The invention relates to an acid-resistance heterotrophic bacterium strain Z3 used for
bioleaching treatment of
sludge and
livestock and
poultry manure and belongs to the technical field of
environmental engineering. The
bacteria are cylindrical single-celled
bacteria, the arthrospore size of the
bacteria is 6<-12>mu m *3<-6>mu m, the
bacterial colony is diffused on a plane, the bacteria grow quickly, the bacteria are flat, high in center and
flock-like, the liquid culturing the bacteria is turbid, the precipitate is loose, the reproductive mode of the bacteria is fissiparism, and the formed arthrospores are single ones or connected into a chain. The bacteria can grow normally in an extremely acidic environment in which the pH value is 2.5, the most suitable pH is 2.5 to 6, and according to morphological and physiological biochemical characters and molecular biological
assay, the
bacterial strain belongs to
Galactomyces geotrichum and the collection number of the
bacterial strain is CGMCC No.4298. The strain in a pig
manure and urban
sludge bioleaching environment can quickly use
water soluble small molecular weight organic matters or simple organic acids as a
carbon source and anenergy source, so the
bioleaching efficiency is improved, the rate of removal of
heavy metals from the pig
manure and urban
sludge reaches over 90 percent, and the
dehydration rates for the pig
manure and urban sludge are 48 and 80 percent respectively.