The Faculty of Engineering at the University of Kerbala has discussed the M.A. thesis entitled” Design and Evaluation of a New Experimental Filter for Graywater Reuse ”.
The thesis presented by student Batoul Hassan Ibrahim, aims at using gray water from home and restaurant environments for agricultural purposes after treating it in simple and economical ways.
The thesis deals with ways of reducing the use of agricultural fertilizers and reduce pressure on the sewage network as part of the secondary economic goals.
The thesis indicates the importance of treating gray water using a standard sand and gravel filter system in addition to the use of other materials to increase the effectiveness of the treatment. The primary treatment included the use of charcoal, activated cardboard, bentonite, pomegranate peel and rhyolite, as each material was used separately within sand filter layers and at specific concentrations.
It concludes that the rate of removal efficiency of treated additives is as follows: charcoal 41%, active cardboard 42%, pomegranate peel 37%, bentonite 51% and riolite 56%. According to the removal efficiency percentages, the two substances bentonite and riolite (the highest removal efficiency) have been selected in the final treatment and by changing the concentrations of each substance in order to know the extent of its impact on the properties of gray water and for the purpose of using the thermos that provide treated water that matches the specifications of irrigation water. Chlorine has been used in the disinfection phase, where the properties of the gray water after the final treatment and the disinfection phase are compatible with the irrigation water specifications based on the Jordanian specifications and audited by the Canadian index.