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Biosolids

ANDRITZ type "TC" Centrifuge Drive (181 KB)

Disinfection

Application of the WERF Model for Designing a UV System for Disinfecting Wastewater (8.5 MB)

The Dying of the Light (3 MB)

Effect of UV Transmission, Suspended Solids and Photoreactivation on Microorganisms in Wastewater Treated with UV Light (4.6 MB)

History of UV and Wastewater (18 MB)

Inactivation of Cryptosporidium parvum by Medium-Pressure Ultraviolet Light in Finished Drinking Water (9.5 MB)

Medium-Pressure UV for Oocyst Inactivation (10 MB)

Review of UV Lamps (3.7 MB)

Ultraviolet Disinfection of Wastewater: Effect of Dose on Subsequent Photoreactivation (9 MB)

UV Disinfection Costs (12.5 MB)

UV Disinfection of Small Groundwater Supplies (10.6 MB)

Pumps

Constant Wetwell Level Control Saves Costs and Energy (558 KB)

Prerostal Pumping System (819 KB)

Prerotation Pumping System (828 KB)

Valves and Surge Control

Air Release Valve Sizing for Deep Well or Turbine Type Pumps (3.5 MB)

Air Valve Locating & Sizing for Transmission Lines (3.8 MB)

Automatic Valves for the Water Utility (10.2 MB)

Automatic Waste Water Valves (3.4 MB)

Check Valves (3.3 MB)

Check Valves with Brains (2.6 MB)

Control Valves for Pump Stations and Distribution (9.3 MB)

Control of Water Hammer by Automatic Valves (6.7 MB)

Determining Surge Potential in Water and Sewage Forcemains (3.8 MB)

Liquid Level Control By Automatic Valves (1.4 MB)

Pressure Reducing Valves (419 KB)

Selection and Application of Rate-Of-Flow Control Valves (2.8 MB)

Water and Wastewater Treatment

Activated Sludge System with High Effluent Quality and Minimal Sludge Production (81 KB)

Evaluating Aeration Systems (607 KB)

Special SBR Provides 99% Removal of Organics for WWTP (1.1 MB)

Retrofitting A Poorly Operating Activated Sludge System with Membranes (294 KB)