..................................................................................................................................................................
Wastewater Treatment
PRIMARY, SECONDARY, AND TERTIARY WASTEWATER TREATMENT: HOW DO THEY
WORK?
BLOGANICA
U.S. wastewater treatment plants process an estimated 34
billion gallons of wastewater every day, but have you ever wondered how it’s
done?
There’s a lot more that goes into wastewater treatment
than you might think.
In fact, there are three distinct steps involved in
traditional wastewater treatment methods. Here’s a quick look at the three
steps involved.
PRIMARY WASTEWATER TREATMENT
Primary treatment of wastewater involves sedimentation of
solid waste within the water.
This is done after filtering out larger contaminants
within the water.
Wastewater is passed through several tanks and filters
that separate water from contaminants.
The resulting “sludge” is then fed into a digester, in
which further processing takes place.
This primary batch of sludge contains nearly 50% of
suspended solids within wastewater.
SECONDARY WASTEWATER TREATMENT
Secondary treatment of wastewater makes use of oxidation
to further purify wastewater. This can be done in one of three ways:
Biofiltration
This method of secondary treatment of wastewater employs
sand filters, contact filters, or trickling filters to ensure that additional
sediment is removed from wastewater.
Of the three filters, trickling filters are typically the
most effective for small-batch wastewater treatment.
Aeration
Aeration is a long, but effective process that entails
mixing wastewater with a solution of microorganisms.
The resulting mixture is then aerated for up to 30 hours
at a time to ensure results.
Oxidation Ponds
Oxidation ponds are typically used in warmer places. In
addition, this method utilizes natural bodies of water like lagoons.
Wastewater is allowed to pass through this body for a
period of time and is then retained for two to three weeks.
TERTIARY WASTEWATER TREATMENT
This third and last step in the basic wastewater
management system is mostly comprised of removing phosphates and nitrates from
the water supply.
Substances like activates carbon and sand are among the
most commonly used materials that assist in this process.
Wastewater treatment may entail a bit more than these
three steps, but they are the basis of how traditional wastewater treatment
facilities operate.
The more you know about the process, the more ideas you’ll
be able to cultivate in order to make a positive change and enhance it.
Organica Water is a global provider of innovative solutions for
the treatment and recycling of wastewater. Organica’s portfolio of solutions
for wastewater treatment covers the full value chain, from Design to Facility
construction (leveraging the Organica Food Chain Reactor solution) and
Operations Management (focused on its Digital Services offering).
No comments:
Post a Comment