NOVELTY - Enterobacter hormaechei strain CL.2013 is preserved in China General Microbiological Culture Collection Center (CGMCC No. 10451), and is new.    USE - Enterobacter hormaechei strain CL.2013 used in hexavalent chromium ions removing agent for treating hexavalent chromium ions contaminated soil or wastes (all claimed).    ADVANTAGE - The Enterobacter hormaechei strain CL.2013 is simple, cost-effective, eco-friendly and easy to use, and has broad market prospects.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing hexavalent chromium ions removing agent, which involves:    (A) preparing activation medium by adding glucose 1g/L in Luria Bertani medium, and sterilizing for 15-30 minutes and kept;    (B) inoculating Enterobacter hormaechei strain CL.2013 in activation medium at 28-35 degrees C at 120-180 rotations per minute under shaking for 12-16 hours to obtain activated culture;    (C) Preparing liquid seed medium, and adjusting pH of the liquid seed medium to 6.5-7.5 with aqueous sodium hydroxide;    (D) sterilizing liquid seed medium at 115-121 degrees C for 15-30 minutes;    (E) inoculating obtained activated culture (8-10%) in liquid seed medium at 30-37 degrees C at 120-200 rotations per minute under shaking for 24-48 hours to obtain liquid seed culture;    (F) inoculating obtained liquid seed culture (2-15%) in fermentation medium at 25-35?OC for 12-48 hours to obtain concentration of 108 colony forming unit/ml to obtain fermented broth;    (G) preparing activated coal by crushing dried marigold flower extract residue to 20-100 meshes in tube reactor;    (H) heating the crushed mixture in furnace at 300-600 degrees C for 20-30 minutes with nitrogen purging at 250cm3/minute rate, where heating rate is 5 degrees C/minute;    (I) maintaining heating conditions for 3-6 hours;    (J) cooling the obtained mixture at room temperature to obtain activated coal;    (K) mixing activated coal with fermented broth uniformly; and    (L) drying the obtained mixture to obtain moisture content of 30% to obtain hexavalent chromium ions removing agent.