Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : gray water

Design a Gray Water Treatment System for a Virtual Building Working by Solar Energy

Kheria M. Essa; Hashim A. Mahdi; Mohammed H. Mohammed

Engineering and Technology Journal, 2018, Volume 36, Issue 1C, Pages 79-85
DOI: 10.30684/etj.36.1C.12

This work has showed that gray water can be used in irrigation with great success. It includes the explanation of how water recycling will save water for irrigation and agriculture use, reduce the costs of constructing purification plants, and add natural filters to the environment. It also aspires to invite companies to reduce the proportion of phosphate and other harmful substances in the composition of soap. In addition, it is possible to reduce the amount of suspended solids in a gray water by installing filters on the washing machines themselves, so that the volume of problems in the plankton is reduced at the refineries. It was found that the decrease in the consumption and rationalization of electric energy was observed for other purposes using the solar cell system, which is considered as a source of power supply system.

The Treatment of Grey Water by Aeration

Roa; a Mudhafar Younus

Engineering and Technology Journal, 2014, Volume 32, Issue 5, Pages 1171-1179

The present study included the use of the aeration system in the treatment of gray water. Samples were collected from three selected houses in Mosul city in 2010 for the months (March, June, September and December). Some properties of grey water have been measured including pH, EC, TSS, DO, COD, NO3 and PO4. The aeration process has been carried out for the gray water for a detention time of two days in order to find out the best time for the treatment.
The results indicated a large decrease in COD 55, 76 mg/l after 23 hrs of aeration in March and June, and 51 and 62 mg/l after 25 hrs of aeration in September and December respectively. The remaining properties were examined at the end of the aeration process (at 48 hrs) which were within the FAO recommendation range for using the treated gray water for agricultural purposes.