Combined pollutants with polycyclic aromatic hydrocarbons (PAHs) and heavy metals have been identified as toxic and unmanageable contaminates. In this work, Pseudomonas gessardii strain LZ-E isolated from wastewater discharge site of a petrochemical company degrades naphthalene and reduces Cr(VI) simultaneously. 95% of 10 mg L (1) Cr(VI) was reduced to Cr(III) while 77% of 800 mg L (1) naphthalene was degraded when strain LZ-E was incubated in BH medium for 48 h. Furthermore, naphthalene promotes Cr(VI) reduction in strain LZ-E as catechol and phthalic acid produced in naphthalene degradation are able to reduce Cr(VI) abiotically. An aerated bioreactor system was setup to test strain LZ-E's remediation ability. Strain LZ-E continuously remediated naphthalene and Cr(VI) at rates of 15 mg L 1 h 1 and 0.20 mg L (1) h (1) of 800 mg L (1) naphthalene and 10 mg L (1) Cr(VI) addition with eight batches in 16 days. In summary, strain LZ-E is a potential applicant for combined pollution remediation. (C) 2016 The Authors. Published by Elsevier Ltd. This is an open access article under the CC-BY-NC-ND license (http://creativecommons.orgilicensesiby-nc-nd/4.0/).