wastewater influent Articles

  • Performance of an ultra-compact biofilm reactor treating domestic and synthetic wastewaters

    The performance of an ultra-compact biofilm reactor (UCBR) treating domestic wastewater (DWW) collected from a local water reclamation plant; and gradually shifting to a mono-type carbon source synthetic wastewater (SWW) combined with DDW (CWW) and finally SWW; was investigated in this study. The total COD concentrations of influent DWW and CWW/SWW were 413.6 ± 80.8 mg/L and 454.9 ± 51.3 mg/L, ...


    By IWA Publishing

  • UCT XtrackT® Sorbent Cited in Drugs in Wastewater Article

    Environmental analysts are often tasked with the evaluation of illicit and prescription drugs in wastewater samples in an attempt to better understand the epidemiology of a populated area. Due to the challenging consistency of this matrix, clean-up is often vital in order to achieve accurate detection. In a recent paper authored by Richard Bade et al., published in Analytical and ...


    By United Chemical Technologies

  • Pathogenic parasites and enteroviruses in wastewater: support for a regulation on water reuse

    Brazilian regulations for nonpotable reuse are being established using World Health Organization guidelines, however, they should be developed based on local monitoring studies. This study intended to analyze enteroviruses, protozoa and viable Ascaris sp. eggs in raw (24) and treated (24) effluents from four Wastewater Treatment Plants of São Paulo State, Brazil. The protozoa were ...


    By IWA Publishing

  • Bayesian modeling of virus removal efficiency in wastewater treatment processes

    Left-censored datasets of virus density in wastewater samples make it difficult to evaluate the virus removal efficiency in wastewater treatment processes. In the present study, we modeled the probabilistic distribution of virus removal efficiency in a wastewater treatment process with a Bayesian approach, and investigated how many detect samples in influent and effluent are necessary for ...


    By IWA Publishing

  • Wastewater treatment using bioreactor with dual functional ceramic membrane

    A novel bioreactor including a group of dual functional ceramic membranes was developed and used for wastewater treatment. The ceramic membranes could be used for both aeration and filtration alternately, so fouling to ceramic membrane would be palliated effectively as its dual functions. For 100 days operation, COD removal ratio was 88∼97% for influent COD of 154∼1389 mg/L, and NH4+-N removal ...


    By Inderscience Publishers

  • Oil skimmers solutions guide: wastewater treatment industry

    Growing Snack-Food Manufacturer Reduces Costs, Recycles Waste A privately held snack-food manufacturer in Ohio expected to increase production of potato chips by 20%, to about 72 million pounds a year. While more potato chips would mean more profits, it also would mean more oil-laden wastewater from washing the potatoes and the fryers used to cook them. PROCESS: When ...


    By Oil Skimmers, Inc.

  • Biodegradation of organic compounds from coking wastewater with UASB reactor

    The UASB reactor was applied for biodegradation of organic compounds in coking wastewater. The influent pH ranged between 6.8 and 7.2, and stirring speed and temperature were controlled at 2 r/min and 30±1°C, respectively. The reactor was successfully started up in 133 days. When the influent COD was 2,600 mg/L (VLR was 2.6 kg/m3 d), the removal rate of COD was about 54% and the effluent VFA was ...


    By IWA Publishing

  • Practical automatic control of a sequencing batch reactor for toxic wastewater treatment

    This paper investigates the application of a practical and robust control strategy for the operation of a sequencing batch reactor (SBR) used for toxic wastewater treatment. The strategy sets the operational conditions of the SBR based on the on-line information collected during the previous batch. In particular, it sets the exchange volume of the reactor, as well as the batch reaction duration ...


    By IWA Publishing

  • Degradation of organic matter from domestic wastewater with loofah sponge biofilm reactor

    A laboratory-scale oxic biofilm reactor using loofah sponge as support material was carried out to study its start-up characteristics and the optimum operation parameters in removing organic matter and nitrogen from domestic wastewater. It took no more than 10 days to complete microbiological cultivation and acclimation, indicating that the natural loofah sponge was a superior support material ...


    By IWA Publishing

  • Continuous flow aerobic granular sludge reactor for dairy wastewater treatment

    The focus of this study was to assess the treatment performance and granule progression over time within a continuous flow reactor. A continuous flow airlift reactor was seeded with aerobic granules from a laboratory scale sequencing batch reactor (SBR) and fed with dairy wastewater. Stereomicroscopic investigations showed that the granules maintained their integrity during the experimental ...


    By IWA Publishing

  • Sulfidogenesis interference on methane production from carbohydrate-rich wastewater

    Two anaerobic fixed-structured bed reactors were fed with synthetic wastewater simulating the soluble fraction of sugarcane vinasse to evaluate the interference of sulfidogenesis on methanogenesis. The reactors running in parallel were subjected to the same operating conditions. The influent organic matter concentration (in term of chemical oxygen demand (COD)) remained close to 4,000 mgCOD ...


    By IWA Publishing

  • A high efficiency combined biological & membrane process for wastewater reuse

    The current trend in combined biological / membrane processes is to challenge the membrane with a high fouling environment, resulting in very costly operating procedures which are required to limit the membrane fouling rates. The MBR requires high membrane area, high energy consumption, excessive pre-screening and large equalization basins. Increasing economic, environmental and political ...


  • Factors affecting population of filamentous bacteria in wastewater treatment plants with nutrients removal

    Filamentous population in activated sludge and key operational parameters of full-scale municipal wastewater treatment plants (WWTPs) with bulking problems representative for Poland were investigated with quantitative fluorescence in situ hybridization. Statistical analyses revealed few relationships between operational parameters and biovolume of filamentous bacteria. Sludge age was not only ...


    By IWA Publishing

  • Noses for Surveillance of Wastewater from Secondary Treatment Plants in Alexandria, Egypt

    Intermittent discharges of industrial chemical pollutants into sewers can have a damaging effect on the processes involved in treating wastewater. They are sometimes able to pass through treatment plants and enter into the receiving water, to exert a harmful effect on the environment and possibly pass down a river to the intakes forwater supplies. We evaluated the use of an electronic ...


    By PCA Technologies SRL

  • Linking sanitation and wastewater treatment: from evaluation on the basis of effluent pollutant concentrations to evaluation on the basis of pollutant removal efficiencies

    The evaluation of centralised wastewater treatment plants (WWTPs) in planning and management is sometimes based solely on effluent pollutant concentrations or pollutant loads. For sanitation purposes, the effluent pollutant concentrations/loads of WWTPs are important; of course, but from the point of view of wastewater treatment, the pollutant removal performance should also be evaluated. ...


    By IWA Publishing

  • Full-scale wastewater treatment plant simulation for real-time optimization

    A dynamic simulation model has been developed and validated for the 1.4 million p.e. capacity Budapest Central Wastewater Treatment Plant to support intensification, process development and risk assessment. By the integration of both the biological and physico-chemical processes the technological design of separated units becomes possible as well as the exploration of the connections within ...


    By IWA Publishing

  • Removal of ecotoxicity and COD from tank truck cleaning wastewater

    Tank truck cleaning (TTC) activities generate highly complex wastewater. In a previous study, we found that a significant ecotoxic effect was still present in biologically treated TTC wastewater. The aim of the present study was therefore to investigate the removal of acute toxicity from TTC wastewater by a sequence of technologies routinely applied for industrial wastewater. Acute toxicity was ...


    By IWA Publishing

  • Foaming and filament reduction at a municipal wastewater treatment plant case study

    Before Subject: Reducing foam and filaments at a municipal wastewater treatment plant. Product Applied: MICROCAT-DNTRF Fat, Oil and Grease Degrading Bioformula Objective: Reduce the filament infestation and foaming caused by excessive fat, oil and grease in the influent wastewater coming into the treatment plant. ...


    By Bioscience, Inc.

  • Upgrading of Kish Island Markazi wastewater treatment plant by MBBR

    The potential of a moving bed biofilm reactor (MBBR) in full scale has been investigated as an alternative for upgrading of the Kish Island Markazi wastewater treatment plant. In this regard, the activated sludge process (ASP) upgraded to an MBBR process and different operating parameters results in this change compared with ASP. Results show that with increasing the average flow influent from ...


    By IWA Publishing

  • Removal of phthalates and pharmaceuticals from municipal wastewater by graphene adsorption process

    In this work graphene was used for evaluation of its adsorption behavior and performance in removing phthalate esters and pharmaceuticals in municipal wastewater. Di-n-butyl phthalate (DnBP), di-(2-ethylhexyl) phthalate (DEHP), acetaminophen (ACE), caffeine (CAF), cephalexin (CLX), and sulfamethoxazole (SMX) were emerging contaminants (ECs) with detection frequencies over 92% in a one-year ...


    By IWA Publishing

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