The document focuses on identifying the economic, financial and environmental benefits of wastewater recycling from the perspective of public spending. Also provides information on the evolution and current practices of wastewater recycling internationally and the international and national regulatory and policy frameworks that guide wastewater recycling. It presents possible strategies for city and state planners and policy makers to initiate the discourse on wastewater recycling and reuse.
Resource Type: Literature
Understanding nitrous oxide production by ammonia oxidizing bacteria in an enriched nitrifying sludge
This thesis aims to experimentally assess and mathematically model the effect of several key operational parameters on N2O production by AOB as well as the contributions of different N2O production pathways to total N2O emission.
Biogas valorization and efficient energy management – Best practices for improved sludge digestion
This review covers state-of-the-art technologies for advanced anaerobic digestion of municipal sewage sludge. It is based on an extensive review of literature and available data, focussing on processes which have been realized in full-scale plants. The review includes information on single-stage mesophilic digestion, thermophilic digestion, temperature-phased digestion, high-load digestion and other process modifications, as well as mechanical, thermal, chemical, and biological disintegration methods. All processes are described with a set of key performance indicators such as degradation rate of volatile solids, biogas yield, return load, effects on dewatering, and capital costs.
Uso seguro del agua para el reúso
Gives a broad picture of wastewater treatment and reuse; its safe use as a fundamental aspect in water efficiency and security; technologies and biological processes for the treatment of wastewater destined for reuse, policies and regulations for the reuse of wastewater in some countries of Latin America (document is in Spanish).
The Biosolids Emissions Assessment Model (BEAM)
Biosolids management practices are evaluated based on environmental, economic and social impacts. A consideration of increasing importance is the impact of greenhouse gas (GHG) emissions from biosolids (treated sludge). BEAM tool was developed for calculating GHG emissions from biosolids management.
Water Well Rehabilitation and Reconstruction
This is the first professional’s guide to every aspect of pollution control for all types of water bodies. From at-the-source prevention to technical treatment solutions, the Water QualityControl Handbook brings readers expert guidance on assessing,controlling, eliminating, and remediating the many factors that contribute to water pollution.
Benefits and drawbacks of thermal pre-hydrolysis for operational performance of wastewater treatment plants
This paper presents benefits and potential drawbacks of thermal pre-hydrolysis of sewage sludge from an operator’s prospective. The innovative continuous Thermo-Pressure-Hydrolysis Process (TDH) has been tested in fullscale at Zirl wastewater treatment plant (WWTP), Austria, and its influence on sludge digestion and dewatering has been evaluated. A mathematical plant-wide model with application of the IWA Activated Sludge Model No.1 (ASM1) and the Anaerobic Digestion Model No.1 (ADM1) has been used for a systematic comparison of both scenarios – operational plant performance with and without thermal pre-hydrolysis. The impacts of TDH pre-hydrolysis on biogas potential, dewatering and return load in terms of ammonia and inert organic compounds (Si) have been simulated by the calibrated model and are displayed by Sankey mass flow figures. Implementation of full scale TDH process provided higher anaerobic degradation efficiency with subsequent increased biogas production (+75-80%) of waste activated sludge (WAS). Both effects – enhanced degradation of organic matter and improved cake’s solids content from 25.2 to 32.7% TSS – promise a reduction in sludge disposal costs of about 25%. However, increased ammonia release and generation of soluble inert Si was observed when TDH pre-hydrolysis was introduced to WWTP.
Sewage Treatment Plants: Economic Evaluation of Innovative Technologies for Energy Efficiency
Sewage Treatment Plants: Economic Evaluation of Innovative Technologies for Energy Efficiency aims to show how cost saving can be achieved in sewage treatment plants through implementation of novel, energy efficient technologies or modification of the conventional, energy demanding treatment facilities towards the concept of energy streamlining.
Energy saving opportunities for wastewater facilities: A review
Energy saving opportunities for wastewater facilities: A review
Energy self-sufficiency as a feasible concept for wastewater treatment systems
Energy self-sufficiency as a feasible concept for wastewater treatment systems