Daily Archives: December 22, 2013

USEPA avoiding accountability, ignoring science, again

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Meet Senator Mark Udall (D-Colo), the “let’s restore trust” hippocrite

Colorado Senator Mark Udall says the National Security Agency (NSA) has over-reached and now it’s time to “rebuild American’s trust.” (click here)

Yet he has not protested against homosexual extremists and has said nothing about the over-reach of homosexual advocates and Colorado Democrats in setting up Colorado baker Jack Phillips to be found guilty for simply living out his Christian convictions preparing and selling baked goods. (click here)

Senator Udall and Democrats like him are simply hippocrites. Time for Udall to be replaced. 

Soluble microbial products as precursors of disinfection byproducts

Liu JL, Li XY, Xie YF, Tang H. Characterization of soluble microbial products as precursors of disinfection byproducts in drinking water supply. Sci Total Environ. 2013 Dec 13;472C:818-824. doi: 10.1016/j.scitotenv.2013.11.139.

Water pollution by wastewater discharge can cause the problem of disinfection byproducts (DBPs) in drinking water supply. In this study, DBP formation characteristics of soluble microbial products (SMPs) as the main products of wastewater organic biodegradation were investigated. The results show that SMPs can act as DBP precursors in simulated wastewater biodegradation process. Under the experimental conditions, stabilized SMPs had DBPFP (DBP formation potential) yield of around 5.6 μmolmmol-1-DOC (dissolved organic carbon) and DBP speciation profile different from that of the conventional precursor, natural organic matter (NOM). SMPs contained polysaccharides, proteins, and humic-like substances, and the latter two groups can act as reactive DBP precursors. SMP fraction with molecular weight of < 1 kDa accounted for 85% of the organic carbon and 65% of the DBP formation. As small SMP molecules are more difficult to remove by conventional water treatment processes, more efforts are needed to control wastewater-derived DBP problem in water resource management.

Click here for full paper (fee).