Water treatment plant

RIEFILT Mobile Abwasseraufbereitung 40 ft

Mobile treatment system for digestate, slurry, and slaughterhouse wastewater

Biogas plants and animal husbandry operations are facing increasing costs for the disposal and transport of liquid digestate and slurry. This system treats the wastewater on-site, separating it into clean permeate and a nutrient-rich concentrate. The permeate can be discharged, used for irrigation, or as utility water, and the concentrate can be used as fertilizer. The volume that needs to be transported is significantly reduced.

The entire system is mounted on a trailer. It is delivered, connected, and put into operation. Foundations, buildings, or permits for permanent installations are not required.

PROCESS
1. Pre-separation: equalization tank, peristaltic pump, two cyclones for the removal of sand and heavy solids
2. Ozone oxidation reactor: oxidative decomposition of the organic load with ozone directly in the water stream
3. Lamella separator: separation of coarse suspended solids
4. Microflotation (DAF): separation of suspended particles with microbubbles and ozone
5. Multi-layer filter: fine separation before the membrane stage
6. Reverse osmosis: open-channel modules with parallel spacers, up to 70 bar, very fouling-tolerant. The RO concentrate is returned to the DAF.

RESULTS FROM PILOT OPERATION (Evaluation by the Fraunhofer Institute)

Biogas digestate (decanter):
- COD: over 20,000 mg/l in the influent, 12 mg/l in the permeate
- Total nitrogen: 4,800 mg/l in the influent, 25 mg/l in the permeate
- N removal: 99%
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Slaughterhouse wastewater:
- COD: over 20,000 mg/l in the influent, 26 mg/l in the permeate
- Total nitrogen: 2,750 mg/l in the influent, 120 mg/l in the permeate
- N removal: 95%

Pig slurry (separated):
- COD: over 20,000 mg/l in the influent, 34 mg/l in the permeate
- Total nitrogen: 2,500 mg/l in the influent, 180 mg/l in the permeate
- N removal: 91%

The values are from pilot operation and laboratory validation. We will determine the performance for your wastewater after a water analysis, and we can also offer an on-site trial run.

YOUR ADVANTAGES
- Reduced volume for storage, transport, and application
- Permeate can be used for discharge, irrigation, or as utility water
- Concentrate can be used as fertilizer
- Mobile: can be used at different locations, trial run without investment
- Energy-efficient ozone oxidation, power consumption per m³ on request
- Fully automatic PLC control

APPLICATIONS
- Biogas plants: digestate treatment after the decanter
- Pig and cattle farming: slurry treatment
- Slaughterhouses and the food industry
- Other industrial wastewater with high organic loads, after evaluation

TECHNICAL DATA
System type: mobile wastewater treatment, ozone oxidation + DAF + RO
Design: 40-ft trailer
Process stages: cyclones, ozone oxidation reactor, lamella separator, DAF, multi-layer filter, reverse osmosis
RO modules: open-channel, 26.5 m² per module, up to 70 bar
COD influent: over 20,000 mg/l (pilot)
COD permeate: 12 to 34 mg/l (pilot)
N removal: 91 to 99% (pilot)
Control: PLC, fully automatic
Electrical: 400 V / 50 Hz, connected load 75 kW, fuse rating 150 A

MARKETING
- Rental with or without operation
- Treatment per m³: RIEFILT provides and operates the system; you pay per treated cubic meter
- Purchase on request
- On-site trial run possible to confirm the performance data

NOTES ON THE INFLUENT
For the design, we need an analysis of your wastewater (at least TS, COD, N-total, NH4-N, conductivity, pH) and the

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