【摘要】 在结构形式相同的生产性ＵＡＳＢ反应器中投入不同类型和不同数量的接种污泥，以啤酒废水为基质常温下进行培养颗粒污泥的试验。试验结果表明：在生产性ＵＡＳＢ反应器中用好氧活性污泥作为种泥也能培养出厌氧颗粒污泥。厌氧絮状污泥接种量为６．５ｋｇｇＳＳ／ｍ￣３左右时，对于迅速培养出颗粒污泥是合适的，大多或太少都会延迟颗粒化进程。在培养颗粒污泥的试验初期，重要的是保持较低的水力负荷（小于）３５ｍ￣３／ｍ￣２·ｈ）及大于１０００ｍｇＣａＣＯ＿３／Ｌ的进水碱度；而在后期，调整水力负荷达到０．６ｍ￣２／（ｍ￣２·ｈ）以上可以加快颗粒化速度，而进水碱度不低于７５０ｍｇＣａＣＯ＿３／Ｌ即可。微生物对惰性颗粒的附着及小颗粒之间的粘结是颗粒污泥形成过程中的关键因素。更多还原

【Abstract】 The granulation in full-scale UASB reactors to treat brewery wastewater at ambient temperaturewas described in this paper. Two types of sludges(anaerobic digesied sludge,aerbic activated sludge)and various quantitywere selected to inoculate the reactors to investigate the optimum conditions for developing anaerobic granules. Anaerobicgranular sludge was cultivated after 8 months in a reacror where aerobic activated sludge was used as inoculum, but the rateof granulation was much slower than that of digested sludge as inoculum. One of key techniques of cuItlvating granularsludge rapidly was to provide approptiate amount of inoc.ulatedxludge, which was about 6. 5 kgVSS /m3 in this experiment.Too much Or too little seed sludge will delay the granulation process. During the initial poriod of this experiment, it was veVimportant to operate with a lower hydraulic loading rate(<0. 35m3 /m2· h) and to prov1de alkalinity of mote than 1000mgcaCO3/L in influent.Othereise,at later peried, ralsing hydraulic loading rate to 0. 6m3/m2·h, reducing inert particlesof feed material and rotaining feed alkalinity of not less than 750 mgCaCo3/L could accelerate the granulation,It wa,alsoobserved that microorganisms adbering to inert particles and small granules stlcking to each other may be main factors of granule formation.更多还原