Industrial Wastewater Treatment
How Diatomaceous Earth and Perlite Are Used
Dicalite
Management Group
The New
York Times published an article explaining a
quarter of humanity faces a looming water crisis.
17 countries are
currently under severe water distress. Wastewater recycling is one way cited to
combat the grave issue.
The United States
established the Clean Water Act to ensure wastewater is handled appropriately.
This act requires
industrial wastewater producers to treat and discharge their waste to one of
three places:
· Sewer: Industrial waste producers who
discharge to the sewer are required to pretreat their water to meet the
standards of the Pretreatment Program in support of
the Clean Water Act.
· Surface Water: Disposal to surface water sources
is also highly regulated and must meet the state and national standards, such
as National Pollutant Discharge
Elimination System (NPDES), as required. TSS, BOD, oil, and grease are
conventional pollutants which must be reduced prior to disposal.
· Deep Well Injection: This type of disposal is also
highly regulated and, like surface water, must meet the NPDES standard as
required.
Diatomaceous earth
and perlite — two minerals Dicalite Management Group knows well — can be used
to help filter industrial wastewater.
Diatomaceous Earth for Industrial Wastewater Treatment
Diatomaceous earth is
used as a precoat filtration technology.
It is based on the
mechanical separation of solids from liquids to reduce TSS and insoluble
content.
The clarified liquid
passes through the diatom’s intricate but porous structure while the solids are
trapped in the diatomaceous earth precoat.
The leftover solids
are then disposed of responsibly.
It is ideal for
sludge or waste streams that are considered gelatinous or oily because these
substances tend to “blind” the filter, and diatomaceous earth greatly improves
the filterability.
By reducing the press
cycle time and producing dry solids, diatomaceous earth
precoats could
even help reduce treatment costs and save industrial companies time and money.
Dicalite 4200 is one
product featured in Dicalite Management Group‘s industry-leading line of flux-calcined diatomaceous
earth (DE) and
is what in the industry is termed a “direct-run” product.
This means our plant
is able to produce it as the desired product right out of the kiln.
This high-grade
diatomaceous earth is solely mined from the deposit at our Burney, California location, so Dicalite 4200 is
more consistent for our customers, allowing less adjustment due to variations
common with other products.
This allows you to
focus your efforts on process variations without concern for the additional
variations from a filter aid.
Perlite for Industrial Wastewater Treatment
Perlite plays an
important role in municipal and industrial water treatment systems where it is
used in conjunction with a rotary vacuum drum filter to remove solids and other
contaminants from polluted wastewater.
Perlite filter cakes
remain porous and do not compact. Filter cakes built up under pressure release
easier when perlite is used.
This release
facilitates easier cleaning, potentially reduces manpower requirements and
costs, and increases productivity. Plus, the lower weight of perlite filter
cakes may also reduce disposal costs.
You can learn even
more about perlite’s role in filtration in our industry-leading filtration
eBook: A World of Filtration Experience.
Choose
Dicalite Management Group for Your Mineral Needs.
Dicalite and Dicaperl
diatomaceous earth and perlite filter media are offered in a variety of grades
covering a wide spectrum of permeabilities.
The slower
permeability grades, such as Speedplus, are ideal when the clear filtrate is
desired with less than 20 ppm TSS.
For applications with
larger particulates and where clarity is less important, faster permeability
grades such as Dicalite 4200 are recommended.
Dicalite’s products
offer you flexibility, efficiency, and simplicity to obtain the lowest dollar
cost-per-unit treated while meeting all discharge permit requirements.
Call us today at 866-728-3303 to speak with one of our knowledgeable representatives. We’d be happy to send you a free sample so you can see the difference diatomaceous earth and perlite make.
Dicalite
Management Group
is an international industrial minerals company with a unique multi-mineral
platform including perlite, vermiculite, and diatomaceous earth, represented
across three brands: Dicalite, Dicaperl, and Specialty Vermiculite. These
processed minerals are used in wide variety of applications, and people are
often only a few feet from a product created, enhanced, or treated by one of
them—whether or not they know it.
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