INFORMATION TO CONSULTANTS for (C3) RFP E15 … TO CONSULTANTS for (C3) ... Andritz Separation Lab Report No.:L-12554, dated December 15, ... cake dryness from BFP dewatering

INFORMATION TO CONSULTANTS for (C3) RFP E15-263 CBJ Biosolids Belt Dryer System

ISSUED BY: City and Borough of Juneau ENGINEERING DEPARTMENT 155 South Seward Street Juneau, Alaska 99801 Date Issued: June 9, 2015

The following information is posted online. Please refer to the CBJ Engineering Contracts Division webpage at: http://www.juneau.org/engineering_ftp/contracts/Contracts.php. This is not an addendum.

INFORMATION ITEMS: Question: We understand that a CBJ sent samples to Andritz to have them study the dewaterability of the Juneau sludge. I understand this was a study that was done with an Andritz centrifuge recently. Could you please send a copy of these dewatering test results to us so we could review? Answer: Two lab reports performed on sludge from the Juneau Douglas Wastewater Treatment Plant and the Mendenhall Wastewater Treatment Planta are attached. These results represent two sludge samples taken on December 3, 2014 and shall be used for informational purposes only. The samples are not representative of all sludge that will be treated by a belt dryer system; variations in sludge occur. The dryer performance criteria in the RFP establish the parameters for operation and treatment. Attachments: Andritz Separation Lab Report No.:L-12554, dated December 15, 2014 Andritz Separation Lab Report No. L-12555, dated December 17, 2014

ENGINEERING DEPARTMENT

LAB REPORT

Report No.: L-12554

Opportunity No.: 1637519

Application: 2997-0017

Division: 41

Product Home: 4417, 4418

Date Report Issued: December 15, 2104

Date Sample Received: December 3, 2014

Author: Phani K. Peddi

Copy: Piché, Hausegger

Customer: City Borough of Juneau

Plant name: Juneau-Douglas Treatment Plant

Attention: Ms. Samantha Stoughtenger

Address: 2009 Radcliffe Road

City, State, Zip: Juneau, AK 99801

Phone: (907) 586-0393

E-mail: [email protected]

ANDRITZ Rep.: APSCO LLC

Attention: Mr. Dale McBain

Address: 1120 8th Street

City, State, Zip: Kirkland, WA 98033

Phone: (206) 617-9921

Email: [email protected]

ANDRITZ Separation Inc.

Area Sales Manager: Mr. Denis Piché

Address: 1010 Commercial Blvd. S.

City, State, Zip: Arlington, TX 76001

Phone: (403) 650-4131


www.andritz.com

Confidential document. All rights reserved. No duplication or disclosure to third parties permitted without the written consent of ANDRITZ.

Confidential document. All rights reserved. No duplication or disclosure to third parties permitted without the written consent of ANDRITZ AG. S:\Process\PROJECTS\J\Juneau Alaska Borough of\L-12554\Revision 1 Juneau, AK, City & Borough of Juneau-Douglas TP, Opp# 1637519, L-12554 Lab Report.docx

Table of contents

Introduction ........................................................................................................................................ 1

Objectives ........................................................................................................................................... 1

Conclusions ..................................................................................................................................... 2-4

Test Data

A. Sample Analysis ..................................................................................................................... 5

B. Polymers Tested ..................................................................................................................... 6

C. Belt Filter Press Test Results ................................................................................................ 6

D. Centrifuge Test Results .......................................................................................................... 7

Discussion .......................................................................................................................................... 8

Attachments

A. Photographs............................................................................................................................ 9

B. Lab Sample Data Sheets ................................................................................................. 10-12

Opportunity No.: 1637519-1

Laboratory No.: L-12554


Page 1

ANDRITZ LABORATORY REPORT

COMPANY : City and Borough of Juneau

Juneau, AK

PROJECT : Juneau-Douglas Treatment Plant

SAMPLE TYPE : Aerobically Digested Sludge

DATE : December 15, 2014

Introduction:

Five (5) gallons of sludge and dewatered cake samples were received in the ANDRITZ laboratory from

the Borough of Juneau AK, on December 3, 2014, for Centrifuge and Belt Filter Press (BFP)

dewatering tests. The sludge sample was collected at Juneau-Douglas Treatment Plant (JDTP).

The JDTP, with a design capacity of 2.76 million gallons a day (MGD) treats an average flow of 0.96

MGD. The influent wastewater is treated in aerated basins after coarse screening and grit removal.

Sludge from the clarification process is digested aerobically and dewatered using a BFP (manufacturer

and model unknown). The customer is inquiring into replacing the existing BFP with an ANDRITZ

High Performance Decanter Centrifuge to produce drier cake for drying or incineration.

Objectives:

The specific objectives of these laboratory tests were:

1. Analyze the sludge and cake sample for physical characteristics.

2. Conduct polymer evaluation tests to select the most effective polymer for centrifuge and BFP

dewatering.

3. Conduct ANDRITZ 2.0m SMX®-S8 Quantum BFP simulation tests and determine the achievable

cake dryness from BFP dewatering.

4. Conduct Centrifuge spin-down tests and determine the anticipated cake dryness from an

ANDRITZ Decanter Centrifuge.




Page 2

Conclusions:

The results of laboratory testing indicated that:

1. The sample was brown in color and emitted earthy odors. It contained 0.88%TS (Total Solids) and

0.81%TSS (Total Suspended Solids), the volatile solids content was 80.5% of TS and the Capillary

Suction Time (CST) was 26.0 seconds. A particle size analysis conducted on the sludge indicated

a fine particle size with 83.4% of TSS less than 45 microns. Centrifuge spin-down test conducted

on the raw sample produced a plug solids content of 6.1%TS and a clear supernatant. The sludge

sample (as received) and spin-down tubes are shown below:

Sludge / ton Spin-down Tubes

The cake sample received had a dryness of 14.5%TS.

2. Several emulsion and dry polymers were tested on the sludge sample to select the most effective

polymer for BFP and centrifuge dewatering. Ashland 857BS is the most effective dry polymer

tested at active dosage rates of 14±1 and 25±1 lbs/ton TSS for BFP and Centrifuge dewatering

respectively. Polydyne C9530 is the most effective emulsion polymer tested at 27±1 and 40±1

active lbs/ton TSS for both BFP and Centrifuge dewatering respectively.

Emulsion polymers produced considerably higher cake dryness (2 – 3 percentage points)

compared to the dry polymers but the dosage rate was high.

3. ANDRITZ 2.0m SMX®-S8 Quantum BFP simulation test was conducted on the sludge using

C-9530 and 857BS. A cake dryness of 15.9%TS was achieved using C9530 (27.7 active lbs/ton

TSS) at a throughput of 365 lbs/hr DS (83 GPM), and 14.9%TS at a throughout of 200 lbs/hr DS

when testing Ashland 857BS. Cake produced using 857BS was thin and difficult to doctor

compared to that produced using C-9530. The simulation tests were conducted at a low speed

(4 FPM) and belt tension (35 PLI).




Page 3

The cake produced using 857BS is shown below:

BFP Cake Sample Blinded Filter Cloth

Drainage curves conducted on the sample conditioned with different polymers produced a

discharge solids content of 4 – 5%TS. The sample conditioned with C-9530 drained at a higher

rate compared to 857BS. The drainage curves are shown below:

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

0 50 100 150 200 250

Dis

ch

arg

e S

olid

s (

%T

S)

Time (Seconds)

L-12554

C-9530 (24.4 active lbs/ton TS)

857BS (11.4 active lbs/ton TS)




Page 4

Filtrate produced from the drainage tests are shown below:

Filtrates

(from left: C-9530 and 857BS)

4. Centrifuge spin-down tests were conducted on the sample conditioned with C-9530 and 857BS.

C-9530 produced a cake dryness of 19 – 22%TS at a dosage of 40.0 active lbs/ton TSS, and

17 – 19%TS at a dosage of 24.8 active lbs/ton TSS with Ashland 857BS.

Detailed centrifuge test results are shown in the test data section




Page 5

Test Data:

A. Sample Analysis

Total Solids (%TS @ 105oC) 0.88

Suspended Solids (%SS @ 105oC) 0.81

Plug Solids (%TS, @ 3000G’s and 5 minutes) 6.1

pH @ 11°C 6.8

Specific Gravity 1.0

Ash Content of Total Solids (% of TS) 19.5

Volatile Solids Content (% of TS) 80.5

Capillary Suction Time (sec) 26.0

Screened Solids:

Description

+30 Mesh Fraction (% of SS) 2.3 Debris, Hair

30 x 50 Mesh Fraction (% of SS) 2.9 Debris, Fiber

50 x100 Mesh Fraction (% of SS) 3.3 Grit, Fine Fiber

100 x 140 Mesh Fraction (% of SS) 2.9 Grit, Fine Fiber

140 x 230 Mesh Fraction (% of SS) 3.5 Biomass


-325 Mesh Fraction (% of SS) 83.4

Sludge Volume Index (SVI ml/g) 124

Settled Solids (1000 ml @ 30 min) 1000

Color Brown

Odor Earthy




Page 6

B. Polymers Tested

Ashland : K148L, K274FLX, 857BS

BASF : 7878FS40, 8868FS, 7557, 8185

Polydyne : C-6237, C-6266, C-9530, C-3232, C-3282, C-3286, C-3295

C. Belt Filter Press Test Results

Test Temperature (°F) Ambient

Tested Polymer C-9530 857BS

Makeup Polymer Dilution (%) 0.5 0.1

Injection Polymer Dilution (%) 0.5 0.1

Neat Polymer Dosage (lbs/ton TS) 64.5 12.9

Active Polymer Dosage (lbs/ton TS) 27.7 12.9

Recommended Belt Type IFC 6093

BFP Type 2.0m SMX®-S8 Quantum

Throughput (lb TS/hr) 365 200

Throughput (GPM) 83 45

Solids Capture (%SS 1%) 90 90

Belt Speed (FPM) 4 4

Belt Tension (PLI) 35 35

Cake Thickness (mm) 7 4

Cake Solids (%TS) 15.9 14.9




Page 7

D. Centrifuge Test Results

Spin

Time

(Minutes)

G Force Type

Of

Test

Polymer

Type

Polymer

Dosage Rate

(active lbs/ton)

Plug

Solids

(%TS)

Anticipated

Cake Solids

(%TS)

5 3000 Glass Tube None -- 6.1

19 – 22

5 3000 Glass Tube C-9530 40.0 7.0

10 3000 Screen C-9530 40.0 19.0

15 3000 Screen C-9530 40.0 20.2

20 3000 Screen C-9530 40.0 21.1

Spin

Time

(Minutes)

G Force Type

Of

Test

Polymer

Type

Polymer

Dosage Rate

(active lbs/ton)

Plug

Solids

(%TS)

Anticipated

Cake Solids

(%TS)


17 – 19

5 3000 Glass Tube 857BS 24.8 6.3

10 3000 Screen 857BS 24.8 17.5

15 3000 Screen 857BS 24.8 18.1

20 3000 Screen 857BS 24.8 18.4




Page 8

Discussion:

The sludge feed solids content was 0.81%TSS and volatile solids content of 80.5% of TS. The cake

sample from the on-site BFP had a dryness of 14.5%TS. BFP simulation tests conducted on the

sample produced cake drynesses in the range of 14 – 16%TS depending on the type of polymer used.

Emulsion polymers were more effective but estimated dosage rates were high compared to the dry

polymers. Centrifuge dewatering can produce the required cake dryness 20%TS (±1) by using

emulsion polymers. Dry polymers also produced higher cake dryness (17 – 19 %TS) compared to the

current BFP dewatering.

Attached are photographs of the screen analysis and lab sample data sheets for the sample received

for reference and comparison.

The remaining untested sludge will be disposed into the city sewer.

Phani K. Peddi

Process Engineer

PKP/sk

Attach.

Copies of this report have been distributed to the following:

Original +1cc/ Lab

1 cc/ Denis Piché

Sig Hausegger




Page 9

Attachment A – Photographs

Photo #1: +30 Mesh Fraction Photo #2: 30X50 Mesh Fraction

Photo #3: 50X100 Mesh Fraction Photo #4: 100X140 Mesh Fraction





Page 10

Attachment B – Lab Sample Data Sheets




Page 11




Page 12

LAB REPORT

Report No.: L-12555


Application: 2997-0017

Division: 41

Product Home:4417, 4418

Date Report Issued: December 17, 2014

Date Sample Received: December 3, 2014

Author: Phani K. Peddi

Copy: Piché, Hausegger

Customer: Borough of Juneau

Plant name: Mendenhall WWTP

Attention: Ms. Samantha Stoughtenger

Address: 2009 Radcliffe Road

City, State, Zip: Juneau, AK 99801

Phone: (907) 586-0393

E-mail: [email protected]

ANDRITZ Rep.: APSCO LLC

Attention: Mr. Dale McBain

Address: 1120 8th Street

City, State, Zip: Kirkland, WA 98033

Phone: (206) 617-9921


ANDRITZ Separation Inc.

Area Sales Manager: Mr. Denis Piché

Address: 1010 Commercial Blvd. S.

City, State, Zip: Arlington, TX 76001

Phone: (403) 650-4131

Email: [email protected] www.andritz.com

Confidential document. All rights reserved. No duplication or disclosure to third parties permitted without the written consent of ANDRITZ.

Confidential document. All rights reserved. No duplication or disclosure to third parties permitted without the written consent of ANDRITZ AG. S:\Process\PROJECTS\J\Juneau Alaska Borough of\L-12555\Revision 1 Juneau, AK City & Borough of, Mendenhall WWTP, Opp# 1637520-1, L-12555 labreport.docx

Table of contents

Introduction ........................................................................................................................................ 1

Objectives ........................................................................................................................................... 1

Conclusions ..................................................................................................................................... 2-4

Test Data

A. Sample Analysis ..................................................................................................................... 5

B. Polymers Tested ..................................................................................................................... 5

C. Belt Filter Press Test Results ................................................................................................ 6

D. Centrifuge Press Test Results ............................................................................................... 7

Discussion .......................................................................................................................................... 8

Attachments

A. Photographs............................................................................................................................ 9

B. Lab Sample Data Sheets ................................................................................................. 10-12




Page 1

ANDRITZ LABORATORY REPORT

COMPANY : City and Borough of Juneau

Juneau, AK

PROJECT : Mendenhall WWTP

SAMPLE TYPE : Waste Activated Sludge (WAS) from Sequence Batch Reactors (SBR)

DATE : December 17, 2014

Introduction:

Five (5) gallons of sludge and cake samples were received in the ANDRITZ laboratory from the City

and Borough of Juneau, AK, on December 3, 2014, for dewatering tests simulating a Belt Filter Press

(BFP) and a Decanter Centrifuge. The sludge sample was collected at the Mendenhall Wastewater

Treatment Plant (MWWTP).

The MWWTP (design flow 3.1 MGD and average flow 2.26 MGD) treats the influent wastewater in

Sequence Batch Reactors (SBR) after coarse screening and grit removal without primary treatment.

Sludge from the SBR’s is dewatered using a BFP (manufacturer and model unknown). The customer

is inquiring into replacing the existing BFP with an ANDRITZ High Performance Decanter Centrifuge to

produce drier cake for drying or incineration.

Objectives:

The specific objectives of these laboratory tests were to:

1. Analyze the sludge and cake sample for physical characteristics.

2. Conduct polymer evaluation tests to select the most effective polymer for centrifuge and BFP

dewatering.

3. Conduct ANDRITZ 2.0m SMX®-S8 Quantum BFP simulation tests and determine the achievable

cake dryness from BFP dewatering.

4. Conduct Centrifuge spin-down tests and determine the anticipated cake dryness from an

ANDRITZ Decanter Centrifuge.




Page 2

Conclusions:

The results of laboratory testing indicated that:

1. The sample was brown in color and emitted earthy odors. It had a feed solids content of

0.74%TSS (Total Suspended Solids), the volatiles solids content was 91% of TS (Total Solids)

and, the Capillary Suction Time (CST) was 47.0 seconds. It had a fine particle size distribution

with 79.6% of TSS less than 45 microns. Centrifuge spin-down test conducted on the raw sample

at 3000 G’s for 5 minutes produced a plug solids content of 5.6%TS. The sludge (as received)

and spin-down tubes are shown below:

L-12555 Spin-down Tubes

The cake sample received had a dryness of 14.5%TS. The sample had a very high volatile solids

content compared to typical WAS samples tested in the ANDRITZ laboratory (~80% of TS).

Sludges with high volatile solids are difficult to dewater and require high polymer dosage due to its

high organic solids content (fats, oils, grease etc.)

2. Ashland 857BS was the most effective dry polymer tested on the sludge at active dosage rates of

15±1 and 18±1 lbs/ton TSS for BFP and centrifuge dewatering. BASF 8868FS was the most

effective emulsion polymer tested at 20±1 and 29±1 active lbs/ton TSS for BFP and centrifuge

dewatering. Emulsion polymers were more effective in conditioning the sludge and produced

higher cake dryness compared to the dry polymers tested.




Page 3

3. ANDRITZ 2.0m SMX®-S8 Quantum BFP simulation test conducted on the sludge conditioned with

8868FS at 19.1 active lbs/ton TSS produced a cake dryness of 13.5%TS at 380 lbs/hr DS (100

GPM). The cake produced was thin (5 mm) and spread along the belt. Both sticking and blinding

to the cloth were observed.

The cake produced from the BFP simulation test is shown below:

BFP Cake Blinded Filter Cloth

Static Buchner Funnel drainage tests were conducted on the sample conditioned with 8868FS and

857BS. The sample conditioned with 8868FS drained at a higher rate and produced higher

discharge solids (4 – 5%TS) compared to 857BS (2 – 3%TS). The drainage curves are shown

below:

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

0 50 100 150 200 250

Dis

ch

arg

e S

olid

s (

%T

S)

Time (Seconds)

L-12555

8868FS (22.6 active lbs/ton TS)

857BS (15.4 active lbs/ton TS)




Page 4

Filtrates produced from the drainage tests are shown below:

Filtrates

(from left: 8868FS and 857BS)

4. Centrifuge dewatering tests conducted on the sample conditioned with 8868FS at 28.6 active

lbs/ton TSS produced a cake dryness of 17 – 19%TS. Ashland 857BS produced a dryness of

15±1 %TS at a dosage of 17.9 active lbs/ton TSS.

Detailed centrifuge test results are shown in the test data section.




Page 5

Test Data:

A. Sample Analysis

Total Solids (%TS @ 105oC) 0.78

Suspended Solids (%SS @ 105oC) 0.84

Plug Solids (%TS, @ 3000G’s and 5 minutes) 5.6

pH @ 11°C 6.7

Specific Gravity 1.0

Ash Content of Total Solids (% of TS) 9.0

Volatile Solids Content (% of TS) 91.0

Capillary Suction Time (sec) 47.0

Screened Solids:

Description

+30 Mesh Fraction (% of SS) 1.9 Debris, Hair

30 x 50 Mesh Fraction (% of SS) 4.9 Debris, Fiber

50 x100 Mesh Fraction (% of SS) 3.9 Grit, Fine Fiber

100 x 140 Mesh Fraction (% of SS) 2.5 Grit, Fine Fiber



-325 Mesh Fraction (% of SS) 79.6

Sludge Volume Index (SVI ml/g) 118

Settled Solids (1000 ml @ 30 min) 990

Color Brown

Odor Earthy

B. Polymers Tested

Ashland : K148L, K274FLX, 857BS

BASF : 7878FS40, 8868FS, 7557, 8185

Polydyne : C-6237, C-6266, C-9530, C-3232, C-3282, C-3286, C-3295




Page 6

C. Belt Filter Press Test Results

Test Temperature Ambient

Recommended Polymer 8868FS

Makeup Polymer Dilution (%) 0.5

Injection Polymer Dilution (%) 0.5

Neat Polymer Dosage (lbs/ton TS) 47.7

Active Polymer Dosage (lbs/ton TS) 19.1

Recommended Belt Type IFC 6093

BFP Type 2.0m SMX®-S8 Quantum

Throughput (lbs TS/hr) 380

Throughput (GPM) 100

Solids Capture (% SS 1%) 90

Belt Speed (FPM) 7

Belt Tension (PLI) 35

Cake Thickness (mm) 5

Cake Solids (% TS) 13.5




Page 7

D. Centrifuge Test Results

Spin

Time

(Minutes)

G Force

Type

Of

Test

Polymer

Type

Polymer

Dosage Rate

(active lbs/ton)

Plug

Solids

(%TS)

Anticipated

Cake Solids

(%TS)


17 – 19

5 3000 Glass Tube 8868FS 28.6 6.7

10 3000 Screen 8868FS 28.6 18.2

15 3000 Screen 8868FS 28.6 18.3

20 3000 Screen 8868FS 28.6 18.7

Spin

Time

(Minutes)

G Force

Type

Of

Test

Polymer

Type

Polymer

Dosage Rate

(active lbs/ton)

Plug

Solids

(%TS)

Anticipated

Cake Solids

(%TS)


14 – 16

5 3000 Glass Tube 857BS 17.9 6.3

10 3000 Screen 857BS 17.9 14.0

15 3000 Screen 857BS 17.9 14.3

20 3000 Screen 857BS 17.9 14.6




Page 8

Discussion:

The sample contained 0.78%TS and 0.74%TSS and had a very high volatile solids content of 91.0%

of TS. The BFP simulation test conducted on the sludge sample produced lower cake dryness

(13.5%TS) compared to the field dryness (14.5%TS). This may be due to variation in chemical

conditioning or throughput considerations.

A cake dryness of 17-19%TS can be anticipated from an ANDRITZ Decanter Centrifuge using

emulsion polymers. Dry polymers for centrifuge dewatering can also improve the achievable cake

dryness from the existing BFP dewatering but, the impact is lower compared to emulsion polymers.

Attached are photographs of the screen analysis and lab sample data sheets for the sample received

for reference and comparison.

The remaining untested sludge will be disposed into the city sewer.

Phani K. Peddi

Process Engineer

PKP/sk

Attach.

Copies of this report have been distributed to the following:

Original +1cc/ Lab

1 cc/ Denis Piché

Sig Hausegger




Page 9

Attachment A – Photographs

Photo #1: +30 Mesh Fraction Photo #2: 30X50 Mesh Fraction






Page 10

Attachment B – Lab Sample Data sheets




Page 11




Page 12

Documents

INFORMATION TO CONSULTANTS for (C3) RFP E15 … TO CONSULTANTS for (C3) ... Andritz Separation Lab Report No.:L-12554, dated December 15, ... cake dryness from BFP dewatering