Bids Are Invited For Hiring Companies In The Sector, To Purchase Chemical Products For Water Treatment In Wa ... in Brazil
Tender Notice
TenderID
113410794
Tender Brief
Bids Are Invited For Hiring Companies In The Sector, To Purchase Chemical Products For Water Treatment In Water Treatment Plants - Stages I, Ii, Iii, Iv And V, In Support Of The Municipal Department Of Water And Sewage, As Requested By The City Halls Works, Road And Urban Services Service
Hydrated Lime Or Calcium Hydroxide. Ca(Oh)2 For Water Treatment. Calcium Hydroxide Ca(Oh)2 Content Should Be High, Generally Greater Than 90% - 95% (Dry Basis). Magnesium Oxide (Mgo) Content: Should Be Low, Preferably ≪ 0.5%. Composition: The Product Must Essentially Be Calcium Hydroxide. Granulometry: Lime Must Be Finely Ground (Powder), With A High Percentage Passing Through Fine Sieves, To Facilitate Dissolution., Sodium Carbonate (Light Barrel) – Na2co3 Physical-Chemical Properties: Physical State – Solid Appearance And Odor – Irritant Minimum Purity In Na2co3 – 99.00% Maximum Nacl Content – 0.40% Maximum Na2so4 Content – 0.07% Maximum Fe2o3 Content – 0.003% Maximum Insoluble Content – 0.03% Maximum Moisture – 0.50% Apparent Density – 470 To 570 G/L Use: Water Treatment For Public Supply In 25 Kg Bags, Granulated Calcium Hypochlorite, With The Following Physical-Chemical Characteristics: -Presentation: White Granulated Solid; . Packaging: Resistant To Product Aggression; -Operational Parameters: Concentration: % By Mass (Active Chlorine) Minimum 65 Residue, Insoluble In Water: % By Mass, Maximum 5; . Granulometry: Sieve Number 10 (Opening 2Mm) % By Mass, Maximum Retained 0.5; . Sieve Number 100 (Opening 0, 149 Mm, Minimum Abnt 96, 5; . Toxic Elements: Maximum Limit Per Element In Mg/Kg, As 40, Cd4, Pb 40, Cr 40, Hg 0, 8, Ag 40, Se 8, 0; . Sum Of Maximum Toxic Elements 0, . Greenish. Density: Minimum 1, 200 G/Cm³. Ph: 9.0 – 12.0. Solubility: Complete In Water, Polyaluminum Chloride 18%, Pac 18. Polyaluminum Chloride 18% (Pac 18) Cationic Inorganic Coagulant, Liquid, Used In Water And Effluent Treatment. Appearance, Brown To Light Yellow Liquid. Alumina Content (Al2o3) Between 16% And 18%, Density Of 1.33 To 1.38 G/Cm3. Fe2o3 Content, Maximum Of 70Mg/Kg., Cationic Polymer Physical Appearance: Whitish Granulated Powder Or Liquid Emulsion Viscous. Ionic Charge: Cationic (Positive). Charge Density: 90 40 Solubility: Soluble In Water. Physicochemical Characteristics: - White Color; Density: 0.830 G/Ml; - Water Soluble Aluminum: (As Ai203) 16.00 To 20% (Solid); -Water Soluble Iron (As Fe 203) 0 To 0.01% Solid; Ai203) 0 To 0.4% Solid And Liquid; - Water Insoluble Residue 0 To 0.1% Solid; - Ventilated Solid: 100% Passan-Te#80 (0.180Mm).
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