Domestic Wastewater Articles

Wastewater treatment facilities are continually challenged to meet both environmental regulations and reduce running costs (particularly energy and staffing costs). Improving the efficiency of operational monitoring at wastewater treatment plants (WWTPs) requires the development and implementation of appropriate performance metrics; particularly those that are easily measured, strongly ...

Jan. 19, 2018

By IWA Publishing

Big Park Domestic Wastewater Improvement District in Arizona had constructed a new 500,000 gallons per day biological wastewater treatment system in 1997. As time passed, the aging plant was unable to keep up with increasing demands. Challenges In 2012, the District started working with Sunrise Engineering to find a solution that would work in their existing plant. Sunrise ...

Nov. 27, 2017

By Aeration Industries International (AII)

Up-flow anaerobic sludge blanket (UASB) has been in use since last few decades for the treatment of organic wastewaters. However, the performance of UASB reactor is quite low for treatment of low strength wastewaters (LSWs) due to less biogas production leading to poor mixing. In the present research work, a modification was done in the design of UASB to improve mixing of reactor liquid which ...

Nov. 21, 2017

By IWA Publishing

The biogas project for domestic sewage treatment (BPDST) is considered a promising facility for wastewater management in rural areas of China. This paper explores previous experimental works, cost analysis, and BPDST structure and design based on Chinese literature. Opportunities for developing decentralized or neighborhood-based BPDSTs include fulfilling Millennium Development Goals (MDGs) ...

Oct. 20, 2017

By IWA Publishing

1,4-Dioxane (dioxane), a probable human carcinogen, often exists in industrial wastewater and domestic sewage. In this study, we applied 16S rRNA and metatranscriptomic methods to analyze the dioxane biodegradation mechanism by activated sludge. Tetrahydrofuran (THF) was added as an essential co-metabolite to promote the degradation of dioxane. We found the dioxane removal ratio increased with ...

Oct. 16, 2017

By IWA Publishing

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 ...

Sep. 30, 2017

By Fluence Corporation

Addition of an external carbon source is usually necessary to guarantee a sufficiently high C/N ratio and enable denitrification in wastewater treatment plants (WWTPs). Alternatively, denitrification processes using autotrophic microorganisms have been proposed i.e., with the use of H2 as electron donor or with the use of cathodic denitrification in bioelectrochemical systems (BES), in which ...

Sep. 5, 2017

By IWA Publishing

Water related issues are getting challenging day by day. Threats of water pollution and scarcity have become quite threatening. On the other hand, global usage of water has significantly increased. On this context, ideas like domestic water reuse have become essential. Key technologies and processes: Good news is that technologies for domestic water reuse have advanced in a ...

Aug. 11, 2017

By Genesis Water Technologies, Inc.

In order to reduce the energy consumption and membrane fouling of the conventional membrane bioreactor (MBR), a kind of low energy consumption vortex wave flow MBR was exploited based on the combination of biofilm process and membrane filtration process, as well as the vortex wave flow technique. The experimental results showed that the vortex wave flow state in the membrane module could be ...

Jul. 14, 2017

By IWA Publishing

In this study, the chromium removal capability and photosynthetic capacity response of plants were investigated in vertical flow wetland microcosms (VFWM) treated with Cr(VI) bearing domestic sewage. Two plants, Cyperus alternifolius (C. alternifolius) and Coix lacryma-jobi L. (C. lacryma-jobi L.) grown in the VFWM enhanced the purification ...

Jul. 3, 2017

By IWA Publishing

Designing an off-mains drainage solution for a commercial facility such as a leisure centre, factory, or an office, should never be considered a simple job. It requires qualified and expert guidance to ensure compliance with the stringent legal requirements which must be observed. Kingspan Klargester has been providing customers with support, at all stages of project planning, designing, ...

Jun. 12, 2017

By Kingspan Environmental Ltd

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 removal of total nitrogen in wastewater treatment plants (WWTPs) is often unsatisfactory for a variety of reasons. One possible measure to improve nitrogen removal is the addition of external carbon. However, the amount of carbon addition is directly related to WWTP operation costs, highlighting the importance of accurately determining the amount of external carbon required. The objective ...

Mar. 23, 2017

By IWA Publishing

Nearly 25 percent of the population in the United States—in more than 25 million homes—disposes of wastewater through onsite, or unsewered, systems that return treated effluent to the ground. This is an important public health issue because many of those same homes use wells that rely on groundwater for the drinking water supply. With ...

Mar. 23, 2017

By National Ground Water Association (NGWA)

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 ...

Feb. 27, 2017

By IWA Publishing

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

Wastewater Treatment Failures The European Commission’s Urban Wastewater Treatment Directive of 1991 says that cities in areas with particularly sensitive waters, including those with waterways feeding into the Danube River, shown, are required to use more stringent treatment. The European Court of Justice is starting to assess fines against European Commission member ...

Feb. 1, 2017

By Fluence Corporation

A newly upgraded water and wastewater treatment facility in Denmark is reportedly the first energy-neutral facility of its kind in the world. Through 3.19 million euros in upgrades, the Marselisborg Wastewater Treatment Plant has been able to optimize a range of processes to become more energy efficient, said Aarhus Water, which operates the facility for the 200,000 residents of Aarhus. It ...

Jan. 11, 2017

By Fluence Corporation

In many Countries, small communities are required to treat wastewater discharges to increasing standards of lesser environmental impacts, but must achieve that goal at locally sustainable costs. While biological membrane treatment (membrane bio-reactors (MBRs)) is quickly becoming the industry standard for centralized wastewater treatment plants, and would also be ideally suited also for small ...

Jan. 1, 2017

By IWA Publishing

This paper is about the set-up and start-up of a decentralized anaerobic pilot plant for producing domestic service water from domestic wastewater. The plant consists of a two-stage anaerobic digestion process for degrading organic matter and a third-stage for ammonium removal using the Anammox process. Each reactor was started independently with synthetic wastewater of stage-specific ...

Jan. 1, 2017

By IWA Publishing