Product: Geotube® Dewatering Technology
A Chilean fish processing plant wanted to develop a cost-efficient method of managing its waste products.
Geotube® dewatering technology was used by the owner to take the blood water (mixture including blood, fish parts, and lipids) from the processing plant and dewater it with Geotube® containers [photo 2].
The fish processing waste material flowed from the plant to an elevated drum filter where the initial separation took place. The solids dropped out over a gravity flow separator. Liquid waste flowed into a homogenization tank [photo 3]. Next the pH was tested and adjusted with caustic soda as needed. Then conditioner was added to the homogenization tank [photo 4]. A control system was used to measure and apply the correct dosages. Polymer was injected into the feedline as it passed through a mixing chamber en route to the Geotube® containers [photo 5].
The Geotube® dewatering process yielded clear effluent. [Photo 6 shows the transition from raw waste (on left), to conditioner step (in middle), to polymer step (on right.) Photo 7 presents the dewatered effluent after one hour.]
After the Geotube® dewatering on the blood water, the test results revealed the following:
- Solids Removal: 97%
- BOD Reduction: 80%
- Nitrogen Capture: 92%
- Oils and Fats Removal: 97%