摘要
本文讨论了硫酸盐、氨氮、碱度及水力负荷等因素对污泥颗粒化的影响情况。在处理制药废水容积为１５Ｌ的中温实验室ＵＡＤＢ反应器中形成了颗粒污泥。试验表明：通过逐步驯化接种污泥，适当增加进水碱度，运行初期采用脉冲进料提高瞬时水力负荷等措施，可使反应器承受较高浓度的硫酸盐、氨氨和氯化物，并有利于形成颗粒污泥。污泥颗粒化后，反应器处理制药废水的容积负荷可达１０～１５ｋｓＣＯＤ／ｍ￣３·ｄ，ＣＯＤ去除率为８０％～９０％，水力停留时间为６～８小时，进水ＣＯＤ／Ｓ０为３～５。
This paper discrides the effects of suphate,ammonia--N,alkalinity and hydraulicload on sludge granulation。The granular sludge is formed in the lab--UASB reactor treating oharmaceutical wastewater which has a valum of 15 liters under the mesophilic digestion。This experiment shows that the reactor can sustain higher concerations of,NH_3--N and Cl-(choride),form granular sludge by means of culturing sludge grandually,increasingalkalinity of the influent properly and rasing the instantaneotus hydraulic load during the early period of the operation。 After the granulation,the volumetric COD loading rate and theCOD removing rate reach 10～15kgCOD/m--3.d and 80%～90% respectively when the hydratilic retention time(HRT)is 6～8hours.The scop of is as low as 3～5。
关键词
颗粒污泥
废水处理
制药厂
UASB reactor
suphate
ammonia-nitrogen:granular sludge
toxicity inhibition
