AN ANAEROBIC FLUIDIZED BED BIOREACTOR SYSTEM FOR AN ADVANCED WASTEWATER TREATMENT

用于高级废水处理的厌氧流化床生物反应器系统

• 批准号: 07555459
• 负责人: SHIMIZU Tatsuo
• 金额: $ 0.58万
• 依托单位: HOKKAIDO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07555459/
• 关键词: advanced wastewater treatment system; anaerobic fluidized bed bioreactor; contact aerator; coagulant; pelletization of sewage; phosphorus removal; nitrification; denitrification; 嫌気性流動層バイオリアクター; 負荷量

A new, simple wasterwater treatment system without the conventional primary clarifier was developed for an advanced waste water treatment system. It consisted of an anaerobic fluidized pellet bed bioreactor (AFPB bioreactor) followed by an aerobic biological treatment process. Simultaneous removal of suspended solids, organic matter, phosphorus and nitrogenous compounds was examined. The following results were obtained :(1) In the AFPB bioreactor, suspended solids, colloidal matter and phosphorus were coagulated using a small amount of polymerized aluminum chloride and weak anonic polymers to generate large sized sludge pellets which separated rapidly from the system.(2) A filamentous bacteria Beggiatoa sp.was greatly responsible for the formation of the sludge pellet with high density.(3) The AFPB bioreactor functioned not only physically to separate suspended solids and phosphorus compounds as agglomerates, but also biologically to remove organic substances as well as nitrogenous compounds. Suspended and soluble organic substances in the influent wastewater were effectively used for biological denitrification by recycling the clarified, nitrified effluent from the aerobic biological treatment process to the AFPB bioreactor, and a stable nitrogen removal could be accomplished.(4) The process proposed in this study could remove a variety of pollutants such as COD,suspended solids, nitrogen and phosphorus components simultaneously at the quite short retention time of 5h, producing good quality effluent even at water temperatures as low as 10ﾟC.(5) The AFPB bioreactor system could be applied to high strength of waste water such as filtrate from dehydration of sewage sludge.

针对一种深度废水处理系统，开发了一种新的、简单的废水处理系统，该系统不需要传统的一级澄清池。它由厌氧颗粒床生物反应器(AFPB生物反应器)和好氧生物处理工艺组成。考察了悬浮物、有机物、磷和含氮化合物的同时去除。结果表明：(1)在AFPB生物反应器中，悬浮固体、胶体物质和磷被少量聚合的三氯化铝和弱阴离子聚合物凝聚，生成大尺寸的污泥颗粒，并迅速从系统中分离出来。(2)丝状细菌Beggiatoa sp.是形成高密度污泥颗粒的主要原因。(3)AFPB生物反应器不仅起到物理分离悬浮固体和磷化合物的作用，而且还起到生物去除有机物和含氮化合物的作用。通过将好氧生物处理过程中的澄清、硝化出水回用于厌氧生物反应器，可以有效地将进水中的悬浮有机物和可溶性有机物用于生物脱氮，实现稳定的脱氮。(4)本研究提出的工艺可以在较短的停留时间内同时去除多种污染物，如化学需氧量、悬浮固体和氮磷组分，即使在低至10ﾟC的水温下也能产生良好的出水水质。(5)厌氧生物反应器系统可用于污水污泥脱水出水等高浓度废水。

项目成果

Hamaguchi, T.et.al: "Simultaneous Removal of Nitrogenous and Phosphorus Substances of a filtrate from dehydration of sewage sludge by using Chemical Coagluation bioreactor system" PPM. vol.26, No.1. 42-47 (1995)

Hamaguchi，T.et.al：“使用化学混凝生物反应器系统同时去除污水污泥脱水滤液中的氮和磷物质”PPM。

清水達雄: "流動層造粒バイオリアクターシステムによるSS、COD、窒素およびリン除去" 水環境学会誌. 18. 138-147 (1995)

Tatsuo Shimizu：“通过流化床造粒生物反应器系统去除SS、COD、氮和磷”日本水环境学会杂志18. 138-147 (1995)。

Shimizu, T: "An Anaerobic Fluidized Pellet Bed Bioreactor Process for Simultanous Removal Organic, Nitrogenous and Phosphorus Sabstances." Water Resarch. 28. 1934-1952 (1994)

Shimizu, T：“一种同时去除有机物、氮和磷物质的厌氧流化颗粒床生物反应器工艺。”

Shimizu, T.et.al: "Biological Denitrification Using a Flocculated Sewage Sludge as a Carbn Source" Jap.J.of Wat.Treat.Biology. vol.32, No.1. 23-32 (1996)

Shimizu, T.et.al：“使用絮凝污水污泥作为碳源的生物反硝化”Jap.J.of Wat.Treat.Biology。

濱口利男: "化学凝集バイオリアクターシステムによる返流水の窒素・リン除去" PPM. 26・1. 42-47 (1995)

Toshio Hamaguchi：“使用化学混凝生物反应器系统去除回水中的氮和磷”PPM 26・1（1995）。