Skip to main content
Have a personal or library account? Click to login
Safety Analysis of Tap Water Biostability Cover

Safety Analysis of Tap Water Biostability

Architecture, Civil Engineering, Environment
Volume 11 (2018): Issue 1 (March 2018)
By: ,  ,   and    
Open Access
|Apr 2019
Figures & tables

Figures & Tables

Table 1.

Summary of the criteria for probability of exceeding the parameters BDOC, P∑Ninorganic and PO4 3-

ExplanationsPBDOCP∑Ninorganic PPO4 3- E(C)
Tolerable risk (RT ) → Cgr = f(S1 , S2 , S3 ) = (S1 = BDOC < 0.25 gC/m3) ∧ (S2 = ∑Ninorganic < 0.2 gN/m3) ∧ (S3 = PO4 3- < 0.03 gPO4 3-/m3)
RT 0.4170.8410.990.34719
Controlled risk (RCI ) → Cgr = f(S1 , S2 , S3 ) = (S1 = BDOC < 0.25 gC/m3) ∧ (S2 = ∑Ninorganic < 0.2 gN/m3) ∧ (S3 = PO4 3- ≥ 0.03 gPO4 3-/m3)
RCI 0.4170.8410.010.00350
Controlled risk (RCII ) → Cgr = f(S1 , S2 , S3 ) = (S1 = BDOC < 0.25 gC/m3) ∧ (S2 = ∑Ninorganic ≥ 0.2 gN/m3) ∧ (S3 = PO4 3- < 0.03 gPO4 3-/m3)
RCII 0.4170.1590.990.06564
Controlled risk (RCIII ) → Cgr = f(S1 , S2 , S3 ) = (S1 = BDOC ≥ 0.25 gC/m3) ∧ (S2 = ∑Ninorganic < 0.2 gN/m3) ∧ (S3 = PO4 3- < 0.03 gPO4 3-/m3)
RCIII 0.5830.8410.990.48540
∑RCI-III 0.55454
Controlled risk (RCIV ) → Cgr = f(S1 , S2 , S3 ) = (S1 = BDOC ≥ 0.25 gC/m3) ∧ (S2 = ∑Ninorganic ≥ 0.2 gN/m3) ∧ (S3 = PO4 3- < 0.03 gPO4 3-/m3)
RCIV 0.5830.1590.990.09177
Controlled risk (RCV ) → Cgr = f(S1 , S2 , S3 ) = (S1 = BDOC ≥ 0.25 gC/m3) ∧ (S2 = ∑Ninorganic < 0.2 gN/m3) ∧ (S3 = PO4 3- ≥ 0.03 gPO4 3-/m3)
RCV 0.5830.8410.010.00490
Controlled risk (RCVI ) → Cgr = f(S1 , S2 , S3 ) = (S1 = BDOC < 0.25 gC/m3) ∧ (S2 = ∑Ninorganic ≥ 0.2 gN/m3) ∧ (S3 = PO4 3- ≥ 0.03 gPO4 3-/m3)
RCVI 0.4170.1590.010.00066
∑ RCIV-VI 0.09734
Unacceptable risk (Runa ) → Cgr = f(S1 , S2 , S3 ) = (S1 = BDOC ≥ 0.25 gC/m3) ∧ (S2 = ∑Ninorganic ≥ 0.2 gN/m3) ∧ (S3 = PO4 3- ≥ 0.03 gPO4 3-/m3)
Runa 0.5830.1590.010.00093
Table 2.

The physical and chemical parameters of the intake water

ParameterTurbidityColour HazenPermanganate indexAmmonium ionIronManganeseTOCTotal hardnessSulfates
Value8-14 NTU40-10011.0-18.1 mg O2/dm3 1.2-1.98 mg NH4+/dm3 14.0-44.0 mg Fe/dm3 0.74-2.58 mg Mn/dm3 14-20 mg C/dm3 4.0-9.4 mval/dm3 60-240 mg SO4 2-/dm3
Table 3.

The physicochemical parameters were determined according to the applicable research procedures

ParameterResearch proceduresGuidelines of procedure
ammonium nitrogendirect nesserization methodPN-C-04576-4:1994P
nitric nitrogen (III)colorimetric method with 4-diazobenzenesulfonic acidPN-EN26777:1999
nitrate nitrogen (V)colorimetric method with sodium salicylatePN/C-04576.08
phosphatesspectrometric method with ammonium molybdatePN-EN ISO 6878
TOCTOC analyzer Sievers 5310C/PN - EN 1484:1999
BDOCthe modified Kaplan and Newbold method[21]
Figure 1.

Criteria for determining the individual safety levels taking into account the parameters of the treated water

DOI: https://doi.org/10.21307/acee-2018-015 | Journal eISSN: 2720-6947 (formerly 1899-0142) | Journal ISSN: 1899-0142
Journal RSS Feed
Language: English
Page range: 149 - 154
Submitted on: Jul 15, 2017
Accepted on: Dec 20, 2017
Published on: Apr 1, 2019
Published by: Silesian University of Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
Biofilm,
Biological stability of water,
Risk,
Water supply system,
Water quality assessment
Related subjects:
Architecture and design,
Architecture,
Architects, buildings

© 2019 Barbara TCHÓRZEWSKA-CIEŚLAK, Dorota PAPCIAK, Katarzyna PIETRUCHA-URBANIK, Andżelika PIETRZYK, published by Silesian University of Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Volume 11 (2018): Issue 1 (March 2018)
Previous article
Next article