Utilization and Recycling of Treated Waste

1. DEPARTMENT OF CIVIL ENGINEERING
Paper Presentation On
UTILIZATION AND RECYCLING OF TREATED
WASTE
Presented By,
T. RAJARAJAN
A. SURESH KRISHNAN

2. ABSTRACT
 Widespread use of commercial activated carbon is sometimes restricted due
to its higher costs.
 Absorbents utilizing numerous agro-industrial and municipal waste
materials.
 Sewage is treated by a variety of methods .
 There are three main process used for waste water treatment can remove 75
– 95 % of the BOD (Biochemical oxygen demand).

3. INTRODUCTION
 Water availability and use in India accounts- 2.45% of land area and 4% of
water resources.
 The conventional wastewater treatment processes are expensive, require
complex operations and maintenance, it is estimated around Rs. 7,560
crores.
 Sewage contains the nitrogen and phosphorus often it contains pathogens-
Bacteria, viruses, protozoa, parasites.

4. DEFINITION FOR TREATED WASTE
Biological, chemical, or mechanical methods employed to remove
pollutants from industrial or municipal wastes, change the character and
composition of medical waste, or reduce or eliminate its potential for harm
to living beings and the environment.

5. TYPES OF TREATED WATER
 AGRICULTURAL WASTE WATER TREATMENT
 INDUSTRIAL WASTEWATER TREATMENT
 SEWAGE TREATMENT

6. UTILIZATION OF TREATED WASTE
Agricultural wastewater treatment
 To minimize pesticide
impacts, farmers may use
Integrated Pest Management
(IPM) techniques.

7. Industrial wastewater treatment
 Industries that generate
wastewater with high
concentrations of
conventional pollutants
that need specialized
treatment systems.
 Install a pre-treatment
system to remove the
toxic components.

8. (Sewage/wastewater) treatment
 It consists of three process.
 Primary treatment,
secondary treatment and
tertiary treatment.
 First removal of BOD from
water, then removes the
bacteria, finally filter to
make the water into safe.

9. RECYLING OF TREATED WATER
 Waste water collects from
households leads to
treatment center.
 Stage 1: Screening
 Stage 2: Primary
treatment
 Stage 3: secondary
treatment
 Stage 4: final treatment

10. CONCLUSION
 Identifying your facility's waste streams
 Determining how your waste is regulated
 Finding markets for your recyclable materials