Flick sofia 26 11 2013 v1

Sofia 26.11.2013 BCC and BWA Conference

Dipl.-Ing. K.-H. Flick; Association of German Vitrified Clay Pipe Industry (FVST)

Challenges in the choice of materials for inlet collectors

Bau.-Ass. Dipl.-Ing. Karl-Heinz FlickAssociation of German Vitrified Clay Pipe Industry, Frechen (D)

Picavet, Kelly

Darf man dies nicht einfach weglassen?



The four objectives of drains and sewer systems in accordance with EN 752:

o Public health and safety

o Occupational health and safety

o Environmental protection

o Sustainable development



Principles of wastewater engineering

o Sewer systems provide a service to the society

o The proper disposal of wastewater ensures public health and hygiene

o With sewer systems overflow in residential areas is avoided and the

environment is protected

o Main sewer systems cover for the functions:

collection / transport / treatment / discharge



Combined or mixed sewer system

Source: BWB Berlin



Steps towards implementation

o Fix objectives

o Fix functional requirements

o Fix strategic and policy activities related to planning, design,

construction, operation, maintenance and rehabilitation



EU legal implementations

water law

environmental law

technical standards



What inputs are required for planning and design?

What requirements have to demonstrated?

How to calculate the pipe’s resistance to stress?

What are the risks?

How to guarantee success?

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And many other questions in addition!



Hydraulic designi.e. transport of sediment and performance

Wastewater propertiesi.e. chemical, biological, thermal and mechanical stresses

Mechanical and dynamic loads i.e. during construction and operation

Construction structural design for pipe / soil system

Operationmaintenance and rehabilitation

Safetypreserve for future stresses

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Dipl.-Ing. K.-H. Flick; Association of German Vitrified Clay Pipe Industry (FVST)9

Salient features of sewer system networks

Operator View User / Client View

Operational reliability High comfort

Underground installation No problems

Once-only installation Cost-efficient

Immutable implementation Secure for the future

Low operational cost Low maintenance and repair costs

Long service lifetime High security at low cost

High functionality High reliability



EN 752 Drain and sewer systems outside buildings



To build and operate sewer system networks in a reliable and secure way – Individual requirements and praxis



Pipe systems from the inside



Sewer system networks must be planned, build and operated

under optimal conditions for environment, society and economy.

Objectives

Use of renewable energy resources

Minimal energy consumption for operation

No impact on the environment

Source EN 752

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To build and operate sewer system networks in a reliable and secure way – Sustainable Development



„Drains, sewers and other components should be

designed, constructed, maintained and operated

to ensure structural integrity over the design life.”

Source EN 752

To build and operate sewer system networks in a reliable and secure way – Sustainable Development

It is not sufficient to properly construct a sewer system,

it also has to be built in a way to ensure long operational life.

H.R. Steiner, Zürich (CH)


Dipl.-Ing. K.-H. Flick; Association of German Vitrified Clay Pipe Industry (FVST)13-04-23 Steinzeug | Keramo

Paalsteenstraat 36 3500 Hasselt

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Particles

pH-10°C 70°C

Parameters that will determine the longevity

Completely tightChemical and thermalresistance

High mechanical strength

Good hydraulic performance

Easy cleaning possibilities

Environment-friendly

Abrasion resistant


Dipl.-Ing. K.-H. Flick; Association of German Vitrified Clay Pipe Industry (FVST)Steinzeug-Keramo

Abrasionresistance

Longevity

Impermeability

Mechanical resistance

Hydraulicsmoothness

Impact resistance

Thermal stability

Corrosionresistance

vitrified clay

PETZOW, G.; SCHUBERT, H.: Materialeigenschaften im Spiegel des Kanalrohreinsatzes, Korrespondenz Abwasser, (39) 1992, Heft 5, Seite 688-706

PVC

concrete

ductile iron

13-04-23 16

Decision diagram



Evaluation-matrix of pipe materials and products based on technical properties

Criteria Hydraulic performance

Chemical Resistance

Structural design and conditions

Construction and conditions

Tight-ness

Pro-gram

Environmental aspects

Reha-bili-tation

Sum

Weighting points 5 20 15 5 20 15 10 10 100

Concrete

Vitrified Clay (VC)

Ductil Iron

PVC

PP

PE

GRP

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crushing strength32 – 140 kN/m

bending tensile strength 12 – 25 N/mm2

compressive strength100 N/mm2

elasticity module50 000 N/mm2

hardness (Mohs)~ 7 resistance to

high pressure jetting 280 bar

wall roughness0,02 mm

abrasion resistancemax 0,25 mm

Main properties of vitrified clay pipes according EN 295



COST-EFFICIENT

Long service lifetime

Low maintenance costs

Economical safeguarding of

fixed assets

ECO-FRIENDLY

Outstanding technical, chemical and physical properties:

- high strength, density and robustness

- high resistance to wear, tear and corrosion

100% recyclable

INTERGENERATIONAL EQUITY

No permanent financial burden

through rehabilitation, repair, or

reconstruction

Sparing use of resources

Service life span > 100 years

Sustainability and sewer systems



Vitrified clay pipes and the raw material

30-40% secondary raw materials

60-70% Clay



60-70% Ton 30-40% Sekundärrohstoffe

Vitrified clay pipes and the environmental life cycle


Dipl.-Ing. K.-H. Flick; Association of German Vitrified Clay Pipe Industry (FVST)Quelle: IKT Gelsenkirchen, Prof. Dr.-Ing. B. Bosseler

Competition in the underground



• Häufigere und größere Starkregenereignisse

Challenge Climate Change


Dipl.-Ing. K.-H. Flick; Association of German Vitrified Clay Pipe Industry (FVST)31

Conclusions for sewer systems

• Key function in the water cycle

• Essential part of municipal infrastructure

• Intergenerational engagement

• Long service life of over 100 years

• Challenge: Life Cycle Assessment vs. short term

invest budget

Flick sofia 26 11 2013 v1

Business

Transcript of Flick sofia 26 11 2013 v1