Skip to main content

MAIN DRIVERS FOR THE SOLIDS MANAGEMENT PRACTICES AT THE METROPOLITAN WATER RECLAMATION DISTRICT OF GREATER CHICAGO – A HISTORICAL PERSPECTIVE

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

Public health risks and potential nuisances associated with the generation and disposal of sludge have been the primary factors for implementing various sludge treatment and safe disposal practices at municipal sewage treatment plants. There are usually many drivers behind the evolution of these practices. The Metropolitan Water Reclamation District of Greater Chicago (District) from the dawn of modern sewage treatment has a colorful eight decades history of sludge treatment and disposal practices, the evolution of which has been driven by various factors. The various drivers that have motivated the development, implementation, and/or abandonment of various solids management practices at the District, will be examined in this paper from a historical perspective, under the following headings to delineate how the District has benefited by addressing them in a timely and appropriate manner:



Early Sludge Management Practices (Imhoff tanks, sand bed dewatering – 1920 to 1930)


Beginning and End of Heat Drying and Incineration at Calumet Water Reclamation Plant (WRP)(1932 – 1940s)


Dawn of Lagooning (1935 – to date)


Era of Nu Earth (ca. 1970 to 1979)


Resurgence and Decline of Heat Drying at Stickney WRP (1939 to 1981)


Beginning and End of Wet Air Oxidation (1961 – 1972)


Beginning of Heated Anaerobic Digestion (1964 – to date)


Prairie Plan Conceptualization and Implementation (1971 – to date)


Dawn of Centrifugal Dewatering (1981 – to date)


Air Drying and Production of Class A Biosolids (1983 – to date)


Resurgence of Heat drying? (Beginning of 21st century)


The sludge management practices at the District as they exist today have evolved over roughly eight decades. When the District was formed in 1899, there was no sludge generation, because dilution of sewage was the sole treatment practice However, as large sewage treatment plants were constructed and started functioning at the District during the 1920s and 1930s, sludge resulted from the collection and processing of sewage in the treatment plants. Hence, the treatment and disposal of sludge became a necessity for the District, because indiscriminate disposal of sludge was not only aesthetically objectionable but also posed the risk of spreading diseases in the community.

Although public health risks (e.g., occurrence and spreading of various water borne diseases and the breeding of vectors that propagate disease) and aesthetics (e.g., generation of objectionable odors, etc.,) have been the primary factors for implementing sludge treatment and safe disposal practices at municipal sewage treatment plants, there are several drivers that have motivated the evolution of the sludge management techniques and practices that are specific to the District. These are examined from a historical perspective to delineate how the District has benefited by addressing them in an appropriate manner.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Document Type: Research Article

Publication date: 2002-01-01

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Learn about the many other WEF member benefits and join today
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more