Industrial Sao Paulo, Brazil case study


Courtesy of Biowater Technology AS

Project Name: Dairy
Location: Sao Paulo, Brazil
Type of Plant: Industrial
Consultant: Acqua Engenharia
Technology Used: CMFF (MBBR)
Biomedia Used: BWT35 media
Operational Since: August 2010

The Challenge
The customer is a producer of dairy products including: Milk, cheese, sour cream, butter and yogurt. In Sao Paulo City as in many large cities, the industries have to pay to discharge to the municipal wastewater system. This dairy was no exception. The immediate challenges they were facing were scaling issues and the lack of space to expand their treatment plant.

The Design
The customer's existing process was equalization and DAF flotation, one tank and a DAF that was out of service. Unfortunately there was no room for additional tankage, Biowater assessed the situation with their partner in Brazil. Acqua Engenharia. It was decided that the Biowater CMFF Moving Bed Biofilm Reactor process was chosen because of it's small footprint and low maintenance. The one tank was divided into two covered CMFF tanks. The existing DAF is now used as a secondary DAF.

By choosing the Biowater CMFF process combined with OAF separation the client was able to build the plant as compact as they had planned and still achieve the effluent quaility that they were aiming for. At start up the plant started having wave problems so the crew had to open up some 'breathing holes' which stopped the waves. In addition, foaming occurred which was predicted. Anti-foam products were used and handled the problem.

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