日本水処理生物学会誌
Online ISSN : 1881-0438
Print ISSN : 0910-6758
ISSN-L : 0910-6758
23 巻, 2 号
選択された号の論文の8件中1~8を表示しています
  • 平石 明, 佐伯 和昭, 堀江 進
    1987 年 23 巻 2 号 p. 1-6
    発行日: 1987/12/15
    公開日: 2010/02/26
    ジャーナル フリー
    東京湾沿岸の汚染海水を対象とした大腸菌群の分布調査を行い, 次の結果を得た。
    1. TCおよびFCは102~104CFU/100mlの範囲で検出された。
    2. TC, FC, およびCODの3者の間には高い正の相関関係が認められたが, FC/TC比とCODの間には負の相関関係がみられた。
    3. 大腸菌群 (TC) の優占菌種としてE. coliおよびK. pneumoniaeが検出され, 両者を合わせるとフローラ全体の80%以上を占めた。
    4. 山岳地域に優先するR. aquatilis, S. fonticolaなどの低温性菌種はほとんど分離されなかった。
  • 稲森 悠平, 大内山 高広, 杉浦 則夫, 須藤 隆一
    1987 年 23 巻 2 号 p. 7-14
    発行日: 1987/12/15
    公開日: 2010/02/26
    ジャーナル フリー
    Seasonal changes of periphytic smaller animals in Lake Kasumigaura, which has been hypertrophic, were investigated during the period of 1983 to 1984.
    Species numbers of protozoa and metazoa in the total organisms attached on the biofilm-sheet were 156 and 28, respectively. The organisms were mainly divided into three types which were sessile, stoloniferous and free-swimming. Numbers of sessile type organisms decreased sharply in summer season, while stoloniferous type organisms increased in the season. It was suggested that the water of Lake Kasumigaura was α-mesosaprobic in summer and β-mesosaprobic in winter judging from saprobic system.
  • 稲森 悠平, 国安 祐子, 須藤 隆一
    1987 年 23 巻 2 号 p. 15-23
    発行日: 1987/12/15
    公開日: 2010/02/26
    ジャーナル フリー
    Smaller metazoa appearing in biological treatment process are divided into two types. One is filter feeder such as Rotatoria and another is detritus feeder such as Oilgochaeta. To make clear the role of smaller metazoa in water purification, Philodina erythrophthalma and Aelosoma hemprichi were used as Rotatoria and Oligochaeta individually in this experiment. Smaller metazoa were cultivated under static and dark conditions in LE (Lettuce and egg yolk extract) medium containing several bacteria. The run of experiment consisted of only bacteria (B), bacteria+A. hemprichi (BA), bacteria+P. erythrophthalma (BP), and bacteria+A. hemprichi+P. erythrophthalma (BPA) . Purification efficiency was estimated by TOC, viable count and suspended solid in cultivation medium. The results obtained from this experiment were as follows.
    (1) In the B system, the turbidity is high and the efficiency of organic matter removal is low because of existence of the large amount of dispersed bacteria.
    (2) In the BA system, the amount of biomass decreases because the detritus feeder such as A. hemprichi feeds on the detritus, but the turbidity is still high and the efficiency of organic mater removal is not so high because of the presence of dispersed bacteria.
    (3) In the BP system, the biomass and turbidity decrease and the efficiency of organic matter removal increases, since the filter feeder such as P. erythrophthalma feeds on the dispersed bacteria.
    (4) And in the BPA system, the amount of biomass decreases most remarkably along with the turbidity reduction and improved efficiency of organic matter removal, because the coexistence of A. hemprichi and P. erythrophthalma whose feeding mechanisms and food habits differ from each other, promotes their predatory activities on the dispersed and flocculated bacteria.
    It can be concluded that the detritus and filter feeder smaller metazoa in bio-film are contributing greatly to water purification and reducion of biomass.
  • 猪口 眞美, 福島 博
    1987 年 23 巻 2 号 p. 24-29
    発行日: 1987/12/15
    公開日: 2010/12/09
    ジャーナル フリー
  • 猪口 眞美, 福島 博
    1987 年 23 巻 2 号 p. 30-34
    発行日: 1987/12/15
    公開日: 2010/12/09
    ジャーナル フリー
  • 綿貫 知彦
    1987 年 23 巻 2 号 p. 35-38
    発行日: 1987/12/15
    公開日: 2010/02/26
    ジャーナル フリー
    Two taxa diatoms, Achnanthes affinis v. affinis and A.microcephala were isolated from the samples collected from elevated water tanks of buildings, in Kanagawa Prefecture. The growth characteristics of two diatoms were studied in several experimental conditions. The results clearly domonstrate that the growth of the diatoms required alkaline medium for optimal growth. The optimal growth of the diatoms were obtained t 20°C, pH8.0 with growth rate μ=1.0-1.1, doubling time=14.2-14.8 hours and number of generation=2.84-3.00. The maximum phtosynthesis of the diatoms were obtained at 30°C with 4.1 (O2 mg/mg chl. a/h) .
  • 小林 艶子, 福島 博, 大塚 晴江
    1987 年 23 巻 2 号 p. 39-42
    発行日: 1987/12/15
    公開日: 2010/02/26
    ジャーナル フリー
    1) チェコスロバキア, プラハのブルタバ川で得た228個体を研究に用いた。
    2) ケイ殻の外形は卵状楔型 (70.3%) , 長卵状楔型 (26.9%) , var. gautieri型 (2.8%) に区別可能であるが, 中間型が多い。このことからvar. gautieriは基本種のシノニムにすべきと考えられる。
    3) 3.3%の個体はケイ殻の上半部にさし込み横条線がある。この場合中央横条線の長い側である。3.3%の個体は下半部に出現するが, この場合, 中央横条線の短かい側である。
    4) 中央横条線の長い方に1ヶの遊離点が生じる (54.7%) が, 2ヶの場合 (36.8%) , 3ヶの場合 (8.5%) もある。短かい方には遊離点がないことが多い (90.1%) が, 1ヶの場合 (9.0%) , 2ヶの場合 (0.9%) もある。
    5) Skvortzow (1937) はvar. okamuraeを遊離点の数で特徴づけているが, 遊離点の数は上のように変異性が大きいので, この形質を重要視するのは問題が多い。
  • 小林 艶子, 福島 博, 大塚 晴江
    1987 年 23 巻 2 号 p. 43-49
    発行日: 1987/12/15
    公開日: 2010/02/26
    ジャーナル フリー
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