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A solid waste management (SWM) preparation mission was carried out mid-2004 for the World Bank Coastal Cities Environmental Sanitation Project (CCESP). The purpose of the mission was to assess the SEM needs of the cities of Dong Hoi, Nha Trang, and Quy Nhon over a fifteen-year planning horizon, taking into account the quantity, character, and distribution of solid wastes, disposal alternatives and management systems governing administration and finance. The World Bank is now supporting a consultancy, the objectives of which are to present a range of options for use of the private sector in solid waste collection and septage management, to agree a preferred approach for each CCESP city, and then to develop a detailed implementation program. The consultancy is to be conducted over two separate trips to the three project cities. The first trip was conducted between 13 and 30 September, 2005 and included a visit to Da Nang to discuss private sector participation initiatives introduced in that city as part of the World Bank's Three Cities Sanitation Project. This paper presents the initial findings of the public-private partnership (PPP) consultancy team and addresses each key activity. The findings of the visit to Da Nang are also included in this paper.

Public Sector Reform --- Sanitation --- Sanitation and Sewerage --- Waste Disposal and Utilization --- Water Supply and Sanitation

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Water --- Sewerage --- Runoff --- Water quality management --- Water quality trading --- Pollution --- Law and legislation --- Total maximum daily load --- Science --- Technology & engineering

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Irrigation --- Drainage --- Evaluation --- Management --- #ABIB:dd.Prof.J.Feyen --- 631.67 --- 631.62 --- 631.62 Drainage --- 631.67 Irrigation --- Water in agriculture --- Chemigation --- Land drainage --- Agricultural engineering --- Hydraulic engineering --- Reclamation of land --- Sanitary engineering --- Sewerage --- Irrigation - Evaluation --- Irrigation - Management --- Drainage - Evaluation

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Water supply. Water treatment. Water pollution --- Sewage --- Water --- Water-supply --- Eaux usées --- Eau --- Purification --- Pollution --- Government policy --- Epuration --- Approvisionnement --- Politique gouvernementale --- Civil & Environmental Engineering --- Engineering & Applied Sciences --- Environmental Engineering --- Hydrology --- Availability, Water --- Water availability --- Water resources --- Natural resources --- Public utilities --- Water resources development --- Water utilities --- Domestic effluent --- Domestic sewage --- Domestic wastewater --- Effluent (Sewage) --- Industrial effluent --- Industrial wastewater --- Sewage effluent --- Waste water --- Waste waters --- Wastewater --- Wastewaters --- Sewerage --- Politique et protection de l'environnement

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Recent years have seen a very marked increase in the desire to protect the environment from any and all malign influences. The maintenance or restoration of water quality is a vital part of that protection. A sine qua non of control system development for modern sewer networks is therefore the preservation of the water system around a network’s outflow(s). Several approaches have been proposed for the optimisation of sewage control and Optimal Real-time Control of Sewer Networks provides a comparative synthesis of a central sewer network flow control based on two of these: nonlinear-optimal and multivariable-feedback control. In nonlinear optimal control, control and operational objectives are treated directly by the formulation of a nonlinear cost function minimized according to system constraints and the relevant state equation. The comparison presented uses the rolling horizon method for the real-time application of the optimal control algorithm with updated inflow predictions and updated initial conditions. On the other hand, the linear multivariable feedback regulator – considered with and without feedforward terms to account for external inflows – is developed via a systematic linear-quadratic procedure including precise specifications on model structure, equations and the choice of nominal steady state and quadratic criterion. The comprehensive testing and comparison of these protocols is undertaken on the basis of their respective control results for the real large-scale sewer network located around the river Obere Iller in Bavaria. The control strategies now implemented within this network are based on this study. Starting at the selection of possible methods of control and moving to the actual implementation of those methods in a real sewer system, Optimal Real-time Control of Sewer Networks will be invaluable to control and civil engineers working in sewage flow and wastewater treatment and of great interest to academics wishing to see how their ideas on optimal control are likely to work out when practically applied. Advances in Industrial Control aims to report and encourage the transfer of technology in control engineering. The rapid development of control technology has an impact on all areas of the control discipline. The series offers an opportunity for researchers to present an extended exposition of new work in all aspects of industrial control.

Combined sewers --- Real-time control. --- Automatic control. --- Real-time computer control --- Automatic control --- Sewerage --- Environmental pollution. --- Waste disposal. --- Civil engineering. --- Control and Systems Theory. --- Water Industry/Water Technologies. --- Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution. --- Waste Management/Waste Technology. --- Civil Engineering. --- Engineering --- Public works --- Chemical pollution --- Chemicals --- Contamination of environment --- Environmental pollution --- Pollution --- Contamination (Technology) --- Asbestos abatement --- Bioremediation --- Environmental engineering --- Environmental quality --- Factory and trade waste --- Hazardous waste site remediation --- Hazardous wastes --- In situ remediation --- Lead abatement --- Pollutants --- Refuse and refuse disposal --- Environmental aspects --- Control engineering. --- Water-supply. --- Water pollution. --- Waste management. --- Aquatic pollution --- Fresh water --- Fresh water pollution --- Freshwater pollution --- Inland water pollution --- Lake pollution --- Lakes --- Reservoirs --- River pollution --- Rivers --- Stream pollution --- Water contamination --- Water pollutants --- Water pollution --- Waste disposal in rivers, lakes, etc. --- Availability, Water --- Water availability --- Water resources --- Natural resources --- Public utilities --- Water resources development --- Water utilities --- Control engineering --- Control equipment --- Control theory --- Engineering instruments --- Automation --- Programmable controllers