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.

The following email supports EPA’s development of cost element (5) by documenting EPA's 

communication with a vendor regarding freight costs for flocculating clarifiers. The same freight

cost was applied to solids contact clarifiers used in the Steam Electric cost model.
From: "Rasmussen, David C (WT)" <david.rasmussen@siemens.com>

To: "Kavya Kasturi" <Kavya.Kasturi@erg.com>

Date: 4/19/2011 3:10 PM

Subject: RE: Vendor request-Solids contact clarifiers

Figure $3,000 to get all the components to the site.

________________________________

From: Kavya Kasturi [mailto:Kavya.Kasturi@erg.com] 

Sent: Tuesday, April 19, 2011 2:49 PM

To: Rasmussen, David C (WT)

Subject: RE: Vendor request-Solids contact clarifiers

Thanks Dave! This is great! One (hopefully) final question: can you

provide weights for the clarifiers or the cost to ship a clarifier 500

miles?

Thanks again,

Kavya

Kavya P. Kasturi, Environmental Engineer

Eastern Research Group, Inc.

Phone: (703) 633-1701

Fax: (703) 263-7280

kavya.kasturi@erg.com

>>> "Rasmussen, David C (WT)" <david.rasmussen@siemens.com> 4/19/2011

2:53 PM >>>

Kavya:

FEDWA brochure attached.

The only other item you would need would be effluent weirs. Usually made

from fiberglass. Figure for budget costs - tank diameter (ft.) x 3.146 x

$50 /ft.

Need anything else?

Dave R

________________________________

From: Kavya Kasturi [mailto:Kavya.Kasturi@erg.com] 

Sent: Sunday, April 17, 2011 2:48 PM

To: Rasmussen, David C (WT)

Subject: RE: Vendor request-Solids contact clarifiers

Hi Dave,

Thanks for much for the information! This will be very helpful for our

costing effort. I have a couple follow up questions:

Is there any ancillary equipment required for the clarifier and/or

included in the cost estimate?

Also, is there any marketing material or brochures you could send me on

the FEDWA baffling system?

Thanks again for your help!

Kavya
Kavya P. Kasturi, Environmental Engineer

Eastern Research Group, Inc.

Phone: (703) 633-1701

Fax: (703) 263-7280

kavya.kasturi@erg.com

>>> "Rasmussen, David C (WT)" 04/15/11 3:03 PM >>>

Kavya:

Sorry for the delay.

For flocculating clarifiers I would assume 500 g/d/ft2 hydraulic

loading. I'm also assuming a very low G (less than 40-sec) for this

application. With that assumption I would use our FEDWA baffling system

to flocculate.

Breaking the flows into three ranges -

 Up to 100,000 gpd 100,000 - 500,000

gpd 500,000 - 1,000,000 gpd 

Clarifier size -

 20' diameter 35'

diameter 50' diameter

Cost of mechanism

 $60,000

$80,000 $120,000

Each mechanism drive unit uses a 1/2 hp motor, no other power

consumption.

Anything else?

Dave Rasmussen 

________________________________

From: Kavya Kasturi [mailto:Kavya.Kasturi@erg.com] 

Sent: Friday, April 08, 2011 3:05 PM

To: Rasmussen, David C (WT)

Subject: Re: Vendor request-Solids contact clarifiers

Hi Dave,

I hadn't seen any cost estimates for flocculating clarifiers come

through yet. Do you think you'll still be able to get me some estimates

soon? I really appreciate your help!

Thanks,

Kavya

Kavya P. Kasturi, Environmental Engineer

Eastern Research Group, Inc.

Phone: (703) 633-1701

Fax: (703) 263-7280

kavya.kasturi@erg.com

>>> Rekha Hareendran 3/9/2011 2:17 PM >>>
Hi Dave,

My name is Rekha Hareendran of Eastern Research Group, Inc., a

contractor to the USEPA supporting the development of effluent

guidelines for the steam electric power industry.

As I mentioned during our conversation, we are working on conceptual

level costing of a chemical precipitation wastewater treatment system to

treat FGD (flue gas desulfurization) wastewater from steam electric

power plants. As a part of this project, we are trying to collect cost

information on different components or units of a chemical precipitation

system.

I would really appreciate it if you could provide us the purchase cost,

cost for ancillary equipments and the power consumption for the

following clarifier types over the flow ranges listed below.

-Clarifier Type : Solids contact primary and secondary clarifiers.

-Flow range : 30,000 gpd- 1,000,000 gpd (Please provide cost

estimates for various flow rates in this range). 

If any of this information is considered confidential business

information (CBI), do not send a written response via e-mail. Instead,

please call me or Kavya directly to discuss the details.

Please let me know if you have any further questions. I look forward to

hearing from you. 

-Thanks,

Rekha Hareendran

Phone: (703) 633-1610

Kavya P. Kasturi, 

Phone: (703) 633-1701