This paper describes the design and implementation of multimedia data processing elements for a home sewer platform. Generally, a home sewer can be considered as an integrated form of a multimedia data sewer, home control sewer, and home information sewer. As a multimedia data sewer, the proposed scheme has a digital TV receiver module and a multimedia codec module. Thus, watching digital TV an...

Sewer line failures are a major cause of stream impairment in urban areas. While many sewer line failures can be readily identified and corrected, other failures may be more difficult to remedy. This paper examines the general problem of sewer line failures. Specifically, we discuss 1) the observed causes of sewer line failures, 2) methods for determining which streams are being affected by sew...

Biological nutrient removal (BNR) technology can suffer poor performance or complete failure due to the fastidious nature of the bacteria used in the system. The bacteria involved necessitate strict operating conditions, multiple zones with one or more recycling lines, carbon source augmentation, and efficient aeration. For wastewater treatment plants receiving significant combined sewer overfl...

Sewers are aging, expensive assets that attract public attention only when they fail. Sewer operators are under increasing pressure to minimise their maintenance costs, while preventing sewer failures. Inspection can give early warning of failures and allow economical repair under noncrisis conditions. Current inspection techniques are subjective and detect only gross defects reliably. They can...

Inflow/infiltration (I/I) and infiltration/exfiltration (I/E) are interactive processes which dynamically affect sewer and groundwater performance. The incidence and condition of "critical" sewers in the UK are identified together with methods of quantifying I/I and I/E as well as their impact on wet weather sewer performance and on urban groundwater pollution. Whilst the impacts of sewer trenc...