jochen scheerer
DESCRIPTION
As coberturas e fachadas mediterrânicas, vivas e produtivas promovem o bem estar e a qualidade de vida das populações e contribuem decisivamente para o aumento da resiliência das cidades. Por esta razão é essencial não apenas o conhecimento das soluções existentes que melhor se adaptam ao nosso clima, como ainda o desenvolvimento das competências técnicas essenciais para a boa implementação daquelas soluções. O enfoque deste Workshop está na demonstração da integração da dimensão verde nas cidades e das oportunidades de intervenção conducentes à melhoria do desempenho energético dos edifícios, à redução do “efeito ilha de calor”, à boa gestão das águas pluviais, à reciclagem de águas cinzentas, à melhoria da qualidade do ar, ao aumento da biodiversidade e à segurança alimentar das populações urbanas, sempre assentando nas melhores e mais adequadas tecnologias disponíveis.TRANSCRIPT
Recycling grey water in green façades
October 20 th, 2011 – LISBON
Dr. Jochen Scheerer
COBERTURAS E FACHADAS MEDITERRANICAS VIVAS E PRODUCTIVAS II
Recycling grey water in green façades
Company Presentation
� ASEPMA is an engineering company specialized in water management, treatment andreuse of non potable water.
� Since its beginning in 2003, ASEPMA has offered its services to a great number of clientscoming from the field of public administrations all kind of industries as well as privatecustomers. Those services include the whole range of tasks related to the management ofwater cycle beginning with consultancy, project design, installation and maintenance andcontrol of treatment facilities for non potable water.
� Besides standard compact treatments, ASEPMA offers alternative solutions for waste watertreatment using constructed wetlands, both horizontal and vertical. The later based on ainnovative technology patented by ASEPMA.
� Since January 2009, ASEPMA has become a business unit of the ABM Group dedicated toconsultancy, service and technical solutions related to industrial waste water, urban sewage,grey water and rain water management.
What kind of water restrictions exists in the Mediterranean area?
Periodic scarcity
Increasing costs
Legislation
Recycling grey water in green façades
Episodes of drought and advancing of
desertification
Water prices are expected to
continue increasing faster than in the
past.
(Since 2005, water prices in Spain increased 28 % in average)
There is a growing number of legal
requirements on national, regional
and local levels fostering water
saving.
Local requirements
Aim Fostering of water saving measures and sustainable use
of water.
Field of application
�New buildings and constructions.
�Rehabilitation and reforms of existing buildings.
�Public buildings
Rain water Grey water Pool water
Recycling grey water in green façades
Current water management concept
Recycling grey water in green façades
Drinking water
Usage
Waste water
Alternative water management concept
Recycling grey water in green façades
Drinking water
Reclaimed water
Grey Water
Black water
Use Waste water
Treatment and regeneration
Waste water treatment is the sum of different
individual operations which we can distinguish intomechanical, physical and biological operations. The
aim of such treatment is to reduce or eliminate
certain undesirable characteristics of the waste
water.
Recycling grey water in green façades
How works waste water treatment?
Pre- Treatment: Elimination of solids and grease by mechanical, physical and chemicalmeans.
Secondary Treatment: Elimination of organic substances and nutrients by biologicmeans.
Tertiary Treatment: Advanced elimination of nutrients and hygienization by physical,chemical and biological means.
Recycling grey water in green façades
Main steps of waste water treatment
Pre-
Treatment
Secondary
Treatment
Tertiary
Treatment
Main steps of waste water treatment
Pre- Treatment:
�Mechanical sieves
�Grease separators
�Septic tanks
�Decanters, anaerobic digesters
�Physic chemical treatments
•Elimination of solids and grease by physical, chemical and mechanical
means
•Reduction of 20% BOD i 50% Solids
Recycling grey water in green façades
Main steps of waste water treatment
Secondary Treatment:
�Activated sludge
�Percolator
�Total oxidation
�Bio filters and or wetlands
•Elimination of organic substances.
•BOD: <25 mg/L O2
•Solids : <60 mg/L
Recycling grey water in green façades
Main steps of waste water treatment
Tertiary Treatment:
�Adsorption
�Ozone
�Membrane filtration
�Wetlands
•Elimination of nutrients like nitrogen and phosphorous
•Elimination of microorganisms
Recycling grey water in green façades
Recycling grey water in green façades
Classical concept of urban water reuse
Main problem
Distance
Treatment and regeneration of grey water or waste waterclose to the point of reuse.
Concept of IN SITU treatment and reuse
Recycling grey water in green façades
Applications of water which do not require drinking water quality :
�Irrigation of public parks and gardens .
�WC.
�Cleaning of external surfaces .
Bio Treatments: WETLANDS
Recycling grey water in green façades
The use of artificial wetlands in waste water treatment permit to benefitfrom natural processes which eliminate or reduce non desired substancesfrom the water:
�Creation of an active substrate (roots, gravel), which permits the growth and
metabolic activity of microorganisms.
�Reduction of the contamination -up to 90%- thanks to the activity of
microorganisms, which under aerobic conditions metabolize organic
contaminants into carbon dioxide and other nutrients for the plants.
�Very efficient elimination of carbon, nitrogen ad phosphorous.
�Possibility to eliminate even heavy metals by using the processes of
selective uptake and accumulation by plants (known as phytoremediation)
Recycling grey water in green façades
Bio Treatments : WETLANDS
ADVANTAGES
- IN SITU treatment.
- High efficient treatment.
- Energy consumption is verylow or nil.
- Increase of biodiversity.
- Environmental Improvementby CO2 fixing, and oxygenproduction)
- Positive landscaping.
DISADVANTATGES
- Space requirements.
Recycling grey water in green façades
Bio Treatments : WETLANDS
Difficult to use in urban
areas!
Recycling grey water in green façades
Bio Treatments : WETLANDS
In large cities there is no space
for a horizontal wetland !
But... Why it can not be done
vertically?
BABYLON
Bio Treatment: The Babylon® System
Recycling grey water in green façades
A green façade where grey water
is circulated vertically usingmainly gravity force.
Obtaining treated and regenerated grey
water using approved wetland technology.
However vertically!
Bio Treatment: The Babylon® System
Recycling grey water in green façades
All advantages known from wetlandtreatments.
Advantages:
In addition:
� A solution for the space problem.
�Improvement of thermo isolation of the
buildings due to known benefits of
ventilated façades and additionally due to
evaporation from the plants.
�Acoustic isolation.
�Attractive element in architecture with
additional function as IN SITU water
treatment .
�The hanging gardens of
Babylonia where constructed by Nebuchadnezzar 2nd around 600
b.C.
�Considered one of the 7 miraclesof the world, they were about 25
meters high.
�According to the descriptions of Ctesias, 400 b.C. there where
already plants of the Phragmites
species used in these installations.
Recycling grey water in green façades
Bio Treatment: The Babylon® System
Little history on green façades
Pre Treatment
Bio Treatment: The Babylon® System
Recycling grey water in green façades
Elimination of solids before entering the
BABYLON® façade.
Water entry at the upper
part of the BABYLON®
façade
Recycling grey water in green façades
Bio Treatment: The Babylon® System
Outflow at the lower part of the
BABYLON® façade
The Babylon® System for grey water treatment
Recycling grey water in green façades
Separate piping for grey water
Buffer tank for grey water
Lifting Pump
Treatment
Storage tank
Supply for usage
Grey water
Treated grey water Babylon*
Quality criteria according to legal
requirements Spanish Legislation reference
Solids in suspension
27 mg/L 1.0 mg/L 10 mg/L
RD1620/2007, which establishes quality requirements for reclaimed waste waters for different applications. Quality 1.1: Residential.
Turbidity 45 NTU 0.84 NTU 2 NTU RD1620/2007 Quality 1.1: Residential
COD 210 mg/L 59 mg/L 160 mg/LRoyal Decree 849/1986 which establishes the quality requirements for spill of treated waste water
BOD - 5,0 mg/L 40 mg/L Royal Decree 849/1986; Table III
The Babylon® System for grey water treatment
Recycling grey water in green façades
Pre treatment Secondary Treatment Tertiary Treatment
Recycling grey water in green façades
The Babylon® System as one operation in waste water treatment
Primary
settlement
Total oxidation Babylon® System
Recycling grey water in green façades
Applications of The Babylon® System
Projecte Associació G.A.I.A
Applications of The Babylon® System
Recycling grey water in green façades
�Reuse of treated grey water for WC of 60 parties.
Grey water treatment in buildings.
Applications of The Babylon® System
Recycling grey water in green façades
�Reuse of reclaimed waste water for irrigation purposes (pilot plant).
Tertiary treatment for treated waste water of a camping site.
Babylon® Càmping
Applications of The Babylon® System
Recycling grey water in green façades
� Water reuse and cooling.
Hotel Radison
Grey water treatment at a hotel (Chile).
Recycling grey water in green façades
Tabacalera Tarragona
Applications of The Babylon® System
�Reuse of reclaimed water for sub surface irrigation of a public park.
Tertiary treatment step in an IN SITU treatment and reuse project of a public building.
Recycling grey water in green façades
Applications of The Babylon® System
Tabacalera Tarragona
Thank you for your attention!
COBERTURAS E FACHADAS MEDITERRANICAS VIVAS E PRODUCTIVAS II
Recycling grey water in green façades
October 20 th, 2011 – Lisbon
Dr. Jochen Scheerer