Asian games fresher in Beijing, China - Case Study

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  A notable Taiwanese scholar discovered the key to growing eel in Taiwan: good water quality. Only Japan had been capable of raising eel in Asia. He reported, `The number one source of pond pollution is the bottom of the ponds where animal wastes and left-over feed accummulate and deplete oxygen.` This scholar raises Anguilla japonica eels at his research institute’s 2 hectare farm at stocking densities of 30,000 per 0.2 ha. ponds. He uses AIRE-O2® aerators because they `use a propeller to inject air...

• Study on sewage sludge gasification

  Oct. 13, 2007

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• Evaluation of Compliance Strategies to Meet Stringent Effluent Copper Limits

  Oct. 21, 2006

  The objective of this evaluation was to determine the optimal means for the City of Puyallup, Washington to comply with stringent wastewater treatment plant effluent copper limits through bench and pilot testing of possible approaches. A source evaluation determined that corrosion of domestic and commercial plumbing was the primary source of copper in wastewater entering Puyallup’s Water Pollution Control Plant (WPCP).Testing conducted to evaluate compliance strategies with effluent copper limits included: Condu...

• HD Q-PAC® Bio-media Eliminates Odors at Mt. Dora, Florida Water Reclamation Plant. System Very ...

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• Understanding Flows Through the Remnant Colorado River Delta - Recommendations for Streamgage Sites ...

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• Estimating and Projecting Impervious Cover in the Southeastern United States

  May 1, 2005

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• Recovery of Precious Metal Catalysts - A New Process Using Supercritical Water Oxidation

  Jan. 1, 2002

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• Sludge Disposal that’s Sustainable, Safe and Economically Viable

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• Japanese Organics Recycling Association Formed

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• High VOC Loadings in Biofilters - Petroleum and Industrial Applications

  Jun. 18, 2000

  ABSTRACTMore cost effective alternate technologies are needed to meet the demands of existing and upcoming Federal air regulations. Bio-Reaction Industries, Inc. (BRI) has developed a patented, modular, high-rate, vapor-phase biofilter that has provided such a solution for a major oil company for the past four years. This compact system has adsorbed and digested high VOC surge concentrations (over 90,000 PPMV) from a glycol dehydrator in a high CO2, corrosive environment. System design changes, operation/maintenanc...

• Fires at Composting Facilities: Causes and Conditions

  Jan. 1, 2000

  The subject of fires at composting facilities is a bad news/good news situation. The bad news is that fires are more common than we realize. Ask a group of facility operators if they have had to deal with a fire, and the majority will quietly admit they have. The good news is that we don’t realize that fires are fairly common at composting facilities. Most are neither frequent nor destructive enough to attract attention beyond the facility gates, with notable exceptions. Generally, operators are recognizing and...

• Water Industry on the Eco Wave?

  Jan. 1, 2000

  A wave of privatization is rolling through the water industry – at the environment‘s expense? In order to provide an answer to this question, the Environmental-Rating agency oekom research AG, Munich, put a number of water supply companies and manufacturers of water appliances to the environmental test. In results published today, oekom identifies the British water supplier Severn Trent as the environmental leader of the water supply group with a B grade in the overall Environmental-Rating. The Austrian water...

• Management of Waste Generated by Mobile Offshore Drilling Units in the Timor Sea

  Jan. 1, 2000

  Woodside Energy Ltd is recognised as a major Australian resource company committed to quality and protecting the environment. Woodside actively manages their exploration activities so as to avoid environmental impacts. As part of their Timor Sea exploration activities, they produce a significant quantity of waste that includes a hazardous and industrial non-toxic component. In recognition of the potential pollution problem that improperly managed waste can produce, Woodside operates under a comprehensive Ocean...

• Baseline Projections of Selected Waste Streams

  Jan. 1, 1999

  Abstract Waste represents an enormous loss of resources both in the form of materials and energy. Indeed, quantities of waste can be seen as an indicator of the material efficiency of society. Waste generation is increasing in the European Union, and amounted to about 3.5 tonnes of solid waste per person in 1995 (excluding agricultural waste) 1 Excessive quantities of waste result from: inefficient production processes low durability of goods unsustainable consumption patterns. Solid waste is also increasingly...

• Worldwide Coastal and Oceans Woes Continue.

  Jan. 1, 1999

  `The oceans are in trouble and so are we,` oceanographer Sylvia Earle, National Geographic explorer in residence and researcher for the Smithsonian, was quoted as saying in an article on the web by Seth Borenstein writing for the Philadelphia Inquirer and San Jose Mercury News Washington Bureaus. Citing a study by the Harvard Medical School`s Center for Health and the Global Environment covering 1976 to 1996, Borenstein reports a greater than fourfold increase in harmful algal blooms (74 to 329). `stranding of...

• Troubleshooting the Compost Pile

  Jan. 1, 1999

  While composting is a biological process, we as composters must provide the microorganisms that do the work with the conditions they need to do their job. If there is a problem with the system, then look at it from the point of view of the microbe. What does that microbe need to function, and why isn’t it functioning correctly? Microorganisms need a source of energy organic feedstocks to feed on and draw energy. Some of that released energy causes the compost pile to heat. Besides energy, organisms need nutrients...

• The EU Eco-industry`s export potential

  Jan. 1, 1999

  Introduction This report provides the findings to a study commissioned by DGXI of the European Commission and undertaken by ECOTEC Research & Consulting Ltd. The study has been commissioned to provide an analysis of current export activity by the EU eco-industry, the employment effects of this export activity, future export opportunities and to develop appropriate policy recommendations for promoting EU eco-industry exports and employment in the future. Objectives Specific objectives of the study are...

• Assessment of the Environmental Impact of Military Activities During the Yugoslavia Conflict

  Jan. 1, 1999

  1. Executive Summary Assessment Method:The study was carried out over a period of ten days by a team of expert staff from the Regional Environment Center for Central and Eastern Europe (REC) and other contracted country experts. A framework was prepared by REC headquarters and the REC`s country offices in the five selected countries gathered information and data. Additional experts were hired to give some analysis of certain specialised subjects in Yugoslavia, FYR Macedonia and Albania. The information was...

• Using On-Site Biological Methods to Clean Up Soil

  Jan. 1, 1999

  Decontamination companies and researchers in France are working to restore polluted soil using treatments that range from biological methods to soil washing and incineration. The problem of polluted soil was dramatically illustrated prior to construction of the Stade de France soccer stadium built for the 1998 World Cup. The location of the site, on industrial wasteland just north of Paris, caused immense difficulties for the developers. Tens of thousands of cubic meters of earth contaminated by a gasworks had to...

• Closing the Waste Loops: Australian Newsprint Mills

  Jun. 1, 1998

  The manufacture of newsprint is a process which generates both solid and liquid wastes. Australian Newsprint Mills Ltd Albury has given increasing attention to waste issues in recent years and has succeeded in closing or partially closing some of the ëwaste loopsí, especially in the areas of waste paper recycling, waste water, and solid waste. Background Australian Newsprint Millsí (ANM) integrated pulp and paper mill at Albury, New South Wales, was established in 1981. The facility currently manufactures...

• Monitoring - Pollution Prevention Guidelines

  Jan. 1, 1998

  Introduction Pollution Prevention Guidelines to provide technical advice and guidance to staff and consultants involved in pollution-related projects. The guidelines represent state-of-the-art thinking on how to reduce pollution emissions from the production process. In many cases, the guidelines provide numerical targets for reducing pollution, as well as maximum emissions levels that are normally achievable through a combination of cleaner production and end-of-pipe treatment. The guidelines are designed to...

• In Situ Physical/Chemical Treatment for Ground Water and Leachate

  Jan. 1, 1997

  The main advantage of in situ treatments is that they allow ground water to be treated without being brought to the surface, resulting in significant cost savings. In situ processes, however, generally require longer time periods, and there is less certainty about the uniformity of treatment because of the variability in aquifer characteristics and because the efficacy of the process is more difficult to verify. Physical/chemical treatment uses the physical properties of the contaminants or the contaminated...

• In-well Vapor Stripping - Technology Overview

  Jan. 1, 1997

  In-well vapor stripping technology involves the creation of a ground-water circulation pattern and simultaneous aeration within the stripping well to volatilize VOCs from the circulating ground-water. Air-lift pumping is used to lift ground-water and strip it of contaminants. Contaminated vapors may be drawn off for aboveground treatment or released to the vadose zone for biodegradation. Partially treated ground-water is forced out of the well into the vadose zone where it reinfiltrates to the water table....

• Water Quality Models

  Jan. 1, 1997

  ` In order to determine the impacts of a particular discharge on ambient water quality, it is usually necessary to model the diffusion and dispersion of the discharge in the relevant water body. The approach applies both to new discharges and to upgrading of existing sources. This note provides guidance on models that may be applicable in the context of typical Bank projects.` Introduction Mathematical models can be used to predict changes in ambient water quality due to changes in discharges of wastewater. In...

• Non-Ionising Radiation

  Jan. 1, 1996

  Pressures on the environment may occur through chemical, physical and biological agents. The subject of this study is physical agents, where physical fields are examined. Physical fields are part of the natural environment. Depending upon their properties and the surrounding conditions, physical fields are transmitted through the spaces in which we live, potentially affecting human health and nature. Human activity can add to, modify, and enhance and reduce the intensity of these fields. Furthermore, changes in...

• Sources of PCDDs/PCDFs In Cement Kiln Emissions

  Jan. 1, 1996

  Abstract This paper presents data on the source of PCDDs/PCDFs in cement plant stack emissions, demonstrating that these emissions are not necessarily all created by the process. The data potentially demonstrates that some of the PCDDs/PCDFs in the emissions are pre-existing dioxins and furans that are vaporized out of the kiln raw feed. This calls into question the assumption that PCDD/PCDF emissions can be decreased below a certain point. The EPA has acknowledged resuspended PCDD/PCDF emissions, such as from...

• Treating Industrial Water with Membrane Technology

  Jan. 1, 1995

  A variety of industries are finding that it makes sense to reevaluate the way they treat industrial process water, both to improve the quality of their products and increase the efficiency of their processes. Purification systems utilizing crossflow membrane filtration, such as reverse osmosis (RO), nanofiltration (NF) or ultrafiltration (UF) can be a good alternative to traditional filtration and chemical treatment systems. RO crossflow filtration systems produce water similar in quality to demineralized or...

• Membrane Selection and Optimal Ammonium Nitrate Chemistry for Reverse Osmosis Treatment of ...

  Jan. 1, 1990

  A process for manufacturing explosives produces an ammonium nitrate-laden wastewater, which can be successfully treated with reverse osmosis (RD). Key to RD use is balancing the competing waste solution chemistry requirements of the two target solutes, to enhance the performance of the particular RD membrane chosen. While the EPA requires only the reduction of the N03 and NH4+ discharge levels one manufacturer has chosen the approach of reusing both permeate and concentrate streams to `close the loop.` A lab-scale...