A Fact Sheet from the Navy on a Cost-Effective and Environmentally Acceptable Process to Treat Sodium Nitrite Wastewater Generated from Marine Steam Boiler Maintenance Operations

Sodium Nitrite (NaNO2) Wastewater Treatment

T. Richard Lee, Ph.D.
(805) 982-1670
DSN 551-1670

Pollution Prevention Technology Development Branch
Pollution Prevention Division
Naval Facilities Engineering Service Center
Port Hueneme, CA

Objective

To Develop a Cost-Effective and Environmentally Acceptable Process to Treat Sodium Nitrite Wastewater Generated from Marine Steam Boiler Maintenance Operations:

Customers: NSYs, SIMAs, NSs & Naval Surface Force

Why Navy?

Benefits

Approach

Completed Bench-Scale Test
100-gallon Capacity
NCEL TN: N-1841

Completed Pilot Plant Test at LBNSY
500-gallon Capacity
Contractor Report

Completed Operational Scale Process Design
600-gallon Transportable

Operational Scale System Fabrication

Field Demonstration and Tech Transfer

Process Block Flow Diagram for the Nitrite Reduction/Metal Precipitation System

See source document.

Sulfamic Acid Reduction Process

See source document.

Figure 3-11. Run 3-1 Nitrate/Nitrile Nitrogen vs Time - See source document.

Run Number: 3-1

sulfamic Acid Addition Time (Hrs): 5
% of Theoretical Sulfamic Acid Addition: 102
Wastewater Batch Volume (L): 1550

N03/N02-N
(Average of On-site and Off-Site Results)

Influent Concentration (mg/L): 150
Effluent Concentration (mg/L): 14
Percent Removal: 91

N02-N: (Off-Site Laboratory Results)

Influent Concentration (mg/L): 130
Effluent Concentration (mg/L): ND
Percent Removal: 100

Sulfamic Acid Parameters:

Feed Concentration (g/L): 50
Volume Added (L): 35
Flow Rate (L/hr): 7

Implementation Plan

Transfer Technology to NAVSSES of NAVSEA for full Implementation of this Process Navy-wide.

Department of the Navy
Naval Surface Warfare Center
Carderock Division

Reply Refer to
9221
Ser 9222/206
Aug 25, 1994

From: Commander, Carderock Division, Naval Surface Warfare Center, Philadelphia, PA 19112-5083
To: Commanding Officer, Naval Facilities Engineering Service Center (ESC-421), Port Hueneme, CA

Subj: WASTEWATER DENITRIFICAITON UNIT

Ref: (a) MTG btwn NFESC (R. Lee)/CDNSWC (J. McGillian, A. Schoepflin) of 11 Aug 94

  1. During reference (a), Carderock Division, Naval Surface Warfare Center (CDNSWC) discussed their capability in providing support for testing and fleetwide implementation of a Denitrification System. Naval Facilities Engineering Service Center (NFESC) representative Dr. R. Lee expressed interest in our capabilities and requested a tasking letter be prepared addressing CDNSWC support during the initial prototype unit construction and testing.

  2. CDNSWC proposed support is outlined below:

    Task

    1. Provide on-site equipment inspection and engineering support for initial unit testing - Funding Req'd-4K
    2. Review operation and maintenance manual and provide comments and concerns - Funding Req'd-2K
    3. Provide general engineering and equipment support - Funding Req'd-2K

      Total 8K

  3. The following are some additional items that CDNSWC can support if requested during initial development:

    1. Develop preliminary Allowance Parts List (APL) data for spare parts-Funding Req'd-4K
    2. Develop Maintenance Requirement Cards (MRC) needed for the system-Funding Req'd-2K


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Last Updated: January 25, 1996