Biotreatment of Petrochemical Wastewater: A Case Study from Northern Tunisia.
A full-scale study has been conducted to assess the bioaugmentation efficiency of trickling filter process to treat petrochemical wastewater from a lubricant industry recycling waste oils. During 45 weeks, the organic loading rate (OLR) in the trickling filter was increased stepwise from 0.9 to 4 kg of chemical oxygen demand (COD)/(m3·day) at the end of the upgrading period as the flow rate (FR) reached the value of 30 m3/day. The removal, obtained in terms of percentage, for COD ranged from 60 to 84.5 and greater than 98 for total n-alkane (TNA), while those of total kjeldahl nitrogen (TKN) and total phosphor (TP) were about 32 and 55, respectively. The analytical profile index (API) of trickling biofilm has confirmed that 5 strains are closely related to Acinobacter junii, Stenotrophomonas maltophilia, Vibrio vulnificus, Vibrio metschnikovi, Pseudomona slulzeri and Trichosporon spp2.
Meryem
M
Jemli
Hatem
H
Zaghden
Fatma
F
Rezgi
Sonia
S
Kchaou
Fathi
F
Aloui
Sami
S
Sayadi
D018533:Biomass; D019149:Bioreactors / Q000382:microbiology*; D059392:Petroleum Pollution / Q000517:prevention & control*; D014416:Tunisia; D018508:Water Purification / Q000379:methods*