Wastewater Disinfection
Wastewater quality measurement parameters commonly used in India focus on BOD, COD,
TSS etc. Microscopic bacteria & viruses which can neither be seen nor smelled are
present in abundant quantities in tertiary treated wastewater posing a grave but
silent threat. All commonly heard of water-borne diseases such as Typhoid, Hepatitis
and Gastroenteritis originate from wastewater.
Most developed countries that reuse wastewater, have stringent guidelines on the
microbiological contamination levels present in the wastewater before it is allowed
to be reused. These governing bodies, apart from drinking water disinfection, also
pay particular emphasis on wastewater disinfection or treatment required in an urban
setting. Because urban reuse usually involves irrigation of landscapes (with
unrestricted public access) or other types of reuse where human exposure to the
reclaimed water is likely (such as toilet flushing, car washing etc.) Reclaimed
water must be of a higher quality than may be necessary for other reuse applications.
Therefore, while recycled wastewater might appear clean and clear to look at, high
levels of dangerous pathogens require that wastewater is thoroughly disinfected
prior to reuse with the help of a highly efficient Industrial water purification
systems.
Why Use UV for Wastewater Disinfection or for Industrial Wastewater Treatment?
UV technology for water disinfection has become a popular choice worldwide. The
major reason for this is because of its affordability and UV as an alternative to
traditional chlorination is preferred not only for wastewater disinfection but also
for process water disinfection among others.
GoGreen with First Drink Water
The uncontrolled release of chlorinated compounds into the environment has created
a global issue. In keeping with trends in developed countries and taking a responsible
step forward to safeguard the environment, First Drink Water uses environmentally friendly UV
technology for wastewater disinfection and industrial wastewater treatment.
Chlorine Disinfection By-Products
Trihalomethanes and other toxic chlorine by products are known to cause cancer in
humans. When used for gardening, reused wastewater along with these carcinogenic
compounds make their way into the subsoil and water table. When this water is pumped
through borewells and used for drinking these carcinogens put you at risk. Moreover,
chlorinated water with concentrations greater than 5 mg/l causes severe damage to
most plants and as such should not be used for gardening and landscaping purposes
with first dechlorinating.
UV wastewater disinfection is a natural, chemical-free process which produces no
trihalomethanes or carcinogens.
Convenience
Chlorine disinfection creates operational and logistical hassles such as repeated
procurement, storage, handling, dilution and mixing. It requires constant attention
and supervision.
UV wastewater disinfection system utilises no chemicals, works online, requires
no supervision and minimal maintenance.
Operator Safety
Leaks and spills of chlorine may lead to burns, permanent vision damage and lung
damage.
Be it for wastewater disinfection or for industrial wastewater treatment, UV disinfection
presents no handling, safety, flammability or explosion issues.
Cost
Sodium Hypochlorite or “liquid chlorine” is expensive, with high running costs and
associated handling costs.
UV wastewater disinfection system is cost-effective with payback periods in most
cases less than 2 years.