巻号一覧
28 巻 (1992)
- 2 号 p. 1-
- 1 号 p. 1-
28 巻, 1 号
選択された号の論文の7件中1～7を表示しています
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梁 在〓, 大菅 健一, 平佐 興彦, 森 忠洋1992 年 28 巻 1 号 p. 1-6
発行日: 1992/06/30
公開日: 2010/02/26
ジャーナル フリーA new biological process for the removal of dissolved sulfide is proposed. The prccess is based on the oxidation of sulfide to elemental sulfur and sulfate by sulfur oxidizing bacteria.
Studies on removal charactistics and sulfur balance were conducted in the labofatory scale experiment. Almost of suifide was converted to sulfate or elemental sulfur and higher efficiency of sulfide removal was obtained at low sulfide load.The datk green colour of the suspended solids in the reactor can be attributed to poly sulfide at high sulfide load. The following results were obtained:
1) .Sulfide removal ratios were higher than 90 percent until the sulfide loading of 417 mg-S2·d-1·l-1.
2) .The maximum sulfide removal rates were approximately 10mg-S2⋅g-SS-1⋅d-1 (per unit of biomass) and 0.4 mg-S2⋅cm-2⋅d-1 (per mit of surface aera of the hollow fiber membrane) .
3) .The persents of sulfur in biofilm and prccipitated solids were 11.3%, 6.1% and 7.0%, 7.9%in reactor 1 and 2, respectively.
4) .Sulfur oxidizing bacteria contaminated from the air foamed the biofiim on the hollow fiber membrane and transformed sulfide into sulfate and elemental sulfur. Inoculation ofbeggiatoa is not necessary.抄録全体を表示PDF形式でダウンロード (571K) -
中本 信忠, 坂井 正1992 年 28 巻 1 号 p. 7-16
発行日: 1992/06/30
公開日: 2010/02/26
ジャーナル フリー1.緩速ろ過池の砂層表面削り取り目安はろ過閉塞指標の損失水頭である.
2.損失水頭とろ過速度の間にはダルシーの法則が成立つ.そこで欧州で用いられている標準ろ過速度 (4.8m/d) でろ過した場合の損失水頭を標準化損失水頭 (Normalized Head Loss) として紹介した.
3.上田市染屋浄水場の緩速ろ過池のろ過継続日数, 積算ろ過水量および流入懸濁物質量と標準化損失水頭の関係を示し, ろ過閉塞指標としての有用性を示した.
4.糸状藻類が盛んに繁殖する期間はろ過閉塞しにくいことを示し, 糸状藻類被膜をblanket herbと呼んだ.
5.日本の過去と現在, および欧米の例を比較し, 現在のろ過池の使用状況を考察した.抄録全体を表示PDF形式でダウンロード (967K) -
林 紀男, 稲森 悠平, 岩見 徳雄, 岡田 光正, 須藤 隆一1992 年 28 巻 1 号 p. 17-24
発行日: 1992/06/30
公開日: 2010/02/26
ジャーナル フリーBiological treatment process is a typical ecosystem composed of bacteria, fungi, protozoa and small metazoa. However, the role of small metazoa in the purification process has been known only little compared to that protozoa in the biological treatment process. The present study, therefore, was performed to aim at elucidating the role of small metazoa on the purification in biological treatment process by examining their growth and purification characteristics. The purpose of this study was to make clear the interactions on growth between protozoa and small metazoa with mixed culture. In this study, Rotatoria such asPhilodina erythrophthalma (P), Oligochaeta such asAeolosoma hemprichi (A), Protozoa such asColpidium camphylum (C) and Bacteria such asAcinetobacter calcoaceticusIAM 1517 were used as one the case of mixed culture. Results may be summerized as follows : (1) The growth ofP. eryhrophthalmaandA. hemprichiwere decreased remarkably in case of inoculate P, A, C at the same time simultaneously. (2) Maximum number (Nmax) ofC. ramphylumat the logalistic growth phase ofP. erythrophthalmaandA. hemprichi. (3) Specific growth rate and Nmax ofC. camphylumat the stationary phase ofP. erythrophthalmaandA. hemprichi. (4) Growth abilities was enhanced in order of monoxenic culture (P system and A system), PA system, PAC system and PC or AC systems.抄録全体を表示PDF形式でダウンロード (800K) -
明賀 春樹, 浅野 英之, 角田 ふで子1992 年 28 巻 1 号 p. 25-31
発行日: 1992/06/30
公開日: 2010/02/26
ジャーナル フリーExperimental investigations of the effects of the different kinds of hydrogen donors addition on the sludge selfimmobilization of upflow sludge blanket (USB) denitrification reactors were carried out. Results indicated that highly settleable and active granular sludge was produced when using methanol as the hydrogen donor andHyphomicrobiumwas the dominant bacteria in the granular sludge. On the other hand, in tests using glucose and acetate as the hydrogen donor, reactor performance was much poorer than when using methanol as the donor. Although the mechanism of sludge self-immobilization could not be made clear, the factors such as tangling of filamentous-like bacteria, gentle mixing, upflow reactor situation and extracellular biopolymers production, seem to be most important for granular sludge formation in comparison with other self-immobilization processes.抄録全体を表示PDF形式でダウンロード (5158K) -
福島 博, 小林 艶子, 栗原 美香, 藤田 晴江1992 年 28 巻 1 号 p. 33-39
発行日: 1992/06/30
公開日: 2010/02/26
ジャーナル フリーPDF形式でダウンロード (2338K) -
福島 博, 小林 艶子, 栗原 美香, 藤田 晴江1992 年 28 巻 1 号 p. 40-45
発行日: 1992/06/30
公開日: 2010/02/26
ジャーナル フリーPDF形式でダウンロード (10029K) -
福島 博, 小林 艶子, 栗原 美香, 藤田 晴江1992 年 28 巻 1 号 p. 46-50
発行日: 1992/06/30
公開日: 2010/02/26
ジャーナル フリーPDF形式でダウンロード (8251K)
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