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    • 5. 发明授权
    • Biological dephosphatization and (de)nitrification
    • 生物脱磷和(脱)硝化
    • US5252214A
    • 1993-10-12
    • US829463
    • 1992-01-31
    • Gunter LorenzJurgen Lorenz
    • Gunter LorenzJurgen Lorenz
    • C02F3/12C02F3/30
    • C02F3/1215C02F3/308Y02W10/15Y10S210/903Y10S210/906
    • A modified activated sludge system is provided wherein wastewater is treated to reduce BOD, nitrogen, and/or phosphorus. The disclosed system features a zone sequence nitrification/denitrification, with nitrification induced by recycling mixed liquor that contains a significant concentration of oxygen and nitrifying bacteria. With a further modification, the main treatment zones of the treatment system are split into two or more parallel treatment trains that are either high-loaded with BOD or low-loaded with BOD. The high-loaded sections facilitate the sludge generation and BOD removal, while the low-loaded sections are operated for nitrification and to enhance the growth of nitrifying bacteria. The parallel treatment zones combine and pass into a final denitrification zone. Phosphorus removal is achieved with phosphate release in a reverse flow regime to the main treatment, and phosphate retention primarily in aerated treatment zones in the main stream of the process. The phosphorus is discarded from the system as sludge.
    • 提供了改进的活性污泥系统,其中处理废水以减少BOD,氮和/或磷。 所公开的系统具有区域序列硝化/反硝化作用,通过回收含有显着浓度的氧气和硝化细菌的混合液引起的硝化作用。 经过进一步的修改,处理系统的主要处理区被分为两个或更多个平行的待处理列车,这些列车高负载BOD或低负载BOD。 高负荷部分有助于污泥生成和BOD去除,而低负荷部分用于硝化作用并且增强硝化细菌的生长。 平行处理区域结合并进入最终脱氮区。 在主要处理的反向流动状态下,通过磷酸盐释放实现磷去除,主要在主要流程中的充气处理区中进行磷酸盐保留。 磷作为污泥从系统中排出。
    • 10. 发明授权
    • Biological dephosphatization and (de)nitrification
    • 生物脱磷和(脱)硝化
    • US5344562A
    • 1994-09-06
    • US25946
    • 1993-03-03
    • Gunter LorenzJurgen Lorenz
    • Gunter LorenzJurgen Lorenz
    • C02F3/12C02F3/30
    • C02F3/1215C02F3/308Y02W10/15Y10S210/903Y10S210/906
    • A modified activated sludge system is provided wherein wastewater is treated to reduce BOD, nitrogen, and/or phosphorus. The disclosed system features a zone sequence nitrification/denitrification, with nitrification induced by recycling mixed liquor that contains a significant concentration of oxygen and nitrifying bacteria. With a further modification, the main treatment zones of the treatment system are split into two or more parallel treatment trains that are either high-loaded with BOD or low-loaded with BOD. The high-loaded sections facilitate the sludge generation and BOD removal, while the low-loaded sections are operated for nitrification and to enhance the growth of nitrifying bacteria. The parallel treatment zones combine and pass into a final denitrification zone. Phosphorus removal is achieved with phosphate release in a reverse flow regime to the main treatment, and phosphate retention primarily in aerated treatment zones in the main stream of the process. The phosphorus is discarded from the system as sludge.
    • 提供了改进的活性污泥系统,其中处理废水以减少BOD,氮和/或磷。 所公开的系统具有区域序列硝化/反硝化作用,通过回收含有显着浓度的氧气和硝化细菌的混合液引起的硝化作用。 经过进一步的修改,处理系统的主要处理区被分为两个或更多个平行的待处理列车,这些列车高负载BOD或低负载BOD。 高负荷部分有助于污泥生成和BOD去除,而低负荷部分用于硝化作用并且增强硝化细菌的生长。 平行处理区域结合并进入最终脱氮区。 在主要处理的反向流动状态下,通过磷酸盐释放实现磷去除,主要在主要流程中的充气处理区中进行磷酸盐保留。 磷作为污泥从系统中排出。