ditch cleaning Articles

  • DO control maximizes oxidation ditch treatment efficiency - Case Study

    Process control is key to maximizing wastewater treatment efficiency while minimizing operating costs. Implementing the right process control system in conjunction with the right equipment can save money on electrical costs and equipment maintenance. The wastewater plant for the city of Dawson, MN, uses a  ...

  • Carpet Cleaning Machines to Keep Government Buildings Clean

    Contractors assigned to government buildings have to deal with two challenges that are heavy pedestrian traffic and restrictions on water use. Often, government buildings minimize water use in a bid to become more eco-friendly. This means that contractors cannot use too much water for washing carpets. The second is the problem of heavy dirt on carpets. Government buildings usually cater to many ...


    By Daimer Industries Inc.

  • The environmental pyramid: a new way to deal with solid toxic waste

    Our society produces large volumes of solid waste, including toxic chemical waste. For toxic solids, the current disposal practice is to dump them into isolated, lined pits, and cover them with a water-impermeable layer with a soil layer on top. Such waste deposits require 'eternal' control and monitoring, because they eventually do leak, contaminating the surrounding soil and groundwater. Here, ...


    By Inderscience Publishers

  • Revalorisation of property objects and collective action: the case of reclamation systems in northwest Poland

    This article examines two drastic changes in the performance of local water associations in providing local public goods – appropriate levels of water table – in the reclamation system in the Powiat Pyrzyce in the Voivodship Zachodniopomorski in northwest Poland. Employing an institutional economics approach shows the results of processes of revalorisation of the interrelated property objects ...


    By Inderscience Publishers

  • Sewer Level Monitoring - Photos

    Sewer Level Monitoring - Photos Photos in this article present the complexity and versatility of sewer level monitoring. When examining the photos, pay special attention to the stand-alone autonomous characteristics of each installation. In lack of any cabling from the outside, whether data cables or power cables, the solution is fed from its own battery power supply. Data is tranmitted ...

  • Transport and fate of phosphorus during and after manure spill simulations

    Animal manure spills contribute to P loading of surface waters and little is known about the effectiveness of the current manure spill clean-up methods to mitigate P contamination. Manure spill clean-up consists of containing, removing, and land applying the contaminated water column, while P-enriched fluvial sediments remain in place. Therefore, the objectives of this study were to (i) ...

  • Happy Customers, Healthy Business

    As the wastewater treatment industry becomes more competitive, customer service gives businesses the chance to rise above their competitors. Customer service is key in all industries. The water treatment industry is no exception. As the treatment of both drinking water and wastewater becomes a continually more competitive industry, with an ever-growing number of new companies offering ...

  • Fawn River Restoration, Restoring one of Indiana`s Most Pristine Rivers

    In 1998, approximately 100,000 CY of sediment was discharged to a 5-mile section of Fawn River, in Steuben County, Indiana as the result of a rapid draw down of an upstream reservoir (the “Event”). Prior to 1998, Fawn River below the Orland dam (“lower Fawn”) was recognized as one of the best-preserved sections of river in the State of Indiana. The Fawn had a deep swift ...


    By Streamside, LLC.

  • Design and operating experiences of full-scale municipal membrane bioreactors in Japan

    In Japan, membrane bioreactor (MBRs) have been installed in 17 small-scale municipal wastewater treatment plants (WWTPs) in the past 8 years, together with two recently installed MBRs for larger-scale WWTPs. In this study, design and operating data were collected from 17 of them as part of a follow-up survey, and aspects including system design, biological treatment, membrane operation, problems ...


    By IWA Publishing

  • Theory to Practice: Oxygen Transfer and the New ASCE Standard

    ABSTRACTOxygen transfer is an important part of wastewater treatment and accounts for as much as 60% of the energy consumption for the activated sludge process. Prior to 1984, no standard method for quantifying oxygen transfer existed, which created problems in the design and warranties for treatment plants. The ASCE Standard for the Measurement of Oxygen Transfer in Clean Water and the ASCE ...

  • Arundo Donax Removal in the Santa Ana River Watershed

    Orange County Water District (OCWD) was awarded the Ruth Anderson Wilson Award by the Santa Ana Watershed Project Authority for its collaborative efforts in a program to remove Arundo donax (arundo) from the Santa Ana River watershed. The arundo removal program is also one reason the U.S. Environmental Protection Agency selected OCWD as a Clean Water Partner for 2003. Arundo donax, or the giant ...


    By Graus Chemicals, LLC

  • A Federal District Court Issues First Decision Regarding New “Waters Of The US” Regulations

    In this post, "Waters of the United States" webinar instructor Larry Lodwick explains the latest about the temporary injunction on the EPA's new federal clean water rules. For full information about the latest on this, and details of the Rule updates, ...

  • Removal of Radioactive Effluent Waste from Uranium Enrichments Plants

    In an effort to reduce greenhouse emissions many nations and multi-national corporations are once again focusing on the development of safe radioactive sources for energy generation. After a hiatus of some 20 years commercial nuclear power plants are being developed globally to satisfy increasing global energy demands. Whether for generation of electrical power or in the production of fission ...


    By Dynamic Adsorbents, Inc.

  • If we quit oil, then what?

    Ditching oil would hugely increase electricity demand. Here’s why that’s a good thing for the environment. The recent oil pipeline spill in Santa Barbara has been an unfortunate case of déjà vu, bringing back collective memories of oil-slicked seabirds and blackened beaches. It came ...


    By Ensia

  • Fine screens help New Jersey wastewater treatment plant stop rag and grease problems

    A few years ago the Hammonton Wastewater Treatment Plant, located in the lush green countryside of southern New Jersey, faced continuous problems with rags, trash and plastics passing right through a rusty old bar screen and into the oxidation ditch and final clarifier.After years spent unclogging pumps, clearing out trash and untangling the UV system – plant managers decided to find a better ...


    By JWC Environmental

  • Whole Effluent Toxicity Testing

    What is Whole Effluent Toxicity (WET) testing? Whole Effluent Toxicity (WET) testing is an important component of the U.S. Environmental Protection Agency’s (USEPA’s) integrated approach for detecting and addressing toxicity in surface waters. The National Pollutant Discharge  Elimination System (NPDES) permit program, authorized by the Clean Water Act, controls water pollution by ...

  • Caravan sales park uses ACO SUDS system to create unique customer environment

    The new eleven acre landscaped extension to Salop Leisure's sales centre in Shrewsbury has exploited the versatility of ACO Water Management's grated drainage channel system, ACO MultiDrain MD, to create a unique SUDS scheme that adds a striking visual aspect to the setting and prevents any risk of flooding. By using a series of swales, pools and wetlands to receive rainwater collected by ...


    By ACO Group

  • Stormwater: Questions and Answers

    The whole subject of Stormwater is complicated. Here's a chance for you to check out some of the most frequently asked questions about stormwater . . . and their answers. What is an NPDES (National Pollutant Discharge Elimination System) permit? The Clean Water Act prohibits anybody from discharging 'pollutants' through a 'point source' into a 'water of the United States' unless they ...


    By Ben Meadows

  • Replacing brush rotors with AIRE-O2 TRITONS increases flow capacity and reclaimed water availability - Case Study

    Overview In 2012, the Middlebury, Indiana Wastewater Treatment Plant (WWTP) was faced with aging brush rotors and higher loads in their oxidation ditch system. When Mick Reese was hired as Plant Superintendent, the upgrade design was about 90% complete. The full system upgrade included adding an outer ring to the existing oxidation oval, construction of a new clarifier, controls ...

  • Reuse turns stormwater runoff from a problem to an asset

    With so much concern about water scarcity around the world, it seems a no-brainer that rain is a good thing. But nothing’s perfect. Even something as beneficial as precipitation can have its downsides. One problem, of course, is flooding. Another problem you may not have thought of comes with stormwater runoff in urban settings. What’s the problem? In cities, buildings and pavement ...


    By Fluence Corporation

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