Patent ID: 7455773
Filing Date: 2008-11-25
Classification: C02F,Y02W

Abstract:
1. A chemical/biological wastewater treatment method for wastewater with dissolved and undissolved solids and nutrients comprising: a determining effluent discharge and disinfection limits for land application, open water discharge, and solids disposal requirements for a wastewater treatment plant's treated wastewater, b. flow-separating suspended solids in wastewater inflows for disposal to reduce particle size of suspended solids in separated wastewater inflows, c. deodorizing and conditioning the separated wastewater inflows by injecting into the wastewater inflows sulfur dioxide at a pH that generates sufficient sulfurous acid with free SO d. holding the sulfur dioxide treated separated wastewater inflows in the same vessel into which the sulfur dioxide was injected, or a separate detention vessel, which captures any excess SO e. pH adjusting the conditioned wastewater to reduce the biocidal properties of any free SO