wastewater treatment process Articles

  • Wastewater Treatment Process

    The wastewater treatment process is complex and critical to civilization. In simplest terms, wastewater is water that has been mixed with waste matter. Wastewater can be classified as domestic, municipal, or industrial based upon the source of generation. For instance, domestic wastewater comes from everyday liquid waste, including water used to flush the toilet, to shower, or to wash dishes. ...


    By Brentwood Industries, Inc.

  • The Wastewater Treatment Process

    What is Wastewater? Wastewater is classified as used water from any combination of domestic, industrial, commercial, agricultural activities, surface runoff, or storm water. The wastewater treatment process removes the contaminants from the wastewater and converts it into an element that can be returned to the water cycle with minimum impact on the environment. Water can carry ...


    By Thern Inc

  • From TSS to MBTS and beyond – a Personal View of Biological Wastewater Treatment Process Population Dynamics

    ABSTRACT   The development of the tools needed to study the population dynamics of biological wastewater treatment processes is traced from its beginnings in the early 1900’s to today’s use of molecular biology ...

  • 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

  • Removal of Cryptosporidium by wastewater treatment processes: a review

    Cryptosporidium is a protozoan parasite that infects humans and various animal species. The environmental stability and the low infectious dose of Cryptosporidium facilitate its transmission by water and food. Discharge of untreated wastewater may result in waterborne or foodborne Cryptosporidium outbreaks, therefore a suitable treatment may prevent its ...


    By IWA Publishing

  • Cavitational technology in wastewater treatment process

    Cavitation is one such recent technique which has been found to be substantially beneficial in wastewater treatment. Cavitation can be described as formation, growth and sub-sequent collapse of cavities releasing large magnitudes of energy locally, creating conditions similar to hot spots, and also generating strong oxidizing conditions by way of ...


    By GlobeCore GmbH

  • Research on a soft measurement model of sewage treatment based on a case-based reasoning approach

    In this paper, the measurement of biochemical oxygen demand (BOD) in a wastewater treatment process is analyzed and an intelligent integrated prediction method based on case-based reasoning (CBR) is proposed in order to overcome difficulties. Due to the fact that there are many factors that influence the accuracy of the prediction model, the radial basis function, which is a neural network ...


    By IWA Publishing

  • Survival of Helicobacter pylori in the wastewater treatment process and the receiving river in Michigan, USA

    Contaminated water may play a key role in the transmission of Helicobacter pylori, resulting in gastrointestinal diseases in humans. The wastewater treatment process is an important barrier to control the transmission of H. pylori. However, the presence and viability of H. pylori in the treatment process is not well known. In this paper, the real colony ...


    By IWA Publishing

  • Aerobic wastewater treatment processes history and development synopsis

    A Synopsis by the Author This book is an overview of the development of aerobic waste water treatment and influences which shaped this development.   The historical development of sewage treatment and the subsequent emergence of aerobic biological treatment methods is investigated from the early nineteenth century to the present day.  In addition, the earlier ...


    By IWA Publishing

  • Aerobic wastewater treatment processes history and development synopsis

    This book is an overview of the development of aerobic waste water treatment and influences which shaped this development. The historical development of sewage treatment and the subsequent emergence of aerobic biological treatment methods is investigated from the early nineteenth century to the present day. In addition, the earlier historical background, up to the late ...


    By IWA Publishing

  • Energy consumption model for wastewater treatment process control

    Wastewater treatment must satisfy discharge requirements under specified constraints and have minimal operating costs (OC). The operating results of wastewater treatment processes (WWTPs) have significantly focused on both the energy consumption (EC) and effluent quality (EQ). To reflect the relationship between the EC and EQ of WWTPs directly, an extended Elman neural network-based energy ...


    By IWA Publishing

  • The use of response surface methodology for modelling and analysis of water and wastewater treatment processes: a review

    In recent years, response surface methodology (RSM) has been used for modelling and optimising a variety of water and wastewater treatment processes. RSM is a collection of mathematical and statistical techniques for building models, evaluating the effects of several variables, and obtaining the values of process variables that produce desirable values of the response. This paper reviews the ...


    By IWA Publishing

  • ENHANCING THE PERFORMANCE OF OXIDATION DITCHES

    Oxidation ditches are very popular wastewater treatment processes for small to mediumsized municipalities that have to meet stringent water quality standards. Oxidation ditches provide cost-effective treatment while requiring relatively simple operational skills. Because carbonaceous BOD removal, nitrification, and de-nitrification can be accomplished within a single reactor, the process can ...


    By S&N Airoflo Inc.

  • Treatability and fate of various phosphorus fractions in different wastewater treatment processes

    The increasingly more stringent phosphorus (P) discharge limits, which are below the concentrations reliably achievable with currently available technologies, demand for better understanding of phosphorus removal mechanisms. This study investigated the compositional fractions of phosphorus (P) in various effluents as well as the efficacy of different levels of treatment processes for removing ...


    By IWA Publishing

  • Economic feasibility study for new technological alternatives in wastewater treatment processes: a review

    The concept of sustainability involves the integration of economic, environmental, and social aspects and this also applies in the field of wastewater treatment. Economic feasibility studies are a key tool for selecting the most appropriate option from a set of technological proposals. Moreover, these studies are needed to assess the viability of transferring new technologies from pilot-scale to ...


    By IWA Publishing

  • Pesticide removal through wastewater and advanced treatment: full-scale sampling and bench-scale testing

    Dieldrin and DDx removal through wastewater treatment, ozonation, and microfiltration was assessed for a water reuse project for groundwater replenishment in Monterey, California, USA. Full-scale sampling was conducted at the wastewater treatment plant, and physical wastewater treatment processes, ozonation, and microfiltration were tested at the bench scale. Removals observed through ...


    By IWA Publishing

  • Treatment matrix for reuse of upgraded wastewater

    ABSTRACTIn 2003 the Aquarec project sponsored by the European Commission under the 5th Framework Programme was started, aiming at “integrated concepts for reuse of upgraded wastewater with special focus on the European countries”. One of the key elements is the development of a treatment matrix, in which wastewater treatment processes are categorised as a function of the raw wastewater quality ...


    By IWA Publishing

  • Microbiology: The Key to Wastewater treatment case study

    The biological treatment of wastewater relies mainly on a consortium of heterotrophic and autotrophic bacteria. The fecal bacteria that are constantly introduced into the collection system are not the optimal bacteria for degrading the contaminants present in wastewaters. The soil bacteria that are introduced through inflow and infiltration are more effective at degrading the wastes and can ...

  • Variation in water density related to pollutants removal in wastewater treatment processes and its use in explaining the working principles of the Unifed SBR

    The wastewater quality of several municipal wastewater treatment plants (MWTPs) in Beijing was studied, and the water densities of different processing units were also measured during the wastewater treatment process. The results clearly showed that the water density declined from influent to effluent of the wastewater treatment process. Meanwhile, the variation in water density had good ...


    By IWA Publishing

  • Development of a new wastewater treatment process for resource recovery of carotenoids

    A new wastewater treatment process that involves coagulation, ozonation, and microalgae cultivation has been developed. Here, two challenges are discussed. The first was minimizing phosphorus removal during coagulation in order to maximize algal production. The second was to optimize microalgae cultivation; algal species that grow rapidly and produce valuable products are ideal for selection. ...


    By IWA Publishing

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