目
第１章

総次則 ........................................... 1

第１節

目的......................................................... 1§1目

的 ··································································· 1

第２節

ガイドラインの適用範囲 ......................................... 4§2

ガイドラインの適用範囲 ··················································· 4

第３節

ガイドラインの構成 ............................................. 4§3

ガイドラインの構成 ······················································· 4

第４節

用語の定義 ..................................................... 7§4用語の定義 ······························································· 7

第２章

技術の概要と評価 ..................................... 9第１節

技術の概要 ..................................................... 9§5

技術の目的 ······························································· 9§6技術の概要 ······························································ 11§7

技術の特徴 ······························································ 13§8DHS ろ床の概要と特徴 ····················································· 16§9生物膜ろ過施設の概要と特徴 ·············································· 20§10技術の適用条件 ·························································· 21§11

導入シナリオ ···························································· 25

第２節

実証研究に基づく評価の概要 .................................... 29§12

技術の評価項目と評価方法 ················································ 29§13

技術の評価結果 ·························································· 31

第３章

導入検討 .............................................34

第１節

導入検討手法 .................................................. 34§14

導入検討手順 ···························································· 34§15

基礎調査 ································································ 35§16

設置可否の検討 ·························································· 37§17

導入効果の検討 ·························································· 39§18

導入判断 ································································ 45（i）

第２節

第４章

導入効果の検討例 .............................................. 46

計画・設計 ...........................................52

第１節

導入計画...................................................... 52§19

計画の手順 ······························································ 52§20基本事項の把握 ·························································· 53§21

設計条件の設定 ·························································· 54§22

施設計画の検討 ·························································· 56§23

施設配置の検討 ·························································· 57§24

導入効果の検証 ·························································· 59

第２節

施設設計...................................................... 60§25

施設設計の全体的な考え方 ················································ 60

第３節

DHS ろ床 ...................................................... 62§26

施設構成 ································································ 62§27

DHS ろ床の設計 ··························································· 63§28

既設改造の留意点 ························································ 66

第４節

生物膜ろ過施設 ................................................ 67§29

施設構成 ································································ 67§30

生物膜ろ過施設の設計 ···················································· 68§31

既設改造の留意点 ························································ 70

第５節

その他付帯施設 ................................................ 71§32

前処理施設 ······························································ 71§33

付帯施設 ································································ 73

第６節

その他留意点 .................................................. 74§34

再更新時のダウンサイジング手法 ·········································· 74§35

環境対策 ································································ 75§36監視制御システム ························································ 76§37

汚泥処理設備への影響 ···················································· 79

第５章

維持管理 .............................................80

第１節

システム全体としての管理 ...................................... 80§38

本技術の立上げ方法 ······················································ 80§39

本技術の基本運転方法 ···················································· 82§40

維持管理体制 ···························································· 83
（ii）

第２節

運転管理...................................................... 84§41

DHS ろ床 ································································· 84§42

生物膜ろ過施設 ·························································· 85§43水質管理 ································································ 87§44環境対策 ································································ 88

第３節

保守点検...................................................... 89§45

保守点検 ································································ 89

第４節

異常時の対応と対策 ............................................ 93§46

異常時の対応と対策 ······················································ 93

資料編
１. 実証研究内容 ...................................................... 96
1.1 実証研究概要································································ 96
1.2 実証研究結果································································ 99

２. ケーススタディ ................................................... 111
2.1 設計条件··································································· 111
2.2 処理フロー································································· 1112.3 容量計算··································································· 111
2.4 機器リスト································································· 114

３. 標準活性汚泥法のダウンサイジング性能（参考） ...................... 117
3.1 電力使用量原単位··························································· 117
3.2 薬品使用量原単位··························································· 118
3.3 汚泥発生率································································· 118
3.4 脱水性能··································································· 120
3.5 脱水機供給汚泥濃度························································· 120

４. 海外等への適用の留意点 ........................................... 121
５. 須崎市終末処理場におけるダウンサイジング効果 ...................... 122
5.1 施設諸元··································································· 1225.2 試算範囲··································································· 123
5.3 試算条件··································································· 123
5.4 ダウンサイジング性能 ······················································· 124

６. 問い合わせ先 ..................................................... 126（iii）