TY  - SER
AU  - Hassan,Mahmoud
AU  - EI Awady, Mohamed Nabil
AU  - Bahiry, Zaineb Mahmoud 
AU  - EI-Bagory, Khaled Faran
TI  - Reuse of gray water for landscape culture
KW  - Graywater (Domestic wastewater)
KW  - Recycling
KW  - Irrigation water
KW  - Quality
KW  - Landscapes
KW  - Irrigation
N1  - Year book of Misr Society of Agricultural Engineering : The 20 th. Annual Conference of the Misr Society of Agricultural Engineering "Agricultural Engineering and Country Challenges"; Includes references
N2  - A lab scale system of rotating biological contactor (RBC) was used for
 treating gray water, in the present study, to be used in landscape culture.
 The system was modified with a provision to vary the speed (rpm) of
 rotating discs. hydraulic retention time (HRT) and discs suiface area. The
 reactor had four different rotating speeds 2, 3. 4 and 5 rpm. Six different
 hydraulic retention times 15, 30, 45, 60, 75, 90 min, and three different
 2disc suiface area 48 xI01, 64 xlrJ and80 xlrJ cm , Among those different
 factors in treating gray water, it was found that the rotational speed of 4
 rpm yields better percent removal of COD at 72.5%. Hydraulic retention
 time 90 min yielded better percent removal of COD at 74.28%. Disc
 suiface areas of 80xlr J cm 2 yielded better percent removal of COD at
 76.47%. After achieving the optimum condition, a glass hollse experiment
 was set up to examine the effects ofgray water irrigation on the growth of
 Epiprenl/ llinJ {ll/relin J and Syngollium podophyllum plants, and some
 soil properties. The experiment treatments included in the study were:
 irrigation with treated gray water, irrigation with potable water, and
 irrigation with raw gray water. Results showed that gray water irrigation
 had no significant effect on stem length, number ofleaves and leaf suiface
 area
UR  - http://nile.enal.sci.eg/EALE/2012/MJAE//012/20/397.pdf
ER  -