Comparative transmembrane transports of four typical lipophilic organic chemicals.

Transmembrane transports of four kinds of lipophilic organic chemicals (LOCs) on suspending multilamellar liposomes (SML) and Escherichia coli (E. coli) were investigated, where both anthracene and phenanthrene were accorded to the lipid-water partition law and Sudan I and III to the Langmuir isothermal adsorption. Less than half of phenanthrene is transported into E.

[Analysis of microbial community in a deodorization biofilter by PCR-sSCP method].

Microbial community of biofilm in a biofiltration was investigated using PCR-SSCP (single strand conformation polymorphism) technique in this paper. The results indicated the removal rate of odor pollutants improved with the acclimation, from 50% to 89%, and the microbial diversity of biofilter decreased at the first month and then increased (diversity index H from 1.6-1.

[Experimental study on the processes and mechanism of enhanced denitrification by addition zeolite in wastewater treatment].

Aim to enhance nitrogen removal from wastewater, addition zeolite to aeration tank was preformed. The result showed that addition of zeolite could improve the nitrification/denitrification efficiencies by comparing two phase experiment of 25 mg/L with blank and 25 mg/L with 50 mg/L, and the population of nitrifying bacteria in activated sludge increased obviously. When 25 mg/L zeolite was added into aeration tank, NH4(+) -N and TN removal increased 10% - 13% and 13% respectively, endogenous respiration rate of nitrification increased about 138%, and the population of nitrification bacteria increased about 2.