biodegradability measurement Articles

  • The biological basis of wastewater treatment

    Introduction This booklet was written to fulfil the need for a simple explanation of the biological processes that underpin wastewater treatment. It attempts to show how the bacteria involved deal with the organic carbon in the sewage. Remarkably, there are just 3 major processes involved, and these mirror exactly the 3 major processes at work in the plant viz: biodegradation, oxygen ...

  • Cementatious considerations for medical waste solidification

    The most common cause for alarm in the medical field pertaining to waste disposal is the exposure of the worker to infectious wastes and contraction of diseases from these wastes. With the increased risk of exposure to blood borne pathogens in handling body fluids and disposal of items that have been tainted by these fluids, awareness and education for the prevention of percutaneous wounds is the ...

  • Maintenance To-Do: Coil Cleaning

    A coil-cleaning program should be an integral part of maintaining some kinds of process cooling equipment. Most people think of coil cleaning as a building or facility prepares to turn on the air-conditioners for another season. Admittedly, spring is a perfect time to put such cleaning and maintenance at the top of the to-do list. Condenser and evaporator coils are an integral part of HVAC ...


    By Evapco Inc.

  • Explore the capabilities of nanofiltration and ultrafiltration. Filters have similar looks, different applications

    Introduction Even if you’re an expert in reverse osmosis (RO) membrane technology, you may be overlooking some applications using often neglected cousins of RO: nanofiltration (NF) and ultrafiltration (UF). Although virtually identical in looks to RO membranes, NF and UF membranes serve distinctly different separation functions. Dramatic levels of resource recovery, efficiency ...

  • Natural Attenuation in Soils

    Introduction Surface and subsurface soils have different characteristics in natural attenuation. Mobile contaminants in subsurface soils diffuse into soil vapor and aqueous phase and thus are relatively easily subject to natural subsurface processes that can attenuate these contaminants. Most high-molecular-weight (persistent) organic and many inorganic contaminants will be immobilized in the ...

  • We need a global treaty on plastics. Here’s what it should look like.

    Plastic pollution is more than an ocean problem, and it’s time we treat it as such. Plastics have boosted our economy because they are versatile, cheap and durable. Yet, thanks to these same traits, in the course of establishing a US$750 billion global industry, we have ...


    By Ensia

  • Train derailment prompts contaminated land investigation - Case study

    On March 30th 2015 a long freight train, transporting a variety of goods including lumber and chemicals, wound its way through the state of Mississippi. At around 5pm, part of the train failed to negotiate a curved portion of the track in a rural area near Minter City, resulting in the derailment of nine railcars, one of which leaked chemicals onto agricultural farmland and woodlands. Emergency ...


    By Gasmet Technologies Oy

  • Assessing the transport and fate of MTBE

    Untitled Document ...


    By Solinst Canada Ltd.

  • Controlling Odors from Waste Water Treatment Plants

    INTRODUCTION In recent years, there is growing public awareness of odors from waste water treatment plants, which mainly stems from the following observed trends: The public is less tolerant of objectionable odors from waste water treatment plants; Many waste water treatment plants have seen residential, commercial, or other developments established near the facility ...


    By PRD Tech, Inc.

  • WEFTEC’ 2013 Lagoon wastewater treatment using Innovative bioaugmentation technology case study

    Introduction and Problem Statement Lagoon wastewater treatment systems employ a combination of physical, chemical, and biological processes to treat wastewater. Lagoon wastewater treatment systems are simple, natural, energy efficient, and one of the most cost effective treatment options, especially for small and rural communities. Lagoon systems are easy to operate, require lower ...

  • New EEA Report

    Environmental Signals 2000 is the first of a series of regular indicator reports on the European environment to come from the Agency. Published annually, these reports will provide policy makers, experts and the general public with the very latest assessments of the EU’s environment. The reports will fill the five-year gaps between the EEA’s main state of the environment reports such as ...

  • Assessing the Potential for Nitrification Inhibition at Wastewater Treatment Facilities as a Result of Zinc Othrophosphate Addition to Potable Water Distribution Systems

    ABSTRACTPortions of the greater metropolitan District of Columbia area have water distribution system corrosion problems. This has resulted in elevated levels of heavy metals, in particular lead from some plumbing and service connections. One alternative being considered for corrosion control is the addition of either phosphoric acid (ortho-phosphate) or zinc ortho-phosphate based products at the ...

  • Why Water Scale is Dangerous for Equipment

    Mineral scale occurs wherever circulating water exists, and it forms very fast (generally less than 3 weeks). Even a very thin layer, it will also cause insulation, make equipment inefficient, increase cost, and in some serious cases, it will shut down the whole system and even cause explosion. These problems have already existed in different fields, and are becoming worse and worse. ...


    By Mibo International Corp.

  • Circular Economy Package: Questions & Answers

    What is the Circular Economy? To ensure sustainable growth for the EU we have to use our resources in a smarter, more sustainable way. It is clear that the linear model of economic growth we relied on in the past is no longer suited for the needs of today's modern societies in a globalised world. We cannot build our future on a 'take-make-dispose' model. Many natural resources are ...

  • 10 Things To Know When Choosing An Assembly Lubricant

    What is a Lubricant? A lubricant is a material that reduces the friction between two surfaces making it easier for them to move across each other. Lubricity measures the reduction of friction that results from using a lubricant. A higher percentage of lubricity indicates a greater reduction of force. ...

  • Questions and answers on the Commission Communication `Towards a Circular Economy` and the Waste Targets Review

    What is a circular economy? A circular economy preserves the value added in products for as long as possible and virtually eliminates waste. It retains the resources within the economy when a product has reached the end of its life, so that they remain in productive use and create further value. It may involve: Increasing the time products deliver their service before ...

  • Affordable new compost technology provides in-vessel levels of gas emission and odor control

    Increasingly stringent air-emission regulations and demands to better control odors has put an economic strain on industries that recycle large amounts of organic materials, such as compost facilities, dairies, and feedlots. ECS has recently introduced an affordable composting technology to greatly improve facility compliance and odor control. This technology is the AC Composter. Air Quality ...

  • Corporate Sustainability Programs

    In today’s business world, sustainability is becoming an integral part of company operations. Here’s how a few manufacturers are making sustainability part of their business model, and how standards play a role. Understanding sustainability and what it means to be a sustainable business continues to evolve as more companies issue sustainability reports, sign on for carbon ...


    By ASTM International

  • Vinyl Chloride Attenuation By Direct Injection of Time-Release Magnesium Peroxide.

    ABSTRACT: This case study shows that there is potential to remediate dissolved vinyl chloride by oxygenation in the field. Residual vinyl chloride concentrations have been remediated in the field at a mid-western site with a phosphate-intercalated peroxygen (ORC®, a proprietary formulation of magnesium peroxide that releases oxygen slowly). The site was formerly operated as an aluminum coating ...


    By Regenesis

  • Principles of Waste Avoidance and Utilization

    The minimization of wastes requiring disposal is increasingly important as available disposal options become more and more constrained, and particularly as more substances enter everyday use which are not readily decomposed in the natural environment and which can present long term hazards. This note sets out some basic principles for waste minimization in industrial processes, where ...


    By The World Bank

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you