In order to research the performance and excavate the organic carbon and energy source of the slaking fermentation sludge,the second fermentation of slaking fermentative sludge was made by adding the NaCl and NaOH into the fermentation sludge.Through adding 0,5,15,20 g/L NaCl,the effect of different salinity on the fermentation performance,the extracting situation of carbon source and dewatering performance of slaking fermentation sludge were investigated,respectively.The results showed that 5,15 and 20 g/L NaCl tests could promote the protein release and produce the volatile fatty acids,the maximum hydrolysis rate was 36%,acidification rate was 34%,ammonification was 40%.In the late fermentation,5g/L NaCl test accelerated the protein and volatile fatty acids.The results also showed that NH4+-N concentration increased and PO43--P decreased with the salnity rise.5 g/L NaCl test could improve the fermentation sludge dehydration property,but 15 and 20 g/L NaCl test deteriorated the fermentation sludge dehydration property.
