Investments at WWTPs and industries (WP4)
Project BEST demonstrates how cooperation between local and regional stakeholders and the implementation of most suitable technological solutions results in better process control and treatment of industrial effluents, and thus, result in reduced load of nutrients and hazardous substances in outgoing waste waters.
Altogether five project partners will invest in new solutions for industrial waste water treatment. The investing partners include both dairy industries and municipal waste water treatment plants (WWTP):
- Leszno water utility (WWTP Henrykowo) in Poland is investing in pilot-scale fermentation installation. The aim is to demonstrate optimal utilization of industrial sewage and sludges for energy production. In cooperation with project partners, the Leszno water utility will evaluate the potential benefits of effluents from the meat processing industries, as well as the threats caused by industrial effluents from stockyards and growing industrial zones containing heavy metals and other harmful substances from the point of view of sludge utilisation for energy production.
- Doruchów Commune in Poland is investing in Phosphorus filtering system that enables nutrient recovery for industrial waste waters. Doruchów commune will separate treatment of the industrial and municipal wastewater and build a new treatment line for industrial wastewater treatment. The investment includes a pilot on phosphorous removal based on an innovative filter media technology (Polonite), which removes phosphorus without any chemicals and enables full phosphorous recovery from waste water.
- Põltsamaa waste water treatment plant in Estonia invests in analysing equipment to be able to monitor the contents of industrial effluents and ensure sufficient capacity of the WWTP during high flows of industrial effluents. Põltsamaa waste water treatment plant is receiving wastewaters with high biological oxygen demand (BOD) and nutrient contents from food production industry and dairy production of E-Piim company.
- E-Piim dairy company in Estonia is investing in regulation facilities by building a new regulation tank. E-Piim has already established pretreatment facilities but to optimize the treatment process at municipal Põltsamaa WWTP, effluent flows should be further regulated.
- Latvijas Piens dairy production company is investing in process control and flotation facilities to reduce the BOD and nutrient load and thus improve the quality of their effluent wastewater. Pre-treatment and better process control of these effluents are needed to enhance the treatment results at Jelgavas Udens municipal WWTP.
Wastewaters from food and dairy production have high organic (BOD) and nutrient pollution content, and furthermore, the amount of sewage depends on production processes and can fluctuate significantly, which causes capacity problems for receiving municipal WWTPs. Technical solutions for pre-treatment and regulation are often rather simple and cost-efficient. In the BEST project, the technical solutions developed and implemented jointly by municipalities and industries will demonstrate case-examples that ensure both efficient treatment and recycling of nutrients at the municipalities receiving wastewaters from food and dairy production.
Although the challenges in treatment of industrial effluents are related to techniques, another equally important aspect is the institutional practices: joint planning, communication and cooperation between industrial, water utility and municipal parties as well as local or regional permitting authorities. The project activities will demonstrate in practice how, in addition to well-planned and cost-effective technical investments, development of better management and cooperation between stakeholders plays a key role in improved treatment of effluents