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Title:
CHLORINE INJECTION CONTROL DEVICE
Document Type and Number:
Japanese Patent JPH0768270
Kind Code:
A
Abstract:

PURPOSE: To accurately control the concn. of residual chlorine by accurately calculating the decomposition amt. of residual chlorine due to solar radiation.

CONSTITUTION: The estimated quantity of solar radiation after a predetermined time from control time is calculated as the estimated quantity of solar radiation for control by a first operation means 13 and corrected by a second operation means 17 on the basis of the estimated quantity of solar radiation at the control time and the actually measured quantity of solar radiation. The decomposition amt. of residual chlorine due to solar radiation is calculated on the basis of the corrected estimated quantity of solar radiation for control by a third operation means 19 and chlorine injection ratio is calculated by a fourth operation means 20 on the basis of the decomposition amt. of residual chlorine, the actually measured concn. of residual chlorine and the objective concn. of residual chlorine.


Inventors:
KAWAMICHI HITOSHI
KURATA MAYUMI
MIYAJIMA CHIYOUKO
Application Number:
JP21877093A
Publication Date:
March 14, 1995
Filing Date:
September 02, 1993
Export Citation:
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Assignee:
TOSHIBA CORP
International Classes:
C02F1/50; (IPC1-7): C02F1/50; C02F1/50
Attorney, Agent or Firm:
Kazuo Sato (3 others)



 
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