Leachate from landfill

Wastewater treatment system with special ClearFox® module

Abwasserreinigungssystem
Wastewater treatment system
Abwasserreinigungssystem

Data

2018/2019

Location

Germany, Paderborn

Application

Precipitation,Flocculation,Dissolved Air Flotation,ozone treatment,Denitrification,Nitrification,Fuzzy Filtration, Activated Carbon Adsorption,the sludge goes to an existing gravity thickener and it is pressed in certain intervals.

Size

600 m³/d, max 25 m³/h

Effluent quality

Europian standarts

Modules

Dissolved Air Flotation (DAF)
Ozone treatment
Fixed bed biological reactor FBR (nitrification, dinitrification)
clarifier

Characteristics

he best price/quality relation in comparison to our competitors all over Europe

Sector

Landfill with production residues (i.e electroplating, fuel ashes), urban, oily and construction waste

SITUATION

AVE – Alte Schanze, Germany is a landfill with production residues (i.e electroplating, fuel ashes), urban, oily and construction waste.

Out of the landfill drains around 200.000 m3 leachate per year, which is collected and which needs to be treated. The old wastewater treatment system was not able to reach the effluent requirements. A new wastewater treatment system was put out to tender by the local government.

PROBLEM

Leachate from landfill is wastewater, which accumulates on the bottom of a landfill. The composition and the hydraulic flow of this water depends on the type of waste which was stored, the annual precipitation and last but not least the age of the landfill.

Older landfills drain less biodegradable organic matter (BOD/COD relation to zero). Typically pollution can be high, nitrogen concentrations (NH4, N02, N03, various hydrocarbons – often organ halogens, chlorides, sulphates, different heavy metals
(i.e. Zn, Cu, Ni, Cr, Cd, Hg, Pb and more)

The water usually shows less turbidity, it has a less brown color and a strong smell can be detected. So in short: it is highly polluted, it has fluctuating hydraulics and it requires various process technologies to meet the effluent requirements, according to the local regulations.

SOLUTION

After a selection period finally PPU was submitted for engineering, procurement and construction of the main part of the new waste water system.

We could offer out of one hand our standard ClearFox containerized treatment modules by looking back on more than 25 years experience of industrial wastewater.

The process technology suggested from PPU was validated by external consulting offices. All modules have been before approved externally, the precasted modules had finally the best price/quality relation in comparison to our competitors all over Europe.

The wastewater can be led through several process steps. The process is fully automatic and the daily flowrate, which is depending on the rainfall can be adjusted manually. All steps can be bypassed, and the flow can be reversed by manually switching valves (i.e. if more nitrate in raw water, then first denitrification, then nitrification)
The following effluents between the treatment steps are achieve

The wastewater treatment system was brought into operation in November 2018. The final acceptance procedure was the end of March 2019. Manufacturing time was 12 weeks.

TECHNICAL DATA

  1. Dissolved Air Flotation
  2. Ozone treatment
  3. Fixed-bed biological reactor FBR (nitrification- denitrifcation)
  4. Final clarifier as lamella separator

Capacity: 600 m³/d, max. 25 m³/h

Input: Landfill waste water

Output: German, European and International standards

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