activated sludge

  • The coagulants tested were metallic and organic and their efficiency was compared when treating samples of raw and treated sewage (activated sludge). (environmental-expert.com)

existing sewage treatment

  • The process itself is based on an upgrade of existing sewage treatment processes called the " contact-stabilization process . (yahoo.com)

odor control

  • Waste Water Treatment Install MiamiA municipality adds pollution control with the help of Alliance Corporation as part of odor control of new sewage treatment plant.Application: Waste Water Treatment - Corona, CAProject: A 4,000 SCFM TRITON™ Regenerative Thermal Oxidizer constructed of 316 stainless steel. (environmental-expert.com)

effluents

  • The researchers isolated an anti-E. faecalis phage from sewage effluents retrieved from a Jerusalem sewage treatment facility. (sci-tech-today.com)
  • However, persistent compounds released with the treated sewage effluents enter the environment and pose a risk to animal and human life. (scielo.org.za)
  • The aim of this study was to validate and use screening tests to determine the toxicity of raw wastewater and treated sewage effluents from 3 sewage treatment plants in the Western Cape, South Africa. (scielo.org.za)
  • Raw wastewater and treated sewage effluents were screened for cytotoxicity using lactate dehydrogenase (LDH) release from cells as biomarker, for neurotoxicity using acetylcholinesterase (AChE) inhibition and for genotoxicity using the Save Our Soul (SOS) test. (scielo.org.za)
  • Results showed no cytotoxicity for both raw wastewater and treated sewage effluents from all sewage treatment plants. (scielo.org.za)
  • Treated sewage effluents from all three sewage treatment plants displayed no genotoxicity indicating effective removal of genotoxins by all three sewage treatment plants investigated. (scielo.org.za)
  • Several studies have used LDH release as a method to determine cytotoxicity of chlorinated drinking water and treated sewage effluents. (scielo.org.za)
  • Sewage treatment plant processes are inefficient at eliminating all contaminants from treated effluents. (scielo.org.za)

anaerobic

  • The anaerobic treatment of sewage sludge has a long history in Germany. (environmental-expert.com)
  • Today, anaerobic sludge digestion is the most widely used process for stabilizing sewage sludges. (environmental-expert.com)
  • This article evaluates the performance of 10 large scale upflow anaerobic sludge blanket (UASB) sewage treatment plants (STP), located in Brazil (7), India (2) and the Middle East (1). (environmental-expert.com)

wastewater

  • Digesters, in which a portion of the sewage sludge is converted into utilizable biogas under the exclusion of air, are to be found at almost all medium-sized and larger wastewater treatment plants (from approx. (environmental-expert.com)
  • GATLINBURG - The cause of the catastrophic collapse of the Gatlinburg wastewater treatment plant basin wall that killed two workers and sent nearly 1 million gallons of raw sewage into the Little Pigeon River remained under investigation Tuesday night. (timesfreepress.com)
  • Raw wastewater from all sewage treatment plants contained AChE inhibitors and sewage treatment processes were not effective at eliminating these AChE inhibitors. (scielo.org.za)
  • Raw wastewater from all sewage treatment plants tested positive for genotoxicity. (scielo.org.za)
  • The mutagenicity of crude extracts and subfractions of two samples of a reference sewage sludge material and two sewage sludges from two wastewater treatment plants (WWTP), one urban and the other one urban mixed with industrial, was assessed using an Ames fluctuation assay based on 384-well microtiter plates with liquid cultures. (csic.es)

contaminants

  • The main objective of the work underlying this thesis was to improve understanding of the relationships between the characteristics of sewage contaminants and their sewage treatment efficiency. (diva-portal.org)
  • The quality of the sewage sludge and the levels and distribution patterns of the sludge contaminants, both within and between the STPs, seem to remain quite constant over time. (diva-portal.org)
  • The overall findings indicate that the levels of contaminants in sewage sludge seem to be largely independent of the location, size and treatment techniques applied at the STPs, and generally, of the types of human activity connected to them. (diva-portal.org)

1996

  • A two year's field experiment (1995 and 1996) was conducted on a Typic Xerofluvent in order to study the influence of sewage sludge application on corn yield and nutrient uptake. (environmental-expert.com)
  • In Europe about 40% of the sewage sludge produced is recycled to the land and this percentage is expected to increase (Smith, 1996). (environmental-expert.com)

Assessment

  • This study provides a new tool for the systematic and comprehensive screening of chemicals present in sewage and simultaneous assessment of sewage treatment plant (STP) removal efficiencies. (diva-portal.org)

assess

  • In the present study, nine coagulants having potential to be used for sewage treatment were compared to assess their efficiency in removing total coliform bacteria, Escherichia coli and adenovirus. (environmental-expert.com)

systematic

  • Compared to sewage sludge digestion, the systematic production of biogas by fermenting biowastes is a relatively new sphere. (environmental-expert.com)

plants

  • These packaged plants offer complete preliminary treatment to Raw Sewage or Sewage from Septic Tanks. (environmental-expert.com)
  • 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. (environmental-expert.com)
  • Two plants, Cyperus alternifolius (C. alternifolius) and Coix lacryma-jobi L. (C. lacryma-jobi L.) grown in the VFWM enhanced the purification of Cr(VI) enriched domestic sewage. (environmental-expert.com)
  • No comments were found for Complete sewage pre-treatment plants . (environmental-expert.com)
  • For this reason alone, it seems practical and feasible to incorporate biowastes in existing sewage sludge treatment plants. (environmental-expert.com)
  • Use of treated sewage instead of fresh water in coal power plants, as mandated by the central government, is not feasible as about 87% of coal-fired power plants of nearly 200 gigawatt (GW) capacity have no access to treated sewage water, said a new report released by Greenpeace India on Tuesday. (livemint.com)
  • The report also said those power plants that are able to use treated sewage could see a 300-600% increase in water costs, apart from hundreds of crores in capital investments for treatment facilities. (livemint.com)
  • To address such issues, the Indian government, in its revised electricity tariff policy in January 2016, had mandated use of treated sewage water instead of fresh water in coal power plants within 50 kilometers of a sewage treatment facility. (livemint.com)
  • But Greenpeace India, in its report 'Pipe Dreams,' highlights that less than 8% of India's coal power plants can completely switch from fresh water to treated sewage water and only 5% can partially meet their water requirements from treated sewage. (livemint.com)
  • About 87% or 200 GW of coal power plants would not be able to utilise treated sewage. (livemint.com)
  • Over 50 GW of the coal plants currently under construction would not be able to utilise any sewage for cooling," the analysis added. (livemint.com)
  • The study noted that less than 11% of the total sewage treatment capacity can be utilised by coal power plants. (livemint.com)
  • One of the main difficulties in using treated sewage is that sewage treatment facilities are mostly in metros, far away from power plants. (livemint.com)
  • More than 30 000 of the more than 100 000 chemical substances registered in the EU are estimated to be daily used, of which many will be discharged into the waste-streams handled by municipal sewage treatment plants (STPs). (diva-portal.org)

organic

  • To put this all in perspective, using Meerburg's system, roughly 55 percent of the organic matter can be recovered from sewage, compared to 20 to 30 percent using current methods. (yahoo.com)
  • That is because sewage sludge contains considerable amounts of organic matter and many elements essential for plant growth. (environmental-expert.com)

widely

  • Application of sewage sludge to agricultural land has been widely adopted in all over the world. (environmental-expert.com)

potentially

  • Extracting energy from sewage may not be the most glamorous job in scientific research, but it could turn out to be a potentially transformative one. (yahoo.com)
  • Sewage sludge besides the beneficial substances contains also potentially toxic elements and its recycling in agriculture must be made under control and monitoring of its impacts. (environmental-expert.com)

toxic

  • Carcinogenic hexavalent chromium, lead, and human sewage are just a few components of this toxic stew, which the local population relies on as a source of domestic and agricultural water. (blacksmithinstitute.org)

Application

  • Treatments included control (no sewage sludge, no mineral fertilisation), mineral fertilization (no sewage sludge) and sewage sludge application in total rates from 50 to 130 ton.ha-1 dry sewage sludge, applied gradually during the two years of experimentation. (environmental-expert.com)
  • In Greece research related to the influence of sewage sludge application on crop yield and nutrient uptake is limited. (environmental-expert.com)
  • So, the main purpose of the present study was to evaluate the application of sewage sludge to corn as a substitute of mineral fertilisers. (environmental-expert.com)

water

  • For example, Chhattisgarh, Odisha and Madhya Pradesh together account for 77 GW of coal power but can supply treated sewage water sufficient for just 1.5 GW of coal power," the study said. (livemint.com)
  • The study also said that treated sewage is important for downstream water flows. (livemint.com)
  • To claim that the use of sewage would solve coal power's water problem would be like claiming a drop of water will save a man dying of thirst. (livemint.com)

urban

  • Facilitated by the climate change trends, the increasing number of severe weather events is already triggering flooding of the sewage-dominated rivers into urban and non-urban areas. (environmental-expert.com)

virus

  • In a strange twist, one such virus, cultivated from Jerusalem sewage -- yes, sewage -- may help prevent infections following dental procedures. (sci-tech-today.com)
  • Sewage discharge is considered to be the main source of virus contamination in aquatic environments. (environmental-expert.com)
  • These results have significance for the effectiveness of chlorination as a sewage treatment process, particularly where virus contamination is of concern, and suggest that FRNA bacteriophage would be an appropriate indicator of such viral inactivation under field conditions. (surrey.ac.uk)

further

  • Due to the fact that, apart from extremely cost-effective solutions, the concept of co-fermenting sewage sludge and biowastes offers a number of further, interesting advantages, the process was intensively tested. (environmental-expert.com)

becomes

  • So, the total amount of the sewage sludge produced is expected to rise and the problem of managing the sewage sludge produced becomes pressing. (environmental-expert.com)

rates

  • To ensure that these results were not artifacts of the seeding process, comparisons were made between inactivation rates of laboratory-seeded organisms in sterilized sewage and inactivation rates of organisms occurring naturally in sewage. (surrey.ac.uk)

comprehensive

  • If efforts to develop a comprehensive sewage collection and treatment infrastructure are not implemented, such events have the potential to increase public health risks and cause epidemics, as in the 2015 case of a tularemia outbreak. (environmental-expert.com)