Degradation technology of bio based crude oil
	       Oily sludge + microbial degradation bacteria + remediation and improvement + oil reduction
	       After treatment, the oil content of soil gradually decreased until it could not be detected, and the soil micro-ecosystem was constructed 
	       In the field test of BANGDA(company name) for three periods, good results were obtained, and a series of degradation bacteria of BR and POL were selected;Suitable for pollution control of low oil sludge and crude oil field