Zero-Discharge Articles

  • Cartonneries de Gondardennes - Case Study

    Biological treatment in closed circuit improves paper quality Cartonneries de Gondardennes was founded in 1897 and is still a family owned business. The mill in Wardrecques, France, operated for many years at zero discharge. But when paperboard quality was affected by process contamination, it was decided to install biological process water treatment. Paques installed a turnkey treatment ...


    By Paques B.V.

  • Purolite A120S is Integral to Zero Liquid Discharge Systems in the Textile Dyeing Industry

    Purolite A120S is integral to zero liquid discharge systems in the textile dyeing industry. Used for reduction of color, Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) from textile dye waste water, the resin removes color through the mechanisms of ion exchange, adsorption and filtration. Subsequent ...


    By Purolite Corporation

  • Seasonal movement of trace-element discharge in a typical south-Indian suburban community

    Four conventional activated sludge sewage treatment plants (STPs) in Southern India were chosen to investigate the occurrence of major ions and trace metals in dissolved fraction of the wastewater. Samples were collected from inlet and outlet of STPs during the pre-monsoon and monsoon seasons. Except for a few elements (Mn, Mo and Ni), the concentrations of the rest increased at the outlet of ...


    By IWA Publishing

  • Preparation of magnetic carbon/Fe3O4 supported zero-valent iron composites and their application in Pb(II) removal from aqueous solutions

    Nanoscale zero-valent iron (NZVI) was first assembled on magnetic carbon/Fe3O4 (CM) with a combination of hydrothermal and liquid phase reduction methods. The novel NZVI@CM magnetic nanocomposites have the merits of large surface area, unique magnetic property, low cost and environmental friendliness. They can be used for Pb(II) removal in aqueous solution. The materials were ...


    By IWA Publishing

  • Removal of chromium(III) from aqueous waste solution by liquid–liquid extraction in a circular microchannel

    A new circular microchannel device has been proposed for the removal of chromium(III) from aqueous waste solution by using kerosene as a diluent and (2-ethylhexyl) 2-ethylhexyl phosphonate as an extractant. The proposed device has several advantages such as a flexible and easily adaptable design, easy maintenance, and cheap setup without the requirement of microfabrication. To study the ...


    By IWA Publishing

  • What Is Zero Liquid Discharge and How Does It Work?

    Not every industrial facility that produces wastewater will require zero liquid discharge (ZLD). It is usually looked to as a last resort because it can be a complex process that requires a high initial investment. If a facility is located on a site that has severe water scarcity issues and/or astronomical discharge fees, it might be ...


    By SAMCO Technologies, Inc.

  • Does your facility need Zero Liquid Discharge Technology?

    If your industrial facility discharges its waste into deep wells, streams, sewers to publicly owned treatment works (POTWs), and/or other waterways, it is likely there are some types of regulations on discharging the waste. With an increasing push toward environmental protection, many industrial facilities and effluent regulators are strengthening strategies to reduce industrial process waste. ...


    By SAMCO Technologies, Inc.

  • Five common problems with zero liquid discharge and how to solve them

    As more and more facilities are turning to zero liquid discharge (ZLD) for wastewater treatment and effluent reduction—whether it’s to comply with local discharge regulations or recycle and reuse as much water as possible in your process—more information is becoming available about the possible issues your facility might face while using ZLD technology. Because of the scope of ...


    By SAMCO Technologies, Inc.

  • Treating pharmaceutical wastewater - Case Study

    A pharmaceutical facility in the Caribbean had an existing wastewater treatment process that utilized a sequencing batch reactor (SBR). SBRs use large tanks to collect wastewater, then a number of different options can be employed to treat the water (such as chemicals addition, aeration and mixing). When an SBR aerobically breaks waste down, it can produce a high volume of air that needs to be ...

  • What are the best companies for Zero Liquid Discharge Equipment and Technology?

    With an increasing push for environmental protection, many industrial facilities and effluent regulators are making decisions that lessen their impact on the environment and human health. Changes and implementations are constantly being discussed and met both nationally and internationally to change the way industrial facilities discharge waste, and it is important to know which companies are the ...


    By SAMCO Technologies, Inc.

  • How much will a zero liquid discharge system cost your facility?

    With increasing stewardship of environmental protection, both nationally and internationally, many industrial facilities and effluent regulators are strengthening strategies to reduce industrial process waste by implementing zero liquid discharge (ZLD), a process that limits liquid waste at the end of your industrial process to—as the term suggests—zero. A ...


    By SAMCO Technologies, Inc.

  • Ten quotes from our customers about VACUDEST

    Many companies have opted to introduce a policy of zero liquid discharge production using our high-quality VACUDEST vacuum distillation systems. Users can reduce their consumption of fresh water – an increasingly dwindling resource – and significantly reduce their disposal costs by recycling their industrial wastewater. Read on to find out what our customers say about VACUDEST: Ovidio ...


    By H2O GmbH

  • Heavy metal removal from wastewater using various adsorbents: a review

    Heavy metals are discharged into water from various industries. They can be toxic or carcinogenic in nature and can cause severe problems for humans and aquatic ecosystems. Thus, the removal of heavy metals from wastewater is a serious problem. The adsorption process is widely used for the removal of heavy metals from wastewater because of its low cost, availability and eco-friendly nature. ...


    By IWA Publishing

  • Optimization of atmospheric air plasma for degradation of organic dyes in wastewater

    This study optimises the degradation of a cocktail of the dyes methyl orange and bromothymol blue by atmospheric air plasma. Response surface methodology (RSM) was employed to investigate the efficacy of the plasma process parameters on degradation efficiency. A Box–Behnken design (BBD) was employed to optimise the degradation of dyes by air plasma discharge. A second order polynomial equation ...


    By IWA Publishing

  • Antifreeze Liquid Production: Start Your Own Business

    In some areas the cold period can last for up to eight months. Sub-zero temperatures are recorded even in October. This fact makes a small antifreeze production business quite promising. Why do we need non-freezing liquids? One important area of antifreeze liquid us is cleaning of car windscreens (windscreen cleaners). Another is cooling of the ...

  • Antibiotic Production Wastewater Zero Liquid Discharge Of Disc Tube SUPER RO

    Project address: Inner Mongolia in China Inflow:6300 ton per day(the largest antibiotic wastewater zero discharge project in Asia) Acceptance time:1,2015 Process: UF+RO+SUPER RO+ ...


  • Phthalate degradation by glow discharge plasma enhanced with pyrite in aqueous solution

    In order to prevent health risk from potential exposures to phthalates, a glow discharge plasma (GDP) process was applied for phthalate degradation in aqueous solution. The results revealed that the phthalate derivatives 4-hydroxyphthalic acid, 4-methylphthalic acid and 4-tert-butylphthalic anhydride could be degraded efficiently in GDP process (498 V, 0.2 A) with high removal efficiencies of ...


    By IWA Publishing

  • Ten top tips to achieve zero liquid discharge production

    Sustainability is the hot topic of our time. In a world of dwindling natural resources, taking environmental responsibility is absolutely essential. That’s why it is up to companies to take responsibility for operating in a sustainable manner. Modern wastewater processing systems allow industrial companies to re-use their treated wastewater in production. Read the top ten tips for the ...


    By H2O GmbH

  • Nanoscale zero-valent iron incorporated with nanomagnetic diatomite for catalytic degradation of methylene blue in heterogeneous Fenton system

    Nanoscale zero-valent iron (nZVI) incorporated with nanomagnetic diatomite (DE) composite material was prepared for catalytic degradation of methylene blue (MB) in heterogeneous Fenton system. The material was constructed by two facile steps: Fe3O4 magnetic nanoparticles were supported on DE by chemical co-precipitation method, after which nZVI was incorporated into magnetic DE by ...


    By IWA Publishing

  • Case study - Daphne utilities water reclamation facility

    With significant TSS and BOD reductions from their Salsnes Filter system, Daphne Utilities has restored previously lost plant capacity. More than that, loading reductions have cut back aerator maintenance and lowered energy consumption of blowers. Project Background Daphne Utilities, situated on the eastern shore of Mobile Bay in Alabama, provides water, sewer and natural ...

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