Tough Odor Control Goes Soft

摘要

The Vallejo Sanitation & Flood Control District in the San Francisco Bay area has been engaged in a program to scrub off-gas odors from all aspects of its wastewater treatment plant. Early in the project, the district had covered all of the facilities in its headworks and primary treatment steps to control the off-gas. Later, it developed a novel approach for the management and disposal of its biosolids, including designing a specialized hopper for storage of the plant's dewatered solids and an automated truck-fill process for transporting the solids to a district-owned landfill - Tubbs Island - again minimizing off-gas release.