RDP has over 30 years of hands-on field experience with the products that we make. We would like to share with you some of the interesting technical information we have available. This is by no means an all-inclusive library, so if you have questions don’t hesitate to contact us.


The American Water Works Association
The Water Environment Federation
The National Lime Association
The EPA’s 503 Regulation
Carmeuse Lime
Jenike & Johanson

Beneficial Biosolids, Sydney's Sludge Solutions
Theiss uses RDP EnVessel Pasteurization at North Head, Sydney, Australia. Asia-Pacific Magazine of Environmental Business & Technology (February, 1996)

Lime Only Pasteurization and EnVessel Pasteurization
Covers both processes with regard to land application considerations, odor considerations, and a direct comparison to each other. RDP Technologies (March, 1994)

Lime Pasteurization, an Extended Evaluation
Considers all aspects of this process, including federal regulations, theory, costs, descriptions of pilot unit, test procedures, sample and testing methods, test results, long-term analysis, cement kiln dust comparison, and acaris egg testing. RDP Technologies

Evaluation of Two Methods for Lime Stabilization of Biosolids
Lime Only Stabilization and EnVessel Pasteurization are evaluated by the City of Cookville, Tennessee. Costs and biosolids analysis are focused on here. Karen G. Harrison, J. R. Wauford & Company (1993)

Startup and Operation of a Lime EnVessel Pasteurization Process at Cookville, TN
Paper covering design considerations, sludge characteristics, process startup, performance testing, and recommendations. Karen G. Harrison, J. R. Wauford & Company (1993)

Biosolids Pasteurization: A New Approach in Cheraw, S.C.
Article covering Cheraw's change in waste disposal methods due to stricter EPA regulations. Includes Chewraw's solids production, lime treatment process description, process features, system operation, biosolids disposal, and production cost. Guy E. Slagle Jr. P.E. & J. Ted Morris (1993)

The Design and Cost of Class A and B treatment of Biosolids Using Post-Lime Stabilization and Pasteurization
Articles studies these methods of pathogen reduction with regards to EPA regulations. Covers full-scale pilot studies, analyses of results, variation of pH, temperature and percent solids within samples, design criteria and considerations. G. Paul Muhs

Upgrading the City of O'Fallon, Missouri Sludge Treatment Process to Produce Class "A" Biosolids
Report by Bently C. Green, Project Engineer Horner & Shifrin Inc. with assistance from Benny Hedden, City Engineer City of O'Fallon, Missouri & Mike Dougherty, Division Manager Allicance Water Resources. Presented at Missouri Water Environment Association Annual Meeting in Osage Beach, Missouri. Discusses how to upgrade to Class A or Class B biosolids system. Covers Aerobic Digestion, Anaerobic Digestion, ATAD, Lime Stabilization. (March 1997)

Beneficial Co-Utilization - Lenoir, North Carolina
WEF Residual and Biosolids Management Speciality Conference. Report by Len Hagaman Jr. M.S., Ph.D., Director of Public Works and Engineering.

Nord-Jarlsberg Avfallsselskap ANS in Holmestrand, Norway System Evaluation
Summary report by Lasse Vrale, Assoc. Professor at the Agricultural University of Norway, on first low lime and electricity treatment process in Norway.

Is Time-Temperature Really Important?
The 503 Regulations outline specific Time-Temperature Regimes that must be met in order to qualify under Class "A" for Alternatives 1 & 2. Many facilities are actually operating outside of the prescribed time-temperature and considering their end product to be Class "A" Material, under the assumption that the Regulations are unnecessarily stringent and what they are doing is "good enough". This raises the question of whether time and temperature is really important.

Solve Solids Flow Problems in Bins, Hoppers, and Feeders
Jenike & Johanson Incorporated. Written by J. Marinelli and Dr. John W. Carson. Uncovering the differences between mass-flow design and funnel-flow design in storage bins.