Dryingsewagesludge by indirect heating by extraction steam from turbine is the best technology for power generation by sludge incineration because the total cost of sludge disposal is the lowest.
采用汽轮机抽汽间接加热方法干化污泥，污泥处理的直接成本最低，是最佳的污泥焚烧发电技术。
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Rotary dryer is suitable to be promoted for civil sewagesludge industrial drying, but the lack of model to direct the rotary sludge drying process to cause its further promote limited.
A technology of dipping , chemical activation-drying-pyrolysis, charring used for manufacturing activated carbon adsorbents from sewagesludge was discussed.