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"5b. WASTE & WASTEWATER TREATMENT, POLLUTION CONTROL"
• Algae/Fungus/Biological Growth in Plating & Anodizing Rinse Tanks - June 17
• Removing Chrome Contamination from Glycol Cooling Loop - May 27
• Using waste pickle liquor (ferrous chloride & hydrochloric acid) to break an oil-in-water emulsion - May 22
• Filter to take zinc out of drain water so galvanized parts can be washed open Q. - April 11
• Cost of demineralizing water ("price per ton of water") open Q. - April 3
• High COD mixed bed polisher regeneration effluent open Q. - March 31
• Portable DI water columns fade at customer, but are fine when re-tested - March 28
• Cyanide Disposal/Destruction for school lab - March 11
• How to electrowin/recover copper (plating waste) open Q. - March 2
• Caustic & aluminum recovery from cleaning processes - February 21
• Recovery of copper from electroplating & etching solutions open Q. - January 19
• Recycling of Chrome Stripping solution (HCl) - December 30
• DM System Problem: Poor OBR, short SBA life open Q. - November 20
• TDS vs PPM vs. µS? - October 14
• Trivalent Chromium vs. Hexavalent -- what are the differences? - August 31
• Recycling of chrome sludge open Q. - August 14
• Ferrous Chloride vs. ferric chloride for reducing H2S levels open Q. - August 6
• Defects on test panel left in the water - June 2
• Can Trivalent Chromium degrade into Hexavalent Chromium? - May 3
• Dangers of drinking deionized water open Q. - April 19
• Methods for pH measurement in D.I. water - April 15