Ask the Expert Question-and-Answer Archive
Wastewater Treatment

 

---

Browse the Archive by Date

November, 2012

• Solubility of Metals with Changing pH

September, 2012

• One Step Clean and Phosphate System

June, 2012

• Multi-Stage Grease Trap

April, 2012

• pH and Temperature Effect on COD
• COD Value

March, 2012

• Calculating Chrome Discharge Limits

January, 2012

• Industrial Wastewater Filtration Systems

January, 2011

• Titanium Pickling Wastewater

December, 2010

• Chromium in Wastewater

June, 2010

• BOD & COD Reduction Methods

May, 2010

• Iron Contamination on Nickel Chloride Solution

April, 2010

• Hex Residual
• Recovery and Cleaning of Acidic Rinsing Water
• N & P Treatment Costs

May, 2009

• COD Increase After Wastewater Treatment
• Peracetic Acid

February, 2009

• Carryover on a Lamella Claifier using Ferrous, Nalcolyte & Sedi Floc

May, 2008

• Nitric Aidic Pickle Liquor Waste Treatment
• 433.10 Metal Finishing Subcategory

March, 2008

• Total Organic Carbon Reduction

October, 2007

• Lead Extraction from Carbon Steel
• Listed as Metal Finishing Part 413, 433

July, 2007

• HNO₃ Waste Treatment

March, 2007

• Cement-Based Treatment of Plating Sludges

January, 2007

• Electrowinning dilute copper sulfate
• Treatment of Hydrofluoric Acid Waste
• Alternatives to Chrome Passivates

November, 2006

• Blowers
• 40 CFR Part 413, 433 and 465
• Clarifier

December, 2006

• Chrome Passivate Alternatives

November, 2006

• Blowers
• 40 CFR Part 413, 433 and 465
• Clarifier

October, 2006

• Wastewater Ventilation
• Metal in Wastewater
• Mercury in Burnishing Wastes
• Oily Waste to Anerobic Digester

September, 2006

• Water Minimization in the Plating Industry

May, 2006

• Dilution, Excessive Rinsing

April, 2006

• Wastewater Treatment Systems Operator Certification

April, 2005

• Trouble Precipitating Nickel Stripping Solution
• Finding Source of Cyanide in Pretreat Line

March, 2005

• Trouble Precipitating Molybdenum

February, 2005

• Large Month-to-Month Changes in BOD, TSS

July, 2003

• COD Defined

June, 2003

• Cleaning Oil and Grease From the Surface of Stainless Steel

May, 2003

• Monitoring of Specific Gravity of Wastewater

April, 2003

• Reducing COD in wastewater
• Hazardous Materials and Waste Rules

March, 2003

• Emissions From a Phosphating Dip Line
• Waste Treatment Costs

February, 2003

• Hexavalent Chromium on Parts
• Heavy Metals in Powder Coatings
• Automated Composite Sampling Systems

January, 2003

• Lime or Sodium Hydroxide?
• Will MP&M effect me?

December, 2002

• Zinc Waste Treatment
• Wastewater From Chemical Etching of Stainless Steel

 

November, 2002

• Waste Stream Costs From Copper Electroplating

August, 2002

• Wastewater From a Lead-Acid Battery Washing Operation
• Treating Wastewater from Soak Cleaner and Degreasing Operations

July, 2002

• Metal Precipitation in a Full Biological Treatment Plant

June, 2002

• Wastewater Recycling
• Treating Concentrated Cyanide Waste

April, 2002

• Phosphating, Parts Cleaning Definitions With Repect to 40 CFR 433

March, 2002

• Pollution From Metal Finishing Operations
• Water Use in Metal Finishing Operations
• Black Oxide

February, 2002

• Paint Manufacture and its Pollutants
• Dimethyldithiocarbamate (DTC)
• DI and RO Systems for Decorative Nickel Chrome Line
• Ultrafiltration (UF) vs. Microfiltration (MF) for an Iron Phosphating Solution

January, 2002

• Best Practices for Cyanide Treatment
• Meeting POTW COD Limits