污泥碱解发酵液用于生活污水脱氮 除磷的效果研究

为了减轻水体富营养化程度，提高污水的脱氮除磷效果，并解决污泥减量化和资源化问题，本研究将碱预处理的污泥进行厌氧发酵产酸，并将发酵液作为污水脱氮除磷的外加碳源。研究结果表明：投加污泥发酵液后，出水氨氮浓度为0.3~0.5 mg/L，总磷浓度为0.5 mg/L，与未投加污泥发酵液相比分别降低了1.7~2.3 mg/L和3~4 mg/L。

Study on applied effect of sewage sludge alkaline hydrolysis fermentation broth for nitrogen and phosphorus removal of domestic sewage

In order to alleviate eutrophication of water body，improve the effect of nitrogen and phosphorus removal of sewage and solve the problems from the sludge minimization and resourization，the anaerobic fermentation is made on alkaline-pretreated sludge，and then takes the fermentation broth as an external carbon source for the nitrogen and phosphorus removal of sewage.The study result shows that the concentration of ammonia nitrogen and total phosphorus of the water outlet are 0.3~ 0.5 mg/L and 0.5 mg/L respectively after adding the fermentation broth，which are decreased by 1.7~2.3 mg/L and 3~4 mg/L，if compared with that without adding the fermentation broth.