wastewater treatment plants wwtp Articles
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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 ...
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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 ...
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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 ...
By LG Sonic
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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 ...
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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 ...
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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 ...
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Odor control in WWTPs
Controlling odor emissions at wastewater treatment plants (WWTPs) is a priority objective for management entities, in order to ensure the well-being of workers and minimize the impact these facilities have on the environment. Bioconservacion has the solution to treat the emission of odor-causing gases, ensuring compliance with environmental regulations and improving the quality of life of ...
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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 ...
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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. ...
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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 ...
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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: ...
By LG Sonic
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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 ...
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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 ...
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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, ...
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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 ...
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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 ...
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Extension of two large wastewater treatment plants in Stockholm using membrane technology
Like many other large cities, Stockholm is facing increased urbanization with densification of infrastructure as a result. At the same time, implementation of the Baltic Sea Action Plan and the EU Water Framework Directive is expected to result in more stringent effluent quality demands. The current situation gives rise to new challenges for the municipal wastewater treatment plants (WWTPs). ...
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Uncertainties of spectral in-situ measurements in wastewater using different calibration approaches
Abstract: Three calibration methods were applied to UV/VIS spectra recorded in the influent of six wastewater treatment plants (WWTPs) to measure total COD (CODtot), filtered COD (CODfil), nitrate and nitrite nitrogen (NOx-N) and total suspended solids (TSS). It could be shown that a calibration of the sensor using data sets from four Swiss WWTPs leads to an improvement of the precision in ...
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Nutrient Control Design Manual
The purpose of this EPA design manual is to provide updated, state‐of‐the‐technology design guidance on nitrogen and phosphorus control at municipal Wastewater Treatment Plants (WWTPs). Similar to previous EPA manuals, this manual contains extensive information on the principles of biological nutrient removal and chemical phosphorus removal to serve as the basis for design. A ...
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A black-box model for generation of site-specific WWTP influent quality data based on plant routine data
This paper presents a simple method for the generation of continuous influent quality datasets for wastewater treatment plants (WWTPs) that is based on incomplete available routine data, only, without referring to any further measurement. In the approach, Weibull-distributed random data are fitted to the available routine data, such that the resulting distribution of influent quality data ...
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