Wastewater Treatment

Wastewater Treatment , .8 CEUs,
Steve Constable, Vince Hamilton, and Ernest Mayer, instructors

 Wastewater Treatment – Learn wastewater treatment from biological treatment to sludge handling. State of the art sludge handling technology will be presented along with effective effluent control.

Course Outline

1. Wastewater Dewatering Equipment – I

1-1 Classification/Selection Schemes

i) Tiller’s Methods
ii) DuPont’s Media Selection
iii) Purchas’ Classifications
iv) References

1-2 Slow & Moderate Settling Systems

i) Filter Presses

a) Std. Recess & Membrane
b) 30 & 60 bar
c) Drying presses
d) Automatic Tower Presses
e) Types of Plates

ii) Centrifuges

a) Solid Bowl Decater
b) Basket
c) Inverting Basket

iii) Vacuum Filters

a) Rotary Drum (including precoat)
b) Rotary Disc

iv) Belt Filter Presses

v) Leaf, Tubular Candle Filters

vi) References

1-3 Rapid Settling Systems

i) Clarifiers, (including Lamella Plate)

ii) Screens / Strainers

iii) Centrifuges

a) Screen Bowl
b) Pusher

2. Wastewater Dewatering Equipment – II

2-1 Clarification of Liquids

i) Cartridge Filters
ii) Bag Filters
iii) Sand Filters
iv) Pressure Leaf Precoat Filters
v) Sheet Filters
vi) Candle Filters
vii) Basket Strainers
viii) Band Filters
ix) Cross-Flow Microfilters

2-2 Wastewater Filtration

i) Centrifuges
ii) Belt Filter Presses
iii) Vacuum Filters
iv) Automatic Pressure Filters
v) Difficult & Nuclear Wastewater
vi) References

3. Wastewater Dewatering – Testing

3-1 TSS Measurement

3-2 Turbidity

3-3 Laboratory Pressure Filter Apparatus

a) Pouring
b) Pumping

3-4 Porometry for Media Characterization

3-5 Media Water Flux Measurement

3-6 Filter Aid Testing

3-7 Flocculation Testing

3-8 R-Meter for 15 bar Filter Press Simulation

3-9 Filter Presses

3-10 Candle Filters

3-11 Vacuum Leaf Apparatus

3-12 Automatic Pressure Filter

3-13 Sand Filter

3-14 Bottle Centrifuge

3-15 Belt Filter Press Simulator

4. Biological Treatment Processes

4-1 Why Treat Wastewater?

i) Sources
ii) Constituents
iii) Environmental Impacts
iv) Regulatory Controls

4-2 Wastewater Treatment Technology Overview

4-3 Biological Treatment Fundamentals

i) Microorganisms
ii) Heterotrophs vs. autotrophs
iii) Aerobic, anoxic, and anaerobic treatments

4-4 Reactor Configurations

4-5 Measures of Merit

i) Economics
ii) BOD removal
iii) TSS removal
iv) Toxic organic renewal

5. Biological Sludge Managements

5-1 Terminology

5-2 Quantities and Types of Residuals

5-3 Biological Treatment Fundamentals – Why is Dewatering so hard?

i) Biological solids are mostly water
ii) Biological solids are compressible
iii) Inorganic coagulants, organic polymer coagulant/flocculants and body aids are all used
iv) Biological flocs generally react poorly to shear

5-4 Technology Selection Measures of Merits

i) Quantity and Quality of sludge
ii) Multimedia Impacts
iii) Reliability and Robustness
iv) Demonstrated technology
v) Feasibility of Implementation
vi) Regulatory constraints
vii) Liabilities and Public perception

6. Heavy Metals Removal Technologies

6-1 Why Metals Removal is Important

i) Regulatory Considerations
ii) Aquatic Toxicity
iii) Microbial Toxicity & Biological Treatment Effects
iv) Biological Sludge Management

6-2 Chemical and Analytical Considerations

6-3 Analytical Considerations

6-4 Groundwater can present unique challenges

6-5 Metal Hydroxides Solubility Key Points

6-6 Treatment Technologies

i) Precipitation
ii) Precipitation Optimization
iii) Reduction
iv) Sorption
v) Others

7. Water Filtration – Introduction

7-1 General Overview

8. Water Filtration – Treatment

8-1 Coagulation / Flocculation

8-2 Oxidation / Disinfection

9. Water Filtration – Equipment

9-1 Granular Media filters

9-2 Solids Contact Clarifiers

9-3 Clarification / DAF

9-4 Adsorption / IX

9-5 Sludge Gravity Thickening Dewatering

About the Instructors

Stephen Constable is a senior consultant in the Wastewater Group in DuPont Engineering Research & Technology’s Environmental section. He has 22 years experience in wastewater treatment operations and design, with the last 17 years for DuPont Company’s business and production sites. Work experiences include developing numerous conceptual design and cost estimates for wastewater improvements; conducting treatability studies, assisting regulatory negotiations for water discharge permitting, assuring plant environmental compliance, and regulatory advocacy through various industry trade associations and professional organizations. Recent projects include wastewater treatment alternatives studies for anaerobic reactors, biofilters and extended aeration activated sludge treatment; biosolids reuse evaluations; metals removal alternatives studies; biocatalyst fermentation residuals disposal and reuse options evaluations and wastewater treatment effluent recycle. Steve is leader of DuPont’s Biosolids Team, which assesses new biosolids treatment and reuse technologies and assists site sludge management evaluations and optimizations.

Dr. Ernie Mayer is a Senior Consultant with DuPont, Wilmington, DE specializing in SLS technology since 1980. He received his B.S. and M.S. Chem. Eng. Degrees from Columbia University, New York City, NY and Ph.D. in Chem. Eng. From U. of Delaware, Newark, DE. Dr. Mayer has a brilliant professional career, among his numerous awards are Tau Beta Pi, Sigma Xi, Deans’ Lists, 3 Eng. Excellence Awards, 7 Environmental Respect Awards; Class ‘A’ bonus, AFSS Frank Tiller award in 1996, AFSS Fellow award in 2000, and Lifetime Achievement award in 2005 (first non-academic to receive it). He is a member of AWWA, AlChE, WEF, and AFSS (Board of Directors since 1988, Chairman of Chapter Affairs/Users Committee; plus member of three other committees). He has organized/chaired three technical conferences and was the Co-chair of World Filtration Congress in 2004. He published over 200 papers/publications and has 2 patents. In 1991, a remediation technology developed by him was accepted into the EPA SITE program. At the request of President Jimmy Carter, he was asked to participate in the Three-Mile Island nuclear cleanup in 1980. His name is listed in Who’s Who in America; Who’s Who in Science and Environmental Technology; etc.

Vince Hamilton is a senior applications specialist with Westach, Inc.

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