JP2012152708A5 - - Google Patents

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Publication number
JP2012152708A5
JP2012152708A5 JP2011015362A JP2011015362A JP2012152708A5 JP 2012152708 A5 JP2012152708 A5 JP 2012152708A5 JP 2011015362 A JP2011015362 A JP 2011015362A JP 2011015362 A JP2011015362 A JP 2011015362A JP 2012152708 A5 JP2012152708 A5 JP 2012152708A5
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Japan
Prior art keywords
magnetic powder
amount
floc
recovered
return
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Pending
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JP2011015362A
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Japanese (ja)
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JP2012152708A (en
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Priority to JP2011015362A priority Critical patent/JP2012152708A/en
Priority claimed from JP2011015362A external-priority patent/JP2012152708A/en
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図4のグラフの縦軸は、磁気分離装置16に送水される直前のフロック中の磁性粉比率を示し、横軸は排出量に対する回収フロックの返送率を示している。また、磁気分離装置16における磁気分離を有効に実行させるため、フロック中の磁性粉比率の下限値を31.4%と設定し、それ以上の磁性粉比率となるように回収フロックの返送率と新品磁性粉の添加量とが定められている。 The vertical axis of the graph in FIG. 4 indicates the ratio of magnetic powder in the floc immediately before being fed to the magnetic separation device 16, and the horizontal axis indicates the return rate of the recovered floc with respect to the discharge amount. In order to effectively execute magnetic separation in the magnetic separation device 16, the lower limit value of the magnetic powder ratio in the floc is set to 31.4 %, and the return rate of the recovered floc is set so that the magnetic powder ratio is higher than that. The amount of new magnetic powder added is determined.
なお、実施の形態では、フロック中の磁性粉比率が下限値の31.4%となるように回収フロックの返送率と新品磁性粉の添加量とが設定されている。具体的には、表1に示すように、原水SS濃度50mg/Lの場合には、回収フロックを返送せず、新品磁性粉のみを30mg/L添加する。原水SS濃度は、SS濃度計40によって検知し、その測定結果に応じて回収フロックの返送量と新品磁性粉の添加量とを表1のように制御する。 In the embodiment, the return rate of the recovered floc and the amount of new magnetic powder added are set so that the magnetic powder ratio in the flock is 31.4 % of the lower limit. Specifically, as shown in Table 1, when the raw water SS concentration is 50 mg / L, the recovered floc is not returned and only new magnetic powder is added at 30 mg / L. The raw water SS concentration is detected by the SS densitometer 40, and the return amount of the recovered flock and the added amount of the new magnetic powder are controlled as shown in Table 1 according to the measurement result.
一方、新品磁性粉の注入量は、制御部24がポンプ38の回転数を制御することにより
行う。制御範囲は、回収フロックを原水供給管12に返送しない場合の注入量を100%
(30mg/L)として0〜100%の範囲とする。新品磁性粉の注入量は、回収フロッ
クの返送量に応じて決定する。例えば、回収フロック返送量が排出量の47%の場合、高
速攪拌槽26に流入する磁性粉の47%も返送されるため、新品磁性粉の注入量は約53
%(16mg/L)でよい。回収フロックの返送量は回収フロックの返送管路に設置した
流量計74により検知し、その測定結果に基づいて制御部24がポンプ38の回転数を制
御することにより、新品磁性粉の注入量を制御する。
On the other hand, the amount of new magnetic powder injected is controlled by the control unit 24 controlling the rotational speed of the pump 38. The control range is 100% of the injection amount when the recovered flock is not returned to the raw water supply pipe 12.
(30 mg / L) as a range of 0 to 100%. The injection amount of new magnetic powder is determined according to the return amount of the recovered floc. For example, if the collected flocs return amount is 47% of the emissions, since the 47% of the magnetic powder flowing into the high-speed stirring tank 26 is returned, the injection amount of the new magnetic powder of about 53
% (16 mg / L). The return amount of the recovered floc is detected by a flow meter 74 installed in the return passage of the recovered floc, and the control unit 24 controls the number of revolutions of the pump 38 based on the measurement result. Control.
JP2011015362A 2011-01-27 2011-01-27 Flocculation magnetic separator Pending JP2012152708A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2011015362A JP2012152708A (en) 2011-01-27 2011-01-27 Flocculation magnetic separator

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP2011015362A JP2012152708A (en) 2011-01-27 2011-01-27 Flocculation magnetic separator
RU2013135306/03A RU2553100C2 (en) 2011-01-27 2012-01-26 Gravity-magnetic separator
MX2013008646A MX2013008646A (en) 2011-01-27 2012-01-26 Flocculation magnetic separation device.
PCT/JP2012/051612 WO2012102324A1 (en) 2011-01-27 2012-01-26 Flocculation magnetic separation device
CA2825752A CA2825752C (en) 2011-01-27 2012-01-26 Flocculation magnetic separator

Publications (2)

Publication Number Publication Date
JP2012152708A JP2012152708A (en) 2012-08-16
JP2012152708A5 true JP2012152708A5 (en) 2012-09-27

Family

ID=46580888

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2011015362A Pending JP2012152708A (en) 2011-01-27 2011-01-27 Flocculation magnetic separator

Country Status (5)

Country Link
JP (1) JP2012152708A (en)
CA (1) CA2825752C (en)
MX (1) MX2013008646A (en)
RU (1) RU2553100C2 (en)
WO (1) WO2012102324A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6078853B2 (en) * 2014-02-13 2017-02-15 学校法人慈恵大学 Magnetic adsorption quantification device
KR20170125795A (en) 2015-03-13 2017-11-15 후지 덴키 가부시키가이샤 Method for treating scrubber effluent, and apparatus for treating scrubber effluent
JP6663254B2 (en) * 2016-03-08 2020-03-11 富士電機株式会社 Wastewater treatment apparatus and wastewater treatment method
JP6625907B2 (en) * 2016-03-08 2019-12-25 富士電機株式会社 Wastewater treatment method and wastewater treatment system

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3412641B2 (en) * 1993-10-13 2003-06-03 東北電力株式会社 Coagulation treatment of low turbidity wastewater from power plants
RU2094394C1 (en) * 1995-08-02 1997-10-27 Константин Леонидович Ястребов Method of purification of natural water and sewage and plant for its implementation
JPH09168752A (en) * 1995-10-20 1997-06-30 Hitachi Ltd Purifying apparatus
JPH09117618A (en) * 1995-10-24 1997-05-06 Hitachi Ltd Purifying device
RU2130433C1 (en) * 1997-05-22 1999-05-20 Новосибирский государственный проектно-изыскательский институт "ВНИПИЭТ" Method of treating industrial waste waters, installation and galvanic coagulator for implementation of this method
JPH1157309A (en) * 1997-08-21 1999-03-02 Kurita Water Ind Ltd Flocculation treatment and device therefof
JP2006187697A (en) * 2005-01-04 2006-07-20 Hitachi Ltd Filtration cleaning apparatus
JP2007029802A (en) * 2005-07-25 2007-02-08 Fuji Xerox Co Ltd Discharge water treatment method
JP5318389B2 (en) * 2007-09-28 2013-10-16 株式会社日立製作所 Coagulation equipment
JP5115221B2 (en) * 2007-10-01 2013-01-09 株式会社日立プラントテクノロジー Magnetic disk, manufacturing method thereof, and magnetic separation device
JP5228520B2 (en) * 2008-02-19 2013-07-03 栗田工業株式会社 Coagulation sedimentation method

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