How to do it -1 ?Direct separator system
Sand separator + Oil separator + Sample shaft
Wavin-Labko
By-pass system
Why
Where
How
Common thought
Why to purify rain water ?
Common thought: ”rain water – clear water”
Yes but > total amount of hydrocarbon 20-37 mg/l
EN -standards
Stormwater treatment
What does customer want to have ?
Purified water – prevent the nature (ISO certificates, authorities demands)
Reasonable costs
What do we want ?
New sites > NTO, Revenue
Properly functioning system
Two ways
Direct system
Bypass system
How to do it -1 ?
Direct separator system
Sand separator + Oil separator + Sample shaft
Direct system
Dimensioning according to area m2
Treatment percentage 100%
Max 10000 m2
Direct system
Advantages:
Effective purification – 100%
Disadvantages:
Heavy downpour does not occur often >
Over-capacity of separator most of time
Multiple systems when large areas > costs for end customer
How to do it -2 ?
By pass –system
Flow regulator well + Sand separator + Oil separator + Sample shaft
Bypass system
Advantages:
Max area ? m2
One system to purchase, install and maintain > reduction in costs for end user
Protects oil separator’s functions
Disadvantages:
Treatment percentage less than 100% annual rain
Deep installation (big systems)
Core of bypass system – flow regulator
Flow regulator adjusts and restricts
Why to recommend Bypass system?
New sites
New customers
Experienced techical knowledge
Experiences in Finland
How did it start ?
What did we suppose ?
Facts and figures
How did it start ?
Worst-case scenario for sales people…
”I don’t have that product!”
Large areas
Demand for stormwater treatment in large areas
Parking lots
Industrial yards
Storage areas
Terminals
R & D
Experience and common practise elsewhere
Introduction
Launching Bypass system in 2002
Seminars and training for consults, designers, authorities
First system delivered September 2002
Experiences in Finland
How did it start ?
Easily and fast
Good feedback from consults, contractors and authorities
What did we suppose ?
3..4 volume systems > great variation in system sizes
Facts and figures
Nice increase in both NTO and revenue
Comments