Title:
【発明の名称】活性汚泥を原料とする土壌改良材の製造法
Document Type and Number:
Japanese Patent JPS6017440
Kind Code:
B2
Abstract:
PURPOSE:To obtain at a low cost a soil conditioner contg. a trace element and excellent in fermentative effect, by adding a vegetable fiber scum to an activated sludge from org. waste water, mixing fly ash therewith ater squeezing water, and then charging the resulting mixt. to a rotary fermenter, where it is aged. CONSTITUTION:A vegetable fiber scum is added to an activated sludge from org. waste water such as a slurried activated sludge produced by biological treatment of org. waste water from a paper mill, and, after squeezing water to attain a water of 60-70%, the water content is adjusted to about 50% by mixing about 5-30wt% fly ash, i.e., pulverized coal ash. Then the purpose soil conditioner is obtd. by feeding the mixt. obtd. to a rotary fermenter, where it is aerobically fermented with agitation and addition of air for a certain period of time and aged to attain a carbon ratio of 30-40%. It is possible to age the mixt. of the activated sludge and fly ash to attain a carbon ratio of 30-40wt% by depositing it for a certain period of time, instead of feeding it to the rotary fermenter.
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Inventors:
UCHIDA TSUNEO
TAKAHASHI YOSHIRO
SHIMIZU AKIO
TAKAHASHI YOSHIRO
SHIMIZU AKIO
Application Number:
JP11920480A
Publication Date:
May 02, 1985
Filing Date:
August 29, 1980
Export Citation:
Assignee:
TAKASAKI KASEI KK
International Classes:
C09K17/00; C02F11/02; C02F11/14; C02F11/16; C05F7/00; C09K17/32; C09K17/42; C09K17/50; C09K101/00; (IPC1-7): C09K17/00
Attorney, Agent or Firm:
Kiyoshi Minoura
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