CERTIFICATE OF ANALYSIS

Transcription

1 1 CERTIFICATE OF ANALYSIS ATTENTION: Water Purification Solutions DATE: 29 November GENERAL: Table-1: Tierkloof Borehole & Product - Sampled 1 November 2018 Results expressed in parts per million (mg/l) unless specifically stated. CONSTITUENTS Sampled 21-June-18 Tierkloof 1 November 2018 WHO - QC DETERMINANTS Borehole Product Borehole Product (Targets Limits) Conductivity (us/cm) < 750 Total Dissolved Solids 105 C) to 500 Total Suspended Solids (TSS).46 BDL 4.08 BDL Absent Turbidity (NTU) < 0.5 (Target < 0.20) Colour (Pt/Co-units) < 0 (Target < 20) H (ph-units) to 8.50 Alkalinity (Total) to 200 Total Hardness (TDH as CaCO ) to 220 Calcium (as Ca) to 80 Magnesium (as Mg) to 5 Aluminium (Al) (Total) ( g/l) BDL < 150 Copper (Cu) ( g/l) < 200 Iron (Fe) Total ( g/l) BDL < 200 (Target < 20) Iron (Fe Dissolved) ( g/l) BDL (Target < 20) Iron (Fe Organometallic) ( g/l) BDL Stubbornly soluble BDL = Below Detection Limit (µg/l) = Micrograms per litre = Parts per billion (mg/l) = Milligrams per litre = Parts per million 1

2 2 CONSTITUENTS DETERMINANTS Results expressed in parts per million (mg/l) unless specifically stated. RO Feed Goals Borehole Product Borehole Product (Comments) Manganese (Mn - Dissolved) ( g/l) BDL < 50 (Target < 10) Total Heavy Metal Content ( g/l) (As + Cd + Cr + Hg + Pb + Sb + U) 25 BDL 24 BDL < 20 (Target = 0) Silica (Total as SiO 2) ( g/l) < 10 Colloidal Silica (as SiO 2) ( g/l) 924 BDL 86 BDL 5 to 100 Potassium (K) to 100 Sodium (Na) to 100 Chloride (Cl) to 100 Sulphate (SO 4) < 250 Sulphides (R-S-R) ( g/l) BDL BDL BDL BDL < 2.0 (Target = Eliminate) Free & Saline Ammonia (as N) ( g/l) 250 BDL 192 BDL < 200 (Target < 50) Fluoride (F) < 0.50 Nitrate (NO ) + Nitrite (NO 2) as N < 10 (Target < 5.0) Total Organic Carbon (TOC) Eliminate suspended Carbon Dissolved Organic Carbon (DOC) < 10.0 (Target < 5.0) Tannoids (Total) BDL BDL BDL BDL Contribute to DOC & Colour As = Arsenic Cd = Cadmium Cr = Chromium Hg = Mercury Pb = Lead Sb = Antimony U = Uranium TON = Threshold Odour Number BDL = Below Detection Limit g/l = Micrograms per litre (Parts per billion) mg/l = Milligrams per litre (Parts per million) 2

3 Water Treatment Critical Data Borehole Product Borehole Product Product Bulk Supply Goals Total Suspended Solids (TSS).46 BDL 4.08 BDL Must be Absent Active Oxidant (Total) (R-OCl) ( g/l) NA BDL NA BDL 50 HOCl 150 Turbidity (NTU) Target < 0.20 NTU after 0.2- lab filtration test.4 NA Show influence of suspended-content, NTU after H 2O filtration test 0.15 NA oxidizable-content & NTU after PAC lab filtration test DOC on Turbidity Colour (Pt/Co-units) Target < 15 after 0.2- lab filtration test 1 NA 0 NA Show influence of suspended-content, after H 2O filtration test 1 NA 14 NA oxidizable-content & after PAC lab filtration test DOC on Colour Saturation Index 22 C) > Index < Stiff & Davis Index 22 C) Oxidation Demand (mg/l - H2O2) after 0.2- filtration Target 5.0 As = Arsenic Cd = Cadmium Cr = Chromium Hg = Mercury Pb = Lead Sb = Antimony U = Uranium TON = Threshold Odour Number BDL = Below Detection Limit g/l = Micrograms per litre (Parts per billion) mg/l = Milligrams per litre (Parts per million)

4 4 Biological Activity Borehole Product Borehole Product RO Application Comments RO Feed - Goals Total Heterotrophic Plate Count (THPC) (Colonies per ml) Total Coliforms (Colonies per 100-ml) Total Faecal (Coliforms per 100-ml) A max of No Growth 7 No Growth Zero 15 No Growth 8 No Growth Zero Total Macro-Biological Count (Organisms per 1000-ml) None Active Noted None Noted None Active Noted Zero Moulds & Yeasts (Positive Negative Test) Negative Negative Negative Negative Must be Negative BDL = Below Detection Limit (µg/l) = Micrograms per litre = Parts per billion (mg/l) = Milligrams per litre = Parts per million 4

5 Tierkloof Borehole & Product - Sampled 1 November NOTES: Be aware of the units of concentration used in the table. (1.0-mg/l = g/l).. DISCUSSION: I. Product: The water quality shows up good with all health linked parameters examined within the guideline limits stipulated. (WHO Potable Standard). Yours sincerely Gordon Reid Water Treatment Division 5