Wastewater Monitoring Articles

Flue gas desulfurization (FGD) wastewater treatment by conventional neutralization, chemical precipitation and coagulation process removes most suspended solids and heavy metals, and provides an effluent rich in calcium, alkalinity and chloride, which obstructs its reclamation and reuse but is in favor of phosphorus (P) precipitation. The goals of this study were to investigate feasibility of ...

Jun. 5, 2017

By IWA Publishing

Times are definitely changing. It used to be that wastewater from whatever source – domestic, agricultural, industrial – was something to collect and pipe away as quickly and efficiently as possible. There was more water coming out of the ground or falling from the sky, so why bother investing time and money cleaning water that had already been used? Now, thanks to issues like ...

May 16, 2017

By LuminUltra Technologies Ltd.

The performance of two bench scale activated sludge reactors with two feeding regimes, continuous fed (an up-flow aerobic/anoxic sludge fixed film (UAASFF) bioreactor) and batch fed (sequencing batch reactor (SBR)) with intermittent aeration, were evaluated for simultaneous nutrients (N, P) removal. Three significant variables (retention/reaction time, chemical oxygen demand (COD): N ...

May 12, 2017

By IWA Publishing

Soluble microbial products, consisting of protein, carbohydrate and humics, are generally considered as the main membrane foulants during the performance of membrane bioreactors. Nitrate and nitrite have been proved to affect the determination of carbohydrate when anthrone-sulfuric acid photometric method is used. In this study, three chemical analytical methods based on photometric assay, ...

May 11, 2017

By IWA Publishing

There is a lack of knowledge in environmental pollution of the anthropogenic contaminants in wastewater and surface water. Several organic compounds merit special attention, because of their potential risk to the aquatic environment. Therefore, gas chromatography–mass spectrometry-based screening analyses were performed in order to identify anthropogenic organic contaminants and to reveal ...

May 8, 2017

By IWA Publishing

The aim of this study is to investigate the potential of ultraviolet/visible (UV/Vis) spectrometry as a complementary method for routine monitoring of reclaimed water production. Robustness of the models and compliance of their sensitivity with current quality limits are investigated. The following indicators are studied: total suspended solids (TSS), turbidity, chemical oxygen demand (COD) ...

Apr. 22, 2017

By IWA Publishing

Challenges are not unique to water and wastewater treatment, but the challenges thrown at operators and managers often require equal parts of thoughtfulness and creativity, with dashes of patience and persistence. This is why the industries are “home to some of the most ingenious professionals to be found in any industry,” according to an editorial in Treatment Plant Operator. ...

Apr. 13, 2017

By Fluence Corporation

Ozonation and three (biological) filtration techniques (trickling filtration (TF), slow sand filtration (SSF) and biological activated carbon (BAC) filtration) have been evaluated in different combinations as tertiary treatment for municipal wastewater effluent. The removal of 18 multi-class pharmaceuticals, as model trace organic contaminants (TrOCs), has been studied. (Biological) activated ...

Apr. 10, 2017

By IWA Publishing

Municipal wastewater namely sewage is generated by residential, institutional, commercial and industrial establishments. It includes household waste liquid from toilets,baths,showers,kitchens, and sinks drained into sewers. In many areas, sewage also includes liquid waste from industry and commerce. The separation and draining of household waste into greywater and blackwater is becoming more ...

Apr. 7, 2017

By Horizon Water Co., Ltd.

Author’s note: The terms mill and plant are used interchangeably in this article to describe an industrial manufacturing unit, such as a Pulp & Paper Mill, Petroleum Refinery, Chemical Processing Plant, Meat & Poultry Processing, etc. Plant (or mill) outages come in two types – scheduled and unplanned. Scheduled outages are generally annual affairs at roughly the same ...

Apr. 4, 2017

By Environmental Business Specialists, LLC

This paper covers the pitfalls, recommendations and a new methodology for assessing micropollutant removal efficiencies in wastewater treatment plants. The proposed calculation rules take into account the limit of quantification and the analytical and sampling uncertainty of measured concentrations. We identified six cases for which a removal efficiency value is reliable and four other cases ...

Mar. 29, 2017

By IWA Publishing

The Nordic Wood Biorefinery Conference was held in Stockholm, Sweden during March 28-30, 2017. An abstract presentation authored by partners from VTT, Kemira, FPInnovations and MANTECH was presented during the conference. The PeCOD® Analyzer has the ability to enable pulp and paper mills to improve effluent treatment process and to optimize chemical programs, leading to proper ...

Mar. 28, 2017

By MANTECH

In this research removal of NH3-N, NO3-N and PO4-P nutrients from municipal wastewater was studied, using Chlorella vulgaris, Pseudomonas putida, Bacillus cereus and an artificial consortium of them. The objective is to analyze the performance of these microorganisms and their consortium, which has not been previously studied ...

Mar. 27, 2017

By IWA Publishing

Monitoring and fault detection methods are increasingly important to achieve a robust and resource efficient operation of wastewater treatment plants (WWTPs). The purpose of this paper was to evaluate a promising machine learning method, Gaussian process regression (GPR), for WWTP monitoring applications. We evaluated GPR at two WWTP monitoring problems: estimate missing data in a flow rate ...

Mar. 25, 2017

By IWA Publishing

The microorganism community that grows under duckweed shelter can play an important role on treatment processes. Therefore, the present study aimed to assess the zooplankton dynamic and microbial community in duckweed ponds (DPs) applied for domestic wastewater treatment under open field conditions. A pilot system comprised of two DPs in series (DP1 and DP2), with 10 m2 each, received domestic ...

Mar. 24, 2017

By IWA Publishing

Electrocoagulation (EC) is employed to investigate the energy consumption (EnC) of synthetic wastewater. In order to find the best process conditions, the influence of various parameters including initial pH, initial dye concentration, applied voltage, initial electrolyte concentration, and treatment time are investigated in this study. EnC is considered the main criterion of process ...

Mar. 16, 2017

By IWA Publishing

In most developed countries, wastewater treatment plants are presently utilizing efficient purification technology meeting the sufficiency requirements of quality and quantity. However, in developing countries, the number of wastewater treatment plants is limited. As a result, the establishment of a connection between the wastewater collection system and wastewater purification plants is ...

Mar. 6, 2017

By IWA Publishing

The Model 4700 Automatic Refrigerated Sampler from Teledyne Isco, Inc. is used for water quality monitoring at an industrial park operated by InfraServ Knapsack, Germany InfraServ Knapsack InfraServ GmbH & Co. Knapsack KG is the company that operates the Chemical Industrial Park Knapsack. The site is situated in Huerth, south of Cologne in Germany. The park is divided into ...

Mar. 3, 2017

By Teledyne Isco

The accQmin velocity profiling flow meter from Teledyne Isco, Inc. is key to accurate measurement of flow for billing purposes where primary devices such as flumes can be overwhelmed at times of increased flow. Newark, NJ The Passaic Valley Sewerage Commission (PVSC) operates one of the country’s largest treatment plants for the wastewaters of northern New Jersey, working to ...

Mar. 3, 2017

By Teledyne Isco

An interdisciplinary team of researchers from Stanford University is working on methods to monitor wastewater for the DNA of pathogens such as the flu and other viruses. This could help health agencies prepare early for a disease outbreak instead of waiting until disease symptoms are reported, but for some people is harder to present symptoms since they take health supplements from healthyusa.co ...

Feb. 24, 2017

By Fluence Corporation