Category: "WASTE & WASTEWATER TREATMENT, POLLUTION CONTROL"

123/75. Remove Copper from Plating Waste - September 23

617/14. Sludge from ETP plant - August 21

44241. Neutralization of Chrome after Plating - May 9

59691. Sodium Metabisulfite and its reaction with water - March 26

  7063. Recovery of copper from electroforming solution - January 7

  7245. How to treat BOD and COD in finishing wastewater - December 21

61620. How to deal with galvanizers waste acids

12215. Change Hexavalent to trivalent chrome? Chrome Reduction process - October 11

  3932. Ion Exchange / DM plant calculations

• pH of DM water is a mystery - August 30

• Mixed bed De-ionization: How to separate cation resin from anion 2ND REQUEST - August 17

• Table of Water Resistivities

• Can RO water be used in manufacturing phosphatizing chemicals?

• 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

• Cost of demineralizing water ("price per ton of water")

• High COD mixed bed polisher regeneration effluent

• 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)

• Caustic & aluminum recovery from cleaning processes - February 21

• Recovery of copper from electroplating & etching solutions

• Recycling of Chrome Stripping solution (HCl) - December 30

• DM System Problem: Poor OBR, short SBA life

• TDS vs PPM vs. µS? - October 14

• Trivalent Chromium vs. Hexavalent -- what are the differences? - August 31

• Recycling of chrome sludge

• Ferrous Chloride vs. ferric chloride for reducing H2S levels

• Defects on test panel left in the water - June 2

• Can Trivalent Chromium degrade into Hexavalent Chromium? - May 3

• Dangers of drinking deionized water

• Methods for pH measurement in D.I. water15