RESEARCH: WASTEWATER & WASTEWATER ENGINEERING

Demonstration Study of High-Rate Flotation/Contactor Treatment of Raw Wastewater

SPONSOR:
R.M. Towill Corporation

PROJECT PERIOD:
03/01/2016-02/28/2017

ABSTRACT:
The Honouliuli Wastewater Treatment Plant (HWWTP) is the second largest treatment plant in Hawaii. At HWWTP, an average of 26 million gallons per day (MGD) of sewage is treated via primary clarifiers and then 13 MGD is further treated
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Wastewater Treatment for Point Source Processing and Reuse

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
03/01/2015-02/29/2017

ABSTRACT:
Water-limited “island” communities face mounting demands on water supply such as increased consumption, lower rainfall, decreased groundwater recharge, and redirection of rainfall over natural watersheds – all of which stress pre-existing ground
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Temporal and spatial effects of sewage outfalls on the ecosystem health of coastal waters offshore of Honolulu

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
03/01/2014-02/29/2016

ABSTRACT:

The Sand Island Wastewater Treatment Plant and the Honouliuli Wastewater Treatment Plant are primary treatment systems that treat effluents to be discharged a few kilometers offshore of
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Biomonitoring of the Marine Communities Near the City’s Ocean Sewage Outfalls off O’ahu, Hawai’i

SPONSOR:
City and County of Honolulu

PROJECT PERIOD:
2013

ABSTRACT:
A survey of the capitellids from the Hawaiian Islands has yielded 16 species in seven genera, most represent new records and two species are newly described, Notodasus dasybranchoides sp. nov. and Scyphoproctus edmondsoni sp. nov. The species Capitella
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Engineering Palm Peroxidases for Wastewater Treatment and Water Pollution Monitoring

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
3/1/2013 – 2/28/2014

ABSTRACT:

Introduction:
Horseradish peroxidase (HRP) is a widely used enzyme in water pollution monitoring and wastewater treatment. However, its poor stability has limited its applications, particularly
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Biological and Sediment Monitoring Program

SPONSOR:
City and County of Honolulu

PROJECT PERIOD:
1/01/12 – 6/30/14

ABSTRACT:
The University of Hawaii Water Resources Research Center (WRRC) will conduct scientific monitoring of benthic fauna surrounding ocean disposal outlets of effluent from City and County of Honolulu (City) wastewater treatment
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Fate and Transport of Pharmaceutically Active Compounds in Simulated Bank Filtration System

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
3/1/2012 – 2/28/2013

ABSTRACT:
Riverbank filtration (RBF) represents a natural filtration technique that has been used for providing drinking water for more than a century in Europe and half a
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Sand Island Wastewater Treatment Plant Pilot UV Unit Testing

SPONSOR:
Trojan Technologies, Inc.

PROJECT PERIOD:
02/01/07 – 01/31/09 (Phase IV)

ABSTRACT:

The primary objectives of the UV disinfection pilot tests were to assess the feasibility of the UV disinfection and establish the appropriate design parameters for a full-scale UV disinfection facility to achieve the required
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Sand Island Wastewater Treatment Plant Pilot UV Unit Testing

SPONSOR:
Trojan Technologies, Inc.

PROJECT PERIOD:
02/01/07 – 01/31/09 (Phase IV)

ABSTRACT:
The primary objectives of the UV disinfection pilot tests are to assess the feasibility of the UV disinfection and establish the appropriate design parameters for a full-scale UV disinfection facility to achieve the required enterococci
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A Five-Year Biological and Sediment Monitoring Program on Specific Marine Communities Near the City’s Ocean Sewer Outfalls.

SPONSOR:
City of Honolulu, Department of Environmental Services

PROJECT PERIOD:
01/01/07 – 09/30/07

ABSTRACT:
This project is a continuation of WRRC’s long term biological monitoring program at Oahu’s wastewater outfalls. This project has been ongoing since the 1980’s. Its purpose is to try to detect any changes
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Investigation into Effect of Soil Moisture Depletion on Vegetable Crop Uptake of Microcontaminants Under Recycled Water Irrigation

SPONSOR:
U.S. Department of Agriculture

PROJECT PERIOD:
01/01/11 – 12/31/13

ABSTRACT:
The long-term goal of this study was to determine the effects of soil moisture stress on the uptake of microcontaminants of potential human health concern found in wastewater irrigation by food crops generally eaten fresh. A
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Sand Island Wastewater Treatment Plant Pilot UV Unit Testing

SPONSOR:
Trojan Technologies, Inc.

PROJECT PERIOD:
02/01/07 – 01/31/09 (Phase IV)

ABSTRACT:
The primary objectives of the UV disinfection pilot tests were to assess the feasibility of the UV disinfection and establish the appropriate design parameters for a full-scale UV disinfection facility to achieve the required enterococci
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Evaluation of Hydrogen Production Mechanisms and Microflora in Landfill Microcosms

SPONSOR:
North Carolina State University

PROJECT PERIOD:
08/01/06 – 01/01/08

ABSTRACT:

This research was a collaboration involving personnel and other resources from North Carolina State University that were utilized in experiments that were conducted at the University of Hawaii. The scope of work that was conducted
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Identification and Control of Membrane Bioreactor Biofouling Organisms Using Genetic Fingerprinting – Year 2

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program
USGS

PROJECT PERIOD:
03/01/06 – 02/29/08

ABSTRACT:
Membrane bioreactors (MBRs) are a relatively new wastewater treatment technology which combines several typical unit operations (primary sedimentation, activated sludge aeration and sedimentation, and tertiary media filtration) into a
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Performance of an On-Site Wastewater Treatment System

SPONSOR:
International Wastewater Technologies

PROJECT PERIOD:
11/01/06 – 06/30/07

ABSTRACT:
Surface water harvesting is a conservation method used to augment groundwater supply. The method is a form of Aquifer Storage and Recovery (ASR), which involves capturing excess water during wet periods and injecting that captured water into
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Benthic Infauna Community Structure in Reef Sediments Adjacent to Sewage Outfalls at the Agana and North District Treatment Plants, Guam, Mariana Islands

SPONSOR:
Guam Water Works Dept.

PROJECT PERIOD:
04/01/05 – 02/28/07

ABSTRACT:
The benthic invertebrate community structure was characterized at outfall sites at Agana and Northern District Treatment Plant (NDTP) on Guam in July 2001. The intent was to characterize the infaunal species present and their abundance at
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An Evaluation of Factors Affecting the Transport of Pharmaceutical Compounds and Pathogens in Selected Hawaii Soils for Land Application of Wastewater

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
3/1/03 – 2/28/06

ABSTRACT:
Mobility of viruses, bacteria, and other wastewater contaminants (including hormones) in subsurface media and their arrival in groundwater can have public health as well as aesthetic concerns. The sources of
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Honolulu Membrane Bioreactor Pilot Study

SPONSOR:
WateReuse Foundation, Alexandria, Virginia

PROJECT PERIOD:
07/02/03 – 12/31/04

ABSTRACT:
Membrane bioreactors (MBRs) are a relatively new wastewater treatment technology which promise exceptional treatment efficiency and a reduced footprint compared to conventional treatment process trains. MBRs may be particularly well suited to situations in which water
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Removal of Nitrogenous Aquaculture Wastes by a Wind-Powered Reverse Osmosis System, Year 2

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
3/1/2002 – 2/28/2005

ABSTRACT:
Advanced treatment must be provided to wastewater used for freshwater aquaculture in order to meet effluent water quality standards. Because such treatment can be expensive and because freshwater is also
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Removal of Nitrogenous Aquaculture Wastes by a Wind Powered Reverse Osmosis System

SPONSOR:
U.S. Geological Survey

PROJECT PERIOD:
Year 1: 03/01/01 – 02/28/02
Year 2: 03/02/02 – 02/28/03

ABSTRACT:
Tilapia fish are a major source of protein around the world. In the United States, tilapia farming is the fastest growing segment of aquaculture, and over the last year, domestic
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Optimize Aeration, Secondary Clarifier and Disinfection Processes

SPONSOR:
National Institute for Water Resources, Water Resources Research Institute Program

PROJECT PERIOD:
9/1/00 – 12/31/03

ABSTRACT:
The U.S. Army’s Schofield Barracks Wastewater Treatment Plant has a history of not consistently meeting the microbial requirements for discharge into the Waialua Sugar Company irrigation system. The disinfection challenge
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Sand Island Wastewater Treatment Plant Sludge Characterization Study

SPONSOR:
R.M. Towill Corporation

PROJECT PERIOD:
09/01/00 – 03/31/01

ABSTRACT:
The Sand Island Wastewater Treatment Plant (SIWWTP) is the largest treatment plant in Hawaii. At SIWWTP, an average of over 70 million gallons per day of sewage is treated to the enhanced primary level via flotation clarifiers
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Rapid Response: Application of a qPCR-based Test for Enterococci as a Rapid Beach Management Tool in HawaiiRapid Response: Application of a qPCR-based Test for Enterococci as a Rapid Beach Management Tool in Hawaii

SPONSOR:
Hawaii Department of Health, Clean Water Branch

PROJECT PERIOD:
2017

ABSTRACT:
Over eight million tourists visit Hawaii every year. Hawaii is ranked third in the US for number of beach visitors and Hawaii’s beaches see heavy use year round. Therefore microbial beach water quality is extremely
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Demonstration Study of High-Rate Flotation/Contactor Treatment of Raw Wastewater

SPONSOR:
R.M. Towill Corporation

PROJECT PERIOD:
03/01/2016-02/28/2017

ABSTRACT:
The Honouliuli Wastewater Treatment Plant (HWWTP) is the second largest treatment plant in Hawaii. At HWWTP, an average of 26 million gallons per day (MGD) of sewage is treated via primary clarifiers and then 13 MGD is further treated
Read More