A pilot project of DBL Group to ensure groundwater lifting reduce & corporate sustainability.

1. Thanbee Print World ltd.
A Concern of DBL Group
Sardagonj, Kashimpur, Gazipur.
Tele: +880-2-7790075-77,
Fax: +880-2-7790063

2. What’s Wastewater Recycling…
Recycling water (also called waste water reuse or water
reclamation) is the process converting wastewater into
water that can be reused for other purpose. Reused water
may also be directed towards fulfilling certain needs in
residences, industry & even could be treated as drinking
water standards. Reusing wastewater is a long-established
practice as part of sustainable water management allows
water to remain as an alternative source for human
activities.
The most common reasons for establishing a wastewater
reuse program is to identify new water sources for increased
water demand and to find economical ways to meet
increasingly more stringent discharge standards.

3. Why Recycling wastewater….
 Water Recycling is an Asset to a Sensitive Eco-System & Environment.
 Addressing Water Shortage Issues.
 Decrease energy costs from lifting groundwater.
 Lower Operation Costs & pollution Risks.
 Water Reuse Saves Money.
 Water Scarcity and the Global Economy.
 Water Recycling Ensures Sustainability.

4. Wastewater Recycling plant
Running date-November 13,2018

5. DBL group has installed wastewater
recycling plant as a pilot project
1. To ensure water saving practices of Group.
2. Reduce ground water consumption followed to save
energy cost.
3. To fulfill ZLD program reducing wastewater Discharge to
water bodies.
4. Meeting water reuse mandates and Sustainability Goals.
5. To meet sustainable action & vision for a better
environment (SAVE).

6. Basic Information of Thanbee Print World Ltd. Water Recycling plant
Water source Onsite Biological ETP
Capacity as per design 500 m3
Reserve Tank Capacity 342 m3
Status of Flow meter Yes
Type of Flow meter Electro-magnetic
Screening Primary
Filter MGF & ACF
Number of filter 02
Capacity of filter 25 m3
/h
Number of Pump 04 ( 2 Run & 2 standby)
Capacity of Pump 25m3
/h
Applicability
Process screen wash, Toilet flush &
gardening

7. Design diagram of WRP

8. Technical data of Pumps
WATER FEED & LIFTING PUMP
 Quantity : 4 (2 Working + 2 Stand by)
 Capacity : (21-25)^m3/hr. & (40-50)m Head.
 MOC : CI
 In/Out : 2”/2”
 Motor Rating : 7.5 KW/360-440V/3Ph/50Hz
 Brand, Origin : Wilo, Germany / Equivalent
 Control : By Level switch

9. Technical data of Multi grade Filter
MULTIMEDIA PRESSURE FILTER
 Quantity : One
 Type : Down Flow
 Frontal Pipeline : MS, with suitable flange type
 Frontal Valves : Shut-up Valve
 Filter media : Graded sand & gravel
 Media Origin : Sand-Gravel (Local),
 Size : Dia-40 Inch, HOS-72 Inch, Thickness 6mm
Operating Pressure : 4 kg/cm2
Design Pressure : 6 kg/cm2
Treatment Flow rate : 21^m3/hr.

10. Technical data of Activated Carbon
Filter
ACTIVATED CARBON PRESSURE FILTER
 Quantity : One
 Type : Down Flow
 Frontal Pipeline : MS, with suitable flange type
 Frontal Valves : Shut-up Valve
 Filter media : Activated carbon, Graded gravel
 Media Origin : Carbon(India), Graded Gravel (Local),
 Size : Dia-40 Inch, HOS-72 Inch,thickness 6mm
 Operating Pressure : 4 kg/cm2
 Design Pressure : 6 kg/cm2
 Flow rate : 21^m3/hr

11. Flow diagram with snaps

distributed over
Useful water
overhead tank

12. Water Recycling plant sample test Report
Output of this Result:
Decrease the parameter’s of COD,TSS & pH that is better for
wastewater plant sustainability.
Sample ID: WRP (Inle t-Outle t)
Re porting Date : 14.07.1814.11.18
Sample
Collection
Parameters Unit WRP Inlet
WRP
(Outlet)
Remarks
pH - 7.9 7.84
TDS mg/l 127 137
DO mg/l 6 4.5
TSS mg/l 15 13 Photometer
Color Pt-Co 150 150
Turbidity FAU 19 18
BOD mg/l Test running
COD
mg/l 100 46.2
Photometer
Method
Temparature °C 26.8 26.4
Te s te d by,
Md. Khalilur Rahman
Executive(Chemist)-ETP
TPWL,DBL Group
13.11.18
TPWL -ETP LAB
Unit: Thanbe complex
Thanbee print world ltd.
Sardagonj, Kashimpur, Gazipur
Water Recycling plant
Analysis Report of water recycling sample.

13. Groundwater Reduce & Save
energy cost
Month
Total water
consumptio
n (L)
Avarage
consumption
(L)/Month
Energy
Cost tk
1000L/M
onth
Avarage
eng. cost
tk/1000L
ETP Effluent
(L) /Month
Avarage
Recycling(L)
/Month
Daily
water
SAVE(L)
January 10997000 6.1 9339000
February 8548000 5.9 6941000
March 9178000 5.9 7143000
April 8858000 25.12 7423000
May 8846000 5.98 6630000
June 5842000 4.82 3970000
July 7074000 5.6 6713000
August 5900000 5.63 4771000
September 7431000 6.72 6912000
October 7323000 6.3 7197000
Total 79997000 78.07 67039000
Reduce avarage 257842Lgroundwater daily &save 2013.75taka energy cost daily form recycling wastewater 100%
TPWL-Expansion groundwater consumption data-2018
6703900
Daily enegy cost
save by recycling
100%
257842/1000
=257.84*7.81
=2013.75taka
257842
7999700 7.81

14. Application of Recycled Water
At present recycled water are used for TPWL-02
In future we can use for TPWL-01 & PPPL for
 Domestic (toilet flush)
 Process screen washing.
 Gardening
 Car washing.
We can also use recycled water entire TPWL complex as a
 Drinking purpose
 Heavy construction
 For generator cooling water
 Boiler feed water

15. Thank you for watching.
Md. Khalilur Rahman
Executive-ETP
Thanbee Print World Ltd.
E-mail-md.khalilurrahman@dbl-group.com
Cell-01755607659