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sewage discharge Applications

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    Area-velocity flowmeter for sewage lagoon discharge flow monitoring

    The Township of South Glengarry installs a new Greyline AVFM 5.0 Area-Velocity Flow Meter to measure continuous discharge from their municipal sewage lagoon. The sealed ultrasonic sensor is mounted in a horizontal 12` PVC pipe. The AVFM replaced a magnetic flowmeter that was unable to measure seasonal low flow rates.

    By Greyline Instruments Inc. based in Long Sault, ONTARIO (CANADA).

  • Mobile Sewage Treatment for Fishing Sites

    Remote fly-in recreational fishing lodges often require effluent to be discharged directly into surface water. NOMADIC™’s membrane technology produces the highest quality effluent of any sewage treatment technology available today.

    By Nomadic Systems based in Langley, BRITISH COLUMBIA (CANADA).

  • Mobile Sewage Treatment for the Forestry Industry

    Companies in this industry often operate in sensitive and protected environments. We are able to provide the forestry industry with high treatment performance that produces effluent safe for discharge into delicate eco systems.

    By Nomadic Systems based in Langley, BRITISH COLUMBIA (CANADA).

  • Continuous Monitoring of Wastewater

    The Sorbisense method allows for efficient monitoring of the sewage system and can help reduce costs of operation and environmental impact. The method is particularly well suited for tracking the source of periodic discharges, the identification of faulty pipe connections of the measuring of values in the recipient. The method also allows for measurements in dynamic sources - such as emissions from roads, roofs, parking lots and overflow

    By SORBISENSE based in Tjele, DENMARK.

  • Final effluent monitoring for wastewater treatment industry

    Industry and municipal waste-water (sewage) treatment plants have had to respond to environmental legislation such as the Urban Waste Water Directive, IPC, IPPC and now the EPR (Environmental Permitting Regulations). As successive legislation becomes more stringent, discharge consents have been progressively tightened, and the need for self-regulation has become more important. As a consequence, on-line instrumentation has been installed throughout waste-water industry to continuously to provide final effluent monitoring and perform water analysis for key consent parameters.

    By Pollution & Process Monitoring Ltd based in Sevenoaks, UNITED KINGDOM.

  • Biological wsatewater treatment for dairies

    Dairy raw wastewater is characterized by high concentrations and fluctuations of organic matter and nutrient loads related to the discontinuity in the cheese production cycle and machinery washing. Because the dairy industry is a major water user and wastewater generator, it is a potential candidate for wastewater reuse. Biowater’s wastewater system is based on highly efficient biofilm technology and is ideal for this type of application, one that requires pretreatment prior to discharge to a municipal sewage system.

    By Biowater Technology based in Cumberland, RHODE ISLAND (USA).

  • Waste management for ships and sea platforms

    For those who have lived in the arms of the sea, the bond is powerful and eternal. When mariners discharge waste into the sea, it is not carelessness but desperation…a last resort used in the absence of practical alternatives. The waste generated on every ship comes from both people and machinery. People generate garbage and sewage. The various motors and shafts generate used oils, dirty rags and a wide variety of other waste. The mariner has three options for all this waste: (i) store it on board and discharge it at the next port; (ii) treat it on board; or (iii) discharge it at sea. Today, none of these options are practical.

    By Terragon Environmental Technologies Inc. based in Montréal, QUEBEC (CANADA).

  • Force Main Systems Sulfide Odor Control with Hydrogen Peroxide

    Force main systems are typically high sulfide odor generators due to septicity conditions related to full pipe flow and a greater anaerobic slime layer (biofilm) thickness. Primary factors that influence sulfide loading generation in a force main include sewage temperature, BOD, retention time, pipe size and flow. Gaseous hydrogen sulfide (H2S) release at the force main discharge is usually the main concern related to odor and corrosion control needs; however, corrosion problems within the pipe can be of a concern (e.g. "crown cutting") at locations where air pockets can lead to concentrated H2S gas build up. Some basic considerations for assessing an appropriate sulfide odor treatment method for force main systems include: Retention time / duration of control Pump station type / cycling (e.g. vfd; start/stop, etc). Force main injection tap points, if any (e.g. air relief valves) Existence of intermediate re-lift stations or in series pump stations Manifold force main systems

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

  • 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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