المُلخص التنفيذي
يُصنع مِرحاض الدفْق بالسيفون Cistern Flush Toilet عادةً من الخزف، وهو واجهة مُستخدم تُصنع بكميات كبيرة بواسطة المصانع، ويتكوّن مِرحاض الدفْق من: خزان للمياه (سيفون، أو صندوق طرد) إذ يوفر مياه الشطف لتنظيف المِرحاض، وفتحة سفلية تُودع بها فضلات الجسم.
يتميز مِرحاض الدفْق بالسيفون بدمجه للحاجز المائي Water Seal (أو كوع الرائحة) ؛ لمنع الروائح من الارتداد مرة أخرى من خلال أنابيب السباكة. أما المياه المُخزَّنة في السيفون Cistern الموجود أعلى فتحة المِرحاض فيتم إطلاقها عن طريق سحب أو دفع المقبض. وهذا يسمح للماء بالجريان إلى فتحة المِرحاض والاختلاط بفضلات الجسم وحملها للتخلص منها.
المُدخلات | المُخرَجات |
---|---|
البراز، البول، مياه تنظيف المرحاض، (مياه تنظيف الشرج)، (مواد التطهير الجافة) |
المياه السوداء |
المُلاءَمَة
لا يجب التفكير في مِرحاض الدفْق إلا إذا توفرت محليًّا كل الوصلات واللوازم والملحقات والأدوات الخاصة. ويجب أن يتصل مِرحاض الدفْق بمصدر دائم للمياه من أجل الدفْق، كما يجب أن يتصل أيضًا بإحدى تقنيات الجمع والتخزين/المُعالجة أو النقل وذلك لاستقبال المياه السوداء. ويناسب مِرحاض الدفْق الاستخدامات الخاصة والعامة على حد سواء.
اعتبارات التصميم
تُستخدم المراحيض الحديثة من 6 إلى 9 لترات من المياه للدفْق بينما صُمِمَت النماذج القديمة لاستخدام كميات أكبر من مياه الدفْق تصل إلى 20 لترًا. تتوفر حاليًا أنواع مختلفة من مراحيض الدفْق التي تستخدم كميات أقل من 3 لترات من المياه للدفْق. وفي بعض الحالات نجد أن كمية المياه المُستخدمة للدفْق لا تكفي لإفراغ فتحة المِرحاض، وبالتالي علَى المُستخدم أن يسحب السيفون مرتين أو أكثر لتنظيف فتحة المِرحاض جيدًا، مما يناقض الغرض الأساسي وهو ترشيد استهلاك المياه.
يتطلب تركيب مِرحاض الدفْق سبّاكًا ذو خبرة، وعليه التأكد من أن كل الصمامات متصلة بشكل صحيح، ومحكمة الإغلاق كما ينبغي، وبالتالي سيُضمن الحد من التسرب.
الجوانب الصحية / القبول
مِرحاض آمن ومريح في الاستخدام بشرط الحفاظ على نظافته.
التشغيل والصيانة
على الرغم من أن مياه الدفْق تشطف فتحة المِرحاض باستمرار إلا أنه ينبغى أن يتم غسل المِرحاض للتنظيف، وأن يحدث ذلك بانتظام للحفاظ على النظافة الصحية، ولمنع تراكم الأوساخ. كما تُعتبر الصيانة مطلوبة لاستبدال أو إصلاح بعض الأجزاء الميكانيكية أو الوصلات، ويجب أن تُجمع المُنتجات التي تُستخدم للنظافة أثناء الطمث في صندوق منفصل.
الصرف الصحي الموقعي والمركزي - للمدن والتجمعات السكانية الصغيرة
بناء الحمامات وطرق تحسينها وصيانتها
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EAWAG/SANDEC (2008): Sanitation Systems and Technologies. Lecture Notes . (= Sandec Training Tool 1.0, Module 4 ). Duebendorf: Swiss Federal Institute of Aquatic Science (EAWAG), Department of Water and Sanitation in Developing Countries (SANDEC)Assembling and Installing a New Toilet
Describes how to install a toilet with full color photos and step-by-step instructions.
MAKI, B. (2005): Assembling and Installing a New Toilet. Hammerzone.com URL [Accessed: 25.08.2014]The Flush Toilet is Ecologically Mindless
Critical article by environmental activist and Stockholm Water Price Laureate Sunita Narain, on why it is mindless to waste so much clean water to flush away excreta.
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TILLEY, E., ULRICH L., LÜTHI, C., REYMOND P. and ZURBRÜGG C. (2014): Compendium of Sanitation Systems and Technologies. 2nd Revised Edition. Duebendorf, Switzerland: Swiss Federal Institute of Aquatic Science and Technology (Eawag) URL [Accessed: 03.05.2023] PDFCompendium of Technologies
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Describes each part of the toilet in detail and provides links to other tools, such as how to install a toilet, how to fix a leaking toilet and other toilet essentials.
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TILLEY, E. ULRICH, L. LUETHI, C. REYMOND, P. SCHERTENLEIB, R. ZURBRUEGG, C. (2014): Compendium of Sanitation Systems and Technologies (Arabic). 2nd Revised Edition. Duebendorf, Switzerland: Swiss Federal Institute of Aquatic Science and Technology (Eawag) PDFSick Water? The central role of wastewater management in sustainable development
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CORCORAN, E. ; NELLEMANN, C. ; BAKER, E. ; BOS, R. ; OSBORN, D. ; SAVELLI, H. (2010): Sick Water? The central role of wastewater management in sustainable development. A Rapid Response Assessment. United Nations Environment Programme (UNEP), UN-HABITAT, GRID-Arendal URL [Accessed: 05.05.2010] PDFSanitation Systems and Technologies. Lecture Notes
Lecture notes on technical and non-technical aspects of sanitation systems in developing countries.
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The paper presents an introduction to ecological sanitation (ecosan) principles and concepts including re-use aspects (available nutrients and occurring risks), and case studies of ecosan concepts in both industrialised and developing countries.
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The purpose of this guide is to assist local contracting authorities and their partners in identifying those sanitation technologies best suited to the different contexts that exist within their town. The first part of the guide contains a planning process and a set of criteria to be completed; these assist you in characterizing each area of intervention so that you are then in a position to identify the most appropriate technical solutions. The second part of the guide consists of technical factsheets which give a practical overview of the technical and economic characteristics, the operating principle and the pros and cons of the 29 sanitation technology options most commonly used in sub-Saharan Africa.
MONVOIS, J. GABERT, J. FRENOUX, C. GUILLAUME, M. (2010): How to Select Appropriate Technical Solutions for Sanitation. (= Six Methodological Guides for a Water and Sanitation Services' Development Strategy , 4 ). Cotonou and Paris: Partenariat pour le Développement Municipal (PDM) and Programme Solidarité Eau (pS-Eau) URL [Accessed: 19.10.2011]How to Manage Public Toilets and Showers
The purpose of this decision-making aid is to provide practical advice and recommendations for managing toilet blocks situated in public places. It is primarily aimed at local decision-makers in developing countries and at their partners (project planners and managers).
TOUBKISS, J. (2010): How to Manage Public Toilets and Showers. (= Six Methodological Guides for a Water and Sanitation Services' Development Strategy , 5 ). Cotonou and Paris: Partenariat pour le Développement Municipal (PDM) and Programme Solidarité Eau (pS-Eau) URL [Accessed: 19.10.2011]Mix or NoMix - A Closer Look at Urine Source Separation
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http://www.hometips.com/
This page describes each part of the toilet in detail and provides links to other tools, such as how to install a toilet, how to fix a leaking toilet and other toilet essentials.
A Better Toilet For A Cleaner World
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