# Development of Chemical Precipitation Purchased Equipment

Costs:

Clarifiers

Purchased Equipment Costs are the sum of the following cost elements:

(1) Pump Costs

(2) Tank Costs

(3) Chemical Feed System Costs

(4) Mixer Costs

(5) Clarifier Costs

(6) Filter Press Costs

(7) Sand Filter Costs

Each cost component includes the cost of freight and associated ancillary equipment such as piping, valves, and

controllers.

This te le phone contact report supports EPA’s development of cost element (5) by documenting EPA's

communication with a vendor regarding purchase costs for solids contact clarifiers used in the Steam Electric

cost model.Project No.: 0172. 08 .02 9 .0 4 4 DISTRIBUTION

Page _ 1 _ of __ 1

_

Project Name: Steam /Cost/Compliance Modeling

TELEPHONE CALL RECORD

Outgoing Call Date: 04/12 / 2011 Time: 12:00 p m EST

Company Name: Siemens Contact Name: Thomas Dumbaugh

Phone No.: ( 515 )

- 268

- 8549

Email address: thomas.dumbaugh@siemens.com

Name: Kavya Kasturi ERG

GENERAL SUBJECT: Vendor cost request for Solids contact clarifiers for a chemical precipitation wastewater treatment system.

TOPICS DISCUSSED AND ACTION TAKEN

On April 12 , 20 1 1 at 12 : 0 0 p m I contacted Mr. Thomas Dumbaugh . I explained to M r

. Dumbaugh that we are

working on conceptual level costing of a chemical precipitation wastewater treatment system to treat FGD (flue

gas desulfurization) wastewater fr om steam electric power plants

, and a s a part of this project we are trying to

collect cost information on different components or units of a chemi cal precipitation system

.

I told Mr. Dumbaugh that we would like to obtain purchase costs (including ancillary equipment), power

requirements and any available marketing material or brochures for s olids contact clarifiers for flow rates

ranging from 7 gpm to 700 gpm

. I explained to Mr. Dumbaugh the general set up of the chemical precipitation

system as well as the characteristics of the FGD wastewater. I specifically stated that the chlorides levels could

range from 2,000 ppm to 40,000 ppm.

Mr. Dumbaugh indicated that the smallest size solids contact clarifier would accommodate a flow rate of 100

gpm. For flow rates under 100 gpm, Mr. Dumbaugh suggested using plastic tanks with a mixer.

Mr. Dumbaugh provided costs for a range of flow rates. He indicated the costs included all internal equipment

but did not include the cost of the basin. He said a concrete basin is typically used. The costs also do not include

installation

, which is typically two to three times the purchase cost. Also, Mr. Dumbaugh stated that the costs

are for all steel equipment

, which would accommodate our lower chlorides level of 2,000 ppm but would not be

appropriate for higher chlorides levels. Mr. Dumbaugh indicated he would provide a multiplier that could be

appli ed to the costs to account for using a material appropriate for the chlorides range we expect.

The costs for the clarifiers are provided below:

Flow (gpm) Diameter (ft) Cost ($)

100 12 $118,000

140 14 $122,000

250 18 $130,000

350 22 $ 150,000

470 26 $ 162,000

550 28 $ 168,000

700 32 $ 185,000

Mr. Dumbaugh stated no other ancillary equipment was required. Additionally, he stated that the power

requirements were based on the motor starters. The mixer drive would range from 2 hp for the smallest unit to 5

hp for the largest unit. The scraper drive would be 0. 25 hp for the largest unit.