Samir Alnahhal

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Dr. Alnahhal holds a PhD in Mechanical Engineering and transport systems in a major of sanitary and environmental engineering with a focus on sustainable sanitation from Technische Universität Berlin, Germany, in April 2017

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Raul Pacheco-Vega

Flacso México

Louise Blanke

University of Edinburgh

McMaster University

Mizoram University

MUHAS

Egerton University

Harvard University

Rafael Pedrollo de Paes

Universidade Federal de Mato Grosso (UFMT)

Jana Javornik

University of East London

Gwen Robbins Schug

University of North Carolina at Greensboro

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Papers by Samir Alnahhal

Using Slow Sand Filter for Organic Matter and Suspended Solids Removal as Post Treatment Unit for Wastewater Effluent

Environmental Science: Water Research & Technology

Certain applications in wastewater treatment necessitate the implementation of a post-treatment s... more

Recharge Assessment and Modeling Issues to the North of Wadi Gaza Coastal Aquifer

the islamic university, 2009

Beitrag zur Entwicklung nachhaltiger Sanitärtechnik in Schwellenländern

Sanitation is of special concern to the international community, particularly in emerging countri... more Sanitation is of special concern to the international community, particularly in emerging countries. Lack of sanitation is one of the world's leading causes of disease and child death. Worldwide, current progress on sanitation is not sufficient to meet the target of Millennium Development Goals and the sanitation crisis is expanding. Currently, conventional sanitation approaches, both water-based and dry-based, are not designed for effective recovery of valuable resources. Consequently, the economic and environmental sustainability of these approaches may still be questionable. Therefore, sanitation management requires an urgent paradigm shift based on the concept of sustainable sanitation. One of the possible approaches to cope with the sanitation crisis is a resource-oriented approach that considers not only protection of human health and the environment but also closes loops on water and nutrients. Through this thesis, a resource-oriented sustainable sanitation (ROSS) module ...

تقدير الحقن الصناعي ونتائج النمذجة الرياضية الخزان الجوفي الساحلي في شمال وادي غزة

Gaza coastal aquifer faces huge crises of the water resources scarcity and contamination by seawa... more Gaza coastal aquifer faces huge crises of the water resources scarcity and contamination by seawater intrusion. Accordingly, real concerns for planning, development, and management of available resources became so required to alleviate of such crises. This could be by searching for new additional cost effective resources. The artificial recharge using both the stormwater and the reclaimed wastewater, for instance, is one of these new alternative resources. The main aim of the study is primarily to study the possible optimum management scenarios for study area aquifer by adopting the artificial groundwater recharge options. The first part of the research illustrates the artificial recharge background, needs, history, and sources in Gaza strip; the numerical methods for groundwater management; and Optimization-Based Groundwater Management Models. Thus possibly put our hands on the major and minor factors that are necessary to achieve the artificial recharge assessment and groundwater ...

12th Global Conference on Sustainable Manufacturing Developing an Integrated Sustainable Sanitation System for Urban Areas: Gaza Strip Case study

Contribution to the development of sustainable sanitation in emerging countries

Ing. Günther Seliger for the powerful supervision and continuous support of my Ph.D. study and re... more Ing. Günther Seliger for the powerful supervision and continuous support of my Ph.D. study and related research. I appreciate all his contributions of time, patience, motivation, and immense knowledge which have been productive and stimulating. His guidance helped me in my research and the writing of this thesis. He also gave me access to the laboratory and research facilities owned by the department, which led to the successful completion of this work. I could not have imagined having a better advisor and mentor for my Ph.D. study. I am also very grateful to Prof. Dr. Samir Afifi and Prof. Dr. Vera Susanna Rotter for their efforts in co-referring, reviewing, and giving constructive feedback on my work. The joy and enthusiasm they have for their research was contagious and motivational for me, even during tough times in the Ph.D. work. Without their precious support it would not be possible to conduct this research. Besides my advisors, I would like to thank the chairman of the thesis committee Prof. Dr.-Ing. Holger Kohl for his insightful comments and brilliant suggestions, but also for the constructive criticism which incentivised me to widen my research and thinking from various perspectives. Acknowledgment is due to the Islamic University of Gaza for supporting this research and providing me with the necessary infrastructure for performing the laboratory analyses during the monitoring of my module. Thanks also go to Oxfam Great Britain for providing the funding for the implementation of the prototypes. I would like to express my thanks to the NGO, Palestinian Environmental Friends Association for hosting the donation and successful realization and monitoring of the prototypes. My sincere thanks to Mr. Mohammed Alneirab, and Mr. Hani Aljamal, who supervised the implementation and monitoring of my prototypes, and who always kept me informed about my work and who also followed my instruction and comments. Without their precious support it would not have been be possible to conduct this research. Last but not least, special thanks go to my family. Words cannot express how grateful I am to my parents, my wife, my daughters and my sons, for all of the sacrifices that they have made on my behalf. Your prayer for me was what sustained me thus far. Your sufferings during my travels are a gift that I can never forget.

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Contribution to Exemplary In-house Wastewater Heat Recovery in Berlin, Germany

Procedia CIRP, 2016

Thermal energy recovery from wastewater can be established from centralized wastewater treatment ... more Thermal energy recovery from wastewater can be established from centralized wastewater treatment plants and sewage systems. Little attention has been given to In-house wastewater; although it can potentially pave way towards a sustainable heat source. The study was conducted inside student hostels in Berlin, in which water supply, wastewater, and room temperatures variations were observed during winter for one month. It was shown that water supply temperature has insignificant effect on the variations of in-house wastewater temperature as compared to room temperature and water use. The daily average temperature of the in-house wastewater was in a range of 11 °C to 20 °C, with an average of about 15 °C. It was illustrated that by selecting suitable combination of heat exchanger and heat pump, about 40 kWh/h (917 kWh/day) average inhouse wastewater thermal heat can be recovered and about 230 €/day saved. This can contribute to reduction of energy needed for hot water provision by about 30% in the targeted hostels.

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12 GCSM 2014

Developing an Integrated Sustainable Sanitation System for Urban Areas: Gaza Strip Case study

Procedia CIRP, 2015

The two separated fractions will be treated in vertical flow reed bed to produce organic fertiliz... more The two separated fractions will be treated in vertical flow reed bed to produce organic fertilizer and reclaimed water for reuse. The designed and planned system integrated environmental and technical sound approaches with socio-economical aspects. In addition, the designed system implemented the idea of a natural and closed circle of water and nutrients "from food to food".

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Artificial Recharge Assessment and Modeling Issues to Wadi Gaza Coastal aquifer

Development of Low Cost Solid-Liquid Separation Prototype Used for Recovering Nutrients from Wastewater in the Gaza strip

Procedia Manufacturing

A Simulation/Optimization approach to manage groundwater resources in the Gaza aquifer (Palestine)

, http://www.environment.gov.ps • Center for Advanced Studies, Research and Development in Sardin... more

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A Simulation/Optimization Approach to Manage Groundwater Resources in the Gaza Aquifer (Palestine)

A decision support system based on a simulation/optimization approach has been developed and appl... more A decision support system based on a simulation/optimization approach has been developed and applied to the Gaza Strip coastal aquifer (Palestine) to manage sustainable aquifer development under effective recharge operations and water quality constraints. The paper describes model development and simulation results.

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Using Slow Sand Filter for Organic Matter and Suspended Solids Removal as Post Treatment Unit for Wastewater Effluent

Environmental Science: Water Research & Technology

Certain applications in wastewater treatment necessitate the implementation of a post-treatment s... more

Recharge Assessment and Modeling Issues to the North of Wadi Gaza Coastal Aquifer

the islamic university, 2009

Beitrag zur Entwicklung nachhaltiger Sanitärtechnik in Schwellenländern