Title:
下水汚泥の濃縮‐脱水および好気的空気乾燥を統合する方法
Document Type and Number:
Japanese Patent JP5526344
Kind Code:
B2
Abstract:
A method of integration of concentration-dehydration and aerobic air-drying of sewage sludge comprises the following steps: (a) conditioning by an organic agent (3); (b) gravitationally concentrating (5) the residual sludge conditioned by the organic agent; (c) conditioning by inorganic agents (7); (d) mechanically dehydrating (8); (e) crushing and dispersing (10); and (f) aerobically air-drying (11). The method has the following advantages: (i) to improve the sedimentation performance of the residual sludge, thus improving the concentration efficiency of sludge, reducing the concentrating time and reducing the volume of the concentrating pool; (ii) to reduce the volume of the dehydrated sludge correspondingly, thus reducing the succedent heat treatment load; (iii) to have low energy consumption for drying; (iv) the sludge granules moving at low speed during the drying process, thus being produced stably and securely without powder; (v) the dried exhaust air can reach environmental-friendly standard discharge after being washed by water; (vi) the output sludge granules are not compact, which is good for utilizing as the succedent resources.
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Inventors:
Jung, Huang Shen
C, Shuway
C, Jacon
Sun, thymine
Yang, High Inn
C, Shuway
C, Jacon
Sun, thymine
Yang, High Inn
Application Number:
JP2012530071A
Publication Date:
June 18, 2014
Filing Date:
November 18, 2009
Export Citation:
Assignee:
Guan Chou, New, Extended, Rising, Environmental, Protection, Technologies, Machinery, Equipment, Company, Limited
International Classes:
C02F11/14; A61L2/10; A61L2/16; A61L11/00; B01D21/01; B01D53/40; B01D53/58; B01D53/77; C02F11/00; C02F11/02; C02F11/06
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Foreign References:
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Attorney, Agent or Firm:
Hirohito Katsunuma