domestic wastewater Articles - page 5

Performance evaluation of subsurface wastewater infiltration system in treating domestic sewage

This study was to investigate domestic treatment efficiency of a subsurface wastewater infiltration (SWI) system over time. The performances of a young SWI system (in Shenyang University, China, fully operated for one year) and a mature SWI system (in Shenyang Normal University, China, fully operated for seven years) under the same operation mode were contrasted through field-scale experiments ...

Jan. 1, 2012

By IWA Publishing

Decentralized peri-urban wastewater treatment technologies assessment integrating sustainability indicators

Selection of treatment technologies without considering the environmental, economic and social factors associated with each geographical context risks the occurrence of negative impacts that were not properly foreseen, working against the sustainable performance of the technology. The principal aim of this study was to evaluate 12 technologies for decentralized treatment of domestic wastewater ...

Jul. 16, 2015

By IWA Publishing

Altinoluk Municipality – Case Study

Project name Altinoluk Wastewater Treatment Plant Employer Altinoluk Municipality Contractor Enta Muhendislik Aritma Taah. San. Ve Tic. Ltd. Sti. Location of the plant Bahkesir / TURKEY Scope of work Domestic Wastewater Treatment Plant Contract Date 2002 Completion Date 2003 Flowrate of the plant: 12.000 m3/day Inlet Pollution Parameters: COD: 400-500 mg/ L SS: 150-200 mg/ L BOD: 5250-300 ...

Nov. 3, 2018

By ENTA Treatment Systems Engineering Contracting Corporation

Ozakteks Textile - Case Study

Project Name Ozakteks Tekstil A.§. Wastewater Treatment Plant Employer Ozakteks Tekstil A.§. Contractor Enta Muhendislik Aritma Taah. San. Ve Tic. Ltd. Sti. Location of the plant ISTANBUL/TURKEY Scope of work Industrial and Domestic Wastewater Treatment Contract Date 2006 Completion Date 2006 Flowrate of the plant: 2.000 m3/day Inlet Pollution Parameters: COD: 1200-1400 mg/L ...

Nov. 5, 2018

By ENTA Treatment Systems Engineering Contracting Corporation

Long-term survival of Escherichia coli in lightweight aggregate filter media of constructed wastewater treatment wetlands

A laboratory scale experiment on the survival of Escherichia coli in samples of filter media from a horizontal subsurface flow constructed wetland treating domestic wastewater was performed. A concentration of E. coli was examined in samples collected from a wetland filter filled with lightweight aggregates (LWA). All samples testing positive for E. coli contamination were used to examine the ...

Jan. 1, 2011

By IWA Publishing

Packaged Wastewater Treatment for Guantanamo Bay - Case Study

PROJECT DETAILS LOCATION Naval Station Guantanamo Bay, Cuba CUSTOMER United States Navy SOLUTION Advance Extended Aeration Wastewater Treatment Plant TECHNOLOGIES 300,000 GPD Packaged Plant Featuring Gravity Sand Tertiary Filter System Extended aeration plant designed to treat municipal waste for discharge and for reuse as grey water Background In 2001, with the growing population at ...

Sep. 30, 2017

By Fluence Corporation

Stagewise processing of yellow water using clinoptilolite for nitrogen and phosphorus recovery and higher residual quality

Source-separated human urine may be used as a source of fertilizers indirectly through processing with clinoptilolite. The suggested form of fertilizer is clinoptilolite loaded with plant nutrients from urine, where nitrogen and phosphorus will be released upon contact with water. Triggered by the need for handling high concentrations remaining in the liquid phase to be disposed of, this paper ...

Jun. 12, 2015

By IWA Publishing

Recovery of methane from anaerobic process effluent using poly-di-methyl-siloxane membrane contactors

This paper demonstrates the potential for recovering dissolved methane from low temperature anaerobic processes treating domestic wastewater. In the absence of methane recovery, ca. 45% of the produced methane is released as a fugitive emission which results in a net carbon footprint of −0.47 kg CO2e m−3. A poly-di-methyl-siloxane (PDMS) membrane contactor was applied to support sweep gas ...

Jan. 1, 2012

By IWA Publishing

Evaluation of Ageratum conyzoides in field scale constructed wetlands (CWs) for domestic wastewater treatment

Ageratum conyzoides were evaluated in field scale subsurface flow constructed wetlands (CWs) to quantify its nitrogen (N) and phosphorus (P) uptake and compare with wetland plants (Pistia stratiotes, Typha latifolia and Canna indica). The two-field scale subsurface flow CWs, located in the International Crops Research Institute for Semi-Arid Tropics, received wastewater from an urban ...

Feb. 27, 2017

By IWA Publishing

Constructed Wetlands for Domestic Wastewater Treatment and its Reuse in Irrigation

Introduction This project focuses on South Europe, the region important for tourism and agricultural production, both activities with high water demand. Mentioned region is already experiencing problems with water scarcity and the situation is expected to worsen according to the international prognosis (Angelakis et al, 1999). Climate change could cause problems with water supply and water ...

Nov. 8, 2015

By IWA Publishing

World‐wide estimation of river concentrations of any chemical originating from sewage treatment plants using dilution factors

Dilution factors (DFs) are a critical component in estimating concentrations of “down‐the‐drain” chemicals (e.g. pharmaceuticals) in rivers. The present study estimated the temporal and spatial variability of DFs around the world using geographically referenced datasets at 0.5° × 0.5° resolution. The domestic wastewater effluents were derived from national per capita domestic water use ...

Oct. 30, 2013

By John Wiley & Sons, Ltd.

Impacts of onsite greywater reuse on wastewater systems

Together with significant water savings that onsite greywater reuse (GWR) may provide, it may also affect the performance of urban sewer systems and wastewater treatment plants (WWTPs). In order to examine these effects, an integrated stochastic simulation system for GWR in urban areas was developed. The model includes stochastic generators of domestic wastewater streams and gross solids ...

Feb. 6, 2017

By IWA Publishing

Rural Wastewater Treatment with SUBRE Greenfield, China

• Location: Outang Village, Qujiang District of the Zhejiang Province in China • Capacity: 40 m3/day (10,500 GPD) • Technology: SUBRE MABR-based greenfield solution for wastewater treatment • Customer: Tiandi Environmental Protection Technology Co. Ltd Background Outang Village in Qujiang District, Zhejiang Province, is a rural residential area next to Gao Jia town and ...

Jul. 3, 2019

By Fluence Corporation

Application of biofilm reactors to improve ammonia oxidation in low nitrogen loaded wastewater

An airlift reactor using zeolite particles as carrier material was used for the nitrification of effluents from the aquaculture industry. During the start-up the nitrogen concentration was kept around 100 mg NH4+-N/L to develop the nitrifying population. Later it was decreased down to around 3 mg NH4+-N/L and the dilution rate was increased up to 4.8 d-1 in order to simulate the conditions in a ...

Jan. 1, 2011

By IWA Publishing

Biological reduction and removal of Cr(VI) with microbial consortia collected from local water treatment plant

Application of microbes in water treatment is a well-established technique. A few microbes are tolerant to toxic heavy metals. Cr(VI) tolerant microbes have practical importance of detoxifying Cr(VI) to Cr(III). The water treatment plant situated at Indian Institute of Technology Guwahati (IITG), India, employs both physical and biological processes to treat domestic wastewater. The microbial ...

Dec. 24, 2014

By Inderscience Publishers

Urban wastewater reuse: a pilot plant experience

The results of a preliminary verification of domestic wastewater reusability in L'Aquila (Italy) are reported. A Tertiary Treatment Pilot Plant (TTPP), rotary filtration and Ultraviolet (UV) Radiation disinfection, was added to an Urban WasteWater Treatment Plant (UWWTP) to test the compliance with water quality indicated for reuse by the enforced Italian regulation. The TTPP was managed varying ...

Apr. 16, 2007

By Inderscience Publishers

What Is Industrial Wastewater Treatment?

Industrial progress has helped economic and social growth to a large extent, whereas, it has also created the major problem of environmental pollution at the same time as well. Industrial pollution is one of the major concerns of industries and environment protection agencies worldwide. The technical advantages have assisted the industries to reduce water pollution to a certain level. The ...

Aug. 25, 2017

By Genesis Water Technologies, Inc.

$Contribution of different effluent organic matter fractions to membrane fouling in ultrafiltration of treated domestic wastewater$

Contribution of different effluent organic matter fractions to membrane fouling in ultrafiltration of treated domestic wastewater

In the present work, effluent organic matter (EfOM) in treated domestic wastewater was separated into hydrophobic neutrals, colloids, hydrophobic acids, transphilic acids and neutrals and hydrophilic compounds. Their contribution to dissolved organic carbon (DOC) was identified. Further characterization was conducted with respect to molecular size and hydrophobicity. Each isolated fraction was ...

Oct. 30, 2012

By IWA Publishing

Quantification and characterization of greywater from schools

Survey of schools of different education levels (primary, intermediate and secondary) in Kuwait showed an average greywater generation rate of 7.3 L/p/d and varied in the range of 2.9 – 16 L/p/d, reflecting the school level of education (i.e. student age). The highest rates were observed for primary schools while the lowest rates were observed in secondary schools where students are more ...

Nov. 25, 2015

By IWA Publishing

The adaptation of nitrifying microorganisms to inhibiting substances at meso- and psychrophilic temperature conditions

This paper deals with adaption capacity of nitrifiers to allylthiourea (ATU) as a model inhibitor at two temperature levels. Nitrifying communities were developed at 15 (BM15) and 30 °C (BM30). The activity of the nitrifiers was determined by using short-time respiration (STR) tests, oxygen monitoring and in-situ measurements. The oxygen monitoring provided information about the ...

Jul. 4, 2013

By IWA Publishing

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