Title:
VESSEL BALLAST WATER TREATMENT CHEMICAL FEEDER AND VESSEL BALLAST WATER TREATMENT DEVICE HAVING THE SAME
Document Type and Number:
Japanese Patent JP2019058858
Kind Code:
A
Abstract:
To provide accurately injecting ballast water treatment chemicals into ship's ballast water and reducing the size and cost of dosing equipment.SOLUTION: A flowmeter 2 for measuring the flow rate of ballast water flowing in the ballast piping 1, a dosing piping 6 including a dosing pump 7A for injecting a ballast water treatment chemical into the ballast piping 1 from the medication tank 5, and ballast water treatment Vessel ballast water treatment dosing system comprising a TRO meter 4 for measuring TRO concentration of ballast water to which a drug is added, and a control device 9A for outputting a dosing signal based on the measurement values of the flow meter 2 and the TRO meter 4. A flow control valve 10 is provided on the downstream side of the chemical feed pump 7A of the chemical feed pipe 6. A medicine return pipe 11 branched from the medicine injection pipe 6 between the medicine injection pump 7A and the flow control valve 10 and having a tip connected to the medicine tank 5 or the upstream side of the medicine injection pump of the medicine injection pipe is provided . The controller 9A outputs a chemical injection signal for controlling the opening degree of the flow control valve 10.SELECTED DRAWING: Figure 1
Inventors:
FUKUZAWA KOTARO
HAYASHI KAZUKI
MIYATA HIROSHI
HAYASHI KAZUKI
MIYATA HIROSHI
Application Number:
JP2017185043A
Publication Date:
April 18, 2019
Filing Date:
September 26, 2017
Export Citation:
Assignee:
KURITA WATER IND LTD
International Classes:
C02F1/50; B63B13/00
Attorney, Agent or Firm:
Tsuyoshi Shigeno
Takayuki Shigeno
Takayuki Shigeno