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This Report presents information on the current state of knowledge of the origins, occurrence, nature and effects of sewer solids for use by engineers, scientists, administrators and water quality planners for the planning, design and operation of sewerage systems. The report addresses both sewer maintenance requirements and environmental protection issues.
Increasing environmental standards, coupled with public expectations, have led to stringent water quality standards. In response to this, it has been necessary to develop new methodologies and computer based analytical techniques to model and understand the performance of all aspects of waste water systems. Fundamental to these techniques is the understanding of the way in which sewer solids contribute to the poor performance of wastewater systems and consequential environmental damage.
The information presented in this Report about the origins, nature, movement, hydraulic and polluting effects of solids in sewers has enabled strategies and rules to be developed for the management of sewerage systems to minimise the deleterious effects of these solids and associated pollutants.
Scientific & Technical Report No. 14
River Water Quality Model No.1
This Scientific and Technical Report (STR) presents the findings of the IWA Task Group on River Water Quality Modelling (RWQM) in a critical evaluation of the current state of the practice in...
Performance-Based Contracts (PBC) for Improving Utilities Efficiency
Performance-Based Contracts (PBC) for Improving Utilities Efficiency: Experiences and Perspectives is a compendium of articles written by members of the PBC taskforce. It focuses on new...
Guidelines for Using Activated Sludge Models
Mathematical modelling of activated sludge systems is used widely for plant design, optimisation, training, controller design and research. The quality of simulation studies varies depending on...
Water Governance in Cities
Urban, demographic and climate trends are increasingly exposing cities to risks of having too little, too much and too polluted water. Facing these challenges requires robust public policies and...
CARE-S
CARE-S presents the result of an extensive EU project, Computer Aided Rehabilitation of Sewer and Storm Water Networks. The projects developed a complete management system for...
Preparing Urban Water Use Efficiency Plans, 2nd Ed.
This second edition is supporting guidance for local water providers such that they can find cost effective ways to reduce water demands through conservation which is often the cheapest source of...
Water and Disasters: Cases from the High Level Experts and Leaders Panel on Water and Disasters
Water is life. But water is also a threat to life. During the past decade, the risks from water-related disasters are increasing and hamper sustainable development by causing political, social,...
