Wastewater Treatment

Recommended Time & Experience: No experience or training the in the art and science of electroplating.  For those a few years away from taking any chemistry courses, the online Chemistry Refresher course offered by NASF Foundation is highly recommended, but not required as a pre-requisite. 

Description:  This course presents a broad range of information related to removing, neutralizing, and/or destroying pollutants found in metal finishing wastewater.

Secondary Elective: Master Surface Finishers (MSF) designation. 

Designed For:  But not limited to: Operators and Supervisors of wastewater pre-treatment systems as well as Sales personnel who work for wastewater treatment suppliers.

Course Content Level:  Foundational (100 Level)

Approx Hours to Complete:  10 Hours‎

Learning Objectives:  Those completing this course and/or earning a certificate in Wastewater Treatment are able to demonstrate:

  • An understanding of the basic chemical reactions conducted in wastewater treatment as well as the specific equipment required.
  • Knowledge of basic operation of pH and Oxidation Reductin Potential (ORP) control systems and alternative methods of treatment.

Course Options

  • Web-Based

    Dates: July: 9, 10, 16,17, 23, 24, 30, 31
    Registration Deadline: June 28, 2024
    Member: $1,050 | Non-Member: $1,400

  • Home-Study

    Member: $900| Non-member: $1300

  • Optional Exam

    Member: $200| Non-member: $300

Course Description

1. Chemistry of Water, Part 1
This is a two-part lesson detailing the relationship between chemical principles and water quality. The first part of this lesson will provide a basic background in inorganic chemistry for wastewater treatment operators, including basic chemical reactions of waste treatment. Concepts such as specific gravity, the definition of pH, acids, bases, inorganics and organics are discussed.
2. Chemistry of Water, Part 2
The second part of this lesson focuses on the water molecule. Topics covered include solubility, conductivity, pH buffers, water hardness, acid base reactions and stoichiometry.
3. Water Quality
This lesson details water quality issues, focusing on the conditions that affect water quality such as TOC, COD, particulates, heavy metals and non-metallic contaminants. Disinfection using UV is covered in detail, along with use of rinsing technologies that reduce water usage, making wastewater treatment systems more effective. Mass and flow balances are also briefly described.
4. Introduction to Wastewater Treatment
This lesson provides information on operations and devices that are crucial to successful wastewater treatment, including pH control, ORP control, mixing, retention times and chemical feed rates. A discussion of regulations and upset response is also provided. Calculation of retention times, use of coagulants and flocculants and flow equalization are also covered.
5. Process Instrumentation
This lesson covers the instrumentation measure and control used in wastewater treatment. ORP, pH, flow rate, and conductivity measurement/control are covered in detail. Also discussed are chemical metering pumps and methods of reagent addition.
6. REDOX Treatments
This lesson provides detailed guidance for the most common methods of chemically treating wastes containing cyanide or chromium (+6). Batch and flow through treatments are discussed. Cyanide treatment via alkaline chlorination is a major focus of this lesson;
ozonation is also covered. Chromium reduction via reaction with a broad range of reagents is another focus of this lesson.
7. Alternate Treatments
This lesson covers the treatment of difficult-to-treat wastewater, such as chelated wastes. Treatments using ferrous sulfide, DTC, starch xanthate, bisulfites and other strong reducers such as borohydride are covered. A special focus is given to treatment protocols for electroless nickel and electroless copper rinses and spent solutions.
8. Suspended Solids Separation
This lesson discusses flocculation, clarification, sludge thickening, and filtration of chemically treated wastewater. Gravity and parallel plate/tube type clarifier design and operational parameters are discussed along with newer technologies such as microfiltration and ion exchange systems. Sludge drying and polishing systems employed after clarification are also covered.
9. Carbon Treatment of Wastewater
This lesson details the use of carbon to remove organics from wastewater that is destined to be recycled back to the plating process. Guidance as to source of carbon, powdered vs. granular, and equipment for flow-through carbon treatment of wastewater is provided.
10. Treatments for Oily Wastewater
This lesson provides the generally available options for removing oily waste from wastewater. The lesson focuses on coalescing filters, dissolved air flotation, membrane-based systems, lipophilic filtration and chemical treatment followed by gravity separation.