municipal wastewater Articles

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PPCPs: Preparing for an uncertain regulatory future

by Thermo Fisher Scientific, LIMS & Laboratory Software  (Mar. 25, 2015)

A recent study published in Environmental Pollution* identified 56 active pharmaceutical ingredients (APIs) in effluent samples from 50 large wastewater treatment plants across the U.S. Among the products found in samples were commonly prescribed anti-psychotic and antihypertensive drugs. As more studies continue to fuel public concerns over risks ...

Can incentives protect Canada’s clean water?

by GLOBE Foundation  (Mar. 26, 2015)

Clean water is a vital, valuable resource for Canada. We drink it. We grow food with it. We generate power using it. We use it as an input to industry, from manufacturing to oil and gas production. We swim, splash, and paddle our canoes in it. And clean water isn’t valuable just to humans; it also underpins essential ecosystems all over the ...

Are our Water Systems at Risk?

by British Columbia Water & Waste Association (BCWWA)  (Feb. 1, 2015)

Assessing the Financial Sustainability of BC’s Municipal Water and Sewer Systems Reliable water, sewer, and storm water systems are essential to public health, a clean environment, and a strong economy. But British Columbia’s systems may be at risk – aging infrastructure, growth, strengthened regulations, seismic risk, and ...

Chitosan use in chemical conditioning for dewatering municipal-activated sludge

by IWA Publishing  (Mar. 27, 2015)

This work aims to evaluate the potential use of chitosan as an eco-friendly flocculant in chemical conditioning of municipal-activated sludge. Chitosan effectiveness was compared with synthetic cationic polyelectrolyte Sedipur CF802 (Sed CF802) and ferric chloride (FeCl3). In this context, raw sludge samples from Beni-Messous wastewater ...

Bioaugmentation/waste water treatment in municipal WWTP - Case Study

by Atlas Seis - Sistemas de Energia para a Industria e Serviços, Lda.  (Mar. 4, 2015)

What is it? The bioaugmentation is an innovative technology which consists in an increase of selected bacteria to help naturally the biological process of organic compounds degradation. It is proper to dose in any effluent type and wastewater treatment system, which no longer has enough capacity or has an inefficient performance. These products ...

Population dynamics of filamentous bacteria identified in Polish full-scale wastewater treatment plants with nutrients removal

by IWA Publishing  (Mar. 16, 2015)

A comprehensive study of the identity and population dynamics of filamentous bacteria in five Polish full-scale municipal wastewater treatment plants (WWTPs) with nutrients removal had been carried out for 2 years. A quantitative culture-independent, molecular method – fluorescence in situ hybridization – was applied to evaluate ...

Photoreactivation and subsequent solar disinfection of Escherichia coli in UV-disinfected municipal wastewater under natural conditions

by IWA Publishing  (Jan. 30, 2015)

Photoreactivation of ultraviolet (UV)-disinfected wastewater of different qualities was experimentally assessed. Photoreactivation ability of secondary effluent and microstrained inflow was analyzed in different samples of 50 mL (Petri dish) and 7,000 mL volume to describe open channel effluent situations of wastewater treatment plants in a more ...

Growth and accumulation of heavy metals in turnip (Brassica rapa) irrigated with different concentrations of treated municipal wastewater

by IWA Publishing  (Jan. 29, 2015)

The present study has been carried out by irrigating turnip plants with different concentrations of treated municipal wastewater in order to see the effect on heavy metals accumulation and growth of plants. The turnip plants were watered with normal water and the results compared with results obtained by using treated municipal wastewater. The ...

Dissolved air flotation separation for pretreatment of membrane bioreactor in domestic wastewater treatment

by IWA Publishing  (Feb. 23, 2015)

Due to requiring higher water quality standards over time, new technologies are being employed for wastewater treatment. Dissolved air flotation (DAF) and membrane bioreactor (MBR) technologies are widely employed as new technologies in wastewater treatment. DAF is used due to its excellent separation capability of suspended solids as well as ...

Stability of alumina, ceria, and silica nanoparticles in municipal wastewater

by IWA Publishing  (Nov. 18, 2014)

Inorganic oxide nanoparticles (NPs) are used in semiconductor manufacturing operations such as wafer chemical–mechanical planarization (CMP). Understanding the stability of NPs in municipal wastewater is essential for the evaluation of the fate of NPs released to municipal wastewater treatment plants (WWTPs). This study aimed to evaluate ...

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