Purchase of Hyper Classic Mixer/Aerator for the Department of Sewerage

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Agency:	State Government of Louisiana
State:	Louisiana
Level of Government:	State & Local
Category:	71 - Furniture
Opps ID:	NBD11472427451629135
Posted Date:	Jan 10, 2024
Due Date:	Jan 25, 2024
Solicitation No:	JPP-50-00144292
Source:	Members Only

bid number	description	date issued	bid open date/time	help
JPP-50-00144292	Purchase of Hyper Classic Mixer/Aerator for the Department of Sewerage , Harvey Wastewater Treatment Plant Original: JPP-50-00144292	01/10/2024	01/25/2024 2:00:00 PM CT	JPP

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Bid Number 50-00144292

Purchase of Hyper Classic Mixer/Aerator for the Department of

Sewerage, Harvey Wastewater Treatment Plant

Bid Due: January 25, 2024 AT 2:00 PM

ATTENTION VENDORS!!!

Please review all pages and respond accordingly, complying with all provisions

in the technical specifications and Jefferson Parish Instructions for Bidders and

General Terms and Conditions. All bids must be received on the Purchasing

Department’s eProcurement site, www.jeffparishbids.net, by the bid due date

and time. Late bids will not be accepted.

Jefferson Parish Purchasing Department

200 Derbigny Street

General Government Building, Suite 4400

Gretna, LA 70053

Purchasing Specialist II, Mark Buttery

Email: MButtery@jeffparish.net

Phone: 504-364-2810

Bid No. 50-00144292

SPECIFICATIONS

VERTICAL SHAFT HYPERBOLIC MIXER/AERATOR

JEFFERSON PARISH

DEPARTMENT OF SEWERAGE

HARVEY TREATMENT PLANT

PART 1 GENERAL:

A. Bidder shall supply a package containing: two (2) Hyper Classic – Mixer/Aerators

HCMA/2500-28-15hp, or approved equal, with two (2) support cages, ballasted, self-supporting,

(1) shaft clamp, one (1) control system, and three (3) 6-inch butterfly valves. The package shall

be provided by the authorized factory representative for Jefferson Parish, Louisiana, and for the

brand being offered. Any bids submitted for manufacturers, other than that as specified, must

include in their bid all information needed to fully demonstrate complete compliance with

requirements of these specifications. It is the bidder’s responsibility to provide adequate

information necessary for the complete evaluation of their proposed equipment. Jefferson Parish

reserves the reject any bids that are incomplete or do not demonstrate that they are equal to the

requirements of these specifications. Jefferson Parish shall be the sole judge as to the equality of

any alternate manufacturer’s offering.

1. All equipment included in these specifications shall be furnished by or through a single

mixer/aerator equipment manufacturer who shall be responsible for the design,

coordination, testing and the satisfactory performance of all the components.

2. Verify at the site the dimensions of adjoining items of work before fabrication of items

herein specified. Field measurements shall be taken at the site to insure proper fitting of all

items.

B. Qualifications:

1. The mixer/aerators shall be a product of a manufacturer experienced in the design and

fabrication of equipment of this type.

C. Services of Manufacturer’s Representative:

1. Provide services of a manufacturer’s factory representative, specifically trained on type of

equipment specified.

a. Installation: Assist in installation and leveling of mixer/aerator and in coordinating

electrical connections or any other miscellaneous coordination: 1 Person-days for each unit

(non-consecutive)

Bid No. 50-00144292

b. Start-up and acceptance testing: 6 Person-days (non-consecutive)

c. Operation and maintenance (O&M) instructions: 1 Person-day.

2. If there are difficulties in the operation of the equipment due to the manufacturer’s design

or fabrication, additional service shall be provided at no additional cost to Jefferson Parish.

1.0 WARRANTY:

A. The manufacturer of the mixer/aerator package shall warrant that all equipment supplied shall be

free from defects in material and workmanship and that it will replace or repair, F.O.B, its factory

or repair facility authorized by the manufacturer, any part or parts returned to it, which

examination shows to have failed under normal use and service by the user within 12 months after

the startup or 18 months after shipment, whichever is sooner.

B. Warranties and guarantees by the suppliers of various components in lieu of a single source

responsibility by the aerator/mixer manufacturer will not be accepted. The aerator/mixer package

manufacturer shall be solely responsible for the warranty of the equipment and all related

components.

C. In the event a component fails to perform as specified or is proven defective in service during the

warranty period, excluding items of supply normally expended during operation, the aerator/mixer

manufacturer shall remove the faulty equipment from the aeration tank, provide a replacement

part, install, test and calibrate the replacement equipment, all without cost to Jefferson Parish.

D. Mixer/Aerator bidder must be listed as a factory authorized service center, for the brand they are

bidding and be capable of completely servicing the proposed Mixer/Aerator package within one

(1) hour travel time of the project site. The Mixer/Aerator bidder must own and operate a direct

factory service center and stocking facility capable of completely servicing and suppling spare

parts for the proposed item within one (1) hour of the project site.

PART 2 - PRODUCTS:

2.1 MANUFACTURERS:

1. Provide vertical shaft hyperbolic mixer/aerator package as manufactured by Invent

Environmental Technologies, Inc., or approved equal.

2.2 DESIGN CONDITIONS:

Bid No. 50-00144292

A. Furnish two (2) hyperbolic mixer/aerators in a cage which shall be standard equipment provided

with all the necessary accessories. The equipment shall be capable of completely mixing the

basin in which it is installed, maintaining homogeneously mixed liquid solids in suspension

without introduction of air. Additionally, the equipment shall be capable of introducing air in

the basin providing the oxygen transfer required in these design conditions. There shall be no

dead zones present in the basin, and uniform dissolved oxygen levels shall be maintained

throughout the zones of the basin.

B. Equipment furnished shall be designed for a marine environment in which the equipment is

exposed to the atmosphere. The equipment shall be designed for operation in hot humid

atmosphere and sub freezing temperatures, and shall be designed to operate continuously,

24 hours per day, 365 days per year.

C. Mixer/aerator shall operate independently from other mixer/aerators. The mixer/aerator shall be

variable speed unit designed to operate continuously.

D. The hyperbolic mixer/aerators shall be designed for the tank dimensions and water surface

(peak, average, and minimum) elevations.

E. A Manufacturer will have the capability to perform a factory SOTR test on the equipment and

will include testing for one unit at the maximum design capacity. Performance tests shall be

conducted using clean water, in a circular test tank of at least 30ft. in diameter. All testing shall

be performed according to the standard ASCE/EWRI2-06 using the pure oxygen desortption

method. Factory testing may be witnessed (travel costs not to be included).

MIXER / AERATOR:

1. Service Conditions

2. Number of Mixer / Aerators:

- Outdoors

2 per tank

3. Liquid Mixed:

- Mixed Liquid

4. Design Liquid Suspended Solids Concentration (mg/l.): - 5,000 mg/L or less.

5. Design Liquid Suspended Solids Concentration Range (mg/l.): - 1,000 mg/L – 5,000 mg/L

6. Mixing Cycle:

7. Zone Configuration and Dimensions:

- Continuous

- 2 per tank

8. Maximum Liquid Depth (ft):

- 15 feet

Performance Requirements

9. Minimum Clean Water Pumping Capacity (gpm):

- 7,684 ft3/min

10. Maximum Propeller Speed (rpm):

11. Minimum Propeller Diameter (inches):

12. Impeller Shape:

allowed)

13. Drive Type:

14. Horsepower Rating:

15. Maximum Shaft Horsepower (Clear Water):

16. Maximum Power Input (kw):

17. Voltage, Phase, Hertz:

18. Rated Current (amp):

19. Start-up Current

20. Motor Speed (rpm):

21. Motor Insulation Class:

22. Maximum Airflow per Mixer / Aerator

23. SOTR68 with 403 scfm, in clean water

24. Maximum required blower pressure at basin rim

Bid No. 50-00144292

- 27.9 rpm

- 98.4

- Hyperbolic (cone shapes not

- Gear Drive

- 15 hp

- 10 hp

- 1.4 W/m3

- 480-3-60 hz

- 18.4.

- 163.8

- 1800

-F

- 403 scfm

- 183.5 lb. O2/h per tank, 2 units

- 5.5 psi

2.3 DETAILS OF CONSTRUCTION:

A. Mixer Design and Construction:

1. General:

a. Each mixer/aerator assembly shall be a hyperboloid impeller type mixer/aerator with a

dry installed heavy duty gear drive and a separate ring sparger to provide supplemental

air. The mixer/aerators shall be designed to provide complete suspension of solids in

the tank, to re-suspend heavy material on the tank bottom and to re-entrain foam from

the surface. The shear ribs in the mixer body shall be capable of dispersing the air into

fine bubbles while handling solids, fibrous materials, and heavy sludge. The shear ribs

will be an integral part of the mixer body for smooth mixing flow acceleration and to

minimize catch points for rags and debris. Welded or tacked fins will not be accepted.

b. Mixer/aerators shall be designed as a vertical shaft mixer/aerator, with a dry installed

motor. The mixer/aerator shall not generate any upward forces on the bridge

construction.

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