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An Introduction to Sludge Handling, Treatment and Disposal

COURSE NO: C04-021
An Introduction to Sludge Handling, Treatment and Disposal
Course Highlights

This online engineering PDH course will introduce you to processes and equipment for handling, treating and disposing of sludge produced by wastewater treatment plants. It covers sludge pumping, thickening, conditioning, dewatering, digestion, storage and final disposition. It also discusses loading parameters for gravity thickeners and operational parameters for air flotation thickeners. This course will provide guidelines for chemical conditioning of sludge; and advantages, disadvantages and shortcomings of filter presses, basket centrifuges, and solid bowl decanter centrifuges.  Finally it illustrated the design parameters for aerobic and standard and high-rate anaerobic sludge digesters.


This 4 PDH online course is intended for civil, environmental and chemical engineers as well as construction professionals seeking an introduction to sludge handling, treatment and disposal.

Learning Objectives

This PE continuing education course is intended to provide you with the following specific knowledge and skills:

  • Identifying the characteristics, advantages and disadvantages of the four primary types of sludge pumps
  • Recommending pump types for primary, chemical precipitated, trickling-filter, activated, thickened and concentrated sludge
  • Learning about gravity and flotation thickening of sludge, as well as the mass loading guidelines for gravity thickeners
  • Learning about the operational parameters for flotation thickening of sludge
  • Learning how chemical conditioning is used to improve sludge dewaterability and how heat can improve dewaterability of sludge
  • Learning about sludge dewatering using a belt filtration press
  • Understanding the advantages, disadvantages, shortcomings and solutions to problems that may arise with belt filter presses
  • Understanding the design guidelines for sludge drying beds
  • Learning about sludge moisture reduction using vacuum filtration
  • Learning about sludge dewatering using basket centrifuges or using solid bowl centrifuges
  • Understanding the advantages, disadvantages, shortcomings and solutions to problems that may arise with solid bowl decanter centrifuges
  • Learning about plate-and-frame filter presses, as well as manual, semi-automatic and automatic controls for filter presses
  • Learning about continuous and intermittent batch aerobic sludge digestion, as well as anaerobic sludge digestion
  • Understanding the design parameters for aerobic digestion using air, as well as the design parameters for standard- and high-rate anaerobic digesters
Course Document

In this professional engineering CEU course, you need to review the course document titled, "An Introduction to Sludge Handling, Treatment and Disposal".

To view, print and study the course document, please click on the following link(s):
Introduction to Sludge Handling, Treatment and Disposal (888 KB)
Course Quiz
Once you complete your course review, you need to take a multiple-choice quiz consisting of twenty five (25) questions to earn 4 PDH credits. The quiz will be based on the entire document.


The minimum passing score is 70%. There is no time limit on the quiz, and you can take it multiple times until you pass at no additional cost.
Certificate of Completion

Upon successful completion of the quiz, print your Certificate of Completion instantly. (Note: if you are paying by check or money order, you will be able to print it after we receive your payment.) For your convenience, we will also email it to you. Please note that you can log in to your account at any time to access and print your Certificate of Completion.

To buy the course and take the quiz, please click on: