TY  - JOUR
T1  - Role of Bacterial Additives for Biological Treatment of
Domestic Wastewater in Septic Tank
AU - Hemdan, Bahaa A. AU - Fouad, Hanan A. AU - Elhefny, Rehab M. AU - Kamel, Moataz M. 
JO  - Journal of Engineering and Applied Sciences
VL  - 12
IS  - 20
SP  - 5129
EP  - 5135
PY  - 2017
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2017.5129.5135
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2017.5129.5135
KW  - Domestic wastewater
KW  -septic tank
KW  -bacterial additives
KW  -coliform group
KW  -technology
KW  -treatment biologically
AB  - The main objective of this study was to evaluate the efficiency of bacterial additives for domestic
wastewater treatment biologically in septic tanks. This research was carried out on two stages. The first stage
use different doses of Biowash bacterial additives (100, 150, 200, 250 and 300 mg/L) in a bench scale system that
consists of five chambers septic tanks to obtain the optimum dose. On the second stage the effluent wastewater
treated with the optimum dose of Biowash bacterial additives would pass through four biofilters to improve the
effluent treated wastewater quality in order to reuse it. The physico-chemical and bacteriological parameters
for raw and treated effluent of DWW were analyzed. The obtained results revealed that the level of organic load
represented by COD and BOD removal were reduced up to 98.3 and 96.6% from. Moreover, the fecal coliform
count was reduced by about 5 log units. The quality of the treated wastewater was found to be within the
permissible Egyptian standards. Thus, septic tank system with bacterial additives is a better technology for
DWW treatment in small areas.
ER  -