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Pet food producing wastewater treatment

ClearFox® SBR system and ClearFox® lamella clarifier for pet food producing wastewater treatment

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ClearFox pet food producing wastewater treatment
ClearFox treatment of industrial wastewater
ClearFox clarifier

Project

Pet food producing wastewater treatment

Data

2011

Location

Germany

Application

ClearFox® biological wastewater treatment

Size

25 m³/day

Characteristics

  • Reliable compliance with discharge values
  • Complete planning of the wastewater treatment plant by ClearFox® engineers
  • Direct discharge into a receiving waterbody

Sector

Industrial wastewater treatment in the processing of pet food

SITUATION

A producer of pet food asked PPU for a treatment plant for the wastewater. The reason for this was the expansion of the processing capacities. This resulted in more wastewater, which the customer no longer wanted to discharge into the municipal sewage treatment plant. He wanted a solution for direct discharge into a receiving water body. For this, the discharge values had to be greatly reduced.

Wastewater from the processing of pet food is very similar to conventional wastewater from the food and beverage industry. In this case, the COD was 2,000 mg/l and the BOD5 was 1,500 mg/l. The wastewater mainly comes from cleaning the machines as well as from hygienic wastewater from the employees. Therefore, cleaning chemicals and soaps also mix into the wastewater.

PROBLEM

The challenge in this project was the irregular supply of wastewater in combination with the strict discharge values. While very little wastewater is generated overnight and at weekends, a lot of wastewater is generated during production hours. Despite the fluctuating wastewater loads, the treatment plant must deliver reliable treatment performance to meet all direct discharge requirements.

SOLUTION

To begin with, PPU carried out an on-site visit. In the process, it took wastewater samples, which the Bayreuth-based company analysed in its in-house laboratory. The ideal solution for achieving the required discharge values was a ClearFox® SBR system with a connected lamella clarifier. The wastewater first flows into a collection tank, which the company installs underground on site. From there, the wastewater flows into the SBR reactor, which the ClearFox® team installed in two towers. This is where the biological wastewater treatment takes place. Afterwards, a ClearFox® clarifier separates the clearwater from the sludge.

For this project, PPU took over the complete planning of the wastewater treatment plant. The combination of ClearFox® SBR system and ClearFox® lamella clarifier guarantees compliance with all required discharge values. Thus, the COD drops to 436 mg/l and the BOD5 to 190 mg/l. Thanks to the flexible planning options, the ClearFox® engineers made optimal use of the existing possibilities on the company premises to ensure the best possible solution for wastewater treatment in the processing of pet food.

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