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groundwater level Applications

  • Groundwater Monitoring for Remediation

    Many fresh water sources have been degraded to toxic levels by the inclusion of industrial, agricultural, and human waste products that have been discharged into the closest body of water, accidentally or deliberately for many years.

    By HERON Instruments Inc. based in Dundas, ONTARIO (CANADA).

  • Data analysis and visualization tools for groundwater and solute transport

    Groundwater and Solute Transport modeling is a sub discipline of environmental sciences with unique needs. Modeling has long utilized 3D simulations, but the ability to visualize and animate the results has lagged far behind the simulation technology. EVS-PRO, MVS, and EnterVol offer professional level presentation tools worthy of the current state-of-the-art in modeling. Visualization of groundwater and solute transport modeling results can be performed with all versions of C Tech’s software except for EVS for ArcView. EVS-Pro, MVS, and EnterVol are particularly well suited for animation and visualization of earth science modeling results from third party modeling systems such as USGS MODFLOW, MT3D, GMS©, Groundwater Vistas© and Visual MODFLOW©. Both combine animation capabilities with a powerful suite of visualization tools in a fully customizable environment.

    By C Tech Development Corporation based in Henderson, NEVADA (USA).

  • Data analysis and visualization tools for groundwater modeling

    Groundwater and Solute Transport modeling is a sub discipline of environmental sciences with unique needs. Modeling has long utilized 3D simulations, but the ability to visualize the results has lagged far behind the simulation technology. EVS-PRO and MVS have long offered professional level presentation tools worthy of the current state-of-the-art in modeling, and EnterVol now opens that door to GIS professionals around the world. Visualization of groundwater and solute transport modeling results can be performed from third party modeling systems such as USGS MODFLOW, MT3D, GMS©, Groundwater Vistas and Visual MODFLOW© using C Tech’s tools to convert these modeling outputs into EFF format. In conjunction with Lawrence Livermore National Laboratory and IT Group, C Tech performed the visualization and animation of the output from a Groundwater Vistas MODFLOW and MT3D99 simulation of a large industrial complex in the central valley area of California.  This site exhibits highly channelized flow which is evidenced by the flow paths. Note that flow in the lower aquifer crosses underneath the upper channels at about 30 degrees!

    By C Tech Development Corporation based in Henderson, NEVADA (USA).

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    ph determination for soil testing

    Determination of the pH value provides information about the acid or base action of the soil solution. This in turn is enormously important for the nutrient supply and microbial activity of the soil. For example, many metals (trace elements) are considerably more mobile in acidic soils. If the soil pH values are very low, toxic levels can soon be reached and these can damage the roots of plants. On the other hand, excessively high pH values quickly lead to a shortage of trace elements because of immobilization.

    By Metrohm AG based in Herisau, SWITZERLAND.

  • Liquid Chromatography for soil consultancy

    Everyone has a responsibility to care for the environment to reduce the levels of pollution, including businesses that daily release emissions into the air and the ground. This is why we provide a full-service environmental testing service to help businesses identify problems and resolve them so they operate in the most environmentally-friendly method possible. We offer air emission testing, emissions monitoring services and stack emissions testing to businesses of all sizes.

    By Custom Stack Analysis, LLC. based in Alliance, OHIO (USA).

  • Solutions for the in-situ soil remediation

    For over twenty years, BioSolve Pinkwater has been used for Surfactant Enhanced Remediation (SER) to mobilize and solubilize residual NAPL[i], facilitating its recovery and disposal. Depending on soil and plume characteristics, Pinkwater solution can reach contaminated zones through deep injection wells or be gravity fed from surface level injection galleries. After desorbing residual NAPL from soil surfaces on contact, Pinkwater then solubilizes the hydrocarbons in an aqueous emulsion, enabling extraction at down gradient recovery wells or trenches.

    By The BioSolve Company based in Lexington, MASSACHUSETTS (USA).

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    Mercury monitoring for on-site remediation

    Fugitive emissions can be a health concern during removal and disposal of mercury-contaminated material at remediation sites. Thus, remediation projects either indoors or outdoors often require on-site, real-time mercury air monitoring with a Tekran 2537. This assures permitted levels are not exceeded during waste processing and human exposure levels are below government regulated toxicity thresholds. Often multiple sites must be monitored continuously. The Tekran 1115 Multi-Port Sampler is the ideal tool for multiplexing the Tekran 2537 for real-time continuous on-site monitoring of mercury fugitive emissions. Please contact us for more information on mercury remediation monitoring.

    By Tekran Instruments Corporation based in Knoxville, TENNESSEE (USA).

  • Rock excavation for the soil remediation industry

    If your job includes recycling contaminated hazardous material, a Vermeer T1255 Terrain Leveler SEM may offer a cost-efficient alternative to other remediation technologies.

    By Vermeer based in Pella, IOWA (USA).

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    Oil in Water Analysis for Flowback or Produced Water

    The amount of water used in and produced by hydraulic fracturing of shale gas wells is in the millions of gallons per well. Whether the water is going to be taken off site for disposal or reused for re-injection, the flowback or produced water needs pretreatment to remove any residual oil from the water. Waiting for remote lab results can take several days to a week. InfraCal TOG/TPH Analyzers allow for oil in water testing at the well site in less than 10 minutes. The sampling requires a few simple steps that can be performed by non-technical personnel. The water is mixed with the extraction solvent, shaken, and then presented to the analyze for measurement. The same InfraCal TOG/TPH Analyzer can be used for TPH in soil if a spill or pond leak occurs to determine the contaminated area. The analyzer features: -Results in under 15 minutes -Detect levels as low as 10 ppm -Portable, rugged, lightweight, easy-to-use -Battery operable -Ideal for field or lab use

    By Spectro Scientific based in Chelmsford, MASSACHUSETTS (USA).

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    Drinking water solutions for the nitrate monitoring

    Problem: Nitrate, the most stable form of nitrogen in water, is found in both ground and surface water and originates from both natural and anthropogenic sources. Due to its high solubility in water, nitrate is not filtered out from groundwater like other contaminants. Removing nitrates from source water is important as elevated levels in drinking water can cause serious health effects when ingested.

    By Real Tech Inc. based in Whitby, ONTARIO (CANADA).

  • Industrial water Nitrate removal from drinking water

    Since nitrates are very soluble and do not bind to soils, they have a high potential to migrate to groundwater. For the short-term, excessive levels of nitrate in drinking water have caused serious illness and sometimes death. The serious illness in infants is due to the conversion of nitrate to nitrite by the body, which can interfere with the oxygen-carrying capacity of the child’s blood. This can be an acute condition in which health deteriorates rapidly over a period of days. Symptoms include shortness of breath and blueness of the skin.

    By PuriTech Ltd based in Herentals, BELGIUM.

  • Liquid Rock - Prevening Scale Formation from Ground Water Hardness

    Groundwater is in contact with soil and rock minerals. Significant amounts of the minerals are dissolved in the groundwater. Elevated water hardness is the result of the water interaction and partial dissolution of carbonate minerals. Scale formation is a crystallisation process. Crystals are a highly organised arrangement of molecules. The determining circumstances for a successful crystallisation event include concentration, temperature, pressure and chemical environment. Suitable conditions for the formation of a crystal require numerous factors to coincide. CALSTAT RO-30 provides crystallisation interference at a molecular level :  Excellent results are achieved at low trace quantities of product. Calstat RO-30 dosed at trace levels of 4-10 kg per million litres  Corrosion on steel surfaces is reduced or eliminated  For drinking water production with RO (reverse osmosis) systems, membrane fouling is reduced. The water additive

    By WAT Australia Pty.Ltd. based in West Australia, AUSTRALIA.

  • Sulfide Oxidation with Hydrogen Peroxide (H2O2)

    Sulfide Odor Control Sulfide is found throughout the environment as a result of both natural and industrial processes. Most sulfide found in nature was produced biologically (under anaerobic conditions) and occurs as free hydrogen sulfide (H2S) - characterized by its rotten egg odor. We are most likely to encounter biogenic H2S in sour groundwaters, swamps and marshes, natural gas deposits, and sewage collection/treatment systems. Manmade sources of H2S typically occur as a result of natural materials containing sulfur (e.g., coal, gas and oil) being refined into industrial products. For a variety of reasons - aesthetics (odor control), health (toxicity), ecological (oxygen depletion in receiving waters), and economic (corrosion of equipment and infrastructure) - sulfide laden wastewaters must be handled carefully and remediated before they can be released to the environment. Typical discharge limits for sulfide are < 1 mg/L. Sulfide Treatment Alternatives There are dozens of alternatives for treating sulfide laden waters, ranging from simple air stripping (for the low levels present in groundwaters) to elaborate sulfur recovery plants (used to treat several tons per day at refineries and coal burning power plants). There are processes based on biology (using compost filters, scrubbing media, or inhibition/disinfection), chemistry (oxidation, precipitation, absorption, and combination), and physics (adsorption, volatilization, and incineration). Each process occupies a niche which is often defined by the scale and continuity of treatment, whether the sulfide is in solution or is a gas, the concentration of sulfide involved, and the disposition of the sulfide containing medium. However, for reasons relating to convenience and flexibility, chemical oxidation (using hydrogen peroxide) continues to grow in its scope of application. Treatment with Hydrogen Peroxide While other peroxygens such as permonosulfuric (Caro’s) acid, peracetic acid, and persulfates will oxidize sulfide, their use for this application is overkill. Hydrogen peroxide (H2O2) is considerably simpler and more cost-effective. H2O2 may control sulfides in two ways, depending on the application: Prevention - by providing dissolved oxygen which inhibits the septic conditions which lead to biological sulfide formation; and Destruction - by oxidizing sulfide to elemental sulfur or sulfate ion.

    By USP Technologies based in Atlanta, GEORGIA (US) (USA).

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