city cleaning Articles

  • Biosolids ban struck down

    In 1994, Los Angeles County Sanitation Districts (LACSD) bought a 4,700-acre farm (called Green Acres Farm) in southwest Kern County for the purpose of land applying biosolids from its 11 wastewater treatment plants. LACSD land applied 800 wet tons/day at this site for several years. In 2006, Kern County voters passed Measure E on the ballot with 83 percent approval. This measure banned ...


    By BioCycle Magazine

  • Los Angeles County WRRF Embraces Codigestion

    Technology to produce food waste slurry key to project implementation - and helps generators comply with California organics recycling mandates. The Sanitation Districts’ JWPCP in Carson (CA) treats an average of 280 million gallons/day of wastewater. One of the two anaerobic digestion tanks above has been used for codigestion, with the second serving as the control. Photos ...


    By BioCycle Magazine

  • What is a wastewater treatment system and how does it work?

    For industrial companies producing wastewater as part of it’s process, some type of wastewater treatment system is usually necessary to ensure safety precautions and discharge regulations are met. The most appropriate wastewater treatment system will help the facility avoid harming the environment, human health, and a facility’s process or products (especially if the wastewater ...


    By SAMCO Technologies, Inc.

  • The Rationale for Accelerating Regionally Focused Climate Intervention Research

    Abstract Ten years ago, Paul Crutzen asked whether the time had come to consider undertaking research into intentionally intervening in the climate system so that it might be considered a policy option comparable to reducing emissions for limiting human-induced climate change. Crutzen’s article pointed out how little progress had been made in reducing emissions and suggested that ...


    By Climate Institute

  • This Designer Is Cleaning Up City Smog and Turning It into Jewelry

    A Dutch designer has created a new tower to filter city smog and — hopefully — help end China’s air pollution problem. China’s ongoing struggle with smog is notorious. Rapid industrialization paired with an initial lack of ...


    By Camfil Ltd

  • San Francisco bay area city cleans Mossy mess - case study

    In Contra Costa County, east of San Francisco, we installed an IWS Screen to remove all types of water borne debris including moss, grass, hyacinth and tumbleweeds.   The installation reduces man hours and risk of injury from raking trash racks as well as keeping service lines clear. This project included: Traveling Screen(s) Elevator Pump ...


    By International Water Screens

  • Adding Quality to City Life

    The Special Service District's impact shines throughout downtown. Within the district's 760 acres, Tampa's Downtown Clean Team Beautifies the streets, while the softer side of security, Tampa's Downtown Guides, patrol by foot and bike. The six Clean Team members collect more than two tons of trash and other debris every day. In 2004, they kept 720 tons of garbage off the city streets. Tampa's ...


  • Glasgow City Council, UK

    Two years ago the Glasgow City Council announced a major clean-up of the Clyde as part a regeneration programme. The clean-up was regarded as an important element in attracting tourists to the cities riverside and its continued development. However two rivers, the Cart and Kelvin flow into the River Clyde and bring with them hundreds of tonnes of floating litter and debris right onto the ...


  • Exchange of Transformers in the castle and in the city of Marburg

    The challenge for the team of ABB Environmental Services, led by Helmut Bergel, was a full service project, including the exchange and replacement of transformers contaminated with the environmental pollutant PCB (Polychlorinated Biphenyls, a class of chlorinated hydrocarbons that have been used extensively since 1960 for a variety of industrial uses like coolants in transformers and dielectrics ...

  • Ideal for city jobs - Case Study

    Ulrik Sinding, owner of Djursland Kloakservice ApS (a sewage service company in Trustrup, Denmark) was practically born into the vacuum tanker business. Already in 1979, as a 15-year-old, he was hired by the company that his father, Orla Sinding, started in 1964. In 1989, at the age of 25, Ulrik Sinding took over the company, which has installed Samson pumps in most of its vacuum tanker trucks. ...


    By Samson Pumps A/S

  • 10 top tips for sustainable cities

    As global population grows, urban population is growing even faster — with 2.5 billion more city dwellers expected by 2050, according to the United Nations. And while urbanization can bring benefits in terms of economies of scale, social cohesion, technological innovation, transportation efficiency and more, cities can also be breeding grounds for poverty, pollution and malaise. To help ...


    By Ensia

  • Edmonton is a world-class composting city

    State-of-the-art compost facility draws visitors from around the world A Canadian composting facility has become a hub for industry experts from around the world. Visitors from virtually every continent have visited the Edmonton Composting Facility to learn how this state-of-the art facility is combining sewage sludge (biosolids) with residential solid waste, to create a high-quality ...


    By Vermeer

  • Sustainable Cities: From a Vision to Reality

    The C40 Cities Mayors Summit in Johannesburg, South Africa kicks off today (Feb. 4). It’s the fifth biennial meeting of the C40 Cities Climate Leadership Group, a collection of mayors from cities around the world committed to advancing urban solutions to climate change. The theme for the event is “Towards resilient and ...

  • China awakes to clean transportation

    In the following months and at least until the Beijing Olympic Games in 2008, Chinese roads and cities, particularly in Beijing and Shanghai, will be a choice testing ground for different types of clean individual and collective low-pollution vehicles, such as fuel cell, hybrid and electric vehicles. We already knew that hybrid microturbine buses were to be road tested in China. Now ...

  • Increased plant efficiency, City of Checotah, Oklahoma

    The City of Checotah, Oklahoma was experiencing excessive solids, foam and grease in their 0.5 MGD extended aeration activated sludge treatment facility. With a daily average flow of 0.25 million gallons per day, the plant had tremendous amounts of foam and grease in the aeration basin with the sidewalls caked with sludge. The centerwells of the clarifier were filled with foam and grease. The ...


    By Byo-Gon, Inc.

  • The Clean-Up of a Tragedy

    There's been a violent crime, a serious accident, or a suicide has occurred. The police, investigators, and paramedics have left the scene. The remains of this terrible tragedy are still there. You assume the local police, fire department, or the city has someone to take care of this, however, you are told it is up to you. You are the victim, part of the family, the property owner, or local ...

  • Working Towards Watershed Management in the City of Atlanta

    In 2002, the leadership of the City of Atlanta kicked off a comprehensive program to have the cleanest urban streams and rivers in the country within a decade, recognizing that the City’s future economic growth, jobs, affordability, and quality of life all depend on clean water. Atlanta is faced with many obstacles on the way to meeting this challenge; a few of these include: Ongoing ...

  • Restaurant grease trap, City of Irving, Texas

    The Problem Oil and grease from restaurants and fast food establishments have presented a major problem to wastewater treatment plants for years. There have been various additives; some have worked well for the removal of grease but cause problems later in the wastewater treatment plant With the changing regulations and enforcement as to what can be discharged into a system, about the ...


    By Byo-Gon, Inc.

  • The natural way to clean wastewater

    John Todd founded Ocean Arks International in the 1980s, where he started to experiment with processes that mimic natural ways to purify wastewater. He built a greenhouse and ran sewage through a series of tanks, with plants suspended in the flowing waters, and constructed marshes made of sand and gravel. No chemicals were added, but plenty of aquatic creatures from snails to small fish were ...


    By BioCycle Magazine

  • Indestructible Pumps for Clean Water

    Sulzer pumps are used in the production of drinking water in many cities around the world. The special qualities that these pumps possess can be seen at the Zurich Municipal Water Utility. There, the operators have to cope with rising land and energy prices and a challenging topography. A small water flea plays a major role in Zurich. It swims around in a container of drinking water with some of ...


    By Sulzer

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