# Development of Chemical Precipitation Purchased Equipment Costs: Clarifiers

The following email supports EPA’s development of purchased equipment cost equations for clarifiers by documenting EPA's communication with a ve ndor regarding freight costs for flocculating clarifiers. The same freight cost was a pplied 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 clarifie rs

Thanks Dave! This is great! One (hopefully) final q uestion: can you provide weights for the clarifiers or the cost to s hip 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@siem ens.com> 4/19/2011
2:53 PM >>>

Kavya:

FEDWA brochure attached.

The only other item you would need would be effluen t weirs. Usually made from fiberglass. Figure for budget costs - tank dia meter (ft.) x 3.146 x $50 /ft.

Need anything else?

Dave R

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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 clarifie rs

Hi Dave,

Thanks for much for the information! This will be v ery helpful for our costing effort. I have a couple follow up questions :

Is there any ancillary equipment required for the c larifier 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!

KavyaKavya 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 F EDWA baffling system

to flocculate.

Breaking the flows into three ranges -

Up to 100,000 gpd 100,000 - 500,000 gpd 500,000 - 1,0 00,000 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 o ther 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 clarifie rs

Hi Dave,

I hadn't seen any cost estimates for flocculating c larifiers come through yet. Do you think you'll still be able to g et 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 Gro up, 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 wor king on conceptual level costing of a chemical precipitation wastewate r treatment system to treat FGD (flue gas desulfurization) wastewater fro m steam electric power plants. As a part of this project, we are tr ying to collect cost information on different components or units of a c hemical precipitation
system.

I would really appreciate it if you could provide us the purchase cost, cost for ancillary equipments and the power consump tion for the following clarifier types over the flow ranges list ed below.

-Clarifier Type : Solids contact primary and second ary 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 confidenti al business information (CBI), do not send a written response v ia e-mail. Instead, please call me or Kavya directly to discuss the det ails.

Please let me know if you have any further question s. I look forward to hearing from you.

-Thanks,

Rekha Hareendran Phone: (703) 633-1610

Kavya P. Kasturi, Phone: (703) 633-1701