oil-in-water event monitor Articles

  • A new online monitoring and management system for accidental pollution events developed for the regional water basin in Ningbo, China

    Due to urgency of the accidental pollution events (APE) on one side and the variability in water quality data on the other side, a new online monitoring and management system (OMMS) was developed for the purpose of sustainable water quality management and human health protection as well. The Biological Early Warning System (BEWS) based on the behavioral responses (behavior strength) of medaka ...


    By IWA Publishing

  • Singular system analysis of the Local Power Range Monitor (LPRM) readings of a Boiling Water Reactor (BWR) in an unstable event

    Singular system analysis is a successful technique to separate oscillating components from a given signal. A methodology is proposed to apply this technique to the signals obtained from the LPRMs of a boiling water reactor core and extract the contributions of the in-phase oscillation and the out-of-phase oscillations from the LPRM readings during an unstable event. This methodology has been ...


    By Inderscience Publishers

  • Events organisers committed to green - case study

    Stillwater Sport and Entertainment approached NCC in 2009 to assist with writing up an Environemental Management Plan for the ProNutro African Xtrail. Stillwater Sport and Entertainment, a leader in the event management and brand activation industry, strives for bigger, better green events with the endorsement and assistance of NCC Environmental Services. Stillwater Sport and Entertainment ...

  • Integrated actions in the management of critical hydrologic events

    Owing to the increase in urban populations, there has also been an increased incidence of critical events, especially those related to floods and landslides. Since the implementation of the National Civil Defense System in Brazil, a focus on disaster management is no longer the answer when assisting those affected; instead, the answer has become managing disaster risk, in addition to the ...


    By IWA Publishing

  • Understanding and Monitoring Hydrocarbons in Water

    Untitled Document 1. Introduction Oil contamination continues to be a very hot topic, due largely in part to recent catastrophic events with shipping ...


    By Arjay Engineering Ltd.

  • Dust monitoring

    Generally, two different approaches are used to measure the amount of dust deposited on a surface; Determination of the soiling of a surface, by a change in its properties; Determination of the quantity of dust deposited, by weight. WHAT IS DUST? Dust is a generic term used to describe fine particles that are suspended in the atmosphere. Dust comes from a wide variety of sources, including soil, ...


    By Queensland Laboratory

  • Treatment performance of a constructed wetland during storm and non-storm events in Korea

    The efficiency of a free water surface flow constructed wetland (CW) in treating agricultural discharges from stream was investigated during storm and non-storm events between April and December, 2009. Physico-chemical and water quality constituents were monitored at five sampling locations along the flow path of the CW. The greatest reduction in pollutant concentration was observed after passing ...


    By IWA Publishing

  • Temporal variability of two contrasting transient pollution events in a pastoral stream

    Two transient pollution events were monitored in a pastoral stream in southwestern Kenya to evaluate their relative contribution to diffuse pollution. Peak loads of pollutants during storm-induced transients were within 3–4 orders of magnitude higher than the short-lived (30–60 minutes) diurnal episodes provoked by in-stream activities of people and livestock. Transient yields were striking ...


    By IWA Publishing

  • Water Distribution System Security Monitoring

    A water security instrument essentially needs to be able to detect potential contaminants in drinking water. Since a significant number of potential chemical contaminants are organic in nature, a water security monitoring instrument that can detect organic matter in water is perfect for this application. Real Tech has developed an instrument specifically designed for water security ...


    By Real Tech Inc.

  • Virus contamination from operation and maintenance events in small drinking water distribution systems

    We tested the association of common events in drinking water distribution systems with contamination of household tap water with human enteric viruses. Viruses were enumerated by qPCR in the tap water of 14 municipal systems that use non-disinfected groundwater. Ultraviolet disinfection was installed at all active wellheads to reduce virus contributions from groundwater to the distribution ...


    By IWA Publishing

  • Evaluating the performance of water purification in a vegetated groundwater recharge basin maintained by short-term pulsed infiltration events

    Infiltration of surface water constitutes an important pillar in artificial groundwater recharge. However, insufficient transformation of organic carbon and nutrients, as well as clogging of sediments often cause major problems. The attenuation efficiency of dissolved organic carbon (DOC), nutrients and pathogens versus the risk of bioclogging for intermittent recharge were studied in an ...


    By IWA Publishing

  • Sewer Level Monitoring - Photos

    Sewer Level Monitoring - Photos Photos in this article present the complexity and versatility of sewer level monitoring. When examining the photos, pay special attention to the stand-alone autonomous characteristics of each installation. In lack of any cabling from the outside, whether data cables or power cables, the solution is fed from its own battery power supply. Data is tranmitted ...

  • Monitoring Tools for Watershed Assessments

     Weston Solutions, Inc. (WESTON®) has designed and implemented a watershed-based monitoring program with the San Diego County Copermittees. The monitoring program includes three elements: Mass Loading Station (MLS) Monitoring, Stream Bioassessment Monitoring, and Ambient Bay and Lagoon Monitoring. The core program includes the collection and analysis of stormwater runoff during three storm ...


    By Weston Solutions, Inc

  • Monitoring watershed health

    Background Municipal water quality managers recognize the need for data that can be used to monitor and assess the impact of urbanization on the condition of natural watersheds. Storm events, in conjunction with the alteration of native landscape, building of roads and overuse of fertilizer, can contribute to excess nutrients, sediment and other pollutants in environmentally significant ...

  • Monitoring outfalls to Bathing Waters - Case study

    Bathing Water Catchment monitoring Date:2010 Location: Bude Cornwall UK Purpose: To carry out a river survey identifying potential pollution sources and their likely impact on bathing waters downstream. Background STS and the Environment Agency have, for some time, been discussing the issue of monitoring water courses which discharge directly into bathing waters. Of ...


    By Safe Training Systems Ltd

  • Grille Monitoring in Scottish Borders

    Hydro-Logic was appointed to supply 4 trash screen monitors to the Scottish Borders Council. They were installed to monitor the level upstream of the screens and to provide alarms when the level reached a set threshold. This alarm was to be used by the council to indicate a build up of debris in front of the screen that would have created a flood risk potential. The alarms are transmitted along ...

  • Selection of monitoring locations for storm water quality assessment

    Storm water runoff is a major contributor to the pollution of receiving waters. Storm water characteristics may vary significantly between locations and events. Hence, for each given location, this necessitates a well-designed monitoring campaign prior to selection of an appropriate storm water management strategy. The challenge for the design of a monitoring campaign with a given budget is to ...


    By IWA Publishing

  • From mess to mass: a methodology for calculating storm event pollutant loads with their uncertainties, from continuous raw data time series

    With the increasing implementation of continuous monitoring of both discharge and water quality in sewer systems, large data bases are now available. In order to manage large amounts of data and calculate various variables and indicators of interest it is necessary to apply automated methods for data processing. This paper deals with the processing of short time step turbidity time series to ...


    By IWA Publishing

  • Water monitoring as a safety feature for nuclear desalination

    It is widely accepted that the general safety approach for nuclear facilities is valid for a Nuclear Desalination Plant (NDP), thus IAEA standards and guides are applicable. The coupling of a NDP should be designed with the safety objective of ensuring that it results in no adverse effect on the Nuclear Power Plant (NPP) safety. The first objective (provisions of barriers) is complied with by the ...


    By Inderscience Publishers

  • Assessing dry weather flow contribution in TSS and COD storm events loads in combined sewer systems

    Continuous high resolution long term turbidity measurements along with continuous discharge measurements are now recognised as an appropriate technique for the estimation of in sewer total suspended solids (TSS) and Chemical Oxygen Demand (COD) loads during storm events. In the combined system of the Ecully urban catchment (Lyon, France), this technique is implemented since 2003, with more than ...


    By IWA Publishing

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