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The Reuse of Washings from Pool Filtration Plants After the use of Simple Purification Processes

Joanna WYCZARSKA-KOKOT
Joanna WYCZARSKA-KOKOT
 e 
Anna LEMPART
Anna LEMPART
   | 04 apr 2019
Architecture, Civil Engineering, Environment's Cover Image
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Pubblicato online: 04 apr 2019
Pagine: 163 - 170
Ricevuto: 24 mag 2018
Accettato: 02 lug 2018
DOI: https://doi.org/10.21307/acee-2018-049
Parole chiave
© 2018 Joanna Wyczarska-Kokot et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1.

pH values of washings from tested pools
pH values of washings from tested pools

Figure 2.

COD values of washings from tested pools
COD values of washings from tested pools

Figure 3.

BOD5 values of washings from tested pools
BOD5 values of washings from tested pools

Figure 4.

Total nitrogen (TN) concentration in washings from tested pools
Total nitrogen (TN) concentration in washings from tested pools

Figure 5.

Total phosphorus (TP) in washings from tested pools
Total phosphorus (TP) in washings from tested pools

Figure 6.

Comparison of TSS content in raw washings and after sedimentation in supernatants
Comparison of TSS content in raw washings and after sedimentation in supernatants

Figure 7.

Comparison of TSS content in supernatants after sedimentation and coagulation
Comparison of TSS content in supernatants after sedimentation and coagulation

Figure 8.

Concentration of free chlorine in washings from tested pools
Concentration of free chlorine in washings from tested pools

Figure 9.

Concentration of free chlorine in raw samples and supernatant after two-hour sedimentation
Concentration of free chlorine in raw samples and supernatant after two-hour sedimentation

Types of pools and characteristics of their filtration system

Swimming pool Type of swimming pool Filters Rinsing method
P1 School, for swimming lessons 2 × DN 630 mm Air and water, every 2÷3 days
P2 Water Slide 2 × DN 2000 mm Air and water, every 2÷3 days
P3 Bath tube 1 × DN 1200 mm Water every 1÷2 days
P4 Sports & Recreational 2 × DN 1600 mm Air and water, every 2÷3 days
P5 For toddlers 2 × DN 1050 mm Air and water, every 2÷3 days
P6 For toddlers 2 × DN 1200 mm Air and water, every 2÷3 days
P7 For swimming lessons 2 × DN 1800 mm Air and water, every 2÷3 days
P8 Sports & Recreational 2 × DN 1800 mm Air and water, every 3÷4 days
P9 Sports & Recreational 2 × DN 1800 mm Water, every 7 days
P10 School, for swimming lessons 2 × DN 765 mm Air and water, every 3÷4 days
P11 Sports & Recreational 2 × DN 1800 mm Air and water, every 3÷4 days
P12 Recreational with Water Slide 2 × DN 1800 mm Air and water, every 3÷4 days
P13 3 × Bath tube 3 × DN 1400 mm Water, every 1÷2 days
P14 School, for swimming lessons 2 × DN 765 mm Water, every 5÷6 days
P15 Water Tunnel 2 × DN 1400 mm Air and water, every 1÷2 days
P16 Sports & Recreational 2 × DN 1800 mm Air and water, every 4 days
P17 Recreational 2 × DN 1600 mm Air and water, every 4 days
P18 Bath tube 1 × DN 800 mm Water, everyday
P19 Sports & Recreational 2 × DN 1800 mm Air and water, every 2 days
P20 Sports & Recreational 2 × DN 1800 mm Air and water, every 3÷4 days

Comparison of impurity indicators values in raw washings with permissible values according to the Polish Regulation [15]

Indicator Unit Average values of impurity indicators Permissible value
P1 P2 P3 P4 P5 P6 P7 P8 P9 P10 P11 P12 P13 P14 P15 P16 P17 P18 P19 P20
pH [-] 8.17 7.52 7.44 9.13 7.82 8.16 7.87 7.54 6.78 8.62 7.88 7.54 7.79 7.40 7.47 7.53 7.09 7.39 7.20 7.51 6.50-9.00
Temperature [°C] 29.0 29.0 28.0 19.0 29.0 28.4 29.5 27.8 - - 23.0 22.5 20.3 24.0 23.0 28.0 31.5 35.0 28.0 23.0 35.0
Total nitrogen (TN) [mg TN/L] 8.68 9.03 14.50 9.76 7.85 3.60 6.98 11.40 - - 23.80 - 8.83 23.07 14.44 8.30 14.30 26.20 9.55 15.03 10.00
Total phosphorus (TP) [mg TP/L] 0.29 0.02 0.73 1.26 0.01 0.20 0.36 0.94 0.05 1.26 0.52 - 1.11 1.41 1.24 0.55 0.57 0.21 0.15 1.04 1.00
COD [mg O2/L] 67.1 41.5 160.0 66.3 12.5 33.4 120.0 180.0 40.9 308.0 68.1 52.5 65.7 252.2 150.5 74.5 177.3 160.0 174.0 124.8 125.0
BOD5 [mg O2/L] 0.7 0.7 2.3 0.4 0.4 25.0 6.0 15.0 11.0 23.0 5.5 6.0 11.4 2.7 1.7 11.0 3.0 1.0 2.5 2.3 15.0
Free chlorine [mg Cl2/L] 0.36 0.50 0.38 0.00 0.29 0.02* 0.05* 0.04* 0.32 2.39 0.34 0.41 0.26 0.32 0.35 0.51 0.70 0.49 0.57 0.21 0.20
Chlorides [mg Cl-/L] 225 370 108 170 162 40 140 190 71 151 201 158 189 181 36 138 162 83 92 127 1000
Aluminum [mg Al3+/L] 0.08 0.23 0.52 2.21 0.01 - - - 0.02 0.57 0.45 0.76 0.66 0.56 0.50 0.38 0.26 0.45 0.07 0.34 3.00
Sulfates [mg SO44 -2/L] 437 137 177 238 137 - - - - - 310 326 - - - 441 98 75 115 - 500
TSS [mg/L] 186 43 367 280 44 200 78 164 46 325 161 112 107 360 67 109 216 187 57 50 35
TSS in supernatant [mg/L] 51 32 20 57 29 20 26 14 21 61.6 84 46 26 32 45 17 3 18 17 38 35
Turbidity [NTU] 42.0 7.8 70.1 197 4.66 533 25.6 37.4 11.2 286 29 92.2 94.7 281 64.2 89.5 216 5.00 56.2 38.9 -
Turbidity in supernatant [NTU] 3.2 4.4 24.6 11.8 2.6 37.0 1.8 1.9 - - - - - - - 8.3 3.0 5.1 9.0 - -
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