Water Quality Monitoring Technology of Total...
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Water Quality Monitoring Technology of Total Pollutant Load Control System in Japan Japan Environmental Technology Association Managing Director Susumu Yamauchi February 22, 2019
Transcript of Water Quality Monitoring Technology of Total...
Water Quality Monitoring Technologyof Total Pollutant Load Control System in Japan
Japan Environmental Technology AssociationManaging Director
Susumu Yamauchi
February 22, 2019
JETA (Japan Environmental Technology Association)1979: JETA was established 2011: A permit was granted by the Public Interest Corporation Commission2019: The 40th anniversary
What we can do?
(1) Investigation and Research of development and improvement of environmental measurement technology. (2) Seminars and training in environmental measuring technology, and the certifying
examination of environmental measurement expertise. (3) Research and monitoring for enhancement of performance in international operations of
environmental measuring technology , and international technical co-operation.(4) Technological course of maintenance expertise for environmental measuring system (5) Other activities, publication of literature regarding environmental measuring technology, etc.
2
Members 3
Instrument manufacturing company : 11 companiesMaintenance & service company : 22 companies
JETA Activities 4
Water MonitoringInstruments MaintenanceTraining Session（from 1989）
EnvironmentalAmbient Monitoring Technical Training Session （from 1999）
EnvironmentalAmbient MonitoringTechnical Test（from 2009）
2,400 person examination
The Manual of Maintenance Control of Automatic Water Quality MeasuringInstruments
Water environment management 5
Water pollution of closed sea area 6
Red tide
Blue tide
White tide
Problem
The figure source: Ministry of the Environment
History of water quality regulation in Japan 7
1953～：Pollution disease in Minamata (Discharge of Hg → Damages of lives)1958：Regulation for Factory wastewater by manual method1971：The Ministry of the Environment was established1978：COD Monitoring regulation
COD = Chemical Oxygen Demand2003：TP (Total Phosphate) and TN (Total Nitrogen)
Monitoring regulation
Wastewater TreatmentSewage
River, Lake, Ocean
COD, TP,TNTotal pollutant load control system
(TPLCs)
Pollutant load reduction situation 8
The figure source: Ministry of the Environment
Ise BayTokyo Bay
Seto inland Sea■Domestic ■Industrial ■Others
CO
D lo
ad (
t/da
y)
1979 1989 1999 2009 2019 1979 1989 1999 2009 2019 1979 1989 1999 2009 2019(Plan) (Plan) (Plan)
COD TPLCs startCOD TPLCs start
COD TPLCs start
Pollutant load reduction situation 9
Ise BayTokyo Bay
Seto inland Sea
Tokyo Bay Ise Bay
Seto inland Sea
TP
load
(t/
day)
TN
load
(t/
day) ■Domestic ■Industrial ■Others
■Domestic ■Industrial ■Others
The figure source: Ministry of the Environment
1979 1989 1999 2009 2019 1979 1989 1999 2009 2019 1979 1989 1999 2009 2019
1979 1989 1999 2009 2019 1979 1989 1999 2009 2019 1979 1989 1999 2009 2019
(Plan) (Plan) (Plan)
(Plan) (Plan)(Plan)
TN TPLCs start TN TPLCs start
TN TPLCs start
TN TPLCs start TN TPLCs start
TN TPLCs start
Total pollutant load control system 10
The total pollutant load standard is set by the following formula
L = Σ（C・Q×10－３）
L(kg/day)Tolerance of pollution load amount
C(mg/L)Tolerance of COD, nitrogen,phosphorus oncentration
Q(m3/day)Amount of wastewater
※ 大きく分けて２１５種
C,Q:The prefectural governor determines for each type of industry and facilities.The standard value is reviewed every 5 years
Total pollutant load control system 11
Automatic measurement system of TPLCsData monitoring and recording
Flow meter
TP / TN analyzerCOD analyzer(UV, TOC)
Telemeter
Data display, printing
Water pollutionload calculator
Central monitoringstation
Overflow tank
WastewaterTreatment
facility
orInternet
L = Σ（C・Q×１０－３）
Q
C
Total pollutant load control system 12
Daily average drainage（m3/day）
Water quality measurement method (COD,TP,TN)
Measurement frequency(1)Automatic
monitor
(2) Composite sampler +
manual analysis
(3)Manual analysis
(4)Simple
measuring instrument
Over 400 ○ △ ▲ ▲ 3 or more times / daily
200 or more but less than 400 ○ ○ ○ ○ 3 or more times / weekly
100 or more but less than 200 ○ ○ ○ ○
3 or more times / every 2 weeks
50 or more but less than 100 ○ ○ ○ ○ 3 or more times / monthly
△,▲：Only when specially approved by governor
Total pollutant load control system 13
Start Measurement items PointsJapan 1978 COD
About 3,0002003 COD, TP, TN
China 2005 COD, NH3-N About 30,000Korea 2006 COD, TP, TN, pH, TURB About 600
Number of water quality automatic monitor installed In Asia
Water Quality Monitoring System 14
WQMS: Water Quality Monitoring System
Site Example in Korea
Sampling system 15
TN analyzerTP analyzer
DrainWater sampling pump
strainer
Sample adjusting tank
Waste water treatment
Sample water pipe
overflow
The temporary storage of waste
Drainage
COD analyzer(UV analyzer)
(TOC analyzer)The existing water pipe
sample
(Sampling)
wast
e
1. Stable supply of the sample at a constant water pressure in the automatic analyzer.
2. Removal of bubble, coarse suspended solids, settling material.
(Includes reagent)
Measurement method of COD 16
CODcr CODmn TOC UVPrinciple Chemical Reaction Chemical Reaction Heating Non chemical
ReactionMeasurement
Method Titration Titration NDIR UV absorbance
Reagent Dichromate, H2SO4Hg
Potassium, HCｌPermanganate Catalyst No Reagent
ReactionTemperature 165℃ 100℃ 800℃ Room
Temperature
Reaction Time (min) 40～60 30 30～60 Instant
Trouble Many Not so many Not so many No
Running cost（year) High (Reference) (Reference) Low
Japanese marketshare None 20% <10%以下 >70%
COD measurement method in Asia 17
Japan Korea ChinaCODmn Standard for manual
analysis methodStandard for manual analysis method
Generally in the analysis of river water
CODcr Unused Unused Generally in the analysis of factory wastewater
UV method Used for continuous monitoring of wastewater treatment sewage
Unused Used in wastewater treatment process management (Some areas)
TOC method Used in wastewater treatment process management
Law amendment in Mid-2019Application in stages in 2021and2022
Used in wastewater treatment process management
COD monitor 18
Measuring methods
Measurement item：Chemical oxygen demand Oxidation reagent : Potassium permanganate Heating condition : 100 ℃, 30 min Measurement time : 1 hour Measurement range : 0-20mg/L～0-2,000mg/L
Overview
YANACOCOD-380
DKK-TOACODR-400
HORIBACODA-500
TOC(Total Organic Carbon) monitor 19
Measuring methods
Measuring method : Combustion oxidation-NDIR Combustion temperature : 680～900℃ Measurement time : Min 5 min Measurement range : 0-5mg/L～0-20,000mg/L Other functions : Inorganic carbon removal
Overview
TORAYTOC-200
SHIMADZUTOC-4200
YANACOTOC-708R
Ultraviolet (UV) absorption meter 20
l = lo × １０-εCＬ
Ｌog (lo / l ) = (εCＬ） = A
Io ： Incident lightI ： Transmitted lightC ： Organic pollution
concentrationL ： Cell lengthε ： Extinction coefficient
of organic pollutionA ：Absorbance
Measuring methods
(Lambert‐Beer law)
Measurement item : Organic pollution concentration Measuring method : Ultraviolet absorption
spectrophotometry (254nm) Measurement time : Continuous or intermittent Measurement range : 0-0.1abs～0-5abs Other functions : Turbidity correction function (546nm)
Overview
SHIMADZUUVM-402
YANACOYUV-308
HORIBAOPSA-150
DKK-TOAOPM-1610
(546nm)
21Ultraviolet (UV) absorption meter
Sample cell type Cleaning cycle Cleaning method(Type A) Cylindrical/Square Intermittent Wiper, brush etc(Type B) Free fall water stream No need No need(Type C) Cell length modulation Continuous Wiper, brush etc.(Type D) Immersion Continuous Wiper, brush etc.
Types of measurement cell structure
(Type A) (Type B) (Type C) (Type D)
Ultraviolet (UV) absorption meter 22
COD conversion formula : y = a + bx (Linear regression)
UV meter (abs) CO
D v
alue
by
man
ual a
naly
sis
(mg/
L)
○× ×
When there is no correlation→ UV monitor can not be used
How to check the performance of COD monitor 23
Mea
sure
d va
lue
by m
anua
l ana
lysi
s m
etho
d
Measured value of automatic water quality monitor(mg/L)
(mg/L)
OK area
Total phosphorus & total nitrogen monitor24
Measuring methods Overview
YANACOTPN-580
DKK-TOANPW-400
TORAYTPN-100
Decomposition method : Heat decomposition Heating condition : 120 ℃, 30 min Measurement method :
TP : Molybdenum blue method (880nm)TN : Ultraviolet absorbance method (220nm)
Measurement time : 1 hour Measurement range : TP : 0-0.5mg/L～0-250mg/L
TN : 0-2mg/L～0-1,000mg/L
Total phosphorus & total nitrogen monitor25
Measuring methods Overview
SHIMADZUTNP-4200
HORIBATPNA-500
Decomposition method : UV light decomposition Heating condition : 60～95 ℃, 20～30 min Measurement method :
TP : Molybdenum blue method (880nm)TN : Ultraviolet absorbance method (220nm)
Measurement time : 1 hour Measurement range : TP : 0-0.5mg/L～0-250mg/L
TN : 0-2mg/L～0-1,000mg/L
Total nitrogen monitor (Chemiluminescence)26
Measuring methods Overview
YANACOTOC-708R
SHIMADZUTNPC-4110
Decomposition method : Combustion with catalyst Combustion Temperature : 700～850 ℃ Measurement method : Chemiluminescence Measurement time : Min 5～15min Measurement range : TN : 0-2mg/L～0-4,000mg/L
How to check the performance of TP/TN monitor27
Inspection flow
Water quality monitoring 28
Water quality monitoring is necessary from process control and management to wastewater regulation monitoring.We have various water quality monitors and measuring know-how.
For the success of water quality regulation29
Regulation
Water quality improvement plan
Maintenance technology Compliance
Wastewater treatment technologyMeasurement technology
Data management system and scheme
Capital investment(Economic impact)
(JETA)
(JETA)
Japan Environmental Technology AssociationE‐mail： [email protected]
Web : http://www.jeta.or.jp
Thank youFor Beautiful and Rich Environment through the Advancement of Instrumentation Technology
