Metals and inorganics Copper Nickel
Classical Pollutants (mg/L) Oil and grease Suspended solids pH
Aluminum Calcium Magnesium COD
Toxic Pollutants (pg/L) Toxic organics
Methylene chloride Metals and inorganics Chromium Nickel
Number of Samples/ Number of Detections
Range of Detections
Wastestream: Extrusion Solution
41 <2-2 7.3-7.3 <0.5-0.54 38-58 5.3-25 7-20 160-580 7-120 1.8-2.7 0.001-0.01
Median of Detections
Mean of Detections
Source: U.S. EPA, Development Document for Effluent Limitations Guidelines and Standards for the Aluminum Forming Point Source Category, Vols. 1 & 2, U.S. EPA, Washington, DC, 1984; U.S. EPA, Aluminum Forming Point Source Category, 2008. BDL, below detection limit.
heat treatment quenching processes are presented in Tables 5.9 and 5.10 by the aluminum forming operation that it follows.
Thirty plants in the aluminum forming industry use etch or cleaning lines. Rinsing is usually required following successive chemical treatments within these etch or cleaning lines. Wastewater discharge values tend to increase as the number of rinses increase. Table 5.11 summarizes the classical and toxic pollutant data for etch line rinses.
Was this article helpful?
You can now recondition your old batteries at home and bring them back to 100 percent of their working condition. This guide will enable you to revive All NiCd batteries regardless of brand and battery volt. It will give you the required information on how to re-energize and revive your NiCd batteries through the RVD process, charging method and charging guidelines.