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Application of black and grey water separation is one of the effective tools to sustain good wastewater management system. The main obstacles of applying this concept in Egypt are its difficulty to be applied in already existing communities. Thus, starting to apply in the new communities and areas were in situ sanitation is applied. This will lead to minimize the quantities of wastewater resulting from these communities and the clean water consumption which will lead to reducing costs of treatment and disposal.
Applying the concept of separating Grey water from black water in certain communities as an applied demonstration model as in the campus universities through reusing the grey water in irrigating all green areas, as well as act as an education model and applying the same model in some specific tourist resorts and villages. This will reduce drinking water consumption in all institutional buildings and touristic areas, especially in the new constructed touristic villages.
Applying the concept of separating grey and black water in suitable rural communities and reuse the grey water for irrigation will improve the recent sanitation level in effective cost manner as a low cost technology.
Also, using the ecological component of drains in rural areas to treat grey water from housing areas in order to increase the efficiency of septic tanks to receive and treat black water as a sustainable low cost treatment technology in poor rural areas. This will reduce drinking water consumption in all rural areas. Thus, this will solve the problem of sanitation in rural areas especially in scattered housing units.