This document describes the Phytorid based sewage treatment system. It can treat a variety of wastewater sources through natural bacterial and plant-based processes with minimal energy and costs. Wastewater flows through sedimentation, filtration and nutrient uptake stages in planted gravel beds. This decentralized approach avoids water pollution issues while allowing for water reuse. The system is low maintenance, odorless, and can meet treated water quality standards at an affordable capital and operation cost compared to mechanical alternatives. It is a suitable technology for small to medium decentralized domestic and agricultural wastewater treatment applications.

1. PHYTORID based sewage treatment system
Presented by

2. Sources
• Municipal/domestic waste water
• Strom water discharges
•Hotel and Offices
• Agricultural runoff
• Landfill leachates
• Industrial wastewater
Environmental and
Health Impact
• Ground water pollution
• Eutrophication of lakes and
other water bodies
• Degradation of river water
quality
• Impact on public health
Treatment
• Reuse/recycle
• Avoiding contaminations in
water bodies
• Decentralized approach for
reducing pressure on civic
bodies

3. Ground water pollution
Eutrophication in lakes
and other water bodies

4. Odor problems
Mosquito nuisance and breeding of insects
E-coli and other pathogenic micro-organisms
can contaminate drinking water sources
Spreading of communicable diseases like
cholera, dengue, malaria, etc
Impact on bathing quality of rivers, beaches
etc.

5. Processes
Sedimentation
Bacterial action
Filtration
Adsorption
Precipitation
Decomposition
Nutrient uptake
Vegetation system
Phytorid bed
Treated water storage
Sewage
collection
tank
Settler/screen

7. Subsurface Flow System
Reduced odour – no wastewater
at surface
Propagation of insects is also
controlled
 Microbes that treat the
wastewater live on the gravel,
soil and plant surfaces
plants provide oxygen and food
for the microbes
8

8. 10
Sr. Items Conventional
activated
sludge
UASB Extended
Aeration
Facultative
Aerated
Lagoons
PhytoRid
Technology
1 Performance
BOD Removal
%
85-92 75-78 95-98 75-85 80-95
2. Sludge First digest
then dry on
beds or use
mech devices
Directly dry on
beds or use mech
devices
No digestion
dry on sand
beds or use
mech devices
Mech.
Desludging
once in 5-
10 years
Negligible
3. Equipment
Requirement
(excluding
screening and grit
removal common
to all processes)
Aerators,
recycle pumps,
scrappers,
thickeners,
digesters,
dryers gas
equipment
Nil except gas
collection and
flaring gas
conversion to
elect is optional
Aerations,
recycle pumps
sludge,
scrappers for
large settlers
Aerators
only
Water pump
(no pump is
required if
flow by
gravity).
4. Operational
Characteristics
Skilled
operation reqd.
Simpler than ASP Simpler than
ASP
Simple Unskilled
operator
5. Special features Considerable
equipment and
skilled
operation reqd
specially when
gas collection
and usage
considered
Minimal to
negligible power
reqd. makes it
economical at
even if gas
revenue is
neglected
BOD removal
highest
effluent
nitrified high
power reqd.
Favoured for
small and
medium
plants
Power reqd.
similar to
ASP
operation
simpler
Plant species
and odour
less
operations
Typical Performance Characteristics for Various Treatment MethodsTypical Performance Characteristics for Various Treatment Methods

9. Various Plant Types
Water Hyacinths Eichhornia crassipes
Forage Kochia Kochia spp
Poplar Trees Populus spp
Willow Trees Salix spp
Alfalfa Medicago sativa
Cattail Typha latifolia
Coontail Ceratophyllum demersvm L
Bullrush Scirpus spp
Reed Phragmites spp.
American pondweed Potamogeton nodosus
Common Arrowhead Sagittaria latifolia

10. Cost of Operating Phytorid
Capacity
[ Liters /
day ]
Capital
Cost
Rs ( in
lakhs)
Cost of co
nstruction Rs
( in lakhs)
Running
Cost
[ Rs / 1000
liters]
Time to
Commissio
ning
Land
requirem
ent with
clarifier
Land
requirement
s
Without
clarifier
Annual
O&M Cost
[ % of
Capital
Cost ]
10,000 2.3 1.5 Rs 0.8- 1.00 3 months 250 sq ft 350 sq ft <3-5%
30,000 3.6 2.8 Rs 0.8-1.00 3 months 500 sq ft 750 Sq ft <3-5%
100,000 8.5 10.5 Rs 0.8-1.00 3 months 1300 sq ft 1800 Sq ft <3-5%
1000,000 55 65 Rs 0.8-1.00 4 months 13000 sq
ft
18,000 sq ft <3-5%
•Conventional & Mechanized technologies like ASB, UASB, SBR, MBBR are too expensive and
require 30% of the capital cost as annual O&M costs. At an average these processes pose water
treatment costs of Rs 6-8/ 1000 Liters.
•In case where gravity may not work single pump shall be required for maintaining water flow.

11. ADVANTAGES
Cost-effective
Operation and maintenance expenses are negligible.
Minimum electricity requirement
Smaller footprint (Retention time: Typically less than 24 hrs.)
Facilitates recycle and reuse of water
No foul odor and No Mosquito Nuisance.
Tolerates fluctuations in operating conditions such as flow,
temperature and pH

12. PHYTORID system is useful for treatment of waste water in
following applications
 Domestic wastewater (including decentralized Municipal waste water
treatment)
 Colonies, Airports, Commercial complexes, Hotels
 Open drainage
 Cleaning of nallah water
 Agricultural wastewater
 Dairy waste
 Slaughter House Waste
 Fish pond discharges
 Pre treated industrial wastewater (PHYTORID can be polishing)
 Municipal Landfill leachates
 Several other applications

13. Product Water
quality
Treated water complies to the regulations laid down by
CPCB to reuse the water for the purpose of discharge,
gardening agriculture etc. For flushing and cooling tower
uses, tertiary treatment will be required.

14. Green Points
Best Adoptable technology for treatment and reuse of
waste water
Phytorid Technology carryout on-site treatment and reuse
of grey water up to 95%, which would attract total of 5
credits on Indian Green Building Certification (IGBC).

15. aesthetics

16. Pollutant Performance
(% removal)
Total suspended solids 75 – 95
Biochemical oxygen
demand
70 – 80
Chemical oxygen demand 60 – 75
Total nitrogen 60 – 70
Phosphate 50 – 60
Fecal coliform 85 – 95
Treated water quality will meet the specified
norms of CPCB/MPCB for water reuse

17. •Works on gravity
•No electric power
requirement
•Scalable technology
•Easy to maintain
•Adds to aesthetics
•Cost effective

19. CONTACT US
Amit Kaushik
A3S Enviro & Consultants
202, 2nd
floor , Kaushalya Tower, Vanasthali Marg , Jaipur , Rajasthan
Email: info@a3senviro.com URL: www.a3senviro.com
Mob: 9785120189, 9560419735