Klebsiella and method for preparing microbial flocculant by using same

The invention discloses Klebsiella and a method for preparing a microbial flocculant by using the same. The strain is (Klebsiella sp.) LDX1-1 and is preserved at the Center of General Microbiology of China Committee for Culture Collection of Microorganisms on September 7, 2015, and the preservation number is CGMCC No. 11330. The strain can be used for preparing the microbial flocculant by adopting an activating fermentation method. The strain has the advantages of high strain growth speed, good metabolic ability, short fermentation period, high yield, high flocculating rate and the like. The prepared microbial flocculant is applied to domestic sewage treatment and has wide development prospect and very high application value, the SS flocculating rate is 90% or above, the COD removal rate is 85% or above, the heavy metal Mn2 + removal rate is 85% or above, and the like.