Enhanced Source Control Through Smart Sensor Technology

Clean Water Professionals of Kentucky & Tennessee Webinar

January 28, 2020

Joshua Balentine

Senior Associate, Project

Manager

• Objectives of the Pretreatment Program:

• Prevent the introduction of pollutants into POTWs which will cause interference

• Prevent the introduction of pollutants into POTWs which will cause pass through

• To improve opportunities to recycle and reclaim municipal and industrial

wastewaters and sludges

Pretreatment Program Objectives

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• These objectives are ensured by the following minimum source control

requirements:

• Control authority sampling once per year

• Control authority inspections once per year

• Industrial User sampling twice per year

• In cases of more frequent sampling

• City in most cases doesn’t have access to real-time meters

• City may not received the data until the next month

• Continuous and monthly data may be generalized not showing full impact of

discharge

Pretreatment Program Monitoring Requirements

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Paradigm Shift

Brown and Caldwell Image Source: https://www.worldbank.org/en/topic/water/publication/wastewater-initiative

• Monitoring Industries more frequently

• Monitoring for emerging contaminants

• Installing smart sensor network at industries

• Installing smart sensor network in the collection system

Enhanced source control is used to not only intended to reduce the

pollutant concentrations to the POTW, but to ensure optimization of the

WRRF and beneficial reuse of valuable byproducts

What is Enhanced Source Control?

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• The City of Memphis has a food and beverage facility

• Facility is required to monitor pH once time per day

• pH limits are 5.5 – 10 s.u.

• The facility achieves a high level of pH compliance, with some noncompliance

• The City installed continuous pH recorder

Example of Enhanced Source Control?

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• What if we could monitor SIUs more frequently for the following parameters:

• What if we can view all of this data on our computers, phone, or tablet in real-

time?

Enhanced Source Control

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• pH

• Flow

• BOD

• TSS

• COD

• Ozone

• Water Level

• Salinity

• Conductivity

• Nitrate

• Nitrite

• Hydrogen Sulfide

• Total Organic Carbon

• Dissolved Organic Carbon

• Assimilable Organic Carbon

• Turbidity

• Dissolved Oxygen

• Chlorine

• Not all data collection requires “significant” human

involvement

• A vast array of parameters can be collected at high

frequency with new technology sensors

• Data can be collected, transmitted and analyzed in

near real-time

• Literally hundreds of

devices are available

for dozens of WQ

parameters

What do we mean by “smart” sensors

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• Assessing collection system

corrosion related to extreme pH

• Assessing COD loading related to

PAA demand

City of Memphis Smart Sensor Pilot Test

• Water quality parameters

• COD

• BOD

• TSS

• pH

• UVT (254nm)

• UVA “fingerprint”

• Locations

• WRRFs influent

• Five SIUs

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s::can lyser systems are being used in harsh environment

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Sensor signals can be “read” in real-time from mobile devices

Screen-shot

from iPhone

shows industry

exceedances

during holiday

weekend

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Current operations treat system data retrospectively

4.0

5.0

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9.0

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14.0

6/20/18 7:12 6/20/18 12:00 6/20/18 16:48 6/20/18 21:36 6/21/18 2:24 6/21/18 7:12

pH

(s.u

.)

Stiles pH Industry C Industry B Industry A

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WWRF

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Data Integration

Data Cleaning

Data Augmentation

Descriptive Analytics

Diagnostic Analytics

Predictive Analytics

Prescriptive Analytics

The path to “smart” operations requires a platform

Organize

CompleteEnsure

accuracy

Why did it

happen?

What will

happen?

Make it

happen

What

happened?

Development progression

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A smart utility compiles

this data, analyzes it, and filters

the information based on the individual

user’s needs to better meet a utility’s overarching

business objectives. This platform allows utilities to

gracefully adapt to changes in technology, growth, and regulations.

Enhanced Source ControlSmart Utilities feed into Smart Cities

16Bull Run Treatment Program

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Joshua Balentine

Senior Associate, Project Manager

Brown and Caldwell | Memphis, TN

JBalentine@brwncald.com

T 615.238.2080 | C 901.570.1253