摘要
利用人工配制的生活污水先进行单胞藻（斜生栅藻 Ｓｃｅｎｅｄｅｓｍｕｓ ｏｂｌｉｑｕｕｓＴｕｒｐ）的 培养，再接种田螺（Ｃｉｐａｎｇｏｐａｌｕｄｉｎａ ｓｐ）和短钝溞（Ｄａｐｈｎｉａ ｏｂｔｕｓａ Ｋｕｒｚ），对栅藻密度的经时变化， 短钝溞种群增长及水体中氮、磷、碳在培养过程中的变化作了测定与分析结果如下：（１）田螺组和 对照组中栅藻密度（Ｎ）经时变化的函数为：田螺组Ｎ＝ｅ（１．１１３６）ｔ（１．７２０４）；对照组Ｎ＝ｅ（１．４１７５）ｔ（１．８０９９）；（２）田 螺组短钝溞在静态条件下的种群增长模型为： Ｎ＝ ０． ７５ｅ（０．４７６）ｔ，（３）以短钝溞问收方式收获量的累加 值作为种群增长量（产出量），其数学模型为：Ｎ＝ｅ（０．２８３７）ｔ（２．５５３７）；（４）经栅藻、田螺、短钝溞培养后，生 活污水的氮、磷、碳含量分别下降了 ８０、 ６０％， ７２． ４０％， ４５． ７０％． 本研究既为枝角类集约化培养提供了某些生态学理论参数，也为污水调控及资源化提出一个
Using artifical sewage to culture the single-celled agela (Scenedemus obliquus Turp) until the biological abandance up to 1. 7 × 10_4 individual' mL^l-, the river snail (Cipangopaludina sp. ) and water fleas (Daphnia obtusa Kurz) were inoculated into the sewage. The population dynamics of the algae and water fleas were described. The results were summarized as follows. (1 )The changes of the alga density by times were shown to be exponential function. (2) In the still culture stage without harvest, the population growth curve of Daphnia obtusa Kurz was shown as: InN = - 0. 06410 + 0. 4404t; (3)During the stage of interval harvest, the equation of accummu- lated yield was shown to be diplo-logarithmic function: 1nN = 0. 2836 + 2. 5537 1nt. (4)The compositions of nitrogen, phosphorus, carbon of the sewage were analized as the feedback culture decreased 80. 60 %, 72. 40 % and 45. 70 %, respectively.
出处
《湖泊科学》
EI
CAS
CSCD
1999年第4期328-332,共5页
Journal of Lake Sciences
基金
国家"九五"攻关项目!96-008-04-02
南京大学分析中心测试基金
关键词
生活污水
栅藻
短钝蚤
反馈养殖
藻-螺-蚤
Daphnia obtusa Kurz
Scenedemus obliquus Turp
feedback culture
purfication of sewage
