dry basis
4.The mutant FV-4 obtained through ultraviolet mutagenesis was cultivated at 33℃ for 5 d in the medium containing bran and cob at the ratio of 5:5, as well as 1% pectin solution. The result showed that the activity of peptinase and cellulase reached 3750 U/g (dry basis) and 1800 U/g (dry basis), respectively.
6.The results showed that for the sludge treated with composite flocculants PAM-PAFC(1∶1) firstly,then treaded with ultrasound at 20kHz,400W/m2 for 2.5 min,the sludge volume could be reduced by 86%,sludge water content was decreased to 79% and sludge water content(dry basis) was 7% lower than that without ultrasound treatment.
7.Abstract: Sewage sludge briquette made of 2%(dry basis) sewage sludge,0.3%white earth, and coal powder was studied under conditions of briquette similar to modeling and gasificaition for briquette on ammonia synthesis.Briguette with white earth was taken as a reference.The results showed that rate of gasification of sewage sludge briquette was 50%higher than that of briquette of white earth at 1100℃.Ash melting point of sewage sludge briquette reached 1440℃ which satisfied the requirement of gasification of ammonia synthesis.Results showed that no pollution took place in these processes,and the gas generated can meet the demand of ammonia synthesis.

