NOVELTY - A Penicillium CTGU-CGL-002 conserved in China center for type culture collection, with conversation number of CCTCC No: M209204 and conversation data of September 9, 2009, is new.    USE - The Penicillium CTGU-CGL-002 is useful for degrading glyphosate waste water (claimed) and purifying organic pollutant in domestic sewage.    ADVANTAGE - The engineering bacteria is at the optimal growth condition, and degrading rate to glyphosate waste water reaches up to 95.52%. It has higher mineralization degree, low cost of treatment device, simple operation and wide use.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is a screening method of Penicillium CTGU-CGL-002 comprising: (a) strain enriching: adding glyphosate waste water and enrichment culture medium whose volume is 3 times as much as that of the glyphosate waste water to a container, then adding mud aerated for standing for 24 hours, putting into a shaker, shaking to culture for three days at constant temperature of 30 degrees C; (b) strain acclimatization: adding the glyphosate waste water, strain liquid and inorganic salt culture medium under sterile condition, increasing the glyphosate waste water, then putting into the shaker to shake and culture at constant temperature of 30 degrees C, where a acclimatization cycle includes four days; acclimatizing for three cycles, after ending each acclimatization cycle, measuring chemical oxygen demand (COD) value of each bottle of culture liquid, then calculating the degrading rate, taking the culture liquid with the highest degrading rate of glyphosate waste water from parallel samples of each group as inoculation source for the next acclimatization; and (c) strain purifying: after acclimatization for three cycles, under sterile condition, coating the culture liquid with the highest wastewater degrading rate on the inorganic salt flat board containing the glyphosate waste water, volume ratio of the wastewater to the inorganic salt culture liquid being 3 to 2, culturing at constant temperature of 30 degrees C, selecting single colony, repeating marking, separating and purifying, then preparing the single colony.