Reuse: a Safe and Effective Way to Save Water
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
A Combined Vermifiltration-Hydroponic System
applied sciences Article A Combined Vermifiltration-Hydroponic System for Swine Wastewater Treatment Kirill Ispolnov 1,*, Luis M. I. Aires 1,Nídia D. Lourenço 2 and Judite S. Vieira 1 1 Laboratory of Separation and Reaction Engineering-Laboratory of Catalysis and Materials (LSRE-LCM), School of Technology and Management (ESTG), Polytechnic Institute of Leiria, 2411-901 Leiria, Portugal; [email protected] (L.M.I.A.); [email protected] (J.S.V.) 2 Applied Molecular Biosciences Unit (UCIBIO)-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology (FCT), NOVA University of Lisbon, 2829-516 Caparica, Portugal; [email protected] * Correspondence: [email protected] Abstract: Intensive swine farming causes strong local environmental impacts by generating ef- fluents rich in solids, organic matter, nitrogen, phosphorus, and pathogenic bacteria. Insufficient treatment of hog farm effluents has been reported for common technologies, and vermifiltration is considered a promising treatment alternative that, however, requires additional processes to remove nitrate and phosphorus. This work aimed to study the use of vermifiltration with a downstream hydroponic culture to treat hog farm effluents. A treatment system comprising a vermifilter and a downstream deep-water culture hydroponic unit was built. The treated effluent was reused to dilute raw wastewater. Electrical conductivity, pH, and changes in BOD5, ammonia, nitrite, nitrate, phosphorus, and coliform bacteria were assessed. Plants were monitored throughout the experiment. Electrical conductivity increased due to vermifiltration; pH stayed within a neutral to mild alkaline range. Vermifiltration removed 83% of BOD5, 99% of ammonia and nitrite, and increased nitrate by Citation: Ispolnov, K.; Aires, L.M.I.; 11%. -
Wastewater Treatment: Overview and Background
Wastewater Treatment: Overview and Background Claudia Copeland Specialist in Resources and Environmental Policy October 30, 2014 Congressional Research Service 7-5700 www.crs.gov 98-323 Wastewater Treatment: Overview and Background Summary The Clean Water Act prescribes performance levels to be attained by municipal sewage treatment plants in order to prevent the discharge of harmful wastes into surface waters. The act also provides financial assistance so that communities can construct treatment facilities to comply with the law. The availability of funding for this purpose continues to be a major concern of states and local governments. This report provides background on municipal wastewater treatment issues, federal treatment requirements and funding, and recent legislative activity. Meeting the nation’s wastewater infrastructure needs efficiently and effectively is likely to remain an issue of considerable interest to policymakers. Congressional Research Service Wastewater Treatment: Overview and Background Contents Introduction ...................................................................................................................................... 1 Federal Aid for Wastewater Treatment ............................................................................................ 1 How the SRF Works .................................................................................................................. 2 Other Federal Assistance .......................................................................................................... -
The Role of Water Reclamation in Water Resources Management in the 21St Century
THE ROLE OF WATER RECLAMATION IN WATER RESOURCES MANAGEMENT IN THE 21ST CENTURY K. Esposito1*, R. Tsuchihashi2, J. Anderson1, J. Selstrom3 1*: Metcalf & Eddy, 60 East 42nd Street, 43rd Floor, New York, NY 10165 2: Metcalf & Eddy, 719 2nd Street, Suite 11, Davis, CA 95616 3: Metcalf & Eddy, 2751 Prosperity Ave Suite 200, Fairfax, VA 22031 ABSTRACT In recognition of the existing and impending stress to traditional water supply, water planners must look beyond structural developments and interbasin water transfers to secure supply into the future. In this process, it is becoming evident that various issues related to water must be integrated into a whole system approach, including water supply, water use, wastewater treatment, stormwater management, and management of surrounding water environment. In bringing disparate water assets together, alternatives to traditional water supply should arise. Integrated water resources management can provide a realistic framework for examining the feasibility of water reuse. This paper evaluates how water reuse can become a strategic alternative in water resources management. The key challenges that limit water reclamation as one of the key elements in integrated water resources management scheme are discussed, including limitations with typical centralized wastewater treatment systems and public health protection, particularly the implications of trace contaminants. The key considerations to address these challenges are presented including (1) selection of appropriate treatment processes and reuse applications, (2) scientific and engineering solutions to emerging concerns, (3) consideration for cost effective and sustainable system, and (4) public acceptance. Recent water reclamation projects are presented to illustrate the response of the engineering community to the challenges of making water reclamation and reuse a real and sustainable solution to water supply system management planning. -
Community Wastewater Treatment by Using Vermifiltration Technique
International Journal of Engineering Research and Technology. ISSN 0974-3154 Volume 10, Number 1 (2017) © International Research Publication House http://www.irphouse.com Community Wastewater Treatment By Using Vermifiltration Technique Author 1 Nandini Misal Assistant Professor,Department of Civil Engineering,D.Y .Patil College of Engineering and Technology, KasabaBawada,Kolhapur Author 2 Mr.NitishA.Mohite Assistant Professor,Department of Civil Engineering,D.Y .Patil College of Engineering and Technology, KasabaBawada,Kolhapur Abstract cowdung,clay and loaded with vermis-Eisenia fetida Now-a-days many developing countries cannot afford the earthworms. wastewater treatment processes as they are costly,need more The wastewater is allowed to pass through the filter,the space to construct the treatment plant and in addition use of earthworms consume and metabolise oils,fats and other chemicals for the treatment.They need some more options at compounds.The water percolating through is collected in low cost,space saving and ecofriendly another container.Earlier report of Sinha et.al(2008) have techniques.Vermifiltration is one of the simple,low proved that the body of earthworms works as a “biofilter”and cost,ecofriendly,chemical free technique used to treat the the body walls absorbs the solids from wastewater.It has been canteen wastewater using the Eisenia fetida earthworm observed that the earthworms are potentially capable of species.The earthworms are potentially capable of digesting digesting the waste organic material and remove the 5days the waste organic material and reduce it through ingestion.It is BOD5 near about 90%,COD by 85-90%, TS by 90-95%,TDS considered to be an innovative ecofriendly technology that by 95%,TSS by 95-98%. -
Glossary of Wastewater Terms
Glossary of Wastewater Terms Activated Sludge Sludge that has undergone flocculation forming a bacterial culture typically carried out in tanks. Can be extended with aeration. Advanced Primary Treatment The use of special additives to raw wastewater to cause flocculation or clumping to help settling before the primary treatment such as screening. Advanced Wastewater Treatment Any advanced process used above and beyond the defacto typical minimum primary and secondary wastewater treatment. Aerobic Wastewater Treatment Oxygen dependent wastewater treatment requiring the presence of oxygen for aerobic bacterial breakdown of waste. Alkalinity A measure of a substances ability to neutralize acid. Water containing carbonates, bicarbonates, hydroxides, and occasionally borates, silicates, and phosphates can be alkaline. Alkaline substances have a pH value over 7 Anaerobic Wastewater Treatment Wastewater treatment in the absence of oxygen, anaerobic bacteria breakdown waste. Bacteria Single cell microscopic living organisms lacking chlorophyll, which digest many organic and inorganic substances. An essential part of the ecosystem including within human beings. Bioengineering The use of living plants as part of the system, be it wastewater treatment, erosion control, water polishing, habitat repair and on. Biosolids Rich organic material leftover from aerobic wastewater treatment, essentially dewatered sludge that can be re-used. BOD - Biochemical Oxygen Demand Since oxygen is required in the breakdown or decomposition process of wastewater, its "demand" or BOD, is a measure of the concentration of organics in the wastewater. Clarifier A piece of wastewater treatment equipment used to "clarify" the wastewater, usually some sort of holding tank that allows settling. Used when solids have a specific gravity greater than 1. -
Sustainable Action Plan for County Operations 4890-012418 RTP-HT Table of Contents
REPORT CARD: FY 2016/2017 Sustainable Action Plan for County Operations 4890-012418 RTP-HT Table of contents Table of contents . 3 . Report card: FY 2016/2017 . 4 . How to use this report . 4 Progress summary . 5. Chapter 1 Chapter 4 Chapter 7 Minimizing the Carbon Footprint Alternative Fuel Waste of County Operations 6 Vehicles 12 Reduction 18 Noteworthy accomplishments . 6 Noteworthy accomplishments . 12 Noteworthy accomplishments . 18 Benefits & Performance . 7 Benefits & Performance . 13 Benefits & Performance . 19 Chapter 2 Chapter 5 Chapter 8 Renewable Energy & Energy Water Conservation Green Efficiency 8 & Management 14 Purchasing 20 Noteworthy accomplishments . 8 Noteworthy accomplishments . 14 Noteworthy accomplishments . 20 Benefits & Performance . 9 Benefits & Performance . 15 Benefits & Performance . 21 Chapter 3 Chapter 6 Chapter 9 Green Land Conservation Health & Building 10 & Management 16 Wellness 22 Noteworthy accomplishments . 10 Noteworthy accomplishments . 16 Noteworthy accomplishments . 22 Benefits & Performance . 11 Benefits & Performance . 17 Benefits & Performance . 23 Glossary . 24 References . 26 . Sustainable Action Plan for County Operations • Report Card: FY 2016/2017 | 3 REPORT CARD: FY 2016/2017 Sustainable Action Plan for County Operations n May 17, 2014, the Pima County Board of Supervisors adopted the 2014 Sustainable O Action Plan for County Operations . This plan seeks to achieve a “balance between economic development, social well-being and environmental protection to ensure the needs of current generations can be met without compromising the ability of future generations to meet their own needs .” Measuring progress is crucial to the success of Pima County’s sustainability efforts . The purpose of this report card is to inform County decision makers and the broader community about Pima Construction workers restore and preserve the Pima County’s progress toward meeting the goals and County Historic Courthouse . -
Reclaiming Resources: Reducing Water Consumption Through Reuse
Reclaiming Resources: Reducing Water Consumption through Reuse Although water reuse can be energy-intensive, its use is increasing across numerous industries By: Al Goodman Al Goodman is a principal with 42 years of experience serving clients in water reuse projects at the Louisville, Ky., office of CDM Smith (Boston). Communities and industries around the world are turning to water reuse. The drivers are varied: the need to augment strained water supplies, reduce nutrients in treated effluent, maintain ecological balance, use the most energy-efficient water sources, and reduce cost of purchased and treated water. The major driver is water scarcity in arid and semi-arid regions, though some regions of the world that are not considered to be water-scarce are implementing water reuse. Ecological drivers are becoming more important in evaluating reuse as part of a response to rigorous and costly requirements to reduce or remove nutrients (mainly nitrogen and phosphorus) from discharges to surface waters. Though water reuse can be energy-intensive, depending on the level of treatment required, only a full life-cycle analysis can reveal whether overall resource costs are greater than or less than alternative water supplies. Municipalities are implementing various types of urban water reuse and turning to industry and agriculture as potential customers of reclaimed water. Categories of water reuse applications are presented in the table. This article focuses on considerations relevant for municipal and industrial reuse. For more information on the full range of categories of reuse, refer to the U.S. Environmental Protection Agency’s Guidelines for Water Reuse (2012; http://nepis.epa.gov/Adobe/ PDF/P100FS7K.pdf). -
Quantifying the Potential of Renewable Natural Gas to Support a Reformed Energy Landscape: Estimates for New York State
energies Review Quantifying the Potential of Renewable Natural Gas to Support a Reformed Energy Landscape: Estimates for New York State Stephanie Taboada 1,2, Lori Clark 2,3, Jake Lindberg 1,2, David J. Tonjes 2,3,4 and Devinder Mahajan 1,2,* 1 Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY 11794, USA; [email protected] (S.T.); [email protected] (J.L.) 2 Institute of Gas Innovation and Technology, Advanced Energy Research and Technology, Stony Brook, NY 11794, USA; [email protected] (L.C.); [email protected] (D.J.T.) 3 Department of Technology and Society, Stony Brook University, 100 Nicolls Rd, Stony Brook, NY 11794, USA 4 Waste Data and Analysis Center, Stony Brook University, 100 Nicolls Rd, Stony Brook, NY 11794, USA * Correspondence: [email protected] Abstract: Public attention to climate change challenges our locked-in fossil fuel-dependent energy sector. Natural gas is replacing other fossil fuels in our energy mix. One way to reduce the greenhouse gas (GHG) impact of fossil natural gas is to replace it with renewable natural gas (RNG). The benefits of utilizing RNG are that it has no climate change impact when combusted and utilized in the same applications as fossil natural gas. RNG can be injected into the gas grid, used as a transportation fuel, or used for heating and electricity generation. Less common applications include utilizing RNG to produce chemicals, such as methanol, dimethyl ether, and ammonia. The GHG impact should be quantified before committing to RNG. This study quantifies the potential production of biogas (i.e., Citation: Taboada, S.; Clark, L.; the precursor to RNG) and RNG from agricultural and waste sources in New York State (NYS). -
Water Reclamation for Direct Re-Use in Urban and Industrial Applications in South Africa and Its Projected Impact Upon Water Demand
Water Reclamation for Direct Re-Use in Urban and Industrial Applications in South Africa and its Projected Impact Upon Water Demand A Grobicki • B Cohen Report to the Water Research Commission by Abbott Grobicki (Pty) Ltd r WRC Report No KV118/99 -^r -^r -^r *^^ Disclaimer This report emanates from a project financed by ihe Waler Research Commission (WRC) and is approved for publication. Approval docs not signify that the contents necessarily reflect the views and policies of the WRC or the members of the project steering committee, nor does mention of trade names or commercial products constitute endorsement or recommendation tor use. Vrywaring Hierdie verslag spruit voort uit 'n navorsingsprojek wat deur die Waternavorsingskommissic (WNK) gefinansier is en goedgekeur is vir publikasie. Goedkeuring beteken nie noodwendig dat die inhoud die sicning en beleid van die WNK of die lede van die projek-loodskomitee weerspieel nie, of dat melding van handelsname of -ware deur die WNK vir gebruik goedgekeur n( aanbeveel word nie. WATER RECLAMATION FOR DIRECT RE-USE IN URBAN AND INDUSTRIAL APPLICATIONS IN SOUTH AFRICA, AND ITS PROJECTED IMPACT UPON WATER DEMAND A STUDY FOR THE WATER RESEARCH COMMISSION BY DR ANIA GROBICKI AND DR BRETT COHEN Abbott Grobicki (Pty) Ltd Kimberley House 34 Shortmarket Street 8001 Cape Town Tel: (021) 424-3892, Fax: (021) 424-3895 email: [email protected] OCTOBER 1998 ii EXECUTIVE SUMMARY Water reclamation, or the direct use of treated sewage effluent to replace a proportion of the fresh water demand, is regarded as a non-conventional approach to water management. However, water reclamation is becoming increasingly common internationally, especially in countries which have water shortages similar to that in South Africa. -
Technical Support Document for Industrial Wastewater Treatment: Final Rule for Mandatory Reporting of Greenhouse Gases
TECHNICAL SUPPORT DOCUMENT FOR INDUSTRIAL WASTEWATER TREATMENT: FINAL RULE FOR MANDATORY REPORTING OF GREENHOUSE GASES Climate Change Division Office of Atmospheric Programs U.S. Environmental Protection Agency June 2010 CONTENTS Page 1. INTRODUCTION AND BACKGROUND ..................................................................................1-1 2. INDUSTRY DESCRIPTION ...................................................................................................2-1 2.1 Industrial Wastewater Treatment.........................................................................2-1 2.2 Reporting Rule Applicability...............................................................................2-3 2.2.1 Processes Included in the Reporting Rule ...............................................2-3 2.2.2 Industries Included in the Reporting Rule ...............................................2-4 3. EMISSION ESTIMATES .......................................................................................................3-1 3.1 Pulp and Paper Mills............................................................................................3-1 3.2 Food Processing Facilities ...................................................................................3-2 3.3 Ethanol Production Facilities...............................................................................3-5 3.4 Petroleum Refineries............................................................................................3-6 3.5 Summary..............................................................................................................3-7 -
Wastewater Technology Fact Sheet: High-Efficiency Toilets
United States Office of Water EPA 832-F-00-047 Environmental Protection Washington, D.C. September 2000 Agency Wastewater Technology Fact Sheet High-Efficiency Toilets INTRODUCTION ENVIRONMENTAL, PUBLIC, AND CONSUMER BENEFITS In 1992, Congress passed legislation requiring that all toilets sold in the United States meet a new Studies indicate that converting to water efficient water conservation standard of 1.6 gallons per flush toilets, showers and clothes washers, results in a (gpf). By 1992, in response to the growing need for household water savings of about 30% compared to conservation of drinking water supply resources, a conventional fixtures. A change to high-efficiency number of metropolitan regions and 17 states had toilets alone, reduces toilet water use by over 50% already instituted water conservation programs and indoor water use by an average of 16%. This which included high-efficiency toilet requirements. translates into a savings of 15,000 to 20,000 gallons per year for a family of four. Furthermore, more A national water use standard for a high-efficiency efficient plumbing products result in lower toilet was necessary to address the problems with wastewater flow and increase the available capacity different states and communities having established of sewage treatment plants and onsite wastewater different toilet water use standards. A national disposal systems. standard eliminated the need for plumbing fixture firms to manufacture, stock, and deliver different The general public also benefits directly from water products, and the difficulty for states in preventing conservation measures. Practiced on a wide basis, the importation of high-water-use fixtures. efficient use of water resources helps reduce the potential need during drought periods for water High efficiency designs have significantly improved restrictions such as bans on lawn watering and since they were first introduced. -
Reclaimed Municipal Wastewater for the Production of Bioenergy in The
Reclaimed Municipal Wastewater for the Production of Bioenergy in the United States — A Resource Assessment May Wu,* Miae Ha, and Yi-wen Chiu Argonne National Laboratory, Argonne, IL *[email protected] ABSTRACT The production of bioenergy requires a significant amount of freshwater to be withdrawn and consumed to irrigate conventional crops and be used in the conversion process in the biorefinery. Reclaimed wastewater has long been seen as an alternative to water and nutrient sources because it contains low levels of nitrogen and phosphorus. In drought-prone areas in the Western United States, reclaimed wastewater has been widely used to irrigate agricultural crops. The key issue in developing bioenergy feedstock is to consider the reuse of reclaimed wastewater to reduce the need for freshwater. This study assesses the large-scale potential for using reclaimed wastewater as the resource for biofuel feedstock production in the United States. Geospatial analysis was applied to estimate reuse potential at the county level. Technical and infrastructural challenges are highlighted. KEY WORDS: Reclaimed municipal wastewater, effluent, discharge, irrigation, bioenergy INTRODUCTION It is anticipated that the demand for freshwater for producing food and energy and meeting basic human needs will continue to grow as the world’s population increases and people’s economic status improves. Enabling the long-term viability of the energy system thus requires the development of energy resources that protect natural resources and achieve environmental sustainability. The production of bioenergy (particularly with regard to conventional starch- based or oil-seed-based feedstock, such as corn or soybeans) requires a significant amount of freshwater to be withdrawn and consumed for irrigation (USDA 2008).