Can you get more out

of your WTP? –

Optimize it!

Presented By:

Craig Anderson

Jerry Elliott

Michael Grimm

April 30, 2015 1

PRESENTATION OVERVIEW

WTP Audit Team Introduction

WTP Audit Scope

City Facilities

Filtration Testing

Chemical Feed Optimization

Phase 1 Improvements

Discussion

2

TEAM INTRODUCTION

3

WTP AUDIT SCOPE

Operations Review

Staff Interviews

Regulatory Compliance Review

Plant Hydraulic Analysis

Equipment Condition Assessment

Pretreatment Evaluation/Testing

Filtration Evaluation/Testing

Disinfection Strategies

WTP Model

Improvement Cost Opinions 4

PRESENTATION OVERVIEW

WTP Audit Team Introduction

WTP Audit Scope

City Facilities

Filtration Testing

Chemical Feed Optimization

Phase 1 Improvements

Discussion

5

SLUDGE PONDS

CONTROL BUILDING

FINISHED WATER PUMP STATION

1933 FILTRATION PLANT

(3RD CLEARWELL & STORAGE)

6

RIVER PUMP STATION

SLUDGE PONDS

NEW PLANT

OLD PLANT

CONTROL BUILDING

FINISHED WATER PUMP STATION

1933 FILTRATION PLANT

(3RD CLEARWELL & STORAGE)

1930s

1970s

1980s

2000s 7

ONTARIO WTP

8

PRESENTATION OVERVIEW

WTP Audit Team Introduction

WTP Audit Scope

City Facilities

Filtration Testing

Chemical Feed Optimization

Phase 1 Improvements

Discussion

9

OLD PLANT 10

0.01

0.1

1

10

100

Jan-13

Feb-13

Mar-13

Apr-13

May-13

Jun-13

Jul-13

Aug-13

Sep-13

Oct-13

Nov-13

Dec-13

Jan-14

Tu

rbid

ity (

NT

U)

Raw Max Settled

Max Filtered Combined

11

Measuring filter media depth Filter coring tool (in lower left side of photo)

Box excavation with smaller diameter

hollow bucket

Media sample removed with the filter

coring tool (Filter 2 North)

12

13

Measuring filter media depth Filter coring tool (in lower left side of photo)

Box excavation with smaller diameter

hollow bucket

Media sample removed with the filter

coring tool (Filter 2 North)

Filtration Testing

Coordinate map of Old Plant Filters 1 & 2 North media surfaces

14

Filtration Testing Filter Time Collected During Backwash

Cycle (Elapsed Minutes) Measured Expansion

(Inches) Percent

Expansion Filter 1 North 14:00 4.5 12 Filter 2 North 12:00 7 21

0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

1 3 4 6 8 10 12 15

Filter 1

Filter 2

Backwash wastewater turbidity (in NTU) over time

15

Filtration Testing

0

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

1 5 6 7 8 9 10 11 12 14 16 17.3 22.3 25 28.8

Grab

On-line

Filtered water turbidity profile following a backwash event (Filter 1)

16

Filtration Testing

0

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

1 4 10 12 13 14 16 18 19.5 21 24 27 30 34

Grab

On-line

Filtered water turbidity profile following a backwash event (Filter 2)

17

Filtration Testing

Floc retention analysis for Filter 1 North

-18.0

-16.0

-14.0

-12.0

-10.0

-8.0

-6.0

-4.0

-2.0

0.0

0 50 100 150 200 250 300 350

Filter 1 - Core 4-5 (Dirty)- April

Filter 1 - Core 4-5 (Clean)- April

Dep

th B

elo

w M

edia

Su

rfac

e

Turbidity (NTU)

18

Filtration Testing

-25.0

-20.0

-15.0

-10.0

-5.0

0.0

0 100 200 300 400 500 600 700

Core 15/5 Dirty

Core 4/1 Dirty

Core 4/1 AfterBackwash

Dep

th B

elo

w M

edia

Su

rfac

e (I

nch

es)

Turbidity (NTU)

Floc retention analysis for Filter 2 North

19

Filtration Testing

Calcium carbonate precipitation (CCP)

in filter media

20

PRESENTATION OVERVIEW

WTP Audit Team Introduction

WTP Audit Scope

City Facilities

Filtration Testing

Chemical Feed Optimization

Phase 1 Improvements

Discussion

21

Chemical Feed Optimization

Ferric chloride is cheaper to add than adding ACH and polymer

Lbs/Hour Lbs/Day Gal/Day Price/Lbs Price/Day Price/Month Price/Year

Annual Delivery costs

$300/5000 gallons Total Annual Cost CO2 1251 0.07 $87.57 $2,627.10 $31,963.05 $- $31,963.05

ACH 16 mg/L 72 1728 159.5 0.27 $466.56 $13,996.80 $170,294.40 $3,493.05 $173,787.45

polymer 1.3 mg/L 3.7 88.8 10.2 0.9 $79.92 $2,397.60 $29,170.80 $223.38 $29,394.18

Total $235,144.68 Ferric 17 mg/L 95.6 2294.4 194 0.16 $367.10 $11,013.12 $133,992.96 $4,248.60 $138,241.56

22

Chemical Feed Optimization

Ferric Chloride: choice chemical for Old Plant

– Saves $100K per year

– Only one chemical instead of having to add ACH, polymer and carbon dioxide

– Reduces TTHM values

– Can settle and dissolve all calcium carbonate coming into the plant

23

PRESENTATION OVERVIEW

WTP Audit Team Introduction

WTP Audit Scope

City Facilities

Filtration Testing

Chemical Feed Optimization

Phase 1 Improvements

Discussion

24

25

26

QUESTIONS??

27