How can sewage system be improved??
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Answers
Answer:
New chemical threats – new chemicals are approved every day and wastewater treatment plants do not remove all chemicals from sewage. ...
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Challenges to reducing sewage pollution and making improvements include:
New chemical threats – new chemicals are approved every day and wastewater treatment plants do not remove all chemicals from sewage. For example, there are concerns about pharmaceuticals, microbeads, caffeine and many toxic contaminants that are not removed during the treatment process.
Crumbling infrastructure and underinvestment – Federal investment in sewage treatment started as grants and then transitioned to the state revolving fund loans that have invested billions in improvements. Despite this, overall investment has not kept up with aging infrastructure, now taxed by sprawling development and climate change, leading to a spending gap of over $100 billion over a 20 year period.
Failure to control nutrients – treatment standards for sewage treatment plants typically do not require control of excess nutrients such as phosphorus and nitrogen as part of permit limits.
Permit limits may not be protective of the environment – Even with standards and permits in place, permit limits and conditions are often not protective enough and many sewage treatment plants are not in compliance with their permits, and some permits allow bypass of treatment facilities.