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  • In submerged configurations, aeration is considered as one of the major parameters in process performance both hydraulic and biological. Aeration maintains solids in suspension, scours the membrane surface and provides oxygen to the biomass, leading to a better biodegradability and cell synthesis.  Water ...

  • ​Cosmetics and personal care products, etc.?  Wikipedia says there is a producer in Neville Island, Pennsylvania. ------------------------------ William Forbes MASCE, PE, ME, BCEE Virginia Bch VA ------------------------------

  • Any plastics or chemical production facilities that discharge to that sewer system?  "Bis(2-ethylhexyl) phthalate" aka DEHP, is an endocrine disrupting Phthalate listed as one of the two "Plastics of Particular Concern" by the Environment and Human Health  group, along with BPA.   Here's an article ...

  • ​​My client, a municipal authority in Pennsylvania with primarily residential sewage customers, has had numerous positive sample results for Bis(2-ethylhexyl) phthalate throughout the sewage collection system.  I understand this is a plasticizer that is soluble in oil, but not in water.  It is not present ...

  • ASCE is already engaged in addressing this issue with regard to technology exchange and influencing policy and decision makers. ASCE is conducting a conference on Urbanization Challenges in Emerging Economies in New Delhi, India on 12 - 14 December, 2017. The theme is "Moving Towards Resilient Sustainable ...

  • Hello, In addition to the above details, I would like to add some more: the main problems/drawbacks in using a MBR for wastewater treatment are the cost of the membrane, energy requirements, and the need for replacement of the membrane when used for a long period of time. Also, membrane fouling causes ...

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