wastewater corrosion Articles

  • Corrosion failure in deep wastewater tunnels: lessons and solutions

    Charleston Water System operates a deep inverted siphon tunnel system to collect and convey wastewater from the downtown peninsula across Charleston Harbor. This paper describes the considerations used in designing a replacement tunnel system for the original system constructed in the early ...

  • Understanding biogenic sulfide corrosion

    It is widely understood that wastewater collection and treatment systems are a source of malodorous odors. The most prevalent odorous gas is hydrogen sulfide (H2S), a toxic and corrosive gas with a characteristic rotten egg odor. What may often be overlooked, however, is that fact that H2S is also a precursor to the formation of sulfuric acid, H2SO4, which causes the destruction of metal and ...


    By Tnemec Company, Inc.

  • Capturing biogas energy to increase your business profits while safeguarding the environment

    Methane is a biogas produced from swine or cow manure, as well as food processing and meat packing waste. Methane is a natural gas, that when left uncollected, contributes to the harmful greenhouse gases in the earth’s atmosphere. When biogas is captured under a cover and becomes concentrated, it creates a corrosive and toxic byproduct called hydrogen sulfide. The gas generates a rotten egg ...

  • Corrosion resistant FRP reduces maintenance issues for water and wastewater treatment and control

    At this Wastewater Treatment Plant in Glendale Heights, IL, an aluminum slide gate had to be forced open using a front-end loader and a chain after seizing in place due to inevitable corrosion. The corrosive bond was so severe that the chain snapped upon the first attempt. The water and wastewater treatment and control industry is a prime example of how constant exposure to toxic elements can and ...


    By Plasti-Fab, Inc.

  • Wastewater force main management – internal corrosion survey using inline methods

    In our first post about Wastewater Force Main Management, we looked at how preliminary analysis helps operators develop a plan for managing their system. After completing this process, operators can begin putting the plan into action with preliminary surveys on specific force mains. For those at WEFTEC, you can visit Pure ...


    By Pure Technologies

  • Wastewater Force Main Management – Internal Corrosion Survey using inline methods

    In our first post about Wastewater Force Main Management, we looked at how preliminary analysis helps operators develop a plan for managing their system. After completing this process, operators can begin putting the plan into action with preliminary surveys on specific force mains. For those at WEFTEC, you can visit Pure ...


    By Pure Technologies

  • Case study - Corrosion protection in a pulp and paper industry

    It is widely accepted that corrosion has an important economic impact at an industrial scale. As an example, results of a study carried out in the US showed that the total annual estimated direct cost of corrosion in the country was $276 billion, which was approximately 3.1% of the nation’s Gross Domestic Product (GDP). Thus, within the last few decades, an important effort has been made to ...


    By Bioconservacion SA

  • Full-scale field trials identify sulfate discharge limits for municipal wastewater odor and corrosion control

    ABSTRACT The Massachusetts Water Resources Authority (MWRA) owns and operates one of the largest wastewater collection and treatment systems in the U.S. serving 45 member communities and operating the 1.2 billion gallon-per-day Deer Island Wastewater Treatment Plant in Boston Harbor. The MWRA has very few odor and corrosion problems so it was unusual when the MWRA encountered a high ...

  • Inhibition effect of phosphorus-based chemicals on corrosion of carbon steel in secondary-treated municipal wastewater

    Secondary-treated municipal wastewater (MWW) could supply a viable alternative water resource for cooling water systems. Inorganic salts in the concentrated cooling water pose a great challenge to corrosion control chemicals. In this study, the inhibition effect of 1-hydroxy ethylidene-1,1-diphosphonic acid (HEDP), trimethylene phosphonic acid (ATMP) and 2-phosphonobutane-1,2,4-tricarboxylic ...


    By IWA Publishing

  • Case histories of using tin technology to control corrosion in water systems

    Stannous chloride is an alternative corrosion control in aqueous systems. Stannous chloride’s effectiveness as a better corrosion inhibitor has been demonstrated in both municipal drinking water and industrial cooling water applications and its use has a reduced impact on rivers and streams. Orthophosphate and other phosphate compounds are the most common treatments for reducing corrosion in ...


    By AS Inc

  • Wastewater solutions for a hospital in Libya

    Continuing the trend of significant growth in Libya for WPL Ltd and El Zulal, the most recent development has been to provide wastewater treatment solutions for a hospital near Ubari. These facilities were provided as part of a co-operation project between El Zulal and the Libyan Government. El Zulal are the local expert distributors and installers for WPL's wastewater treatment solutions across ...


    By WPL Ltd

  • Heat recovery from wastewater

    Heat recovery from gray water is particularly important in water-intensive industries such as pulp and paper plants, dairies and breweries. Rather than flushing used water down the drain, consider whether a heat exchanging system can help you put that energy to work in your process again. Most plant operators arc aware of the need to save money and reduce the environmental impact of their plant ...


    By DDI Heat Exchangers Inc.

  • Wastewater-Primary Treatment

    Primary Treatment is defined as a wastewater treatment process that takes place in a rectangular or circular tank and allows those substances in wastewater that readily settle or float to be separated from the water being treated. This process achieves solids separation. The solids readily available to settle to achieve sedimentation will do so in a settling tank referred as a clarifier. On the ...

  • Skimming Oily Wastewater

    As large generators of oily wastewater tighten effluent controls, the U.S. Environmental Protection Agency (EPA) is targeting smaller generators. Some of the firms receiving their attention are smaller manufacturing plants, automotive garages, mobile equipment service shops and truck farms. Many of these firms do not have access to a sanitary sewer system that will accept oily wastewater. Because ...


    By Abanaki Corporation

  • Utilization of artificial recharged effluent as makeup water for industrial cooling system: corrosion and scaling

    The secondary effluent from wastewater treatment plants was reused for industrial cooling water after pre-treatment with a laboratory-scale soil aquifer treatment (SAT) system. Up to a 95.3% removal efficiency for suspended solids (SS), 51.4% for chemical oxygen demand (COD), 32.1% for Cl− and 30.0% SO42− were observed for the recharged secondary effluent after the SAT ...


    By IWA Publishing

  • Wastewater from drugs production

    The Client In the heart of Germany, the local branch of a pharmaceutical multinational company produces an anaesthetic containing 2,6-Diisopropilphenol (Active Ingredient A), and an antiviral (Active Ingredient B) made up of sodium chloride, citric acid and sodium acid phosphate. Traces of these products are present in the wastewater coming from the cleaning process of the ...

  • Wastewater Level Measurement Techniques

    Level monitoring and control is a fundamental requirement in any wastewater treatment process. You will find level instrumentation installed at even the simplest treatment plants for pump control, chemical storage tanks and process level controls or alarms. Operators have only limited or emergency control over treatment plant influent, so level controls and instrumentation play an important role ...


    By Greyline Instruments Inc.

  • Struvite Formation & Struvite Wastewater Treatment

    The three chemical components for Struvite formation are magnesium, ammonia and phosphorus, also known as MAP for short. Struvite’s chemical formula is NH4MgPO4·6H2O. WWTP managers have used a number of different products and techniques for Struvite removal, and to prevent Struvite formation. Most text books on Struvite control talk about the use of ferric chloride (FeCl3) to control ...


    By Struvite Removal

  • From Wastewater Treatment to Sweet Pineapples

    In wastewater treatment, ammonia that is removed from sewage used to be discharged directly to the atmosphere. Nowadays, studies have identified that ammonia emissions are of major concern to air quality. This has led to a new way of thinking. Sulzer offers modern closed-air-loop systems for wastewater treatment that transform ammonia into a common soil fertilizer. This reuse of a waste product ...


    By Sulzer

  • Sustainable wastewater treatment chemicals in a dairy

    Problem/Definition Atana Ltd has been tasked in reducing sludge generation produced at the sites effluent plant by introducing a new chemical regime. This would bring considerable savings on their daily running costs; reduce the need for hazardous substances and prevent any corrosive issues through the removal of inorganic chemicals. The plant also has consent issues with FOG and ...


    By Atana Limited

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