Stormwater Pollution Management at a Foundry Site
James A. Bachhuber, David Sipple
Abstract

A Case Study of Fish Processing Plant Wastewater Treatment
Miroslav Colic, Wade Morse, Jason Hicks, Ariel Lechter, Jan D. Miller
Abstract

Wet Air Oxidation of Difficult to Treat Pharmaceutical Waste Streams
Bryan Kumfer, Dick Lehmann
Abstract

Stephen W. Maloney^1*, Emina Atikovic², Makram T. Suidan²

¹U.S. Army Engineer Research and Development Center.
²Department of Civil and Environmental Engineering, University of Cincinnati.


Abstract

Perchlorate is an oxidant widely used in propellants such as solid rocket motors, and in commercial fireworks and road flares.  It has recently been introduced in new munitions formulations.  An Air Force formulation pairs perchlorate with RDX, and numerous Army formulations use it in conjunction with RDX as well as other new energetic chemicals. Perchlorate treatment using anoxic processes has been applied to groundwaters.  Treatment of munitions wastewater containing RDX as well as other high explosives by anaerobic bacteria is an emerging technology.  This paper evaluates the effects of introducing perchlorate into the anaerobic treatment of munitions wastewater containing RDX, TNT and other nitrobodies.  Anaerobic bacteria were able to treat both the perchlorate and munitions compounds commingled together in a single reactor. Acclimation times can be significant, and some consortia could not initially degrade the perchlorate.

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HEPES Removal by OHP Treatment

Kevin Huang* and Steven Yuan

¹FMC Corporation, 12000 Bay Area Blvd. Pasadena, TX 77507.


Abstract

HEPES is widely used in biochemistry and molecular biology research studies and applications as a buffer solution. However, it is difficult to remove from wastewater stream at the conclusion of work. FMC’s patented OHP technology was proven in this study to be effective and efficient for HEPES treatment. The OHP process is based on Fenton’s reagents. An experimental design methodology was employed to investigate the optimal conditions for total organic carbon (TOC) reduction and reagent efficiency. The TOC was reduced up to 98% and an efficiency of 80% was obtained in H2O2 basis. The results showed that in the current test ranges, the TOC reduction will increase with any parameters except pH. The reagent efficiency was dramatically improved by the increased temperatures, but adversely impacted by the increase in hydrogen peroxide volumes. There is a good correlation between the TOC levels and the biochemical oxygen demand (BOD) numbers.

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Using an Aeration Tank as a Bioscrubber for Odor and VOC Control

Kevin D. Torrens¹* and Frank Senske²

¹Brown and Caldwell, 110 Commerce Dr. Allendale, New Jersey 07401.
²Spectraserv, Inc.


Abstract

An odor and air emissions control and wastewater treatment system upgrade was developed at a facility that provides dewatering of liquid residuals.  The treatment system upgrade uses existing tankage as a biological reactor for odor and air emissions control from the site’s dewatering building and for reduction of biochemical oxygen demand (BOD) that is currently discharged to the sewer.  The aeration tank operates as a bioscrubber and removes contaminants from the building air through a combination of chemical and biological processes. Stack testing results indicated the system was effective at reducing emissions and that it complied with air permit limits for ammonia, hydrogen sulfide, VOCs and particulates. Odor modeling results indicate the dilution to threshold odor intensity (D/T) from the aeration tank for ammonia and hydrogen sulfide will be less than 5, thus obviating the need for additional controls.

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Stormwater Pollution Management at a Foundry Site

James A. Bachhuber¹* and David Sipple²

¹Earth Tech Inc. 1210 Fourier Drive, Madison WI 53717.
²Neenah Foundry, 2121 Brooks Street, Neenah, WI 54956.


Abstract

Stormwater pollution from heavy manufacturing sites is generally regulated under federal and state regulations.  Neenah Foundry, Neenah, Wisconsin was found to be in violation of the state guidelines (based on USEPA benchmarks) for total suspended solids, aluminum, nitrate/nitrite, copper, and zinc concentrations. Through discussions with the Wisconsin Department of Natural Resources (WDNR), the manufacturer agreed on a course of action that included conducting event based monitoring at an outfall (recording rain and flow gauge; and automatic event sampling. A total of nine events were monitored in the fall of 2004 and spring of 2005.  The monitoring data was also used to calibrate the urban pollution model: WinSLAMM (Windows Source Loading and Management Model, see www.winslamm.com).  The model was used to evaluate various pollution control approaches. Based on the results of the monitoring and modeling, proprietary and non-proprietary BMPs were evaluated for the three storm sewer outfalls.
 
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A Case Study of Fish Processing Plant Wastewater Treatment

Miroslav Colic¹*, Wade Morse¹, Jason Hicks¹, Ariel Lechter¹, Jan D. Miller²

¹Clean Water Technology, Inc., 151 W 135th Street, Los Angeles, CA 90061.
²University of Utah, Salt Lake City, UT 84112.


Abstract

This presentation describes the full scale installation of a wastewater treatment system at the Ocean Gold Seafood (“OCS”) plant in Westport, Washington, USA.  Local Government requires that fish processors remove total suspended solids (TSS), fats, oil and grease (FOGs) and colloidal materials almost completely in order to allow for efficient disinfection.  Clean Water Technology, Inc. (“CWT”) and OCS teams designed the system with an underground equalization tank, 1/8 inch rotating drum screens, flocculation – flotation (“GEM System”) and chlorination–dechlorination.  Hybrid centrifugal–dissolved air flocculation–flotation (the GEM System), is the key component of the wastewater treatment plant.  TSS and FOGs are almost completely removed to less than 20 mg/l and 1 mg/l, respectively.  This allowed for successful breakpoint chlorination–dechlorination and fecal coliform removal (99.995%).  Novel ultrahigh molecular weight polyacrylamide flocculants used in the process enabled TSS and FOG removal even at high salinity.

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Wet Air Oxidation of Difficult to Treat Pharmaceutical Waste Streams

Bryan Kumfer* and Dick Lehmann

¹Siemens Water Technologies, 301 W. Military Rd. Rothschild, WI 54474.


Abstract

Wet air oxidation (WAO) is a technology that can be used to treat wastewaters from the pharmaceutical industry.  A test program was carried out to determine the treatment of pharmaceutical wastewaters that had a high chemical oxygen demand (COD) and were poorly biodegradable.  The testing included batch style bench scale testing, continuous flow pilot testing, and a biological treatment study of the WAO treated effluent.  Several mixtures of up to 12 different wastewater streams were tested.  Testing indicated that a COD reduction of the mixed wastewater of up to 71% can be achieved in the continuous flow system operating at 290 °C with a 90 minute time at temperature.  COD reduction varied with different types of wastewaters.  The effluents from the wet air oxidation system were generally biodegradable and could be further treated using a conventional biological treatment system.  After bench scale biological treatment, the treated wastewater had a COD and BOD concentration of less than 500 mg/L and 50 mg/L, respectively.

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