Solids Train Strategy
Insufficient capacity, Nocardia accumulation, and nuisance gas emissions were the driving forces for developing an improved anaerobic digester design at…
Iron Sponge Reduces Toxic Emissions
To control emissions from a cogeneration facility that will use digester gas for fuel, the Sacramento Regional Wastewater Treatment Plant…
Staff Solves Silver Problem
Faced with fines totaling more than $100,000 for regularly exceeding its silver effluent limit of 1.2 ug/L, the Wastewater Department…
Update on Secondary Clarifiers: Design, Operation, and Performance
Activated sludge is the most commonly used biological process for treating municipal and industrial wastewaters. Although the following discussion focuses…
The Ownership of a Facility Management System
We are all too familiar with computer systems being procured, installed, loaded with data and after spending a lot of…
Integrating Modeling with GIS for Water Supply
Anyone who has used a computer model for planning a water distribution system knows that the actual running of the…
Integrating Modeling with AM/FM For Water Supply
Anyone who has used a computer model for planning a water distribution system knows that the actual running of the…
The Ownership of a GIS
We are all too familiar with computer systems being procured, installed, loaded with data and after spending a lot of…
Design and Operations Experience with Flocculator-Clarifiers in Large Plants
Historically, secondary clarifiers have contributed to instability in plant performance. The flocculator-clarifier development has demonstrated in a variety of plant…
A Discussion of The Advantages of Co-Thickening of Primary and Secondary Sludges in Dissolved Air Flotation Thickeners
Dissolved air flotation thickeners (DAFTS) are commonly used to thicken waste activated sludge; however, their use for co-thickening primary and…
Removal of Polycyclic Aromatic Hydrocarbons and Heterocyclic Nitrogren Compounds in a Municipal Treatment Plant
Emissions of polycyclic aromatic hydrocarbons (PAHs) and heterocyclic nitrogenous compounds (HNCs) were measured at a publicly owned treatment works (POTW)…
Biological Treatment for the Control of Toxic Contaminants in Bleached Kraft Mill Effluents
Much emphasis has been placed on the adverse environmental effects of effluents from chemical pulp mills utilizing chlorine-based bleaching. Bleached…