TABLE 510 continued

Pollutant

Metals and inorganics Copper Nickel

Classical Pollutants (mg/L) Oil and grease Suspended solids pH

Aluminum Calcium Magnesium COD

Dissolved solids

Sulfate

Phenols, total

Toxic Pollutants (pg/L) Toxic organics

Methylene chloride Metals and inorganics Chromium Nickel

Number of Samples/ Number of Detections

Range of Detections

BDL-100 BDL-<17

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

10-630

18-5100 BDL-18

Median of Detections

36 BDL

Mean of Detections

0.005

2600 10

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.

5.3.7 Etch or Cleaning

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?

0 0
DIY Battery Repair

DIY Battery Repair

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.

Get My Free Ebook


Post a comment