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Indexed by:Journal Papers

Date of Publication:2015-05-01

Journal:ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY

Included Journals:SCIE、PubMed、Scopus

Volume:115

Page Number:217-222

ISSN No.:0147-6513

Key Words:Acute toxicity; Bio-toxicity; Daphnia; Phenol removal; Toxicity removal; Toxicity unit (TU)

Abstract:We conducted a battery of toxicity tests using photo bacterium, algae, crustacean and fish to evaluate acute toxicity profile of coking wastewater, and to evaluate the performance of a novel wastewater treatment process, vertical tubular biological reactor (VTBR), in the removal of toxicity and certain chemical pollutants. A laboratory scale VTBR system was set up to treat industrial coking wastewater, and investigated both chemicals removal efficiency and acute bio-toxicity to aquatic organisms. The results showed that chemical oxygen demand (COD) and phenol reductions by VTBR were approximately 93% and 100%, respectively. VTBR also reduced the acute toxicity of coking wastewater significantly: Toxicity Unit (TU) decreased from 21.2 to 0.4 for Photobacterium phosphoreum, from 9.5 to 0.6 for Isochrysis galbana, from 31.9 to 1.3 for Daphnia magna, and from 30.0 to nearly 0 for Danio rerio. VTBR is an efficient treatment method for the removal of chemical pollutants and acute bio-toxicity from coking wastewater. (C) 2015 Elsevier Inc. All rights reserved.