Newsletter on Greywater Research: September-2018

Greywater reuse technology successfully implemented in households, saving up to 50% of the liquid

Opening a regulator for a moment to clean our hand’s wastes regarding seven liters of water down the drain. Researchers have currently developed a system referred to as good Recollection that reuses greywater and saves up to fifty p.c of the liquid. [1]

Electrochemical treatment for greywater reuse: effects of cell configuration on COD reduction and disinfection byproduct formation and removal

Electrochemical (EC) treatment presents a low-energy, water-reuse strategy with potential application to suburbanized greywater treatment. This study targeted on evaluating the impacts of cell configuration, current density, and cathode material on chemical chemical element demand (COD) removal and medical aid byproduct (DBP) formation in greywater. The formation and/or cathodic  removal of active halogen, salt, haloacetic acids, and trihalomethanes were assessed throughout European Economic Community treatment. DBP formation was proportional to current density in undivided European Economic Community cells. successive anodic-cathodic treatment in divided European Economic Community cells resulted in COD removal within the catholyte and anolyte. [2]

Greywater Implementation in Montgomery County

The Montgomery County Parks Department has to adopt another water supply to secure the longer term of their facility at their capital of Syria and Cabin John facilities. A greywater system may be a viable choice. Greywater may be a property, innovative water supply collected from sinks and ice shavings for apply choices, protective water, and reducing energy. Construction and style of those facilities would require new and retrofit ways. As greywater contributes to a major share of effluent publically areas, as well as parks and ice rinks, a correct treatment system is needed to get rid of microorganism and organic compounds. One such system is that the Aqua2use Greywater Treatment System, that may be a storage and sanitation system that’s applicable for non-potable water apply and is economically useful. [3]

Simulation study on the comparison of an algal treatment to conventional biological processes for greywater treatment

The employ of greywater could be a promising strategy to preserve water resources for future generations. the most objective of the current study is to simulate 3 completely different biological treatment technologies (high rate protoctist lake (HRP), typical activated sludge (AS) treatment and rotating biological contactors (RBC)) at varied waste matter loadings (low, medium and high-strength contaminated greywater) and, then, compare the treatment potency of HRP treatment with each RBCs and AS method. All of the adopted technologies were found to supply effluents with satisfactory quality. corpuscle achieved higher removal of nitrate and phosphorus compared to the traditional AS treatment method, whereas sensitivity analyses reveal that the AS method reached the steady state condition quicker than the corpuscle method. [4]

Greywater Reuse Review and Framework for Assessing Greywater Treatment Technologies for Toilet Flushing

Increasing impacts of global climate change, development and urbanization on water resource availableness have promoted multiplied water apply and utilization. This paper achieves 2 objectives: foremost, it presents an intensive review of greywater characteristics, treatment technologies, and risks, and second, it presents the event of a framework for holistically assessing totally different greywater treatment technologies so as to pick the foremost acceptable for a particular greywater apply (GWR) application. Addressing these objectives is especially valuable for South Africa thanks to the growing interest in greywater apply (especially for irrigation, bathroom flushing and a range of non-domestic applications), the scarceness of guideline documents to facilitate optimum GWR, and therefore the proliferation of package plants purporting to treat grey/wastewater to acceptable quality to be used in sure non-potable applications. [5]

Reference

[1] Greywater reuse technology successfully implemented in households, saving up to 50% of the liquid

Date: April 25, 2015, Source: Investigación y Desarrollo (web link)

[2] Electrochemical treatment for greywater reuse: effects of cell configuration on COD reduction and disinfection byproduct formation and removal

Drennan DM, Koshy RE, Gent DB, Schaefer CE. Electrochemical treatment for greywater reuse: effects of cell configuration on COD reduction and disinfection byproduct formation and removal. Water Science and Technology: Water Supply. (web link)

[3] Greywater Implementation in Montgomery County

Chit P, Dassen J, Lewis M, Rothman J, Wilson L, Winik J. Greywater Implementation in Montgomery County. Partnership for Action Learning in Sustainability (PALS); 2017. (web link)

[4] Simulation study on the comparison of an algal treatment to conventional biological processes for greywater treatment

Vuppaladadiyam AK, Merayo N, Blanco A, Hou J, Dionysiou DD, Zhao M. Simulation study on comparison of algal treatment to conventional biological processes for greywater treatment. Algal Research. 2018 Nov 1;35:106-14. (web link)

[5] Greywater Reuse Review and Framework for Assessing Greywater Treatment Technologies for Toilet Flushing

  1. O. Olanrewaju1,2* and A. A. Ilemobade2

1Department of Agricultural and Environmental Engineering, Federal University of Technology, Akure, Nigeria.

2School of Civil and Environmental Engineering, University of the Witwatersrand, Johannesburg, South Africa. (web link)

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