Nitrification Design for the Central Valley Facility
This paper presents the results of a nitrification alternatives study that was performed at the Central Valley Water Reclamation Facility…
Treatment Plant Design Optimization: How Big is Big Enough
This paper presents the results of a re-rating study for the activated sludge system at the Municipality of Metropolitan Seattle’s…
Atlanta’s Phosphorus Removal Program Interim Biological – Chemical Removal of Phosphorus
The City of Atlanta is currently expanding its water reclamation centers (WRCs) to meet a 0.75 mg/l effluent phosphorus limit….
It’s True! Environmental Regulations That Can Improve Your Bottom Line
The California Source Reduction and Hazardous Waste Management Act of 1989, commonly referred to as Senate Bill 14 or SB14,…
New Developments in Ultraviolet Disinfection Technology for Water Reclamation
Ultraviolet (UV) disinfection is an emerging technology for production of reclaimed water, but development and testing are proving its effectiveness….
Converting a Surface Water Supply From Agricultural to Municipal Use
Nine communities in California’s Central Valley are planning a regional drinking water supply system which will convert some agricultural surface…
Evaluating Activated Sludge Secondary Clarifier Performance: A Protocol
To establish a consistent methodology for evaluating secondary clarifier performance, the ASCE Clarifier Research Technical Committee prepared procedural guidelines in…
High Rate Nitrifying Trickling Filters
A two year pilot plant study has been performed in order to evaluate a nitrifying trickling filter (NTF) process within…
Driving a CNG-Powered Sedan in California
This paper presents pertinent aspects of the operation of a sedan automobile on compressed natural gas (CNG) in Northern California….
Critical Process Design Issues in Selection of the TF/SC Process For a Large Secondary Treatment Plant
The Greater Vancouver Sewerage and Drainage District (GVS&DD) is a major regional wastewater agency serving Vancouver, Canada and surrounding municipalities….
Efluente de Alta Calidad Obtenido con Filtros Percoladores de Baja Tecnologia
Antes de 1973, el proceso a base de filtros percoladores era el sistema de tratamiento de aguas residuales más empleado…
Urban Surface Water Management Planning for the Hedges Creek Drainage Basin
The purpose of this paper is to discuss the technical evaluation and major components of the Hedges Creek subbasin management…