wastewater treatment chemical Articles

  • Chemical Oxygen Demand and Biochemical Oxygen Demand results in 15 minutes - Case Study

    Arauco, a Chilean pulp and paper company, has been using a PeCOD® Analyzer in full-scale operations since 2013. As a result, the company has reduced the use of hypochlorite in its bleaching processes with no loss of product quality, and decreased the amount of organics in its wastewater stream. The net result was a further reduction in chemicals and energy used in water treatment that saved ...


    By MANTECH

  • 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

  • Sustainable wastewater treatment chemicals in a food processing plant

    A food ingredients manufacturer was using an inorganic aluminium metal salt with pH correction to treat their effluent. This chemical regime refused to give them any real control over their effluent characterisation. Their effluent plant required constant monitoring and adjustment. The inability to control the characterisation of the effluent exiting the site meant non-compliance to the ...


    By Atana Limited

  • Chemical wastewater treatment applying a membrane bioreactor (MBR)

    IntroductionAt the current time Membrane Bioreactors (MBR) are the primary focus of wastewater treatment technologies. MBR is a combination of biological activated sludge process for the removal of nutrients and a membrane filtration for separation of biomass and treated water. In industrial wastewater treatment MBRs have proven to be a particularly reliable technique [Cornel et al., 2006]. The ...


    By MICRODYN-NADIR GmbH

  • Water and Wastewater Treatment Chemicals: World Market Report

    Provides continually updated analyses and forecasts for 11 product categories including activated carbon, chelates corrosion inhibitors, defoamers, ion exchange resins, inorganic flocculants, organic flocculants, oxidizers and biocides, pH adjustors, and scale inhibitors in 80 ...


    By The McIlvaine Company

  • Sustainable wastewater treatment chemicals in a chicken processing plant

    Atana Ltd was invited to evaluate the potential for introducing an organic, sustainable wastewater treatment regime into a chicken processing plant. The flow was approximately 120m³ (over 18 hours per day). The plant killed around 126000 birds per day and the sludge volume produced from their effluent treatment plant (which encompassed dissolved air flotation) per annum was around 13000 ...


    By Atana Limited

  • 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 ...

  • Mirror Plating Wastewater Treatment

    In the manufacturing of certain mirrors, a strong copper solution at low ph is used to apply a thin coating to the glass surface. After adhesion, the excess is washed off and collected as wastewater. The wastewater at this facility is treated using 4 chemicals: caustic to raise the pH to 8.5, DTC (dithiocarbamate) as a metal precipitant, an organic based coagulant, and an anionic flocculant. The ...


    By Integrated Engineers Inc.

  • Rendering Facility Wastewater Treatment

    Food Processing Wastewater Treatment Case Studies Animal & Grease Rendering Plant Wastewater Treatment Net savings of $21,400/month or $256,800 Annually ...


    By Integrated Engineers Inc.

  • Wastewater Treatment: Overview and Background

    SummaryWaste discharges from municipal sewage treatment plants are a significant source of water quality problems throughout the country. States report that municipal discharges are the main source of impairment to estuaries and coastal waters, the second leading source of impaired rivers and streams, and also are a major source of pollution in lakes. Pollutants associated with municipal ...


  • Optimizing Wastewater Treatment

    ' Growing volumes of both industrial and municipal wastewater are being discharged to surface waters but the treatment provided frequently is inadequate to protect the desired uses of the receiving waters. With limited resources in terms of both institutional capacity and finance, governments face difficult choices in optimizing their investments in municipal systems and establishing practical ...


    By The World Bank

  • Physical methods in wastewater treatment

    Physical methods of wastewater treatment are useful in water purification and recycling. We have proposed the role of nanoparticle in combination with ultrasound. Ultrasound (US), nanoparticle (NP) or in combination (US + NP) may offer an attractive proposition in the area of water purification. Ultrasound irradiation applications is that acoustic cavitation can affect a number of mechanical, ...


    By Inderscience Publishers

  • Wastewater Treatment Basics

    Wastewater Treatment Basics A Refresher on The Basic Wastewater Treatment Steps... All wastewater treatment follows the same basic premise, water used in manufacturing, ...


    By Integrated Engineers Inc.

  • Wastewater Treatment & Recycle

    Fresh water is a scarce commodity; this fact is well acknowledged by one and all. People at all levels be it general public, governmental bodies, and industries understand the implications of good quality water availability in terms of quantity, cost and wastage. As a consequence, there is a growing consensus on wastewater treatment for recycle/reuse. This paper briefly describes the treatment ...

  • 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 ...

  • On-site industrial wastewater treatment

    Priority pollutant behaviour in on-site treatment systems for industrial wastewaters The majority of wastewaters deriving from the chemical industry consist of aqueous discharges produced during the physico-chemical processing of synthetic mixtures involving operations such as filtration, centrifugation, extraction and/or distillation. The wastewater streams, referred to as ...


    By IWA Publishing

  • Treatment of Cyanide Bearing Wastewaters

    Water Innovations utilizes a 2-stage Cyanide Oxidation (CN) system that can treat from 2 GPM to 10 GPM. In the first stage of treatment, hypochlorite oxidizes cyanide to cyanate. It consists of two double-wall “Batch” Cyanide Oxidation Tank and an accumulation tank for cyanide-bearing rinse water, each tank equipped with one mixer. Wastewater containing cyanide will be pumped or flow ...


    By Water Innovations, Inc

  • Treatment of olive mill wastewater by chemical processes: effect of acid cracking pretreatment

    The effect of acid cracking (pH 2.0; T 70 °C) and filtration as a pretreatment step on the chemical treatability of olive mill wastewater (chemical oxygen demand (COD) 150,000 m/L; total organic carbon (TOC) 36,000 mg/L; oil–grease 8,200 mg/L; total phenols 3,800 mg/L) was investigated. FeCl3 coagulation, Ca(OH)2 precipitation, electrocoagulation using stainless steel ...


    By IWA Publishing

  • Physico-chemical treatment for the depuration of wine distillery wastewaters (vinasses)

    ABSTRACTIn the present work, an integrated Fenton-coagulation/flocculation process was applied for the depuration of wine distillery wastewaters, commonly known as 'vinasses'. This study evaluates the Fenton process (H2O2/Fe2+), involving oxidation – in a first stage and coagulation/flocculation (using Ca(OH)2 as base-precipitant) – in a second stage ...


    By IWA Publishing

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