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. ...

Mar. 16, 2015

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 harmful diseases ...

Jun. 12, 2020

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 tools (MBTs). Examples of the benefits of population dynamics research in improving the performance and aiding the design and operation of biological wastewater treatment processes are ...

Oct. 13, 2007

By Water Environment Federation (WEF)

Hospital Wastewater Treatment Process

1. The characteristics of hospital sewage Hospital waste water contains some special pollutants, such as drugs, disinfectants, diagnostic agents, detergents, and a large number of pathogenic microorganisms, parasite eggs and various viruses (such as roundworm eggs, hepatitis virus, tuberculosis and dysentery) . In addition, there are radioactive substances such as radium 226, phosphorus, gold ...

Feb. 22, 2021

By Guangzhou Shincci Energy Equipment Co., Ltd.

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 production of hydroxyl radicals and also hydrogen ...

Apr. 3, 2014

By GlobeCore GmbH

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 dissemination. Most studies on ...

Aug. 5, 2015

By IWA Publishing

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 ...

Jul. 22, 2017

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 ...

Aug. 1, 2015

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 ...

Nov. 18, 2011

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 historical background, up to the ...

Jul. 4, 2011

By IWA Publishing

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 ...

Feb. 1, 2011

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 ...

Feb. 19, 2014

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 ...

Dec. 3, 2012

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 ...

Feb. 1, 2012

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 ...

Sep. 25, 2007

By S&N Airoflo Inc.

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 morphology of H. pylori was confirmed ...

Feb. 22, 2016

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. ...

Jun. 25, 2015

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. ...

Jun. 25, 2015

By IWA Publishing

Anaerobic MBR process monitoring - ADI Systems Case Study

SENTRY-AD bio-electrode sensor (BES) that monitors the microbial metabolic activity of exoelectrogenic bacteria and can be used in anaerobic digestion wastewater treatment processes. The data collected aids operators ...

Sep. 10, 2019

By Island Water Technologies Inc. (IWT)

Anaerobic MBR process monitoring - ADI Systems - Case Study

SENTRY-AD bio-electrode sensor (BES) that monitors the microbial metabolic activity of exoelectrogenic bacteria and can be used in anaerobic digestion wastewater treatment processes. The data collected aids operators ...

Mar. 10, 2018

By Sentry