US 12,351,480 B2
Apparatus and method for controlling output for chemical dosing optimization for water treatment plant
Sang Gun Na, Seoul (KR); Hyun Sik Kim, Gimpo (KR); Jun Woo Yoo, Seoul (KR); and Yeong Hyeok Kim, Seoul (KR)
Assigned to DOOSAN ENERBILITY CO., LTD., Changwon (KR)
Filed by DOOSAN ENERBILITY CO., LTD., Changwon-si (KR)
Filed on Jan. 4, 2023, as Appl. No. 18/149,732.
Claims priority of application No. 10-2022-0002173 (KR), filed on Jan. 6, 2022.
Prior Publication US 2023/0212032 A1, Jul. 6, 2023
Int. Cl. B01D 21/30 (2006.01); B01D 29/60 (2006.01); B01D 61/12 (2006.01); B01D 61/22 (2006.01); C02F 1/00 (2023.01); C02F 1/24 (2023.01); C02F 1/44 (2023.01); C02F 1/66 (2023.01); C02F 1/68 (2023.01); C02F 9/00 (2023.01); C02F 1/52 (2023.01)
CPC C02F 1/008 (2013.01) [B01D 21/30 (2013.01); B01D 29/60 (2013.01); B01D 61/12 (2013.01); B01D 61/22 (2013.01); C02F 9/00 (2013.01); C02F 1/001 (2013.01); C02F 1/24 (2013.01); C02F 1/441 (2013.01); C02F 1/444 (2013.01); C02F 1/5209 (2013.01); C02F 1/5245 (2013.01); C02F 1/66 (2013.01); C02F 1/68 (2013.01); C02F 2209/006 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A water treatment system comprising:
a water treatment plant treating water using a chemical agent, the water treatment plant comprising at least one of a dissolved air flotation (DAF) device, an automatic strainer (AS), an ultrafiltration (UF) device, and a reverse osmosis (RO) device;
a water treatment control device, coupled with the water treatment plant, configured to control the water treatment plant based on a chemical dosage control value;
an apparatus for optimizing the chemical dosage control value; and
a transceiver,
wherein the apparatus comprising:
a chemical dosing management part configured to
repeatedly receive, via the transceiver, real-time data from the water treatment plant during successive control periods,
analyze the real-time data to determine a control mode of chemical dosing optimization, the control mode being selected from among a group comprising an auto mode, a guide mode, and a hold mode, and
provide the determined control mode as a management command;
a chemical dosing optimization part configured to analyze the real-time data to derive the chemical dosage control value such that the chemical dosage control value is to set a minimum of a chemical dosage to be dosed in the water while a sensed value of treated water of the water treatment plant is maintained in a predetermined normal value range; and
a chemical dosing output control part configured to provide the chemical dosage control value, via the transceiver, to the water treatment control device that controls the water treatment plant, according to the control mode of the management command,
wherein the chemical dosing output control part is further configured to:
correct the chemical dosage control value;
reset the control mode; and
provide the corrected chemical dosage control value to the water treatment control device according to the reset control mode,
wherein the chemical dosing output control part resets the control mode by
comparing real-time data received for a previous control period of the successive control periods with real-time data received for a current control period of the successive control periods and
resetting the control mode to the hold mode in response to occurrence of a difference of a preset threshold or greater,
wherein the water treatment control device controls the water treatment plant to inject the chemical agent into the water treatment plant according to the chemical dosage control value and the control mode.