[VOCs and Odors Control and Development in Pharmaceutical Fermentation Industry].

Volatile organic compounds (VOCs) and odors, which pose potential hazards to human health and the ecosystem, are two of the most important pollutants emitted from the pharmaceutical fermentation industry. Currently, basic research on the characteristics of the pollution and effective prevention technology for VOCs and odors emitted from the pharmaceutical fermentation industry are limited. Specifically, the pharmaceutical fermentation industry lacks adequate theoretical guidance on the supervision and control of VOCs and odors, and some companies even face relocations.

[Effects of Interaction of Ozonation and Coagulation on Coagulation Results].

Two strategies, ozonation-coagulation combination (OCC, ozone and coagulant dosed at meantime) and preozonation coagulation (PC, coagulant dosed after ozone died away) were used to treat synthesized water. Different effects of oxidation and coagulation, disinfection by-products formation potentials (DBPFP) in the same water were detected in order to study the influence of interaction of ozonation and coagulation (IOC) on treated water characteristics. Results show that there are remarkable differences between OCC and PC.

[Removal of fluorescent whitening agent by hydrogen peroxide oxidation catalyzed by activated carbon].

Degradation of fluorescent whitening agent VBL in the processes of activated carbon (AC) and activated carbon modified (ACM) adsorptions, hydrogen peroxide (H2O2) oxidation, and hydrogen peroxide oxidation catalyzed by activated carbon were studied. Mechanism of the above catalytic oxidation was also investigated by adding tert-Butyl alcohol (TBA), the free radical scavenger, and detecting the released gases. The results showed that: the activated carbon modified by Fe (NO3)3 (ACM)exhibited better adsorption removal than AC.

[Effects and mechanism of catalytic decomposition of ozone by activated carbon].

Effects and mechanism of catalytic decomposition of ozone by activated carbon (AC) were studied by detection of residual components in released gas and temperature of reactor pole, and heat analysis through the ozone decomposition pole (ODP). Results showed that ozone could be thoroughly decomposed (removal rate was maintaining 100% all along the process studied) for 5 h under the condition of O3 12.89 mg x min(-1), 18 mm diameter glass tube was stuffed by activated carbon (made from coal, 2.

[Study on removal of surfactant by activated carbon catalytic ozonation].

The anionic surfactant sodium dodecyl benzene sulfonate (SDBS) is employed as the target pollutant; the SDBS degradation in the processes of ozone (O3), activated carbon (AC) and activated carbon catalytic ozonation were studied. The impact of natural organic matter (NOMs) on the degradation of SDBS by catalytic ozonation was also investigated. Results show that: SDBS removal by using activated carbon catalytic ozonation is higher than that of using single ozonation or AC adsorption respectively; and the most effective time is the early 20 min when the concentrations of ozone and SDBS are relatively high.

[Effects of polymer aluminum hydrolysis on phosphorus distribution in coagulation].

Coagulation treatment was conducted by using coagulants of different basicity (ratio of OH(-)/Al); contents,distributions and algal availability of phosphorus in water were studied before and after coagulation. Results show that: phosphorus removals and its distribution in water were markedly different according to the coagulant with different basicity used; Al(a) plays an important role in the coagulation experiment for P removal. The lower the coagulant basicity was, the higher phosphorus removal was achieved; and PACl0 showed the best performance.