wastewater treatment plants wwtp Articles

Estimating odour impact range of a selected wastewater treatment plant for winter and summer seasons in Polish conditions using CALPUFF model

Odour emission from wastewater treatment plants (WWTP) is a common cause of odour nuisance to neighbouring areas. The analysed object was mechanical biological WWTP designed for 1,200,000 population equivalent. Collection of the samples was carried out in accordance with the methodology described in VDI 3880 and PN-EN 13725 during the rainless weather. Odour concentration measurement was made ...

Oct. 16, 2014

By Inderscience Publishers

How wastewater treatment plants work with SewaTOR?

The current state of waste water treatment in the EU Sewage treatment is facing challenges such as climate change, low resource efficiency and poor environmental and human protection. More than 30 million people are not connected to wastewater treatment plants (WWTP) in the EU yet. EU water body quality is still low ecologically and chemically not fulfilling current water directives. Moreover, ...

May 13, 2021

By SewaTOR by Three-es Srl

Preference for Chlorine Gas for Disinfection Supported by Gas Leak Containment Vessels

The superintendent of an average 4 MGD activated sludge wastewater treatment plant (WWTP) reports that his preference for using chlorine gas as his most cost-effective option for primar y disinfection has been further supported by enhanced management of gas leak ...

Feb. 1, 2017

By ChlorTainer, Inc

Algae control in an open balance tank - Case Study

High algae concentrations create problems for process performance and increase operating expenditure for cleaning and maintenance activities. Several LG Sonic e-line devices were installed in a Wastewater Treatment Plant (WWTPs) in Melbourne, Australia in order to control algal blooms. The Challenge: Control Algal Blooms and Lower Maintenance Costs One of the main challenges faced by Wastewater ...

Jul. 2, 2016

By LG Sonic

ACTIFLO® Clarifiers to Treat Sanitary Sewer Overflow in Lawrence, KS WWTP

The ACTIFLO Process was evaluated as an alternative for sanitary sewer overflow (SSO) treatment at the City of Lawrence, Kansas's wastewater treatment plant (WWTP). Prior to implementation of the ACTIFLO Process and expansion of the existing biological treatment trains, the facility struggled with handling wet weather events that exceeded the 9 MGD (average) or 18 mgd (peak) flow ...

Jul. 1, 2007

By Veolia Water Technologies North America

CHIP-tuning for biological wastewater treatment plants

The demand for efficiency improvement in municipal and industrial wastewater treatment plants (WWTP’s) is increasingly based on problems related to the water quality, process stability and/or insufficient performance in the COD removal and/or nitrification process. New, stricter requirements or the need for higher removal efficiency intensify the demand for optimizing the existing ...

Aug. 5, 2016

By MUTAG (Multi Umwelttechnologie AG)

A performance indicators system for urban wastewater treatment plants

A performance assessment system (PAS) is an important instrument to provide a cost-effective and sustainable management of wastewater treatment plants (WWTPs). Despite the fact that many PASs have been developed in recent years, important aspects of WWTP evaluation have not yet been considered. This paper presents the framework and the overall performance indicators of a PAS developed for urban ...

Nov. 1, 2010

By IWA Publishing

Elimination of organic micropolluants in wastewater treatment plants

In recent years, organic micropollutants such as pharmaceutical residues, hormones and other endocrine disrupters, biocides, or other additives have been detected in various surface and groundwaters around the world. They often enter surface waters via domestic wastewater and wastewater treatment plant (WWTP) effluents have been identified as one of the main sources of these substances. ...

Feb. 8, 2012

By IWA Publishing

Compliance to environmental standards to abate further violation: DEWATS of Selected Slaughterhouses and Public Markets; and a University

In this aggregate case study is the implementation of 6 project initiatives that made use of the Decentralized Wastewater Treatment System that is being promoted by the Basic Needs Philippines, Inc. (BNS). Most owners of the wastewater treatment plant (WWTP) facilities decided to engage in putting such infrastructure to improve its performance, insofar as its ...

Nov. 23, 2011

By IWA Publishing

Understanding energy saving and CO2 reduction in wastewater treatment plants

Wastewater Treatment Plants (WWTPs) have to deal with the issue of energy saving and/or CO2 reduction. Aeration, sludge return, chemical dosing, sludge reduction, sludge digestion, etc. could indeed have some function on this issue. On the other hand, controlled processes of COD and nutrient conversions could also be of benefit to the issue. With this paper, the relationship between energy ...

Mar. 17, 2011

By Inderscience Publishers

Improving vacuum-UV (VUV) photolysis of organic compounds in water with a phosphor converted xenon excimer lamp emitting at 193 nm

A novel vacuum ultraviolet excimer lamp emitting light at 193 nm was used to investigate the degradation of organic micropollutants in ultrapure water and wastewater treatment plant (WWTP) effluent. Overall, light at 193 nm proved to be efficient to degrade the investigated micropollutants (diclofenac, diatrizoic acid, sulfamethoxazole). Experiments with WWTP effluent proved the ability of ...

Jun. 7, 2016

By IWA Publishing

Disinfection Along the Muddy MO…What Evil Lurks in these Waters?

The Missouri Department of Natural Resources (MDNR) recently promulgated fecal coliform effluent limitations requiring disinfection of the effluent discharged to the Missouri River from municipal wastewater treatment plants (WWTPs). Three plants affected by these new regulations are the Birmingham, the Blue River, and the Westside WWTPs owned and operated by the City of Kansas City, Missouri ...

Oct. 21, 2006

By Water Environment Federation (WEF)

Algae control in wastewater treatment plant

Description One of the main challenges faced by Wastewater Treatment Plants (WWTPs) is the control of algae blooms. High algae concentrations create problems for process performance and increase operating expenditure for cleaning and maintenance activities. Results The LUS has shown to be a viable solution at controlling algae growth in the balance tanks at ATP. The results include: ...

Nov. 25, 2014

By LG Sonic

What Is My UV System Telling Me? A Comprehensive Evaluation and Lessons Learned on Startup, Training, and Performance of UV Systems in the Carolinas

Ultraviolet (UV) disinfection is vastly being selected as the preferred disinfection method at many wastewater treatment plants (WWTPs) due to overall present worth costs as well as numerous non-cost benefits including the elimination of toxicity issues related to chlorination and dechlorination by-products and the higher level of safety that UV disinfection provides to plant employees and the ...

Oct. 21, 2006

By Water Environment Federation (WEF)

Diamond Project

DIAMOND is a 24-month ‘Research for SMEs’ European Union's (FP7/2007_2013) project that began in September 2012 and finished in August 2014. The project aims to achieve a model of excellence in the management of wastewater treatment systems by addressing the design, development, implementation and validation of new advanced data management, monitoring and control algorithms and tools ...

Feb. 9, 2015

By IWA Publishing

Long-term effects of engineered nanoparticles on enzyme activity and functional bacteria in wastewater treatment plants

The pervasive use of engineered nanoparticles (NPs) in a wide range of fields raises concerns about their potential environmental impacts. Previous studies confirmed that some NPs had already entered wastewater treatment plants (WWTPs). Wastewater nutrient removal depends on the metabolisms of activated sludge bacteria and their related key enzymes. Therefore, this study compared the possible ...

Jun. 29, 2015

By IWA Publishing

Investigation of Corfu-Greece reclaimed municipal wastewater suitability for irrigation

Care in the reuse of processed liquid wastes from wastewater treatment plants (WWTP) plays a major part in the protection of ecosystems which are used as final receptors of urban wastewater, and provides an environmental answer to the creation of green areas around the WWTP. Research of all the necessary parameters for the safe use of processed wastewaters in soil irrigation gives answers to the ...

Oct. 14, 2004

By Inderscience Publishers

Opportunities for microbial electrochemistry in municipal wastewater treatment – an overview

Microbial bioelectrochemical systems (BESs) utilize living microorganisms to drive oxidation and reduction reactions at solid electrodes. BESs could potentially be used at municipal wastewater treatment plants (WWTPs) to recover the energy content of organic matter, to produce chemicals useful at the site, or to monitor and control biological treatment processes. In this paper, we review ...

Apr. 10, 2014

By IWA Publishing

Linking sanitation and wastewater treatment (WST)

In both developed and developing countries, centralised and on-site wastewater treatment systems have been developed for a long time. The main function of the wastewater treatment plants (WWTPs) should be removal of pollutants including organic carbon, nitrogen and phosphorus. Technologies applied to WWTPs are mostly with biological functions such as activated sludge, stabilization reservoir, ...

Jul. 25, 2014

By IWA Publishing

EU Project Neptune

The scope of sewage treatment is changing: Up to date municipal wastewater treatment plants (WWTP) were seen as an end-of-pipe treatment just before discharge, having the aim to avoid eutrophication and hygienic health hazard in surface water. Due to the global demographic trends as well as new legislations (e.g. the Water Framework Directive, WFD) increased focus is put on quantity and quality ...

Oct. 19, 2011

By IWA Publishing