. In order to meet permitted sewer discharge levels, wastewater containing chemicals, such as cyanide and chromate, must go through an oxidation process before being precipitated. The precipitation process causes the heavy metals to be separated from the liquid, which is then able to meet water quality standards and can be discharged into the sewer system. The heavy metal precipitates form a sludge-like consistency, which then generates a solid filter cake once most of the water is removed. The predominant form of disposal for these filter cakes is in a certified, hazardous waste landfill. However, some plating facilities have found ways to recycle their solid waste. In addition, many plating facilities have gone to a counter-current rinse system to minimize the amount of water that's used.
Collection
Environmental Studies Collection
Subject
environmental technology, pollution, pollution prevention, waste, waste stream, waste stream management, waste treatment, metal plating, finishing, electroplating, anodizing, galvanizing: metallic sludges, air emissions, heavy metals, counter-current rinsing, evaporative recovery, spray rinses, constant baths, contaminated wastewaters, The Metal Plating and Finishing Industry
Series
Environmental Science, Introduction to Ecology, Preserving the Legacy 1: Industrial Processes and Waste Stream Management
Contributors
Coombes, Robert (Performer), Kahler, Kipton (Performer), Moone, Michael (Performer), Wiggins, Bill (Performer), INTELECOM Intelligent Telecommunications (Firm)
Duration
00:06:24 (HH:MM:SS)
Language:
English
Copyright Holder
Name INTELECOM Intelligent Telecommunications
RoleDistributor
Telephone800-576-2988 x122
Address150 E. Colorado Blvd. Ste. 300, Pasadena, CA 91105
Email[email protected]
Rights Declaration:
This video is protected by copyright. You are free to view it but not download or remix it. Please contact the depositing institution for further information about how you may use this video.
Persistent/Share URL
https://54098.surd9.group/show.php?pid=njcore:18368
Basic LTI parameter
pid=njcore:18368
PID
njcore:18368
Metadata
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