WASTE WATER TREATMENT – NEW APPROACHES FOR CENTRALIZED AND DECENTRALIZED SOLUTIONS

WASTE WATER TREATMENT –
NEW APPROACHES FOR CENTRALIZED
AND DECENTRALIZED SOLUTIONS
International Conference on “Integrated Resource Management in Asian cities:
the urban Nexus” Visions, best practice, experience sharing
Bangkok, 24.-26. June 2013
Dr.-Ing. Martin Wett
Süddeutsche Abwasserreinigungs-Ingenieur GmbH
www.sag-ingenieure.de (englisch)
[email protected]
Abwasserreinigungs-Ingenieur-GmbH Sachsen
www.sag-sachsen.de
[email protected]
 sewers  waste water treatment  sludge treatment  energy
GERMANY Ulm  Heidenrod  Karlsruhe  Schramberg  Wiesbaden Würzburg  Dresden  Hamburg
AUSTRIA Graz
SAG – 100 years of success
Süddeutsche Abwasserreinigungs-Ingenieur GmbH
Consultant Engineers
Company:
Founded 1911
ca. 95 employee
Main office:
Ulm/Donau
(next to Stuttgart)
Subsidiarys:
Competence:
CEO (Ulm):
CEO (Dresden):
Schramberg
Karlsruhe
Troisdorf
Wiesbaden
Hamburg
Würzburg
Dresden (eigenständige GmbH)
Gleisdorf
Consultants for environmental projects
for local authorities and industry
Dipl.-Ing. Wolfgang Benz
Dr.-Ing. Martin Wett
SAG – 100 years of success
GÜTENBACH 2.400 PE
KA Baden-Baden
EW 200.000
BADEN-BADEN 200.000 PE
KA Heilbronn,
EW 115.000
SINDELFINGEN
115.000 PE
WALDMOHR 10.000 PE
LIPPACH 45.000 PE
KA Neuburg,
65.0000 EW
NEUBURG 65.000 PE
SINDELFINGEN
260.000 PE
KA Graz, Österreich
EW 500.000
GRAZ 500.000 PE
FRANKFURT 580.000 PE
KA Ruhleben, Berliner Wasserbetriebe
1.600.000 EW
BERLIN 1.800.000 PE
SAG – 100 years of success
Global water issue‘s
1. Why Do We Need To Change From Business As
Usual?
•
global water issue
•
need of paradigm shift in our water business
•
appropriated process technologies
2. What Are The Decentralized Solutions
For Grey And Black Water treatment ?
Global water issue‘s
Consequence  growing waterscarcecy
Nature Can’t Satisfy Our Growing Demands
Challenge No.I
 More and more people concentrate in small and urban areas
more people = more consumption of resources
 There comes a point when nature cannot meet the demands for water
Infrustructure can‘t cope
Challenge No.II
 Existing centralized infrastructure
o
must work harder as population densities increase
o
o
tends to be old a fragile
are focused on centralised solutions
 Upgrading existing centralized infrastructure is
o
o
expensive and costs twice: in + out
disruptive in the busiest part of town
 Central infrastructure makes water reuse complex and expensive
Infrustructure can‘t cope
Challenge No. III
 Many cities are located in seismically active regions
 Conventional infrastructure,
in particular gravity sewer,
are relatively fragile in seismic events
and …..
 … drainage is often the weak link
in re-establishing normal operations after an earthquake
…..
the recovery takes longer time,
which leads to intolerable hygienic conditions
after natural disasters like earthquakes.
City of the future – conceptual approach
Growing ressource demand
Wastewater ....

.... has a value

.... should be treated and reused

.... is a most dependable source
of water, nutrients, bio-solids
and energy
recommended solution:
close loops & think in decentralized concepts
City of the future – conceptual approach
Waste water as a significant source of ...
specific volume
Grauwasser
grey
water
yellow water
≈ 500 l/(E·a)
25.000-100.000
25.000
100.000
faeces
≈ 50 l/(E·a)
wwtp 100.000 PE
theoretical nutrient
recovery potential
l/(E·a)
l/(PE·a)
N-itrogen
P-hosphorus
P-otassium
COD-
≈ 14 g/(E·d)
≈ 3%
≈ 87 %
≈ 10 %
511 t/a
≈ 2 g/(E·d)
≈ 10 %
≈ 50 %
≈ 40 %
73 t/a
≈ 5 g/(E·d)
≈ 34 %
≈ 54 %
≈ 12 %
182 t/a
≈ 85 g/(E·d)
≈ 41 %
≈ 12 %
≈ 47 %
0,5-1,2 *106
m³ biogas/a
Pathogenic germs
++
+
+++++++
micropollutants
+
+++++++
++
treated
watercircle
Soure: Otterpohl 2000, adapted and completed)
use for fertilizer
anaerobic digestion / composting
food cycle/sustainable energy generation
= CHP with
140-320 kWel.
installed
= output CHP equal to
current consumption
off 500 - 800german
two person
households
City of the future – conceptual approach
Reuse of wastewater as our most dependable source of water,
nutrients, bio-solids and energy
Greywater
Runoff
Water
Yellowwater
Brownwater
Urine
Excrements
and Washings
Precipitation
Mechanical
Treatment
Biological
Treatment
Filtration
Anaerobic
Treatment
Hygenisation
Adsorption
From shower,
bathtub,
washbasin,
dishwascher and
washing
maschine
Rainwater,
Snowmelt
Stripping
Absorption
Fertilization
Recovery of
Energy
Production of
Humus
Service Water for
Toilet Flushing,
Irrigation
Groundwater
Recharge
Source: huber, adapted 2013
City of the future – conceptual approach
Rainwater
Food & goods brought in
LESS Energy brought in
LESS solid waste removed
LESS wastewater removed
LESS Water brought in
Reclaimed wastewater and rainwater for amenity flow and groundwater recharge
Onsite or nearby wastewater treatment:
• reduced overall demand
• increased system resilience
Onsite or nearby ressource recovery:
• reduced load on local ressource supplies
© Prof. Dr. Bischof, adapted
water reuse solutions
_________________
choice of process technology
Water Reuse Solutions – process technology
Do you really need sewers?
No, you don´t.
Save or reduce the expense!
Treat your effluent on site!
Use this source of water and nutrients!
Appropriated process approach ?
Decentralized Sanitation and Reuse
is your better option.
On-Site Solutions produce top-quality
effluents,
where you can reuse them for ...
Water Reuse Solutions – process technology
Utilisation opportunities ?
Water Reuse Solutions – process technology
Innovative process technology of the choice ?

effect
Environmental
impact
effort
note
UV
o
o
o
o
Membranefiltration UF
+
+
-
+
O3
o
-
o
-
Cl
+
-
o
o
Partial Flow
Division
o
+
o
+
Natural
o/-
+
o
o
Technology
(listing of enhanced customary technology:
applicable for grey and black water)
objective of water reuse technology
 appropriated purification and hygienisation
 UV, membrane filtration, partial flow divison and
natural process would be appropriated
 in dependence on use
 with respect to the predictability of hygienisation
membrane filtration is the best processes of choice
 In some cases, other technologies with lower
predictability of the hygienisation and
purification performance could be
acceptable/wanted  e.g. agricultural use
DECISSION PROCESS
– TECHNOLOGY CHOICE
Question I:
Do I really need C,N and P removal ?
Question II:
Do I really need hygienisation
and if yes, which level of hygiene ?
membrane bioreactor (MBR)
Water Reuse Solutions – process technology
Membrane filtration process as:
Membrane bioreactor (MBR) or Tertiary filtration process (TFP)

Both systems use the same membrane material and working principle:
Classification: Ultrafiltration (UF); Pore size nominal: 150 kDa, 38 nm
 Submerged systems with cross flow aeration or Dead-End-Pressurepipe
installation
 Membrane surface cleaning with scouring air (coarse bubbles)

Operation at moderate pressure differences up to 500 mbar underpressure
 Separation of all particles, bacteria and virtually all germs
(separation size < 0.1 µm [0.1 microns]) = 1/1000 the size of human
hair  effluent: according EU bathing water quality

membrane plate
function of an
ultrafiltration membrane
waste water
waste water
clean water
membrane module
Decentralised Water Reuse
Solutions
_________________
use of grey water
as service water
Water Reuse Solutions – grey water
Reuse of grey water as service water (toilet flushing, irrigation)
grey water =
water from :
showers,
bathub,
washbasin,
dishwascher ,
washing maschine
1
2
Technology
choice: MBR
3
MBR+
UV-stage
1
2
3
Water Reuse Solutions – grey water
Reuse of grey water as service water (toilet flushing, irrigation)
3
0
1
2
Water Reuse Solutions – grey water
Reuse of grey water as
service water
(toilet flushing, irrigation)
Allow any system to be made more visually
appealing !
Water Reuse Solutions – grey water
Expected Typical Installations
Hotels & Resorts
Offices
Shopping Malls
Hospitals
Apartment
Blocks
Golf Courses & Parks
Universities & Schools
Decentralised Water Reuse
Solutions
_________________
use of black water
as service water
Water Reuse Solutions – black water
Small Size Solutions system for one houshold up to approx 500 PE
 Onsite sewage treatment systems and decentralized
(i.e. cluster systems) wastewater treatment plants
 Creation of recycled water for internal and irrigation reuse.
 Complete systems including tanks and membrane and control
unit available or for retrofitting only membrane and control unit
prefabricated septic tank solution
bigger sized concret tank solution
Water Reuse Solutions – black water
Small Size Solutions systems from 200 – 2,500 PE (25 - 750 m³/d)
 Modular design concept allows system to be easily configured to
suit each projects requirements.
 Allows tighter nutrient reduction and in consequence higer
effluent quality e.g. for water reuse
WWTP housed in a Central Technical Room
WWTP as ground basin concret tank solution
WWTP as mobile prefabricated container solution
Water Reuse Solutions – black water
Middlesized Solutions systems from 1,000 – 40,000 PE (200 – 10,000 m³/d)
 System with lower energy consumption
thanks to e.g. unique air scouring design
(up to 75% lower than competitors
systems)
Mechanical Preatreatment as container solution
System A
System B
Difference
Qav = 140 m³/h
0.32 kWh/m³
0.45 kWh/m³
40%
Qmax = 220 m³/h
0.23 kWh/m³
0.40 kWh/m³
75%
Qmin = 30 m³/h
0.31 kWh/m³
0.43 kWh/m³
38%
Filtration chamber for Vacuum Rotation Membrane System
Decentralised Water Reuse
Solutions
_________________
black water
for rural areas and specific applications
Water Reuse Solutions – black water
Do you need water and nutrients
for your crops ?
Wastewater is your most reliable
source of water and nutrients. You
can close the loop.
Pond Solutions
Adapted and affordable Pond Solutions
improves the efficiency and capacity of
your wastewater lagoons. Reuse their
nutrient-rich effluents for irrigation and
watch your crops grow fast!
Water Reuse Solutions – black water with mbr
Reuse of black water for irrigation and use of water nutrients as fertilizer
Pond Solution
Micro Screening
1
+ Lagoon/Pond
2
+ Membrane Unit
3
= Hygienic Service Water
for Irrigation
Partial biological waste
water (ww) treatment
 remaining nutrients
from ww are available
as fertilizer in
agricultural systems
Water Reuse Solutions – black water with mbr
Reuse of black water for irrigation and use of water nutrients as fertilizer
Application in the Middle East
Micro-Screens at Lagoons for mechanical wwtreatment in the Middle East
Drip Irrigation with High-Quality Lagoon Effluent
in the Middle East
Water Reuse Solutions – black water without mbr
Best water quality on a tight budget !
You have a challenge: You must
improve your water quality, but your
funds are limited.
SAG Solutions
Our affordable and modular
Solutions start with most cost
effective mechanical/chemical
wastewater treatment.
Then, step by step, as your funds
permit, we further improve your
water quality.
Water Reuse Solutions – black water without mbr
Examplified process technology realised within the step by step approach
Tight budget solution
Fine Screening
+ Flocculation
+ Micro Screening
+ Trickling Filter
+ Mirco Straining
= Step by Step Upgrading
of the Wastewater
Treatment
One of many
alternative
process
strategy to
MBR !
Decentralised Water Reuse
Solutions
_________________
black / grey water
innovative overal approaches
Water Reuse Solution – deus21 approach
System approach DEUS 21": DEcentralized Urban Infrastructure System
Source: Fraunhofer IGB
Water Reuse Solution – deus21 approach
System approach
equilization
tanc
Source: Fraunhofer IGB
settling
tank
biogas
anaerobic
fermenter
(no
heating)
equlisation
tanc
anaerobic
fermenter
(37°C)
wastewater
from
households
operation
building
effluent for
irrigation
or nutrient
recovery
excess
sludge for
disposal
membrane
membrane
excess
sludge
vacuum
station
anaerobic
fermenter
membrane
Water Reuse Solution – deus21 approach
System approach : separation of greywater, urine und faeces
Betriebsgebäude
Wohngebäude
9 Vakuum- 1 Schwerkrafttrenntoiletten trenntoilette
10 Schwerkrafttrenntoiletten
Küche
Membranbioreaktor
Urine
(by
gravity)
Faeces
(by
vacuum)
Ecosan approach
Küche
Vakuumanlage
Urintanks
Dünger
Biogas
gereinigtes
Wasser
Biogasanlage
Dünger
Bioabfall
Bodenfilter
Grobfilter
Kompostierung
Dünger
Fäkalien
Grauwasser
Zweikammergrube
gravity no-mix-toilet
vacuum no-mix-toilet
6 – 10 l water/flush
0,7 – 2 l water/flush
Urin
bewachsener
Bodenfilter
gereinigtes Wasser
demonstration project
Source: BWB financed by LIFEU
Decentralised Water Reuse
Solutions
_________________
YOUR decission process
City of the future – decission process
 which water ressources
you have
(wastewater, rainwater,
surface water) ?
 which water
consumers you have
(households/industrie/
agricultural) ?
 which water cleaning
technology is appropriated
 what is your
financial budget ?
 what are your
socio-political aims
and conditions ?
 which options are realistic
to handle with your water
(how can you close loops ?)
 which framework defines the
urban planning (e.g. population
district growth, existing
 which of your dutys
infrastrucutre))
can / would you do decentralised
(identify optimized sized subunits !)
 You need a long term overal water strategy and
the goodwill to turn around your strategy, to realise a paradigmen shift
City of the future – decission process – factor costs
 investment + operational
costs  annual costs
costs per
m³ sewage
statistic average value,
(all wwtp, germany, 2007
size of wwtp in polulation equivalent
 Important criteria whithin your decission making process:
EFFICIENT USE OF YOUR MONETARY RESSOURCES !
Source: löffler/siegel 2008, adapted
Centralized Water Reuse
Solutions
_________________
technology trend
Global water issue‘s –centralised approach
CURRENT STATUS CENTRALIZED WASTE
WATER TREATMENT PLANTS - world-wide
wwtp – C+N+P removal
Influent
Qzu
primary
settlement tanc
coarse
activated
sludge tanc
secondary
settlement tanc
effluent
to river
primary
sludge
high energy demand
(i.p. electricity demand for the
aerobic nitrogen-removal)
need of big reactor volume
waste-sludge
no contemporary sludge
disposal concept
excess-sludge
wwtp – waste-sludge-conversion into biogas
biogas
dewatering
digester
process
water
waste sludge
disposal
(incineration,
agricultural,
melioration)
less conversion of the organic
fraction of the waste sludge in
digesters  no own electricity
production
less usage of waste heat (chp)
no process technology for
water reuse
heat
...... no nutrient recovery
wwtp – biogas conversion
insufficient water purification as
preperation for water reuse
biogasstorage
CHP
heat
electricity
high chemical demand
(i.p. polymer for dewatering and
carbon-Source for process water
treatment)
Global water issue‘s –centralised approach
Optimized biological waste water
purification technology:
wwtp – C+N+P removal
Influent
Qzu
primary
settlement tanc
coarse
DEMON
activated
sludge tanc
secondary
settlement tanc
effluent
to river
primary
sludge
waste-sludge
excess-sludge
wwtp – waste-sludge-conversion into biogas
biogas
dewatering
digester
process
water
 Goal: crucial step to achieve
„Energy Self-Sufficient WWTP “
waste sludge
disposal
(incineration,
agricultural,
melioration)
heat
wwtp – biogas conversion
biogasstorage
CHP
heat
electricity
DEMON-process
 Patented system (Cyklar Stulz GmbH) using
specialized bacteria
 side stream (process water treatment) /
main stream treatment:
energy saving approx. 60%
 no external carbon source required
 minimized excess sludge production
Global water issue‘s –centralised approach
Optimized biogas yield :
wwtp – C+N+P removal
Influent
Qzu
primary
settlement tanc
coarse
DEMON
activated
sludge tanc
secondary
settlement tanc
effluent
to river
primary
sludge
waste-sludge
Excess-Sludge Desintegration (LYSO-GEST)
 Ensure reduced retention time for digestion
(approx. 15 days)
 Reduced need of digester volume or ...
 ... further increase in gas production (app.
10%)
 improved phosphate and nitrogen recovery
excess-sludge
wwtp – waste-sludge-conversion into biogas
biogas
dewatering
digester
Co-Digestion
 Adding co-substrates to the digester
 enhanced biogas yield  enhanced
production of electricity / heat
waste sludge
disposal
 Goal: „Energy Self-Sufficient WWTP“
process
water
(incineration,
agricultural,
melioration)
LYSO GEST
co-substrates
(e.g. leftover foodstuff)
heat
wwtp – biogas conversion
biogasstorage
CHP
heat
electricity
Global water issue‘s –centralised approach
Optimized nutrient recovery technology:
wwtp – C+N+P removal
primary
settlement tanc
coarse
Influent
Qzu
DEMON
activated
sludge tanc
secondary
settlement tanc
effluent
to river
primary
sludge
waste-sludge
excess-sludge
wwtp – waste-sludge-conversion into biogas
biogas
MAP
dewatering
digester
LYSO-PHOS - phosphate recovery in
combination with e.s. desintegration
 phosphate recovery from the hydrolyzed
sludge beforde digestion (MAP)
 significant improvment of the mechanical
sludge dewatering
 significant reduction of sludge quantity for
disposal
MAP
 phosphate and nitrogen recovery
waste sludge
(partial flow: centrate from sludge
disposal
dewatering)
MAP
process
water
LYSO GEST
co-substrates
(e.g. leftover foodstuff)
map = magnesia-ammonia-phosphate
heat
wwtp – biogas conversion
biogasstorage
CHP
heat
electricity
(incineration,
agricultural,
melioration)
 Goal: „Enhanced and optimized nutrient
recovery“
Global water issue‘s –centralised approach
Optimized sludge disposal technology:
wwtp – C+N+P removal
Influent
Qzu
primary
settlement tanc
coarse
DEMON
activated
sludge tanc
secondary
settlement tanc
effluent
to river
primary
sludge
waste-sludge
 Goal: „reduction of sludge quantity as
onsite solution“
excess-sludge
wwtp – waste-sludge-conversion into biogas
biogas
dewatering
digester
MAP
PYREG
process
water
LYSO GEST
MAP
co-substrates
(e.g. leftover foodstuff)
heat
wwtp – biogas conversion
biogasstorage
CHP
heat
electricity
PYREG – SLUDGE MINERALIZATION
 sludge pyrolisation into coal
 significant reduction of sludge quantity for
disposal
 new disposal way beside agricultural and
incineration (off-side-solution)
heat
sanitized
sludge ash
magnesiaammoniaphosphate
disposal
Global water issue‘s –centralised approach
Optimized off-heat conversion technology:
wwtp – C+N+P removal
Influent
Qzu
primary
settlement tanc
coarse
DEMON
activated
sludge tanc
secondary
settlement tanc
effluent
to river
 organic medium which evaporates already
below 80°C drives a turbine coupled with a
generator
 electrical efficiency 12-15 %
 significant increase of your electricity
production
primary
sludge
waste-sludge
CONVERTION OFF-HEAT FROM CHP INTO
ELECTRICITY BY ORC
(ORC = Organic Rankine Cycle)
excess-sludge
wwtp – waste-sludge-conversion into biogas
 Goal: „Energy Self-Sufficient WWTP“
biogas
heat
dewatering
digester
MAP
sanitized
sludge ash
PYREG
process
water
LYSO GEST
magnesiaammoniaphosphate
MAP
co-substrates
(e.g. leftover foodstuff)
heat
wwtp – biogas conversion
offside
biogas use:
cars /
biogasnet
ORC
biogasstorage
CHP
electricity
heat
electricity
disposal
Global water issue‘s –centralised approach
wwtp – C+N+P removal
Influent
Qzu
primary
settlement tanc
coarse
DEMON
tertiary membran filtration
activated
sludge tanc
secondary
settlement tanc
Water reuse in
central irrigation network
primary
sludge
or in households
waste-sludge
excess-sludge
wwtp – waste-sludge-conversion into biogas
biogas
heat
dewatering
digester
MAP
sanitized
sludge ash
PYREG
process
water
LYSO GEST
magnesiaammoniaphosphate
MAP
co-substrates
(e.g. leftover foodstuff)
heat
wwtp – biogas conversion
offside
biogas use:
cars /
biogasnet
ORC
biogasstorage
CHP
disposal
electricity
heat
electricity
Water reuse technology:
Tertiary membrane filtration stage
 Effluent in bathing water quality
 Alternative to tertiary filtration:
 submerged membrane filtration (MBR)
 microsieves + uv + depot-chlorination
 ozon + chlorination
 Goal: „water reuse“
Global water issue‘s –centralised approach
Contemporary design of wwtp with the aid of 3D computer-aided-design-software
Global water issue‘s –centralised approach
CONCLUSION
 There is not only one process optimized and energy selfsufficient WWTP design
 The intelligent choice and combination of different processes and
techniques can contribute to convert a WWTP at least to an
energy-efficient WWTP and ...
 ... to a reduction of operating costs / acceptable investment
costs
 Sludge treatment optimization plays a mayor role and
frequently also reduces sludge disposal costs
 The sewage sludge serves as energy source and as fertilizer
source (phosphate, nitrogen) and ....
 ... waste water as a water ressource
THANK YOU FOR YOUR INTEREST !
june 2013
Heat recovery from wastewater
Lets start using them.
Heat recovery from wastewater
3
3
1
2
4
5
(1) Sewer
(2) Manhole structure with a fully automatic Huber
Screen with return of screenings to the sewer,
wastewater pump
(3) HUBER RoWin heat exchanger for wastewater
(4) Heat pump
(5) Energy storage
Heat recovery from wastewater
Office Tower Switzerland
The system yields 480kW of heating
& 840kW of cooling and operates with
a Coefficient of Performance (COP)
of approximately 5-6.
Heat recovery from wastewater
~100 Apartments - Germany
Heat recovery from wastewater
(consumer)
(warm water)
(heating)
(central heating)
boiler
(energy
saver) (heat pump)
(CHP)
(waste water treatment plant)
(local heating network to 20°C)
(waste water sewer 12°C to 20°C)
(heat exchanger)
Source: Uhrig
Heat recovery from wastewater
Hilfsenergie [kWh/a]
Gas [kWh/a]
Nutzenergie [kWh/a]
Abwasserwärme [kWh/a]
600000
23,000
Energy Input [kWh/a]
500000
53,500
96,300
400000
300000
535,000
200000
385,200
72 % Umweltwärme
aus Abwasser
100000
0
Wastewater Heat Recovery
Conventional
Heat recovery from wastewater
140
CO2 -Emissionen [t/a]
120
100
80
140
60
40
20
14
0
Wastewater Heat Recovery
Conventional
Nature Can’t Satisfy Our Growing Demands
Water availability, consumption and treatment
City
Water
consumption
litre/capita/
day
Wastewater
treatment
(%)
Azerbaijan
40
45
Lagos
45
no data
Karachi
132
10
Jakarta
162
16
Lima
108
4
Montevideo
173
34
New York
448
100
United Nations Human Settlement Programme / UN-Habitat, The
Challenge of Slums, Global Report on Human Settlements, p 277, 2003
Water Reuse Solutions – SafeDrink Solution
Water Pollution kills! Do you care?
Thousands of children are killed every
day by water pollution. It could be your
child and future.
SafeDrink Solution
Our adapted and affordable SafeDrink
Solution produces clean drinking water
from polluted surface water. Our
technology is simple, robust, and easy
to operate and maintain. It helps to
save lifes.
Water Reuse Solutions – SafeDrink Solution
Simple and Affordable Production of Potable Water from Surface Water
SafeDrink Solution:
Screening
+ Flocculation
1
4
2
+ Sedimentation
+ Sand Filtration
3
+ Disinfection
4
5
3
2
= Simple Solution + Easy
Operation and
Maintainance
1
5
Water Reuse Solutions – SafeDrink Solution
Simple and Affordable Production of Potable Water from Surface Water
Application in Sudan
Sandfilter in Sudan
Clean potable water should not remain a
luxury
City of the future – conceptual approach
Typical Emergency
Provisions in Modern
Buildings
 Structures: Designed to
withstand seismic events
 Electricity: Standby
generator or multiple
points of supply.
 Water: Storage tanks
(8 – 24 hours supply)
 Wastewater: Typically
nothing
Water Reuse Solutions – septage treatment
What can you do with septic
sludge?
Soils lose humus through erosion.
Septic sludge is a source of humus.
Why don´t you use it ?
SeptageTreat Solutions
Our adapted and sustainable
SeptageTreat Solution produces fertile
bio-solids from your odorous septic
sludge. Apply the product on your land
and watch your crops grow fast.
Water Reuse Solutions – septage treatment
Septic Sludge Treatment for Reuse
SeptageTreat Solutions
Screening
1
+ Dewatering
2
+ MBR for Process Water
with VRM
3
= Service Water for Irrigation
1
2
3
Water Reuse Solutions – septage treatment
Application in Kuching, Malaysia
Screen and Grit Trap in Kuching, Malaysia
Presses in Kuching, Malaysia