Soil Treatment Articles

  • In-Situ Treatment - Funnel & Gate System - Case Study

    Problem An asphalt testing facility, in operation for many years, closed in the early 1990s. A subsequent environmental assessment revealed that an underground storage tank, used to hold common cleaning/degreasing solvent for use during testing, had developed a leak and had to be abandoned. The storage tank and soil in the immediate vicinity was removed as the first step to remediate ...


    By C3 Environmental Limited

  • Six months treatment cut 95% of priority PAH pollutants from coke oven effluent

    Six months treatment cut 95% of priority PAH pollutants from coke oven effluent. Citadel Biocat+TM provided the bioremediation in situ of 150,000 cubic meters of contaminated soil at a decommissioned coke oven effluent lagoon. Several decades of steel production had created a residue of significant amounts of polycyclic aromatic hydrocarbons (PAH’s), along with soluble components such as ...

  • Contaminated soils and sludge treatment plant - Case Study

    Client: Ecosistem Group, Lamezia Terme (CZ) – Italy Challenge: to transform waste into product! The Client possesses a large plant for the treatment of products contaminated with hazardous substances and materials, recycling of recovered materials and disposal of non-recyclable waste, which is considered highly ...


    By Baioni Crushing Plants Spa

  • 4 Types of Contaminants in Water

    The EPA says that there are 4 type of water contaminants: physical, chemical, radiological, and biological. Its definition includes anything that is not an actual water molecule. That means that naturally occurring things like sediment and water weeds are considered contaminants along with things like oil and uranium. Chances are good that the type of contaminants your company needs to keep out ...

  • A smartphone camera for the structure from motion reconstruction for measuring soil surface variations and soil loss due to erosion

    The suitability of a smartphone camera for the structure from motion (SfM) reconstruction for monitoring variations in soil surface characteristics and soil loss originated by a low intensity erosive event was evaluated. Terrestrial laser scanning (TLS) was used to validate the SfM model. Two surveys of the soil surface, one before and one after the rainfall event, were carried out for SfM and ...


    By IWA Publishing

  • Case study - Polyphosphates for in situ uranium immobilization

    INFORMATION Carus Corporation has a long history of developing and providing a variety of permanganate products for chemical oxidation applications. Carus is also a leading provider of phosphate products for sequestration and corrosion control. Phosphates are widely used as water treatment chemicals (dry or liquid solutions) to correct problems resulting from inorganic groundwater ...


    By Carus Corporation

  • Axion: is ‘storing’ waste plastics better than burning?

    As global temperatures head for potentially catastrophic levels, landfilling rather than burning waste plastics might be better for the environment, suggests Keith Freegard, Director of Axion Polymers. Landfill or incineration: what is the best disposal route for our waste plastic materials? Large numbers of energy-from-waste (EfW) plants exist right across Europe and many of ...

  • An approximate model on three-dimensional groundwater infiltration in sewer systems

    Groundwater infiltration through cracked sewer pipes has caused significant economic losses. This paper presents a three-dimensional analytical expression for calculating the steady-state groundwater infiltration rate into sewer systems. As an extension of the previously developed two-dimensional model by the author, this new model can be used to simulate the infiltration through an orifice ...


    By IWA Publishing

  • Healthy soil is essential to a circular economy

    To achieve the Dutch government's objective of realising a circular economy in the Netherlands, it is essential to maintain the productivity of the country's farmland. Healthy soil produces renewable raw materials for biobased products. However, declining carbon levels in arable Dutch soil is inhibiting our ability to meet this objective, and continued global warming is standing in the way of a ...

  • Splenic immunotoxicity in developing cane toads (Rhinella marina) from Bermuda

    The impacts of contaminated sediment from 2 ponds in Bermuda on immune function in newly metamorphosed cane toads were examined. In the present study, a partial life‐cycle experiment exposing Gosner stage 20 cane toad tadpoles to pond sediment and laboratory culture water through metamorphosis and into a juvenile state was performed. A basic immunology battery, including general necropsy, ...


    By John Wiley & Sons, Ltd.

  • Assessing toxicity of contaminants in riverine suspended sediments to freshwater mussels

    The Clinch River in Virginia and Tennessee, USA, is well known for its diverse native freshwater mussel assemblages; however, notable declines in mussel populations in recent decades have prompted much concern and subsequent research. The authors examined the toxicity of recently‐deposited sediments on juveniles of the freshwater mussel Epioblasma brevidens, by collecting time‐integrated ...


    By John Wiley & Sons, Ltd.

  • Ultrasonic treatment for quantification of bioavailable phosphorus in soils and suspended sediments

    Several bioassays and chemical extraction methods have been proposed to quantify bioavailable phosphorus (BAP), but procedural and theoretical limitations have hindered their use. In this paper, we developed a method for P extraction from agricultural soil and suspended sediment by combining ultrasonic treatment with extraction by 0.1 molL−1 NaOH solution. The extraction process is less ...


    By IWA Publishing

  • Control of disinfection byproduct (DBP) precursors by soil aquifer treatment (SAT): what length of hydraulic retention time (HRT) is necessary?

    The study attempted to determine the hydraulic retention time (HRT) required for soil aquifer treatment (SAT) to reclaim water as potable water in an aspect of controlling disinfection byproduct (DBP) precursors. In order to evaluate the removal of DBP precursors, the uniform formation condition was used to estimate the formations of trihalomethanes (THMs) and haloacetic acids (HAAs). Effluent ...


    By IWA Publishing

  • Fate of selected pharmaceuticals and their metabolites in soil aquifer treatment

    Through a series of long-term column experiments, the fate of three common pharmaceuticals (carbamazepine (CBZ), diclofenac, and indomethacin) and their major phase I metabolites in soil aquifer treatment (SAT) were monitored. CBZ concentration increased by a factor of two (from 37 to ca. 70 ng/L) regardless of the treatment conditions, and its metabolites, ...


    By IWA Publishing

  • Cytotoxic and genotoxic activities of waters and sediments from highway and parking lot runoffs

    The genotoxicity of water and sediment samples from stormwater treatment systems and water from urban highway runoff was tested in the Salmonella/microsome assays with Salmonella typhimurium, micronucleus assay (Trad-MN) with plants and with human-derived liver cells (HepG2), or comet assay with HepG2. Cytotoxicity of water samples was studied using either reactive oxygen ...


    By IWA Publishing

  • Bioaccessibility tests accurately estimate bioavailability of lead to quail

    Hazards of soil‐borne Pb to wild birds may be more accurately quantified if the bioavailability of that Pb is known. To better understand the bioavailability of Pb to birds, we measured blood Pb concentrations in Japanese quail (Coturnix japonica) fed diets containing Pb‐contaminated soils. Relative bioavailabilities were expressed by comparison with blood Pb concentrations in quail fed a Pb ...


    By John Wiley & Sons, Ltd.

  • Impact of pre-treatment technologies on soil aquifer treatment

    This study investigates the impact of pre-treatment options on the performances of soil columns simulating soil aquifer treatment (SAT). For this purpose a conventional activated sludge (CAS) process, a membrane bioreactor (MBR) and vertical flow reed beds were used as single units or in combination before SAT. The influent and effluent from each treatment train were monitored over three ...


    By IWA Publishing

  • A procedure for assessing the impacts of land-cover change on soil erosion at basin scale

    Accelerated soil erosion is an undesirable process that adversely affects the conservation of water and soil. This paper used a procedure linking the Revised Universal Soil Loss Equation (RUSLE) and geographic information system (GIS) to map the soil erosion level from 1990 to 2010 caused by land-cover change in the Dongjiang River basin, China. Results indicate that the significant land-cover ...


    By IWA Publishing

  • Remote sensing and GIS based assessment of soil erosion and soil loss risk around hill top surface mines situated in Saranda Forest, Jharkhand

    The quantitative analysis of soil erosion changes over 7 years due to mining operations in two neighboring hilltops in West-Singhbhum District, Jharkhand, are reported. CartoSat-1, ETM+ and LISS-IV satellites' data provided spatial inputs in Universal Soil Loss Equation (USLE) and Morgan, Morgan and Finney method (MMF) models, which were used to predict the average annual soil erosion during ...


    By IWA Publishing

  • Former Dry Cleaning Site Contaminated with PCE - Case Study

    In-Situ® Inc. TROLL® 9500 Multiparameter Sonde helps resolve treatment challenges and saves $200,000 in drilling, reagents, and consulting. A former dry-cleaning site in the Pacific Northwest, Ultra Custom Care Cleaners, was found to be contaminated with PCE (perchloroethylene). According to the U.S. Geological Survey (USGS), PCE was widely used in the dry cleaning of fabrics since the ...


    By In-Situ, Inc.

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