Synchronous municipal sewerage-sludge stabilization
  • 【DOI】

    10.3321/j.issn:1001-0742.2005.01.011

  • 【摘要】

    A study on a pilot plant accomplishing synchronous municipal sewerage-sludge stabilization was conducted at a municipal sewerage treatment plant. Stabilization of sewerage and sludge is achieved in th... 展开>>A study on a pilot plant accomplishing synchronous municipal sewerage-sludge stabilization was conducted at a municipal sewerage treatment plant. Stabilization of sewerage and sludge is achieved in three-step process: anaerobic reactor, roughing filter and a microbial-earthworm-ecofilter. The integrated ecofilter utilizes an artificial ecosystem to degrade and stabilize the sewerage and sludge.When the hydraulic retention time(HRT) of the anaerobic reactor is 6 h, the hydraulic load(HL) of the bio-filter is 16 m3/(m2· d), the HL of the eco-filter is 5 m3/(m2 ·d), the recycle ratio of nitrified liquor is 1.5, the removal efficiency is 83%-89% for CODCr, 94%-96% for BOD5, 96%-98% for SS, and 76%-95% for NH3-N. The whole system realizes the zero emission of sludge, and has the characteristics of saving energy consumption and operational costs. 收起<<

  • 【作者】

  • 【作者单位】

    School of Environment Science and Engineering

  • 【刊期】

    环境科学学报(英文版) ISTIC SCI 2005年1期

  • 【关键词】

    municipal sewerage  sludge,microorganisms  earthworms  synchronous treatment