A method for improving the settling performance of activated sludge
A technology of activated sludge and settling performance, which is applied in chemical instruments and methods, water/sludge/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problem of poor settling performance of activated sludge, low sludge load, sewage To improve the flocculation and sedimentation performance, prevent anaerobic fermentation and improve the settlement performance
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Embodiment 1
[0021] A method for improving the settling performance of activated sludge, comprising the steps of:
[0022] (1) The wastewater containing activated sludge is pretreated to remove gravel, stones, and fragments, and then add a degreasing agent to remove the grease dispersed in the wastewater together with other organic dirty substances. The degreasing agent is determined by weight percentage It is composed of 0.003% polyoxyalkylene isohexadecyl decyl ether, 0.005% by weight sodium lauryl sulfate, and 0.005% by weight fatty alcohol ether sodium sulfate to obtain a solid-liquid mixture;
[0023] (2) The solid-liquid mixture is transported to a conical settling tank or clarifier at the bottom, and by gravity settling, the activated sludge solids with good settling properties are separated and exported from the bottom;
[0024] (3) Transport the remaining mixture on the upper part of the conical sedimentation tank or clarification tank to the aeration tank, feed oxygen into the ae...
Embodiment 2
[0031] A method for improving the settling performance of activated sludge, comprising the steps of:
[0032] (1) The wastewater containing activated sludge is pretreated to remove gravel, stones, and fragments, and then add a degreasing agent to remove the grease dispersed in the wastewater together with other organic dirty substances. The degreasing agent is determined by weight percentage 0.5015% polyoxyalkylene isohexadecyl decyl ether, 0.1025% by weight sodium lauryl sulfate, and 0.5025% by weight fatty alcohol ether sodium sulfate to obtain a solid-liquid mixture;
[0033] (2) The solid-liquid mixture is transported to a conical settling tank or clarifier at the bottom, and by gravity settling, the activated sludge solids with good settling properties are separated and exported from the bottom;
[0034] (3) Transport the remaining mixture on the upper part of the conical sedimentation tank or clarification tank to the aeration tank, feed oxygen into the aeration tank, ma...
Embodiment 3
[0041] A method for improving the settling performance of activated sludge, comprising the steps of:
[0042] (1) The wastewater containing activated sludge is pretreated to remove gravel, stones, and fragments, and then add a degreasing agent to remove the grease dispersed in the wastewater together with other organic dirty substances. The degreasing agent is determined by weight percentage It is composed of 1% polyoxyalkylene isohexadecyl decyl ether, 0.2% by weight sodium lauryl sulfate, and 1% by weight fatty alcohol ether sodium sulfate to obtain a solid-liquid mixture;
[0043] (2) The solid-liquid mixture is transported to a conical settling tank or clarifier at the bottom, and by gravity settling, the activated sludge solids with good settling properties are separated and exported from the bottom;
[0044] (3) Transport the remaining mixture on the upper part of the conical sedimentation tank or clarification tank to the aeration tank, feed oxygen into the aeration tan...
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