WATER + INFORMAL
vehicle+package purification
mobile tanker 0.5 TK / L
warehouse
standpipe 0.018 TK / L 1643 * 100 H
filling
storage
delivery
32%
filtering 3000 TK
68%47%during hazardsformal
90%
30% boiling 1000 TK
tap water POTABLE
cosumption
direct use hand pump 0.05 TK / L or free 2830 * 75 H
0.05
tubewell 40,000 TK
USER
10% filter
deep groundwater
tap water resell
0.006
transportation
tap 0.006 TK / L 325,717 H 2246301369 L/D
30%
jar 0.018 TK / L
20%
20%
80%
treatment
pipe
67% 33%
bottle
reservoir
shallow groundwater groundwater 3MLD/t 400 TK / LD
tank private reselling
0.006 TK / L
80%
78% obtainment
investment
400 TK / LD
EXTRACTION
purification cost 0.006 TK / L
23.8%
90 TK / LD
22%
65% 35%
surface water 299.1MLD/p 90 TK / LD
1.5 0.5
tanker
13 TK / L
44.2%
rainwater
vendor 13 TK / L 4826 L/D jar to door 1.5 TK / L
80% 10%
slum
jar *DWASA Annual Report 2012-13. 2013. p64 http://en.wikipedia.org/wiki/Water_management_in_Dhaka#cite_note-Khan-1 Uddin & Baten. Water Supply Of Dhaka City: Murky Future. 2011 Hall. Bangladesh - Water - Union initiative in Dhaka water service.2010. Khan.Dhaka Water Supply and Sewerage Authority: Performance and Challenges. 2010. Water Security in Dhaka City http://bikroy.com/en/electric-kettle-for-sale-dhaka-1
auto pump 0.05 TK / L or free
borehole
I. The local water authority DWASA is getting much better in covering water supply. II. Water source is the problem. Ground water source from aquifer is depleting, DWASA is relying more on surface water source. III. Where service is not covered the informal business find innovative ways to fill the gay. The informal sector has an important portion in nearly every industry.
100% tubewell + well water
peri-urban
RAN YANG // KIERAN / TIMBERLAKE / DHAKA / MAY 8, 2014 / FINAL REVIEW
BURIGANGA
Buriganga river smells, it’s heavily polluted water that does not support any fauna or flora with a 0 DO level. The BOD exceeds 5 times of a living water ecology.
EFFLUENCE 600,000
Total load (kg/d)
500,000 400,000
60%
300,000
Load in kg/day
200,000
40%
100,000
Industrial effluence
Domestic sewage discharged Domestic sewage retained
0 2006
2010
2015
Computed BOD Loadings of All Industrials Clusters
Sewage water was dumped into river. Tannery, garment and chemical industries all dump their effluence directly into river. Industries effluent contributes 60% of water pollution, and the untreated domestic sewage counts for 40%.
Paul & Haq. 2010. Presentation from the 2010 World Water Week in Stockholm
INDUSTRY
Tongi Industrial Area Textile Dying + Chemical Pharmaceutical
214 ha 200 units
3.8 ton BOD /d
Tejgaon Industrial Area Textile Dying+Printing+Composite+Washing +Chemical+Bitumen Emulsion+Insecticide Savar South Tannery Estate
Hazarlibagh Tanneries
80 ha 195 units
295 ha 130 units
66.7 ton BOD /d
25 ha 249 units
46.3 ton BOD /d
12 ton BOD /d
> BOD standard(6 mg/l) Average exceedance of BOD standard (6 mg/l) for water usable for fisheries and suitable for drinking supply after conventional treatment,
76,000 ha 270 units
> 500 % 200 â&#x20AC;&#x201C; 500 % Narayanganj Industrial Area 100 â&#x20AC;&#x201C; 200 % <100 % acceptable quality 1km
known sewage outfalls
DHALESHWARI
The 4 largest factory clusters inside Dhaka city all located along the 4 river loop, combined with sewage, they makes most part of watersheds dead.
47.5 ton BOD /d
TURAG-BURIGANGA
BALU-SITALAKHYA
http://www.dhakaherald.com/news/business/start-construction-of-savar-cetp-by-in-one-week/. Parliamentary Standing Committee on Ministry of Environment & Forests. 2010. Pollution Abatement Strategies for Rivers and Wetlands in and Around Dhaka City
leather TANNERY
textile DYEING
paper BLEACHING
pH
5
12.3
7-9
BOD mg/L
700-800
800
90-150
15,000-18,000
2,000
400-1,200
3,000-4,500
7,000
700
Cr CHROMIUM 2,500- 3,000
Cr, Pb, Ni, S
Cr, Pb
biodegradable organic compounds (biochemical oxygen demand)
TSS
mg/L
total suspended solids
TDS mg/L total dissolved solids
HEAVY METAL mg/L
Among Dhaka industries, leather tannery, textile dyeing, and paper breaching counts on the most toxic sectors. However, the leather making itself includes the 3 processes, tanning, dyeing and bleaching/liming.
TANNERY INDUSTRY IS RELOCATING. HOW TO UTILIZE AND IMPROVE WATER, WHILE PREVENTING POLLUTION OF THE NEW LOCATION AND REMEDIATING THE OLD LOCATION?
1. [HARZARIBAGH OLD TANNERY] < REMEDIATION
Part of the soil is contaminated by leachate of toxic effluence.
2. [SAVAR SOUTH NEW TANNERY] < PREVENTION
As it is also located right along the Dhaleshwari river, prevention of polluting the clean watershed should be addressed.
1. http://ourworld.unu.edu/en/colours-of-water-bangladeshs-leather-tanneries
3. [LIVING WATER] < RIVER ECOLOGY
As water quality gets better, macro invertebrates like prawn and crab goes back and as keystone species they provide food for Sarus crane and otter, and eats invasive marsh grasses and algae. They also provide income for fishers.
1. AGP/Getty Images. http://www.dailymail.co.uk/news/article-2585932/Fishing-otters-Age-old-Bangladeshi-tradition-involves-harnessing-mammals-like-reindeer-chase-fish-nets.html 2. Arifur Rahman Chowdhury, Sringair, Manikgonj, Bangladesh. http://www.solifestyle.com/2011/04/photo-of-day_21.html 3. http://en.wikipedia.org/wiki/Sarus_Crane
FLEE UP STREAM 6-12 SENSITIVE: BOD
MG/L
MACROINVERTEBRATES - WATER QUALITY TOLERANT: BOD
12-36
MG/L
VERY TOLERANT: BOD
1:HAZARRIBAGH: REMEDIATION
2: SAVAR SOUTH: EFFLUENT CONTROL
3:DHALESHWARI-BURIGANGA: WATER ECOLOGY
As the tannery moves upstream, water quality changes, and fair water macro invertebrate migrates both ways, the river system get alive again.
M
1K
36+
MG/L
1965
First tannery started to operate.
2003
Two main tannery associations agreed with the government that some 150 member-tanneries in Hazaribagh would relocate.
2009
High Court ruled that the government should ensure that the Hazaribagh tanneries relocate outside of Dhaka or close them down.
2014 No tannery has relocated.
• THE DELAY OF RELOCATING OF EXISTING TANNERY IS DUE TO A LACK OF VISIBLE BENEFIT. • AUTHORITY IS PAYING BILLS FOR A NEW CENTRAL TREATMENT PLANT. • TANNERY OWNERS ARE PAYING FOR PROPERTY MORTGAGE ON THE NEW SITE.
1. Human Rights Watch. 2012. Toxic Tanneries, The Health Repercussions of Bangladesh’s Hazaribagh Leather 2. A. K. Bhowmik. 2011. Environmental Sustainability vs. Political Decision: A Review of the Bangladesh Leather Processing Industry Relocation Plan.
[HARZARIBAGH OLD TANNERY] - EXISTING
SLUICE GATE 1
PRETREATMENT
2
LAGOON
COLLEGE OF LEATHER ENGINEERING
CONTAMINATED SOIL BURIGANGA
EMBANKMENT
The effluent goes through the lagoon and eventually dumped into Buriganga. The leachate of lagoon has caused the surrounding soil contaminated.
TANNERY
1. Human Rights Watch. 2012. Toxic Tanneries, The Health Repercussions of Bangladeshâ&#x20AC;&#x2122;s Hazaribagh Leather 2. A. K. Bhowmik. 2011. Environmental Sustainability vs. Political Decision: A Review of the Bangladesh Leather Processing Industry Relocation Plan.
1. SUPERFICIAL REMOVAL
Removal of superficial wastes - sludge in lagoons and wastes on dump sites.
2. VISIBLE EXCAVATION
Excavation of the visible soil pollution - buried wastes, organic soils.
3. SOIL POLLUTION
Excavation of the rest of the soil pollution based on chemical analysis.
TANNERIES
4. TOPSOIL REMOVAL
Removal of several meters of topsoil as a remediation work before constructing new buildings.
5. DEEPER SOIL
For deeper soil layers, in situ techniques that treat the contamination in place.
6. CAPPING
Covering the soil with a concrete layer or a foil.
7. PHYTOREMEDIATION
Covering the soil with a concrete layer or a foil.
Pretreatment of the lagoon and contaminated soil.
DUMP SITE LAGOON
DRY SEASON
SLUICE GATE
6 60
0 BOD (mg/l)
1KM
BOD level tops at dry season when pollutes got concentrated in small river volume.
0 J
F
M
A
M
J
J
A
monsoon
S
O
N
D
water level(m)
Jan 21, 2006
Human Rights Watch. 2012. Toxic Tanneries, The Health Repercussions of Bangladeshâ&#x20AC;&#x2122;s Hazaribagh Leather Google earth
MONSOON
SLUICE GATE
6 60
0 BOD (mg/l)
1KM
During monsoon, when flood plain got immersed, pollutant was washed further away and contaminates the flood plain soil.
0 J
F
M
A
M
J
J
A
monsoon
S
O
N
D
water level(m)
Nov 12, 2004
Human Rights Watch. 2012. Toxic Tanneries, The Health Repercussions of Bangladeshâ&#x20AC;&#x2122;s Hazaribagh Leather Google earth
TANNERY PROCESS
RAW HIDE
pretanning
soaking
de fleshing
liming - de haring
bating
pickling
main tanning
tanning
sammying
sorting
splitting
shaving
WET-BLEU
wet-finishing
re tanning
dyeing
fat liquoring
setting
drying
CRUST
finishing
conditioning
buffing
trimming
plating
finishig
LEATHER
The tannery process consists of the chemical and physical process, cleaning up the rawhide, tanning the hide to refine the surface, dyeing it, and trimming, reconditioning and decorating it to make final leather product.
1, Human Rights Watch. 2012. Toxic Tanneries, The Health Repercussions of Bangladesh’s Hazaribagh Leather 2, United Nations Industrial Development Organization - Regional Programme for Pollution Control in the Tanning Industry in South-East Asia. 2000-08-09. “The scope for decreasing pollution load in leather processing (US/RAS/92/120/11-51)”
DISCHARGE
flesh- BOD ings RAW HIDE
pretanning
soaking
COD de fleshing
shav- trimings mings main tanning
tanning
wet-finishing
re tanning
liming - de haring
BOD
sammying
trimmings
BOD dyeing
solid residues finishing
conditioning
salts organic N
SS
buffing
COD
SS
fat
solvents
trimming
pickling
salts chrome + Cr
splitting
fat liquoring
liquid residues
NH3
bating
sorting
COD
H2S
shaving
WET-BLEU
drying
CRUST
finishig
LEATHER
chrome dyes Cr+ setting
CH2O plating
gas discharge
20,000 m /day 3
Various gas, liquid and solid discharge each main stage creates.
liquid discharge solid discharge biodegradable
1, Human Rights Watch. 2012. Toxic Tanneries, The Health Repercussions of Bangladesh’s Hazaribagh Leather 2, United Nations Industrial Development Organization - Regional Programme for Pollution Control in the Tanning Industry in South-East Asia. 2000-08-09. “The scope for decreasing pollution load in leather processing (US/RAS/92/120/11-51)”
non-biodegradable
STRATIFICATION + PRODUCTION
MANGO/JACKFRUIT/TAMARID CANOPY: DUST ABSORTION mir
SLUICE GATE
d.
FORMER TANNERY SITE: INDUSTRIAL PARK
r pur
sadar
IN-SITU HERBACEOUS: SCREENING
ghat gabto
COLLEGE OF LEATHER ENGINEERING
li rd.
BAMBOO/PALM PIONEER SPECIES:
new elephant
BACK-EMBANKMENT PONDS: SEQUENCED FILTERING
rd.
d.
nilkhet r
CULTIVATION/ORCHARD
INUNDATED COMMUNITY: DE NUTRITION ADAPTABLE NATIVE COMMUNITY: TOPSOIL REMEDIATION
SEASONAL FISHERY /PADDY FILED SHIPPING CHANNEL
FLOODPLAIN MARSHES: SEDIMENTATION 1KM
1KM
Flood Buffer + Aquatic Water Treatment
1KM
Remediation
Industrial Park + Productive Pods 1. Human Rights Watch. 2012. Toxic Tanneries, The Health Repercussions of Bangladesh’s Hazaribagh Leather 2. M.N. Uddin. 2005. The relationship between Urban Forestry and Poverty Alleviation -Dhaka as a case study
DE URBANIZATING [[HAZARIBAGH] MICROBE SOIL CONDITIONING + NITRIFICATION
MACROINVERTEBRATE FISHERY + DE NUTRITION
SUBMERGENT HYACINTHS+ ABSORPTION
EMERGENT SEMIAQUATIC + SEDIMENTATION
water hyacinth
organic
N
N
salts proteobacteria
aman monsoon sow
+ SEDIMENTATION
lpomoea aquatica
live water
+ SCREENING /REMEDIATION
pumpkin
+ RETENTION
FLOOD PLAIN
BURIGANGA
sacred basil
acrostichum aureum
+ ABSORPTION
+ DE NUTRITION
biodegradable effluent
solid residues
cyperus spp
prawn
NH3 jackfruit
boro winter sow eggplant
chrome Cr+
+ NITRIFICATION
cauliflower
fat
clam
algae
trimmings
COD
NH3-N
mango
sunflower
rice
cryptocoryne ciliata
H2S
fleshings
shavings
BOD
crab
actinobacteria
PADDY RICE + RETENTION
SS sagittaria montevidensis
organic
CANOPY HERBACEOUS ORCHARD + DUST CULTIVATION + SCREENING ABSORPTION /REMEDIATION
EMBANKMENT
tannery effluent
CULTIVATION +
LAGOON + DUMP
HAZARIBAGH TANNERY SITE
10 yr RICE + HYACINTHS+
SOIL CONDITIONING + 7
UPLAND
SEMIAQUATIC +
FISHERY +
MOONSON FLOOD
SWAMP 3 0
POST - MOONSON
MARSH
IL TOPSO D RUCTE CONST ND WETLA G
WATER ROUND
domestic sewage
DROUGHT
AQUATIC
Phasing the process of remediation, and creating immediate benefit. Developers, job seekers and residents begin to involve in the process of revenue making and mission achieving. International leather sectors will be more willing to invest in Dhaka. Eventually this de urbanization of the site brings a productive riparian green shore for downtown Dhaka.
2. renewable energy
1.safe/reusable material
3. efficient water
5.waste recycling
4. waste reclaiming
6. safe water
DE FLESHING > CHICKEN BOILER
When trying to apply it to Dhaka, it is really about looking at using and reusing waste. Flesh collected can be boiled as soup to feed chicken, which they are already massively doing.
1. Aninda Kabir Avik. https://www.flickr.com/photos/avikbangalee/sets/72157622415500839/
LIMING <SHELLFISH LIME + > FLOAT RECYCLING
Ca(OH)2 Calcium hydroxide Liming agents can be substitute from shellfish lime and be more efficiently reused inside its own cycle by float recycling.
1. Tonia Sing Chi. http://homescale.wordpress.com/makinglime/ 2. Fattah Khan. https://flic.kr/p/9NLLua
DE LIMING + BATING + PICKLING > ACID COLLECTING
NH3-N Ammoniacal nitrogen
SO42â&#x2C6;&#x2019; Sulfate
CH2O2 Sulfate Soaking the leather in acidic liquid and discharge acid effluent.
1. Tonia Sing Chi. http://homescale.wordpress.com/makinglime/ 2. Fattah Khan. https://flic.kr/p/9NLLua
TANNING < TREE
chrome Cr+
tree tannin
Chromium Tanning agents can be substituted using natural tanning agent extracted from bark, leaves and fruit. The effluent can be non-biodegradable
1. Tonia Sing Chi. http://homescale.wordpress.com/makinglime/ 2. Fattah Khan. https://flic.kr/p/9NLLua
DYEING < VEGETATION plant part BARK
Acacia Catechu Deciduous 15m
FRUIT/SEED
Bixa Orellana Shrub 4m
Areca catechu Evergreen 20m
ROOT
PEEL
Terminalia chebula Rubia cordifolia Punica granatum Deciduous 30m Herbaceous 1.5m Shrub 6m
LEAF
FLOWER
Allium cepa Indigofera tinctoria Camellia sinensis Tagetea erecta Herbaceous 0.5m Shrub 1.5m Shrub 1.8m Herbaceous 0.8m
medicine/food
Catechu
Achiote
Areca nut
Haritaki
Maddar
Pomegranate
Onion
Indigo
Tea
Marigold
ORANGE
PINK
GOLDEN
RED
KHAKI
YELLOW
BLUE
LIGHT KHAKI
GOLDEN
dye
BROWN
Dyeing agents can also find native plants to replace. Effluent is biodegradable.
1. Prabartana, Dhaka. Natural Dyeing Information, production and exercise 2. wikipedia.org
FINISHING <> BONDED LEATHER
Leather leftovers are shredded and then bonded back into larger sheets. *
1. http://en.wikipedia.org/wiki/Bonded_leather
QUALITY CONTROL: JUGAAD INNOVATION: CAPITAL:
governmental regulation informal sector domestic and international investors
In Dhaka, the innovative ways informal sectors recycle waste provides lessons for Industrial transformation. Collaborating with bottom-line quality control from governmental regulation and domestic and international investors, Dhaka has potential to lead innovation on green industry.
PRODUCTION CYCLE
SOFTEN HIDE
RAW HIDE
DE FLESHED HIDE CLEAN FLESH BOILED TO FEED CHICKEN IN NARAYANGANJ
TANNED HIDE USING HARITAKI TREE TANNIN
FOOTWEAR MANUFACTURED IN SAVAR EPZ
BONDED LEATHER USING RECYCLED LEATHER PIECES IN SAVAR SOUTH
DYED HIDE USING NAYA BAZAR GROWN VEGETATION EXTRACTED DYES DE HAIRED HIDE
1. Aninda Kabir Avik. https://www.flickr.com/photos/avikbangalee/sets/72157622415500839/
PRODUCTION CYCLE
BALU RIVER
TONGI CHEMICAL INDUSTRIES
CATTLE RANCH
CHEMICAL RECLAMATION
BADDA PASTURE
TANNIN TREE PLANTATION
POULTRY SOUP BOILER
LIME SHELL FISHERY
FOOTWEAR MANUFACTURE
KAUNDIYA ORCHARD
TURAG RIVER NARAYANGANJ CHICKEN FARM
LEATHER BONDING
SAVAR EPZ FOOTWEAR
HAZARRIBAGH SHELL FISHERY
SAVAR SOUTH NEW TANNERY
NAYA BAZAR PLANTATION
DHALESHWARI RIVER
DYEING AGENTS CULTIVATION
Leveraging the waterway shipping river loop. The whole production cycle from cattle ranching to leatherwear can all be ‘Made in Dhaka’.
BURIGANGA RIVER
PRODUCTION CYCLE
Mymensingh poultry farm
Kushtia ranch
85,000 ton
CATTLE RANCH
21,250 ton
*fleshing waste: 2010-2011
POULTRY SOUP BOILER
Khulna shellfishery
Dhaka tannery
Sundarbans mangroves
110 ton
84% wasted
20,400 km
*oyster, mussels and clam
LIME SHELL FISHERY
CHEMICAL RECLAMATION
Rangpur plantation
16,185 km
2
TANNIN TREE PLANTATION
1. http://en.wikipedia.org/wiki/Sundarbans 2. http://en.wikipedia.org/wiki/Rangpur_Division 3. http://en.wikipedia.org/wiki/Port_of_Chittagong
2
DYEING AGENTS CULTIVATION
4.
Chittagong port
Chittagong port
551,000 ton
$500M usd
*leather produced: 2010-2011
LEATHER BONDING
*leather product export: 2010-2011
FOOTWEAR MANUFACTURE
FAO. 2012. World Statistical Compendium for raw hides and skins, leather and leather footwear 1993-2012 5. http://en.bdfish.org/2013/05/economic-importance-shellfish-bangladesh/
TANNIN TREE PLANTATION
NEW STREAMLINE: SOLID WASTE DYEING AGENTS CULTIVATION
tree tannin
LIME SHELL FISHERY
natural dyes shell lime ig
h finis ng dyei g
ng
shi e fl e
d
ng limi ng ri a h de
g+ n i t a b ling k c i p
in tann
leather residues
acid LEATHER BONDING
lime fleshings
A new streamline workflow is to facilitate this material flow. As logistic route passing through each step making rickshaw transporting waste easier and elevated roof to resease toxic gas.
FLOAT RECYCLE
POULTRY SOUP BOILER
CHEMICAL RECLAMATION
NEW STREAMLINE: EFFLUENT
BOD COD BOD
fat
COD BOD
dyes
COD organic
BOD
N chrome
COD
Cr+
salts organic
BOD
N
COD salts
BOD
Water gullies through central lower point of the plants lead biodegradable and toxic effluence separately using gravity.
organic
COD SS
N
acid
liquid residues
SAVAR SOUTH
Jan 17, 2014
0 PLOT CLAIMED
Till now the plot allocated is still empty. The site is right along the Dhaleshwari river and surrounded by farmland. Savar industrial zone on the North begins to sprawl southward.
8. PLANTATION + UNITS
The vegetation prevents erosion of the underlying soils.
7. TOP SOIL
Helps to support and maintain the growth of vegetation by retaining moisture and providing nutrients.
6. LEACHATE COLLECTION LAYER
A layer of sand or gravel or a thick plastic mesh called a geonet collects leachate and allows it to drain by gravity to the leachate collection pipe system.
TANNIN ORCHARD
5. FILTER GEOTEXTILE
A geotextile fabric, similar in appearance to felt, located on top of the leachate collection pipe system to provide separation of solid particles from liquid.
BUFFER SLOPE
4. LEACHATE COLLECTION PIPE SYSTEM
Perforated pipes, surrounded by a bed of gravel, transport collected leachate to specially designed low points sumps.
3. GEOMEMBRANE
A thick plastic layer forms a liner that prevents leachate from leaving the plant and entering the environment.ate.
2. COMPACTED CLAY
Is located directly below the geomembrane and forms an additional barrier to prevent leachate from leaving the p and enter- ing the environment.
1. PREPARED SUBGRADE
The native soils beneath the plant are prepared as needed prior to beginning plant construction.
Pretreatment in the new site is soil capping to prevent leachate.
LINED PLOTS
LAYOUT SPECIALIZED DYEING
A 0.72ha=7200m2=90*80m 24plots $103,000/p
SPECIALIZED TANNING
B 0.36ha=3600m2=90*40m 36plots $51,500/p
C 0.18ha=1800m2=90*20m 104plots $25,750/p
workflow
WORKFLOW
non-biodegradable effluence biodegradable effluence
EFFLUENCE
PLOT TYPE
1KM
HOUSING
.0
10
2
m
60
6.0
15
.0
3.0
.0
20
4 household / storey * 5 = 20 tanners with household = 300 m2 12000 tanner with household = 225000 m2 = 22.5ha
CLASSIFICATION + ADDITIVE
a ak
dh ric -a
TOXIC WATER COLLECTION
ha
SEWAGE DISCHARGES
y hw
ONE UNIT LINE
savar - manikganj hwy
COMMUTER ROAD
SOIL CAPPING 66.5HA
DYES GARDEN
WATERWAY STATION
TANNER HOUSING 24HA
SEWAGE IRRIGATION
GREEN PATH
STREAM-LINED PROCESSING TANNIN ORCHARD
SHELL CLAM NURSERY
SHIPPING CHANNEL
CUT BACK EFFLUENT WETLAND 1KM
1KM
Water Diversion
1KM
New Tannery
Satellite Settlement 1. Human Rights Watch. 2012. Toxic Tanneries, The Health Repercussions of Bangladesh’s Hazaribagh Leather 2. M.N. Uddin. 2005. The relationship between Urban Forestry and Poverty Alleviation -Dhaka as a case study
URBANIZING [SAVAR SOUTH] SAVAR SPRAWL
FARMLAND DHALESHWARI
domestic sewage
FLOOD PLAIN
10 yr UPLAND PLANTATION
TOPSOIL LLECTION LEACHATE CO
irrigation
GROUNDWATER
DRY SLOPE ORCHARD + TANNIN
INDUSTRY RIVERBANK
LOWLAND GARDEN + DYE
non-biodegradable effluencent
MARSH EROSION CONTROL
GRAVEL BED FLOOD BUFFER
CAPPED SOIL TANNERY
biodegradable effluent
effluent wetland
Engineering terrain to lead water, this new site tries to provide a livelihood to tanners and their family members. The strategic urbanizing enables opportunities for green industry and informal innovation.
HAZARIBAGH TANNERY VACATING
249 units
NEW PROCESS SHOWROOM
19 units
1 unit
fruit harvest after 5 yrs
canopy mango / jackfruit/ tamarid
1
phytostabilization
sub-canopy bamboo / palm
1
phytoextraction plant 2rd yr
soil
in-situ treatment
REMEDIATION
1
timber harvest after 5 yrs 1
phytotransformation mow 18 months
herbaceous native community
1
sowing
1
fruit harvest after 3 yrs
1
1
1
1
1
1
1
1 1
1 1
1
1
INDUSTRIAL PARK
function in 5 yrs wetland ponds construction
constructed wetland
harvest 1st yr
paddy boro
1
sowing / retention harvest 1st yr
paddy aman emergent semiaquatic submergent water hyacinth macroinvertebrate prawn / clam / crab
1
1
1
1
sowing / retention
1
1
1
1
sedimentation absorption fishery + de nutrition
microbe
soil conditioning + nitrification
EFFLUENCE TREATMENT
PRODUCTIVE RIVERFRONT
6
60 BOD (mg/l) 0
water 0 level(m)
BURIGANGA LIVING BURIGANGA CALENDAR J FMAMJ J A SOND J FMAMJ J A SOND J FMAMJ J A SOND J FMAMJ J A SOND J FMAMJ J A SOND J FMAMJ J A SOND J FMAMJ J A SOND J FMAMJ J A SOND J FMAMJ J A SOND J FMAMJ J A SOND monsoon 2014
SAVAR SOUTH TANNERY ESTATE
0 unit
achiote maddar marigold
3
1
2017
3
1 2
harvest 3rd yr
2
1
2
3
1
2
3
sowing sowing sowing
1 2
2020
1
2
1 3
2021
2022
2023
SAVAR SOUTH GREEN TANNERY 195 units
1 1
2
harvest 3rd yr 1
1
1 1
3
1
2
1
2
1
drying 1.5m
1
2
1
1
2
1
1
2
1
1
3
2
1
1
1
1
2
1
2
1
1 1
1
1 1
3
1
1
1
3
1
3
2
1
1
1 2 1
1
1
3
1
3
2
1
1
1 2 1
1
1
3
1
3
2
1
harvest 5th yr
1 2 1
1
1
3
1
3
2
1
1
1 2 1
1
1
3
1
1
1
harvest 4th yr
1 2 1
1
harvest 1st yr
3
1
harvest 5th yr
sowing
tea
2019
3
1
sowing
onion
1 2
1 1
3
2018
3
harvest 3rd yr
sowing harvest 1st yr
sowing
1 2 1
pomegranate
VEGIE DYEING + TREE TANNIN
1 2
sowing
areca nut
haritaki
3
sowing
2016
185 units
harvest 1st yr 1 2
indigo
2015
1 1
DYE GARDEN + TANNIN ORCHARD
1
DHAKA INDUSTRIAL RELOCATION
1: A GREEN CORRIDOR LINKING DOWNTOWN DHAKA TO RIVER HAZARRIBAGH: INDUSTRIAL PARK WETLAND POND
SEWAGE DISCHARGE
2: A CLOSED-LOOP INDUSTRY CLUSTER SAVAR SOUTH: GREEN TANNERY
PLANTATION / OPEN SPACE
RIPARIAN HABITAT 3: A REVIVED WATERSHED DHALESHWARI-BURIGANGA
SHELLFISHERY
EFFLUENCE WETLAND
Migrating density and industrial development. Creating for settlement, closed cycle industry and ecology for new site and remediation, riparian productive ecology and green linkage for old site. Water is essential factor in the process.
PRODUCTIVE RIVERFRONT