effluent flow Articles | Environmental XPRT

Effluent

Effluent is an outflowing of water or gas from a natural body of water, or from a human-made structure. Effluent is defined by the United States Environmental Protection Agency as “wastewater - treated or untreated - that flows out of a treatment plant, sewer, or ...

Apr. 6, 2012

By IWA Publishing

Humification of effluent organic matters through a surface-flow constructed wetland

Dominant fractions of wastewater effluent organic matter (EfOM) were changed from polysaccharides (PS) to polyhydroxyaromatics (PHA), throughout the constructed treatment wetland connected to a wastewater treatment plant, as measured using pyrolysis gas chromatography-mass spectrometry (Py-GC/MS). The changes in the fractions were also identified, with respect to molecular weight (MW) ...

Nov. 1, 2013

By IWA Publishing

Enhancement of denitrification in a down-flow hanging sponge reactor by effluent recirculation

A down-flow hanging sponge reactor, constructed by connecting three identical units in series, was applied to the treatment of artificial wastewater containing phenol and ammonia under high salinity conditions (10.9 g-Cl−/L). The theoretical hydraulic retention time (HRT) of each unit was 4 h (total HRT = 12 h). To enhance denitrification by effluent recirculation, the effluent ...

Aug. 8, 2013

By IWA Publishing

Treatment of petrochemical secondary effluent by an up-flow biological aerated filter (BAF)

In this study, petrochemical secondary effluent was treated by a 55 cm diameter pilot-scale biological aerated filter (BAF) with a media depth of 220 cm. Volcanic rock grains were filled as the BAF media. Median removal efficiency of chemical oxygen demand (COD) and ammonia nitrogen (NH3-N) was 29.35 and 57.98%, respectively. Moreover, the removal profile of the COD, NH3-N, total ...

Jan. 28, 2016

By IWA Publishing

BCTMP Mill effluent treatment plant

Location: Slave Lake, Alberta Owner: Slave Lake Pulp Corporation Description: A greenfield 130,000 ADMT BCTMP mill using Aspen as wood furnish. The high strength effluent, with a BOD5 strength of up to 6,000 mg/L (35 t/d) and flow of 6,300 m3/d, is treated by a five day extended aeration activated sludge process. This represented the first ...

Oct. 10, 2012

By NovaTec Consultants Inc.

Evaluating performance of vertical flow constructed wetland under various hydraulic loading rates in effluent polishing

The discharge of untreated wastewater or partially treated effluent and runoff from agricultural fields into water bodies is a major source of surface water pollution worldwide. To mitigate this problem, wastewater treatment using wastewater stabilization ponds and constructed wetlands have been promoted. The performance of such wastewater treatment systems is strongly dependent on their ...

Jun. 1, 2011

By IWA Publishing

Chlorine Disinfection of Blended Wastewater Effluents

KeywordsBlended Wastewater, Disinfection IntroductionFlow to publicly owned treatment works (POTWs) increases during wet weather events, due to intrusion of storm water into sanitary collection systems and use of combined sewer systems. When such flows exceed the hydraulic capacity of a POTW alternate flow management techniques must be employed to ensure that ...

Oct. 13, 2007

By Water Environment Federation (WEF)

Bacterial community involved in the nitrogen cycle in a down-flow sponge-based trickling filter treating UASB effluent

The bacterial community composition of a down-flow sponge-based trickling filter treating upflow anaerobic sludge blanket (UASB) effluent was investigated by pyrosequencing. Bacterial community composition considerably changed along the reactor and over the operational period. The dominant phyla detected were Proteobacteria, Verrucomicrobia, and ...

Jun. 29, 2015

By IWA Publishing

Design-support and performance estimation using HYDRUS/CW2D: a horizontal flow constructed wetland for polishing SBR effluent

The 4,000 PE (700 m3/d) wastewater treatment plant at Balf, Hungary was based on sequencing batch reactor technology with phosphorus precipitation as the tertiary step. Its effluent met quality thresholds on average, with above-threshold peaks mainly in winter. The HYDRUS/CW2D model package (PC Progress s.r.o.) was used to simulate the treatment performance of a horizontal flow constructed ...

Apr. 13, 2015

By IWA Publishing

Application of up-flow anaerobic sludge blanket reactor integrated with constructed wetland for treatment of banana winery effluent

Agroprocessing constitutes sizeable industries in the Eastern Africa region discharging wastes into the environment. Proper management of industrial waste is perceived as expensive and enforcement of laws is weak. Generally, there is low awareness of environmental and socio-economic consequences of polluting the environment. The Banana Investment Limited (BIL) in Arusha Tanzania which produces ...

Jan. 1, 2017

By IWA Publishing

Comparison of PPCPs removal on a parallel-operated MBR and AS system and evaluation of effluent post-treatment on vertical flow reed beds

The presence in the aquatic environment of xenobiotics such as Pharmaceutical and Personal Care Products (PPCPs) has emerged as an issue of concern. Upgrading sewage treatment quality with modern technologies such as Membrane Bioreactors (MBRs) and/or implementing a further post-treatment might mitigate the release of xenobiotics into surface waters. The performance of two processes treating ...

Jan. 1, 2011

By IWA Publishing

Effluent management flexibility through nutrient removal

ABSTRACT The City of Carson City (City) Wastewater Reclamation Plant (WRP) is facing several effluent management challenges, which include increased effluent nitrogen concentrations, seepage from its reclaimed water storage reservoir, and increased influent flow due to growth. The City desires an economical solution that will allow it to continue its 100 percent reuse program as well as ...

Oct. 13, 2007

By Water Environment Federation (WEF)

Avondale Foods effluent treatment - Case Study

Introduction Avondale Foods (Craigavon) Ltd. is one of the UK's leading manufacturers and suppliers of coleslaw, wet salads, side salads, vegetable accompaniments, soups, sauces and mayonnaise to retail and foodservice customers throughout Britain and Ireland. The company has a team of over 380 people working in its state-of-the-art facility, with all products being manufactured on the ...

Jun. 6, 2017

By Water Tecnik Ltd.

Study of constructed wetlands effluent disinfected with ozone

The purpose of this research was to study the disinfection of sanitary effluent from constructed wetlands, evaluating the oxidation of organic matter, the formation of formaldehyde, as well as the efficiency of total coliforms and Escherichia coli inactivation. A constant flow of ozone was applied to the batch system in 5 and 10 mg.O3 L−1 doses with contact times ...

Jul. 16, 2014

By IWA Publishing

Comparison between polishing (maturation) ponds and subsurface flow constructed wetlands (planted and unplanted) for the post-treatment of the effluent from UASB reactors

This paper presents the results of a comparison of the performance of two treatment systems operating in parallel, with the same influent wastewater. The investigated systems are (i) UASB + three polishing ponds in series + coarse filter (200 population equivalents) and (ii) UASB + subsurface flow constructed wetlands (50 population equivalents). Two wetland units, operating in parallel, were ...

Mar. 1, 2010

By IWA Publishing

Rapid quantification of bacteria and viruses in influent, settled water, activated sludge and effluent from a wastewater treatment plant using flow cytometry

As microbiological parameters are important in monitoring the correct operation of wastewater treatment plants and controlling the microbiological quality of wastewater, the abundances of total bacteria (including intact and damaged bacterial cells) and total viruses in wastewater were investigated using a combination of ultrasonication and flow cytometry. The comparisons between flow cytometry ...

Nov. 1, 2013

By IWA Publishing

Performance and behaviour of planted and unplanted units of a horizontal subsurface flow constructed wetland system treating municipal effluent from a UASB reactor

A system composed of two horizontal subsurface flow constructed wetlands operating in parallel was evaluated for the post-treatment of UASB (upflow anaerobic sludge blanket) reactor effluent, for a population equivalent of 50 inhabitants per unit. One unit was planted with cattail (Typha latifolia) and the other was unplanted. The study was undertaken over a period of 4 years, comprising ...

Oct. 18, 2013

By IWA Publishing

Canadian mill achieves zero effluent discharge

The zero effluent goal required the highest quality aerators Problem When designing its new mill and wastewater treatment system in 1992, this Canadian Company had planned to discharge into a nearby creek. But, sensitive to the region’s pristine environment, they decided to design the most advanced effluent treatment system conceivable: a chlorine-free, closed loop, zero effluent ...

Dec. 22, 2008

By Aeration Industries International (AII)

Post-treatment of UASB reactor effluent in waste stabilization ponds and in horizontal flow constructed wetlands: a comparative study in pilot scale in Southeast Brazil

The results of a 20-month period study in Brazil were analyzed to compare horizontal-flow constructed wetlands (CW) and waste stabilization pond (WSP) systems in terms of land area requirements and performance to produce effluent qualities for surface water discharge, and for wastewater use in agriculture and/or aquaculture. Nitrogen, E. coli and helminth eggs were more effectively removed in WSP ...

Feb. 1, 2010

By IWA Publishing

Wastewater engineers go with the flow

The efficiency of maintenance work has been improved by water treatment engineers employing Intellisonde monitors in their final effluent. Designed primarily to measure water quality, the Intellisondes also measure flow, and this reading is being used to detect the accumulation of debris that necessitates a maintenance visit. Wastewater treatment efficiency is often measured by the analysis of ...

Aug. 13, 2013

By Intellitect Water Ltd

Subscribe to our eBulletins

Add Supplier Profile