Limnological Aspects and Mechanisms of in situ
Arbeitsgemeinschaft Badeseen und Schwimmteiche Forschungsgemeinschaft Landschaftsentwicklung Landschaftsbau e. V. Deutsche Gesellschaft für das Badewesen e.V. 1. Basics of the Dimension according to fll 2. External water treatment 1. Different ex situ water treatment facilities 2. Specific elimination rates 3. Basics of the Calculation model for NSP 4. Trouble shooting Author: Stefan Bruns, Polyplan GmbH 6th International Conference Swimming Pool & Spa, Amsterdam, March 17-20, 2015 Who is Polyplan 25 years experiences in designing public pools and bathing lakes. 27 Engineers, Architects and Biologists are located in Bremen, Hannover and Warsaw. www.polyplan-gmbh.de Chlorine 6th International Conference Swimming Pool & Spa, Amsterdam, March 17-20, 2015 Biological Bathing lakes Dipl. Ing. Stefan Bruns 1 Basics of the FLL regulation 1.1 Exsitu- Insitu 1 Pool (In situ) Clear water volumen flow V3 Raw water Volumen flow (V1) (V1=V3) Biological water treatment assording to Tab. 10-12 (ex-situ) (V2) Additional Water treatment (phys. Chemical) Volumen flow Additional water treatment (V2) 6th International Conference Swimming Pool & Spa, Amsterdam, March 17-20, 2015 2 External water treatment 2.1 Different ex situ water treatment fasilities Hydro botanic Constructed wetlands 6th International Conference Swimming Pool & Spa, Amsterdam, March 17-20, 2015 2 Substrate filter Bio filter 2 External water treatment 2.1 Different ex situ water treatment fasilities 2 Hydro botanic Constructed wetlands 6th International Conference Swimming Pool & Spa, Amsterdam, March 17-20, 2015 Bio filter 2 External water treatment 2.1 Different ex situ water treatment fasilities 2 6th International Conference Swimming Pool & Spa, Amsterdam, March 17-20, 2015 2 External water treatment 2.2 Specific elimination rates 2 López Pila 2009 At spec. Hydraulic load of up to 900 cm/day , elimination rates of more than 96,5 % of the E.coli 1.5 log steps elimination of Giardia, cryptosporidia Oocyst. In Operation 600 Raw water 500 Dr. Heinemeyer, Landesgesundheitsamt Niedersachsen, Heiko Frehse, Stefan Bruns, 2010 At spec. Hydraulic loads up to: 400 600 cm /day. 99,2 % 1200 300 cm 95 % of the E.coli stemp Quantity E. coli / 100 ml I. Scholz, H. Frehse und J. Spieker, 2004. Clear water Lab experiement 200 at.100 spec. hydraulic load up to: 350 cm/day. 99,9 % of the E.coli and int. 0Enterococci were eliminated. Filter 10.00 16.00 22.00 thicknes 1.4 m 6th International Conference Swimming Pool & Spa, Amsterdam, March 17-20, 2015 Time In operation 10.00 2 External water treatment 2.2 Specific elimination rates 2 Results of elimination rates according different species, HF = horizontal filter, VF = vertical filter 6th International Conference Swimming Pool & Spa, Amsterdam, March 17-20, 2015 2 External water treatment 2.2 Specific elimination rates 2 6th International Conference Swimming Pool & Spa, Amsterdam, March 17-20, 2015 2 External water treatment 2.2 Specific elimination rates 2 Figure 38: Elimination rate of Colipharge with a constructed wetland with 1.2 m (blue) and 1.7 m (violet) filter head. 6th International Conference Swimming Pool & Spa, Amsterdam, March 17-20, 2015 2 External water treatment 2.3 Design aspects Hydrobotanic Biofilter / Substrate filter 6th International Conference Swimming Pool & Spa, Amsterdam, March 17-20, 2015 2 3 Basics of the Calculation model for NSP 3.1 Impression of a high duty bathing day 3 6th International Conference Swimming Pool & Spa, Amsterdam, March 17-20, 2015 3 Basics of the Calculation model for NSP 3.1 Calculation 3 Substance input by filling water CFW(Stoff)* VFW/VB nBg(Stoff)* Sub. input Substance input by Bathers Bg(Stoff)/VB Tolerable substance concentration C0 Wert Tolerable substance concentration TRed(Stoff) T=0 6th International Conference Swimming Pool & Spa, Amsterdam, March 17-20, 2015 T=Tred 3 Basics of the Calculation model for NSP 3.1 Calculation Formular 1 nBg C VFw C 0 Fw unverdünnt exp C0 e VB VB Stoffinput Bg Variables: nG = exp Number of guests per day [G/day] Refer to Formula 2 CFw undiluted = Concentration of substance or microorganisms in the filling water [mg/m³ or cfu/m³] VFw = Volume flow of filling water [m³/d] VP = Pool volume [m³] = Initial concentration of substance or microorganisms [mg/m³ or cfu/m³] Constants: C0 [20 mg/m³] Ptotal P or 500,000 [cfu/m³] E. coli Substance input G = Influx of substances and microorganisms per guest [mg/G; cfu/G] [74 mg/G] Ptotal P or 120,000 [cfu/G] E. coli e = Euler's number 6th International Conference Swimming Pool & Spa, Amsterdam, March 17-20, 2015 3 Basics of the Calculation model for NSP 3.1 Calculation Formular 2 V T Zoo exp Eli Re d Zoo Zoo V 24 B V T n WA (i) Eli Re d WA WA (i) 24 V B i 1 1 Variables: VZoo = Filter volume flow of zooplankton [m³/d] VP = Pool volume [m³] VWP(i) = Volume flow of purification system examined (1..n) [m³/d] EliP(i) = Elimination rate of water purification system (1..n), based on the examined substance [factor 1 = 100 %]. Depending on the water purification system (i) and the examined substance E. coli or Ptotal P, the value specific to the system should be inserted here; refer to section 5.3.2 Tred. zoo = Time in which the substance reduction red by zooplankton is to occur [h] Tred. WP = Time in which the substance reduction red by the filter system is to occur [h] Elizoo = Elimination rate of zooplankton in the body of water, based on the examined substance [factor 1 = 100 %] Constants: Elizoo(E.coli) = 1 [factor] or EliZoo(Ptotal P) = 0.01 [factor] 6th International Conference Swimming Pool & Spa, Amsterdam, March 17-20, 2015 3 Basics of the Calculation model for NSP 3.2 Variables 3 Stefan Bruns 6th International Conference Swimming Pool & Spa, Amsterdam, March 17-20, 2015 3 Basics of the Calculation model for NSP 3.2 Results Fll 2011 Extensiv + Semi extensiv + 4,7 m³/Bg/d VFillwater Vclearwater + 10 m³/Bg/d 10 m³/Bg/d Semi intensiv + 3,7 m³/Bg/d + 2,8 m³/Bg Intensiv + 2,5 m³/Bg/d + 1,0 m³/Bg VBasinwater Vspez = Tred Ecoli =8h Tred Pges-P = 48 h 10 m³/Bg/d = 14,61 m³/Bg/d = 6,6 m³/Bg/d = 3,5 m³/Bg/d WA= Area of the Water treatment plant in m² NW= Area of the basin in m² Zm= 1,5 m Recirculation Rate = 0 d-1 Recirculation rate = 0,475 d-1 Recirculation rate = 0,84 d-1 Recirculation rate = 3,5 d-1 WA/NW 0/750 m² WA/NW 82/750 m² WA/NW 190/750 m² WA/NW 530/750 m² 6th International Conference Swimming Pool & Spa, Amsterdam, March 17-20, 2015 4 Trouble shooting 4.1 P.A. Exceeding Stadion bath Bremen 4 6th International Conference Swimming Pool & Spa, Amsterdam, March 17-20, 2015 4 Trouble shooting 4.1 E. coli exceeding NSP Zeven 6th International Conference Swimming Pool & Spa, Amsterdam, March 17-20, 2015 4 4 Trouble shooting 4.1 E. coli exceeding NSP Zeven 6th International Conference Swimming Pool & Spa, Amsterdam, March 17-20, 2015 Thanks for attention Dipl. Ing. Stefan Bruns www.Polyplan-Gmbh.de 6th International Conference Swimming Pool & Spa, Amsterdam, March 17-20, 2015
© Copyright 2024