Water Discharges Articles

  • 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.

  • Case study - E.ON Power Plant Nuremberg

    Water level, water flow and discharge are monitored at two inflows of the E.ON electricity power plan Franken I, using the OTT SLD, with horizontal Doppler-flow sensors. The purpose of this measurement is to optimize the operation of the plan which partly covers the demand for electricity in the conurbation of Nuremberg-Fuerth-Erlangen.  OTT technologies for this project have been in use ...

  • Case study - Discharge measurement at the river

    Due to the seasonally strong weed growth and low flow during low water periods the measurement of water level and flow at the measurement site "Kleinraschuetz“ was rather distorted. It had to be corrected by putting in additional manpower for manual measurements. Therefore it was decided to modernize the station completely and to install a stationary discharge measuring system. The ...

  • 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.

  • Natural radionuclides in waste water discharged from coal-fired power plants in Serbia

    Investigation of the natural radioactivity levels in water around power plants, as well as in plants, coal, ash, slag and soil, and to assess the associated radiation hazard is becoming an emerging and interesting topic. This paper is focused on the results of the radioactivity analysis in waste water samples from five coal-fired power plants in Serbia (Nikola Tesla A, Nikola Tesla B, ...


    By IWA Publishing

  • Monitoring micropollutants in the Swist river basin

    Micropollutant pathways were studied for the Swist river basin (Western Germany). The aim was to verify the effectiveness of a monitoring approach to detect micropollutants entering the river. In a separate sewer system, water was frequently found to be contaminated with micropollutants. Improper connections of sewage canals to the stormwater network seemed to be the cause of pollution. ...


    By IWA Publishing

  • Wastewater treatment plant effluent as a source of microplastics: review of the fate, chemical interactions and potential risks to aquatic organisms

    Wastewater treatment plant (WWTP) effluent has been identified as a potential source of microplastics in the aquatic environment. Microplastics have recently been detected in wastewater effluent in Western Europe, Russia and the USA. As there are only a handful of studies on microplastics in wastewater, it is difficult to accurately determine the contribution of wastewater effluent as a source ...


    By IWA Publishing

  • Case study - TPH in produced sand for overboard discharge

    Customer uses TD-500D to measure TPH concentrations in produced sand on an offshore oil platform in Malaysia.  The sand contains high levels of crude oils and must be treated on-site prior to dumping it overboard.  The TD-500D was calibrated to Sitelab's TPH calibration kit, product CAL-056.  Methanol solvent was used to extract the samples.  For comparison, samples were also ...


    By Sitelab Corporation

  • A modeling study of the influences of Yangtze River and local catchment on the development of floods in Poyang Lake, China

    Poyang Lake, one of the most frequently flooded regions in China, connects with the Yangtze River and the five sub-tributaries in the local catchment. The lake's hydrological regime is complicated by a complex hydraulic connection and strong river–lake interaction, especially for the extreme hydrological regime. This study analyzes the relationships between the lake level changes and the flow ...


    By IWA Publishing

  • Quantifying the effects of channel change on the discharge diversion of Jingjiang Three Outlets after the operation of the Three Gorges Dam

    The Jingjiang Three Outlets (JTO) are the water-sediment connecting channels between the Yangtze River and the Dongting Lake. The discharge diversion of the JTO plays a dominant role in the flood control of the middle–lower Yangtze River, Dongting Lake evolution, and ecological environment. After the operation of the Three Gorges Dam (TGD), the river channels downstream experienced dramatic ...


    By IWA Publishing

  • Case Study - Groundwater Discharge Permit - Plymouth, Massachusetts

    The process of obtaining a groundwater discharge permit for a subdivision scale septic absorption system was faciliated by using the advanced GIS features within EnviroInsite. Geologic features were downloaded and presented at the site scale along with the subdivision boundary and potential downgradient receptors. A cross-section was created showing the detailed soil descriptions, water levels ...


    By EI LLC

  • Sewage pollution in New York, USA: impact of the ‘Right to Know’ Act

    In 2012, New York, USA enacted the Sewage Pollution Right to Know (SPRtK) Act, which requires public notification of untreated and partially treated sewage discharges. With the passing of this law, New York joined 12 other states that have similar laws but none as comprehensive as New York's. As part of the SPRtK Act requirements, aggregated sewage discharge reports (SDRs) are made available ...


    By IWA Publishing

  • The marine environment and ballast water management law

    This article contains a study of international and national measures dealing with the potential threat of pollution and the introduction of alien species that may come from the discharge of improperly treated ballast water. Ballast water management policy, law and coastal biosecurity strategies are considered. There are challenges to achieving the ideals of ballast water laws, as correctly ...


    By IWA Publishing

  • Orange park wastewater plant case study

    Project Summary The Town of Orange Park, Florida was challenged to meet the 2012 Florida TMDL limit of 7 mg/L total nitrogen in the effluent discharge (22,000 pounds N annually). To meet the deadline the Town decided on a three-phase upgrade plan and selected In-Pipe Technology to improve effluent quality during the process improvements and as an alternative solution to the problem of ...

  • Analysis and numerical simulation of natural and human-caused low dissolved oxygen in the Minjiang River Estuary

    The Minjiang River, a typical tidal channel in Southeast China, plays an important role in the supply of drinking water, flood control and drought relief, farming and navigation, as well as shipping and other functions. Dissolved oxygen (DO), as a basic living condition for aquatic biota, has been deteriorating in the Minjiang River in recent years. In order to understand how the spatial ...


    By IWA Publishing

  • Study of groundwater using visual MODFLOW in the Manas River Basin, China

    For effective groundwater management of a basin, it is essential that a careful water balance study be carried out. A three-dimensional transient-state finite difference groundwater flow model is used to quantify the groundwater fluxes and analyze the dynamic changes of groundwater level. After monitoring groundwater levels for 43 typical observation wells through a simulation study of the ...


    By IWA Publishing

  • Discharge sensitivity to snowmelt parameterization: a case study for Upper Beas basin in Himachal Pradesh, India

    Snow- and glacier melt are important contributors to river discharge in high-elevated areas of the Himalayan region. Thus, it is important that the key processes controlling snow and glacier accumulation and melting, are well represented in hydrological models. In this study, the sensitivity of modelled discharge to different snowmelt parameterizations was evaluated. A distributed hydrological ...


    By IWA Publishing

  • Mississippi River Hydraulics associated with the Third Delta Conveyance Channel

    Mississippi River was simulated using USGS River Discharge/ Stages with sobering results obtained when the Third Delta Diversion is in operation and our Government is listing this diversion in recent publications. The Concern: Third Delta calculations show the Mississippi River power will greatly increase undercutting capability of levees downstream of peak meander points. ...


    By IWA Publishing

  • Comparing the photocatalytic process efficiency using batch and tubular reactors in removal of methylene blue dye and COD from simulated textile wastewater

    The aim of this study was photocatalytic degradation of methylene blue (MB) dye using titanium dioxide nanoparticles simulated using ultraviolet in batch and tubular reactors. In this study, the effect of different concentrations of titanium dioxide nanoparticles in the photocatalytic process on MB degradation was examined in batch and tubular reactors. The effect of dye concentration, ...


    By IWA Publishing

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