摘要
通过对某污水处理厂运行参数的现场调查和模拟试验分析,得出该污水厂污泥膨胀的主要原因是由于原水营养成分不平衡造成的,通过添加营养元素解决了污泥膨胀问题。另外还发现,污泥负荷、pH值和DO的变化都会对该污水厂污泥膨胀产生影响。当维持曝气池中溶解氧为1.5 mg/L时,污泥处于微膨胀状态,该污水厂可以节省19.4%的供气量。
Through simulation experiment and scene investigation of the operation parameters of a sewage treatment plant, it was found that the main cause of sludge bulking was the imbalance of the raw water nutrients, and adding nutrient elements could solve the problem of sludge bulking. The changes in sludge loading, pH value and DO would have an effect on sludge bulking. When the dissolved oxygen in the aeration tank was 1.5 mg/L, the sludge was in a state of micro-bulking. As a result, the sewage treatment plant could save 19.4% of air supply volume.
出处
《中国给水排水》
CAS
CSCD
北大核心
2015年第15期69-71,76,共4页
China Water & Wastewater
基金
国家自然科学基金资助项目(51208068)
关键词
污泥膨胀
污泥负荷
溶解氧
丝状菌
SVI
sludge bulking
sludge loading
dissolved oxygen
filamentous bacteria
SVI
