CNP/Centrisys Airprex Sidestream Phosphorus Removal Equipment - Sole Source PURCHASING AGENT
fIEN DIAN%—v 33 East Broadway Avenue
C� Meridian, ID 83642
Phone: 208-888-4433 Fax: 208-887-4813
I
E
CITY OF MERIDIAN
SOLE SOURCE FORM
Date: 6/2/2020
Item or Service: Sidestream Phosphorus Removal Technology—Airpex by CNP/Centrisys
❑ Sole Source: Item is available from only one vendor. Item is one-of-a kind
item and is not sold through distributors. Manufacturer is a
sole distributor.
Refer to instructions on 2nd page for completion.
JUSTIFICATION: (Attach additional pages if needed)
Please see attached page for Justification.
CERTIFICATION:
I am aware of the requirements set forth in the City's Purchasing Policy& Procedures Manual for competitive bidding and the
established criteria for justification for sole source/sole brand purchasing. I have gathered technical information and have made
a concerted effort to review comparable/equal equipment. I hereby certify as to the validity of the information and feel confident
that this justification for sole source/sole brand meets the City's criteria and is accurate.
Council Approval
7-28-2020
Daniel Berthe Date:
Requestor( r t Name)
Purchasing X /
Approval: (
Department Manager Signature PurqWsing Manager
Meridian City Council Meeting Agenda July 28,2020— Page 70 of 175
Sidestream treatment for the removal of phosphorus from the solids or"sludge" stream at a municipal
wastewater treatment plant is a critical process needed to meet low phosphorus limits in the treated
water leaving the plant. The City's current permit for treated water discharge includes a compliance
schedule requiring design and construction of a sidestream treatment facility by July 31, 2022,followed
by design and construction of additional mainstream treatment facilities to meet very low total
phosphorus limits by 2026.
Although there are currently two systems commercially available that remove phosphorus from the
digested sludge stream at municipal treatment plants, only one of these systems has been installed and
operated full-scale at other U.S. municipal treatment plants.The Airprex system,as manufactured by
CNP/Centrisys Corporation, Kenosha WI has operating installations at Howard County, Maryland and
Medina County, Ohio. City staff have visited these installations and have obtained performance test and
long-term operating data that verify the Airprex system's ability to consistently remove greater than
90%of dissolved phosphorus from the plants' digested sludge streams.Airprex systems are currently
being designed and constructed at several additional U.S. treatment facilities.
The other available digested sludge sidestream treatment system is called NuReSys, as manufactured by
Schwing Bioset, Inc., Somerset, WI. Although this system appears promising, it includes different
equipment and process steps than the Airprex system.There are currently no full-scale NuReSys
installations operational in the U.S. and therefore no U.S.full-scale data proving the system's
phosphorus removal efficiency and ability to operate long term without significant maintenance issues.
The first NuReSys system in the U.S. is scheduled for startup in Pima Arizona in Spring/Summer of 2020,
but operating and maintenance data from this facility will not be available for review and possible
verification of long-term performance in time to meet the City's compliance schedule.
Based on the comparison of available sidestream treatment systems considering treatment
effectiveness, redundancy,and cost, the Public Works Department recommends procuring the Airprex
system from CNP/Centrisys.
The Public Works Department requests a sole source procurement as there is no proven functional
equivalent to the Airprex system.
Meridian City Council Meeting Agenda July 28,2020— Page 71 of 175
Sidestream treatment for the removal of phosphorus from the solids or "sludge" stream at a municipal
wastewater treatment plant is a critical process needed to meet low phosphorus limits in the treated
water leaving the plant. The City's current permit for treated water discharge includes a compliance
schedule requiring design and construction of a sidestream treatment facility by July 31, 2022, followed
by design and construction of additional mainstream treatment facilities to meet very low total
phosphorus limits by 2026.
Although there are currently two systems commercially available that remove phosphorus from the
digested sludge stream at municipal treatment plants, only one of these systems has been installed and
operated full-scale at other U.S. municipal treatment plants. The Airprex system, as manufactured by
CNP/Centrisys Corporation, Kenosha WI has operating installations at Howard County, Maryland and
Medina County, Ohio. City staff have visited these installations and have obtained performance test and
long-term operating data that verify the Airprex system's ability to consistently remove greater than 90%
of dissolved phosphorus from the plants' digested sludge streams. Airprex systems are currently being
designed and constructed at several additional U.S. treatment facilities.
The other available digested sludge sidestream treatment system (NuReSys),as manufactured by Schwing
Bioset, Inc., Somerset, WI. appears promising, however there are currently no full-scale NuReSys
installations operational in the U.S. and no U.S. full-scale data proving the system's phosphorus removal
efficiency and ability to operate long term without significant maintenance issues. The first NuReSys
system in the U.S. is scheduled for startup in Pima Arizona in Spring/Summer of 2020, but operating and
maintenance data from this facility will not be available for review and possible verification of long-term
performance in time to meet the City's federally mandated compliance schedule.
The Public Works Department requests a sole source procurement as there is no proven functional
equivalent to the Airprex system.
Meridian City Council Meeting Agenda July 28,2020— Page 72 of 175
G i1
NUMBER: 06638 DATE: 03/20/20
TO: City of Meridian
33 E. Broadway Ave.
Meridian, Idaho 83642
Budgetary Proposal
Prepared For:
Meridian, ID
CNP AirPrex° System
p
rC
Centrisys/CNP Contact Local Representative
Jerod Swanson Chris McCalib
Regional Sales Manager Treatment Equipment Company
9586 58' place 249 Main Ave S, Ste 107 #322
Kenosha, WI 53144 North Bend, WA 98045
Ph: (262) 654 6006
Direct: (612) 401 2006 Ph: (206) 909-1546
Email: Jerod.swanson@centrisys.us Email: chris@tec-nw.com
Page 1 1
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CNP IS PLEASED TO PROVIDE THE FOLLOWING SCOPE OF SUPPLY FOR AIRPREX@
PROCESS
Description:
AirPrex@ is a sludge optimization and phosphorus recovery process is a patented
phosphorus recovery technology owned by CNP, a division of Centrisys
Corporation. AirPrex@ turns struvite into an opportunity for resource recovery.
Struvite, when formed under a controlled environment, can be harvested and
utilized as a beneficial fertilizer (only with harvesting option). AirPrex@ forms
struvite by stripping out CO2, elevates the pH and adds MgC12 to augment
Mg2+. AirPrex®installs between the anaerobic digester and the dewatering
equipment. The process converts the orthophosphate into struvite crystals, which
is harvested from the bottom of the reactor. AirPrex® mitigates the unexpected
consequence of dewatering Bio-P sludge.
Preliminary Primary Biological Secondary
Treatment Clarifiers Treatment Clarifiers
IN Amok man Ambk To Water
Municipal
Wastewater
Primary Waste Actived
sludge Sludge
AirPrex
gCh
Dewatering M '- Reactor
Centrifuge
41
I ,
Js'
Me th"anogenic
Digester
Dewatered Biosol ids Recovered Struvite
Advantages:
1 . Typically can achieve 2-37. increase of dewatering cake dryness and 20-
307. reduction in polymer consumption vs. non-AirPrex'R Bio-P digested
sludge
2. Typically can achieve >90% reduction of soluble Ortho-P concentration
from dewatering return side-stream.
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3. Typically can achieve up to 35% reduction In the overall plant
orthophosphate due to the reduction in the centrate recycled to the front
of the plant.
ITEM 1 AIRPREX® WITH SEQUESTRATION PROCESS (NO HARVESTING)
A. DESIGN PARAMETERS
Our design calculations are based on the following parameters:
SEQUESTRATION PARAMETERS I ALUE UNITS
Digested sludge flow rate to AirPrex@
reactors 145 gpm
Max Month - Design flow:
Ortho-P in digested sludge, max 360 mg-P/L (as PO4-P)
B. O&M REQUIREMENTS
ITEM L VALUE UNITS
7C12MgCl'
Consumption at 30% w/w 782 gallon/day
solution
Total installed power 62 HP
O&M Labor requirements <1 hours/day
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C. SCOPE OF SUPPLY
ITY
AirPrex® MAP reactor
1 2 - 14 ft. diameter x 33 ft. high
- 39,100 gallons volume
- MOC: 316 SS
Blower and air distribution system
2 2
- 1 PD Blowers for lower air supply/Reactor
3 1 MgC12 storage tank (10,000 gallons)
4 1 MgC12 dosing system (3 diaphragm pumps, sigma controls
and panel, no VFD)
5 1 Defoamer dosing system (2 diaphragm pumps (1 duty, 1
spare), no control panel or VFD)
6 2 Internal piping system for air distribution, chemical supply
and sludge handling
7 2 Instrumentation
8 1 Control Panel
9 1 Start-up and commissioning services
*Note that there is a trade-off between polymer and cake solids improvement,
depending on the needs of the plant, one or the other can be maximized or
both can be improved simultaneously but to a lesser extent.
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PRICING
EQUIPMENT BUDGETARY PRICE PER THE ABOVE
RM SCOPE
AirPrex® Sequestration System $1,937,400
Deduct for two (2) 304SS reactors with
$112,000
316SS on the freeboard
Adder for two (2) platforms around
$31,940
reactors
Adder for two (2) struvite discharge
pumps and pump startup service $42,040
LEADTIME
DELIVERY TIME AFTER ADDITIONAL
EQUIPMENT APPROVED SUBMITTALS* ON-SITE INSTALLATION
TIME
AirPrex® Sequestration System 40 weeks 2 weeks
*typically 6-10 weeks from PO receipt not including approval time by the
engineer.
PAYMENT TERMS
Price Validity: 90 days from the quoted date.
Delivery terms: ex works
Payment terms: 20% down payment after receipt of order confirmation
20% after receipt of submittals
50% notice of shipment, latest 3 weeks after notice of
shipment
10% after start-up
Payment target: 30 days net
Warranty: 12 month after date of commissioning or 18 months after
shipment, whichever comes first. Components that are
subject to usual wear, as well as damages caused by
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CNP-a division of Centrisys Corporation I ISO 9001:2015
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inadequate attendancenp
or faulty operation shall not be
covered by this warranty.
CLARIFICATIONS AND EXCEPTIONS:
Spec 40 73 13: CNP has excluded pressure transmitters (Cerabar S)for struvite
discharge, blower discharge, blower discharge header, MgC12 discharge,
sludge pump suction/discharge as they are not critical to the system
operation.
Spec 40 74 66: Temperature switches for blower package will be supplied by blower
manufacturer
Spec 43 1133 Section 1.03.C: Design requirements are changed based on CNP's final sizing
estimates for this proposal.
Spec 43 1133 Section 1.05.13: Facility Location: Meridian, ID
Spec 43 1133 Section 2.04.A: Manufacturer will provide local control panel for temperature
and/or vibration switch. HOA to be provided by contractor.
Spec 43 33 20.01 Section 2.04.C: CNP takes exception to dosing skid VFDs as well as control
panel.
Spec 43 33 20.01 Section 2.04.G: Spec Section 26 29 24 has not been provided.
Spec 43 33 20.01 Section 2.08.13: No special tools are needed.
Spec 43 4143 Section 1.03.B.1: Does not apply to double wall tanks.
Spec 43 4143 Section 1.05.A: Heat tracing warranty for system is only 1 year.
Spec 43 4143 Section 2.04.D: Molded outlets are not available on rotationally molded double
wall tanks.
Spec 46 63 83 Section 1.04.A.1.b: The reactor will be approximately 33ft tall.
Spec 43 4143 Section 1.06.B.a: CNP will submit initial structural design calculations for approval
by engineer before starting detailed fabrication drawings to ensure
appropriate plate thicknesses.
IF STRUVITE DISCHARGE PUMPS ARE INCLUDED:
Spec 43 23 57.10 Section 2.13.A.2: The stator probe is not certified explosion-proof since the
current is low enough to be considered intrinsically safe.
Spec 43 23 57.10 Section 2.05.A: The pump has a solid drive shaft since a hollow drive shaft can
allow solids to accumulate and hinder the rear joint.
Spec 43 23 57.10 Section 2.06.C: The bearing house has bearings that are sealed and lubricated
for life, so there is no need for a grease fitting on the bearing house.
Spec 43 23 57.10 Section 2.04.C: The FSIP option has been quoted which allows for removal of
rotor without disabling the piping.
Spec 43 23 57.10 Section 2.14.A.6: No spare belt has been included since the pumps are in-line
design which does not use belts.
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Spec 43 23 57.10 Section 2.14.6: No special tools hive been provided since the pump does not
need any special tools.
SCOPE EXCLUSIONS
i Stairwell & stairs
Struvite discharge pumps
■ Any site preparation work including surveying and soil sampling
■ Building and building plans; Civil works such as the foundation plate for
the system or the building
■ Structural and Civil engineering labor
■ Pipes and piping (except from the outside flange of the reactor the
aeration ring inside the reactor)
Sludge holding or storage tanks for sludge equalization
Supply lines (water and electricity) as well as building services (lighting,
water supply / sink) in the office building
Concrete work and core drill holes
a Permits
Readiness of the Equipment before requesting start-up service. Non-
readiness may incur additional charges.
Any other auxiliary equipment or service not detailed above.
Issued by
Zach Mazur
Applications Engineer
Date: 03/20/20
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Centrisys/CNP 9586 58th PlaceKAAMPSN,N A"%Adnidwa�o¢ 26W6 iEaWq@6gmtdsys.com I info@cnp-tec.com
CNP-a division of Centrisys Corporation I ISO 9001:2015