www.constructed-wetlands.com
Blumberg Environmental Planning & Design Co.

Keshi Plaza C-6B
28 Xinxi Rd. Haidian Dist.
Beijing 100085
P.R. China




We are specialized in the following ecotechnologies:

  • constructed wetlands
  • reed bed sludge treatment
  • stormwater treatment wetlands
  • green wetland roofs
  • floating islands
  • natural swimming pools
  • wetland restoration


Landfill leachate treatment


Landfill leachate treatment by constructed wetlands

In the south-east of Hamburg surveyors in 1978 detected that major quantities of contaminated seepage water were leaking from the south-western boundary of a former construction waste dumping site (18 ha), which had been closed down and recultivated. Due to the bad smell it emanated, the seepage also had a negative impact on the local recreational area. In a move to solve this inherited problem, the leaking waters were captured and a constructed wetland system was built using the root zone method. This close-to-nature disposal concept, at the heart of which is a reed bed, was put into practice by the city of Hamburg in 1986. Blumberg engineers were commissioned to supervise the operation of the treatment system.







 
Description of the water treatment procedure


Blumberg Engineers in Germany:

Blumberg Engineers
 
 
 Ingenieurbüro Blumberg


Gänsemarkt 10
D-37120 Bovenden
Germany

www.blumberg-engineers.de »


Since 2003 we realize constructed wetlands with our Chinese partner companies:


www.lnbsd.cn
Liaoning Best Enterprise

China Huaxi Engineering
Design
P.R. China

www.lnbsd.cn »

www.dehua-eco.com
Suzhou DeHua Eco Tech Ltd.

Room 401 - 402
HaiShangYiPin
No. 110 JiuHua Road
Suzhou Industrial Park 215027
P.R. China

www.dehua-eco.com »



















top
1  Influent pipe 4  HD-PE
    membrane
    (2.5 mm)
7  Control and  
    measurement
    shaft
10  Fence
2  Inlet
    distribution
    ditch
5  Reed
    (Phragmites
    communis)
8  Drain pipe 11  Draining ditch 
3  Ground-water
    level
6  Outlet ditch 9  Windmill pump


Clarification results - mean decomposition rates of selected parameters


Influent Effluent
Chlorinated hydrocarbons
Chlorbenzenes (µg/l)(1) 47.2 1.6
Chlorphenols (µg/l) 25,5 1.6
Aromatic hydrocarbons
Benzene (µg/l) 62 1.35
Ethylene benzene (µg/l) 22 n.d.(2)
Naphthalene (µg/l) 31 0.02
Heavy metals
Arsenic (µg/l) 29 8
Mercury (µg/l) 0.9 0.6
( (1) µg/l – microgram per liters = 0.000001 g/l; (2) n.d. - not detectable )


After 25 years of operation this close-to-nature landfill leachate treatment plant
(constructed wetland) is still operating at a continuously high quality level. In addition,
the building and operating costs have been much lower than those of conventional
technical procedures.

More details are given under: