Possibilities of greywater reuse in non-potable in situ urban applications, according with its quality and quantity
نویسندگان
چکیده
-Water resources are being, over decades, intensively over explored and polluted, and it is estimated that in a few years, it is reached highly values of water stress in Europe. Portugal is already in the ranking of countries with medium water stress (10-20%). To avoid the deterioration of this situation it is imperative to consider different approaches of water management, such as water reuse strategies. Toilet flushing, pavements and car washing and garden irrigation are uses in which the quantity of greywater dispended is high and the needs in terms of quality can be lower than the potable water, and so these can represent potential reuse applications in a unfamiliar dwelling. Greywater in situ reuse can be a practice to consider since its quality and quantity is enough to consider the uses referred above. In this context, a research of the quantity and quality of greywater produced in a dwelling, allows to reuse only the water with the best characteristics and so it will require a lower level of treatment. In this paper is presented the quantitative and qualitative characterization of greywater, as well as the required quantity for its reuse in some in situ nonpotable urban applications.
منابع مشابه
Performance of UV disinfection and the microbial quality of greywater effluent along a reuse system for toilet flushing.
This paper examines the microbial quality of treated RBC (Rotating Biological Contactor) and MBR (Membrane Bioreactor) light greywater along a continuous pilot-scale reuse system for toilet flushing, quantifies the efficiency of UV disinfection unit, and evaluates the regrowth potential of selected microorganisms along the system. The UV disinfection unit was found to be very efficient in reduc...
متن کاملGreywater Characteristics and Reuse in Tower Gardens in Peri-Urban Areas – Experiences of Kawaala, Kampala, Uganda
This study was undertaken to create an understanding of greywater characteristics and to demonstrate a low cost reuse option involving application of small tower gardens for Greywater treatment and reuse in a peri-urban settlement, Kawaala in Kampala city, Uganda. To realise this, field surveys, greywater and soil sampling and analysis and, tower garden installation at selected households were ...
متن کاملSustainability trade-offs in the planning and design of cluster scale greywater reuse systems
It is becoming increasingly accepted that the conventional approach to urban water resources management (WRM) is unsustainable and that securing urban water supplies for both anthropogenic and environmental uses requires a different approach. Water sensitive urban design (WSUD) is a holistic approach that seeks to integrate the management of the potable water, stormwater and wastewater cycles t...
متن کاملOn-site greywater treatment and reuse in multi-storey buildings.
The paper presents a study of a pilot plant treating light greywater for seven flats. The pilot plant combines biological treatment (RBC) with physicochemical treatment (sand filtration and disinfection). The pilot plant produced effluent of excellent quality, meeting the urban reuse quality regulations, and was very efficient in TSS turbidity and BOD removal: 82%, 98% and 96%, respectively. CO...
متن کامل