生物过程中污泥产量的最小化：污泥处置问题的替代解决方案。

Minimization of sludge production in biological processes: an alternative solution for the problem of sludge disposal.

作者信息

Deleris S, Geauge V, Camacho P, Debelletontaine H, Paul E

机构信息

Laboratoire d'Ingénierie des Procédés de l'Environnement, Dépt de Génie des Procédés Industriels INSA de Toulouse, 135 Avenue de Rangueil, 31077 Toulouse Cedex 4, France.

出版信息

Water Sci Technol. 2002;46(10):63-70.

PMID:12479454

Abstract

A combined system associating activated sludge and ozonation was evaluated for the treatment of urban wastewater. Experiments have shown that 70% reduction in sludge production can be reached (compared to a reference system running in low loaded conditions Y(obs) = 0.28 g VSS.g COD(-1)) by applying an ozone dosage of 0.05 g O3/g VSS(treated) Recycling of the ozonated sludge to the aeration tank induces a slight increase in effluent COD, but the biological treatment performance is maintained. Nitrification capabilities are not altered by the sludge reduction process and active biomass measurements revealed that autotrophic biomass seems to be less affected than the heterotrophs. Significant improvements in sludge settling characteristics are observed.

摘要

评估了一种结合活性污泥和臭氧化的联合系统用于处理城市废水。实验表明，通过施加0.05 g O₃/g VSS（处理后）的臭氧剂量，污泥产量可降低70%（与在低负荷条件下运行的参考系统相比，Y(obs)=0.28 g VSS.g COD⁻¹）。将臭氧化后的污泥回流至曝气池会导致出水化学需氧量（COD）略有增加，但生物处理性能得以维持。硝化能力未因污泥减量过程而改变，活性生物量测量表明自养生物量似乎比异养生物量受影响更小。观察到污泥沉降特性有显著改善。