In operational phase, the color of granular sludge in each compartment are bright black, the sludge concentration gradually become larger, the methanogenic activity also increased.
运行阶段，颗粒污泥颜色变深，全部变成亮黑色，污泥浓度逐渐变大，产甲烷活性也增强。
In operational phase, the color of granular sludge in each compartment are bright black, the sludge concentration gradually become larger, the methanogenic activity also increased.
运行阶段，颗粒污泥颜色变深，全部变成亮黑色，污泥浓度逐渐变大，产甲烷活性也增强。
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