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我们对球形芽孢杆菌(Bacillus sphaericus简称B.s.)在不同水质中的生存时间、菌数动态变化及持效期,进行了实验观察: B.s—10菌种 由山东省防疫站提供;培养基为5％花生饼浸液;用国产THZ—82型台式恒温振荡器,转速180转/分,28℃,振荡培养40～44小时。 试验水体 分清水和污水两组。清水系脱氯的自来水,测定pH值7.2,细菌总数380个/毫升;污水系农村猪圈积肥坑污水,pH值8.2,细菌总数610亿/毫升,氨氮量800毫克/升,耗氧量为371.6毫克/升,将两种水体分别盛在瓷缸(60×30×70cm~3)中,每缸盛水50公
We conducted an experimental observation on the survival time, the number of bacteria and the persistence period of Bacillus sphaericus (Bs) in different water quality: the strain Bs-10 was provided by Shandong Epidemic Prevention Station; the culture medium was 5% Peanut cake immersion liquid; using domestic THZ-82 desktop thermostatic oscillator, speed of 180 rev / min, 28 ° C, shaking for 40 to 44 hours. Test water is divided into two groups of water and sewage. Water dechlorinated tap water, the determination of pH 7.2, the total number of bacteria 380 / ml; sewage rural pig styptic sewage, pH 8.2, the total number of bacteria 6100000000 / ml, ammonia nitrogen 800 mg / l, oxygen consumption 371.6 mg / l, the two kinds of water were Sheng Sheng porcelain (60 × 30 × 70cm ~ 3), each cylinder of water 50