STUDY ON MAXIMUM SPECIFIC SLUDGE ACTIVITY OF DIFFERENT ANAEROBIC GRANULAR SLUDGE BY BATCH TESTS

The maximum specific sludge activity of granular sludge from large scale UASB, IC and Biobed anaerobic reactors were investigated by batch tests. The limitation factors related to maximum specific sludge activity (diffusion, substrate sort, substrate concentration and granular size) were studied. The general principle and procedure for the precise measurement of maximum specific sludge activity were suggested. The potential capacity of loading rate of the IC and Biobed anaerobic reactors were analyzed and compared by use of the batch tests results.

坏死性胰腺炎的抗生素应用

对急性坏死性胰腺炎应用抗生素的价值迄今尚缺乏对照性研究,对坏死感染病例无疑应应用抗菌治疗,对缺乏坏死细菌感染证据的病例是否要补充应用抗生素治疗则存有争议。 细菌感染对坏死性胰腺炎的临床经过有决定性作用。在坏死性胰腺炎病程的第1周即已证实坏死伴有细菌感染的发生。

泰国和南朝鲜10000t/d熟料篦冷机的操作经验

不久以前,克劳迪斯·彼德斯股份公司(Clau—dius Peters AG)设计的世界上最大的篦冷机投入了试运转。其中两台分别属于泰国SCCC公司(Siam City Cement Co.)的Tabkwang水泥厂和SCC公司(Siam Cement Co.)的Khan Wong水泥厂,设计生产能力为10000t/d;还有一台属于南朝鲜Ssang Yong水泥工业公司(Ssang Yong Cemet Ind.)的Dong Hae水泥厂,生产能力为8500 t/d。在建造这类大型篦冷机之前,对新一代冷却机作了开发。下面就介绍这类大型冷却机的开发情况和初步操作经验。

软粘土上灌注群桩的大型脉冲荷载试验

大型试验表明,建造在从软到硬的粘性盆地沉积物中混凝土灌注桩的承载力,可用设置在桩底的压实砾石垫层来得到显著的提高。桩除受静力荷载外,还作用持续时间△t=20秒的脉冲荷载,如同从动力载荷试验中所知道的那样,已经证实,桩的刚度显著地大干静力荷载作用下的风度。