Krüger Kaldnes AS Creating Water Solutions for the Aquaculture Industry

Transcription

1 Meeting the highest standards Krüger Kaldnes AS Creating Water Solutions for the Aquaculture Industry WATER TECHNOLOGY

2 Veolia Activities: The only company in the world able to cover the entire range of environmental solutions $30 billion 202,800 employees Water Wereldleider miljard The global benchmark for water services and technologies Energy The global benchmark for energy optimization Waste Management The global benchmark for waste management and resource recovery 2

3 VWS Region 3 Krüger A/S 4 offices Denmark Krüger Aquacare 4 offices Denmark DHA Spain Krüger Kaldnes 4 offices Norway UTEDEZA Spain Hydrotech 1 office Sweden Depuradora de Zaragoza Spain VWS Iberica 5 offices Spain VA- Ingenjörerna 9 offices Sweden VWS 4 offices Poland Baltic BUs Aquaflow OY 3 offices Finland Anox Kaldnes 1 office Sweden 1200 employees 3

4 Background to Veolia s involvement in RAS Veolia Krüger Kaldnes has supplied MBBR media to the aquaculture industry for >25 years Veolia Krüger Kaldnes was awarded a contract for biological solutions to Nofima, the largest R&D RAS facility in Europe. Veolia Krüger Kaldnes was awarded the first commercial scale DB contract with Marine Harvest in Dalsfjord Since 2009, Veolia Krüger Kaldnes have been awarded several large scale aquaculture plants, including the largest recirculating aquaculture facilities in Norway. 4

5 High Tech Project Complete VWS Solution Compact design Smallest footprint on the market VWS 100% integrated solution (Hydrotech, MBBR, KK degasing unit) All water treatment loop without piping Low energy Gravity as main driving force Low head pumps Heat recovering processes (water and air) Monitoring and control Water quality controlled in line VWS SCADA system Remote supervision and Hotline

6 The ultimate combination Micro filtration Best microscreen filters on the market Specifically designed for the aquaculture industry Biomass from the AnoxKaldnes MBBR process, fish faeces and excess feed is efficiently separated Advantages High hydraulic capacity Easy to operate Reliable Predictable results MBBR Biological engine of Kaldnes RAS Allows the micro-organisms to grow on sheltered, surfaces inside moving, plastic carriers creating a continuous biofilm process Advantages Compact process Well suited for treatment of large water flows Very robust Easy to operate Minimum need for maintenance no risk of clogging no need for back flushing 6

7 Drumfilters integration into RAS Hydrotech Drum- and Disk filters Small particles: Water Polishing down to µm Large particles: µm Filtration regime: 15/85 Typical RAS Qdim : m3/hr Filters integrated on top of MBBR Model HDF- 1AS, skid mounted inside MBBR

8 The MBBR Process o Process was developed in Norway in the 1980 s. First full scale plant built in 1989, still in operation today. o The process is based on the biofilm principle. The core of the process is the biofilm carrier elements made from polyethylene with a density slightly below that of water. o The carriers are designed to provide a large protected surface for bacteria development ( m 2 /m 3 ) but also optimal diffusion of gases and nutrients in and out of the biofilm. o Carriers are maintained in continuous motion within the reactor, using the aeration system or mechanical mixers o Continuous sloughing of excess biomass. Biofilm control through mixing intensity 8

9 Aerobic Operating Conditions Advantages of MBBR process Anoxic Can operate with the same support material for over 20 years No backwashing requirements No issues with gas entrapment ( N 2, CO 2 ) Can tolerate high TSS concentrations in the feed Can tolerate large hydraulic variations 9

10 CO2 and N2 removal Based on countercurrent aeration tower Small footprint and Optimal Hydraulic loading rate Gas/liquid ratio 5:1 Aeration under negative pressure 0,3mV/s High efficiency up to 75% removal Effect of G/L ratio for packed columns in different heights N2 saturation 100% 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% 0,25 0,5 0,75 1 1,25 1,5 1,75 2 2,25 2,5 m G/L : 5

11 Oxygenation-Deepshaft Greatly reduced energy costs Low pressure m (0.7-1 bar) Optimal use of head losses Dissolution efficiency % in freshwater

12 Kaldnes RAS - Video 12

13 Design innovation - Kaldnes RAS in Practice Nofima Research station Sunndalsøra (NO) Largest aquaculture recycling center in Europe Cutting edges technology Both fresh- and seawater 13

14 Design Innovation Kaldnes RAS in Practice MARINE HARVEST, DALSFJORD Fingerlings department 2 tons feed/day 2400 m3/h flow rate 250 sqm RAS area

15 Design Innovation Kaldnes RAS in Practice Sundsfjord Smolt AS Capacity 3 Millions smolts/year Total rearing volume 3000 m3 Complete process design and delivery by Krüger Kaldnes 15

16 Design Innovation Kaldnes RAS in Practice Seafarm BV (NL) Turbot Capacity 200 MT Turbot/year Innovative design as multilevel shallow Raceways (8 layers) 16

17 Design innovation - Kaldnes RAS in Practice Marine Harvest Steinsvik o Capacity of 5,3 mill smolt up to 250g/year o 3 departments o 9600 m 3 total fish tank volume o 10MT total daily feeding 17

18 Helgeland Smolt delivery 2016 RAS HALL E RAS HALL F Startfôring Klekkeri Yngelavdeling Teknisk NaOH sentraldosering Krüger Kaldnes 18

19 A compact solution for hatcheries and small units What are the implications of given future prognoses? o Up to 500m 3 /h, and 350 kg food/day o Hydrotech drumfilter included o Includes MBBR, CO 2 stripping and sump o Possibility to add options as UV, Ozone,etc. o Suitable for seawater o Easy set up easy operation o Dedicated SCADA and remote monitoring 19

20 RAS to reduce environmental impact of semi-intensive aquaculture Shrimp and Pangasius in Vietnam Case study VW Vietnam /KK Solution Assist client in redesigning pond structure and channels IN/OUT for water Module base water treatment unit to deal with TSS and BOD accumulating in ponds Combination Hydrotech Drumfilter/ MBBR/ UV Pilot specs - One RAS module for a group of ponds - Water exchange (make up water) ca 1-2%/day - 50% of total volume treated per day through RAS - Objectives: TAN<2mg/l, BOD<25 mg/l, TSS<70 mg/l - Productivity increased to 15 MT/ha

21 Questions? WATER TECHNOLOGY