DEVICE FOR DETERMINING AMOUNT OF HEAVY METAL FIXING AGENT TO ADD

WIPO Patent Application WO/2018/047386

A1

Provided is a device for determining the amount of a heavy metal fixing agent to add, with which it is possible to treat residual ash readily and at low cost. A device for determining the amount of a heavy metal fixing agent to add to fly ash H, provided with: a collection unit 10 for collecting fly ash H1 from a fly ash transportation path 2; a weighing unit 20 for weighing a prescribed amount of weighed ash H2 from the fly ash H1 collected by the collection unit 10; an elution unit 30 for eluting the prescribed amount of weighed ash H2 into a solvent and obtaining elution water; an analysis/control unit (addition amount determining unit) 40 for determining, on the basis of the amount of heavy metal contained in the elution water, the amount of a heavy metal fixing agent to be added to the fly ash H; and a discharge unit 24 for discharging residual ash H3 (H1-H2) remaining in the weighing unit 20 to a location different from the elution unit 30 (fly ash transportation path 2). The discharge unit 24 discharges the residual ash H3 to a location different from the elution unit 30, even when the amount of the heavy metal fixing agent to be added to the fly ash H has been determined by the analysis/control unit 40.

KISHINE YOSHITAKA (JP)

PCT/JP2017/010615

March 15, 2018

March 16, 2017

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KURITA WATER IND LTD (JP)

B09B3/00

JPH0919675A	1997-01-21
JPH09276818A	1997-10-28
JP2003260436A	2003-09-16
JP2002205027A	2002-07-23
JP2006320906A	2006-11-30
JP2007069066A	2007-03-22
JP2002179250A	2002-06-26

HAYASHI, Kazuyoshi et al. (JP)

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