Intern Impact of DAF-unit on H2S levels in municipal sewer
Intern Impact of DAF-unit on H2S levels in municipal sewer
Impact of DAF-unit on H2S levels in municipal sewer
The production facility of FrieslandCampina in Veghel produces single ingredients like cream, caseinates, whey proteins, lactose and other products from raw milk and cheese whey. During these processes and during cleaning, wastewater is produced. The key process of wastewater processing in Veghel is to remove nitrate (from nitric acid usage) and COD by anoxic denitrification. After the denitrification the wastewater is sufficiently treated to be within the specifications that are agreed upon with the authorities and is currently directly discharged on the communal sewer system of Veghel.
Recently, site Veghel started an engineering project to implement an extra treatment step to ensure future compliance, in the form of a so called “Dissolved Air Flotation”-Unit (DAF). This unit will mainly improve (precipitated) phosphate removal but in the same processing step the DAF will also remove N-Kj and COD (mainly through biomass removal). Treated effluent will then be discharged in the municipal sewer.
In the current configuration of the process, nitrate levels are low, temperature is high and biomass is available. Therefor, an anaerobic environment exists and sulphate reduction will take place, producing hydrogen sulfide. On occasion, this causes odor nuisance in the close surroundings of the site. Theoretically the DAF-unit will remove biomass, which is expected to lead to a decrease of sulphate reduction and subsequently will reduce the odor nuisance. This study will focus on the mapping of these effects to be able to forecast the future situation.
What we ask
- Applied sciences or academic working and thinking level
- Study types: Chemical or process engineering, environment, and/or food processing related studies
- Experience with analyzing process data (and Power BI) comes in handy but is not required
- Experience with analyzing process data is a pre
- Language: Primary language at the production locations is Dutch, which is a pre but not a must.
- Duration: 4-6 months
- Personal characteristics: self starter, broad perspective, analytical, assertive
What we offer
We offer an interesting and challenging internship in which you will have the freedom and opportunities withing the assignment to further develop yourself in your area of interest. You can count on professional guidance and a fair internship allowance.
Vacancy description
The main goal of the internship is to predict the amount of H2S production and maximum H2S-levels different circumstances.
Literature study on denitrification and sulphate reduction
Build mini-bioreactors and monitor different conditions of
- biomass levels
- sulphate levels
- nitrate levels
- impact of temperature
Determining optimal conditions to reduce H2S formation and its impact
Forecast and control future situations on H2S formation
Team Details
You will work in the technologist team at FrieslandCampina Veghel. This young team consists of motivated technologists who like to apply their knowledge in practice. The office is centrally located on the production site, making it easy for you to enter the factory to sort things out. The technologists in Veghel ensure that the right quality product is made, they make improvement proposals and support in projects.
