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Cross-border network for knowledge transfer and innovative development in wastewater treatment WATERFRIEND HUSRB/1203/221/196 2nd Training course – I ndustry wastewater treatment. 2nd Training course Waterfriend.

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  1. Cross-border network for knowledge transfer and innovative development in wastewater treatmentWATERFRIENDHUSRB/1203/221/1962nd Training course – Industry wastewater treatment

  2. . 2nd Training course Waterfriend . Applicationof natural coagulants in water and wastewater treatment Jelena M. Prodanović

  3. . 2nd Training course Waterfriend . CHEMICAL COAGULANTS NATURAL COAGULANTS good coagulation efficiency not harmful inexpensive biodegradable sludge easily dosed reduced sludge volumes chemically aggressive lower coagulation efficiency harmful residues more expensive sludge troubles significantly affect pH of treated water low coagulation efficiency in cold waters

  4. . 2nd Training course Waterfriend . Municipal wastewater (40 000 PE) Wastewaters of two food factories Sewage wastewater Wastewaters of two metal industry factories Infiltration waters The average concentrations of pollution in influent (mg/L)

  5. . 2nd Training course Waterfriend . • Required percentage of wastewater treatment (according to EU Directive 91/271/EEC)

  6. . 2nd Training course Waterfriend . Typical municipal wastewater plant

  7. . 2nd Training course Waterfriend . Alum – KAl(SO4)2∙12H2O COAGULANTS Natural coagulant extracted from common bean ground sample (<0,4 mm) distilled water EXTRACTION (10 g/l, 10 minutes) FILTRATION CRUDE EXTRACT

  8. . 2nd Training course Waterfriend . Efficiency of wastewater treatment with no coagulant BOD: 185.5 mg/L SS: 98 mg/L BOD: 27.8 mg/L BOD: 265 mg/L SS: 245 mg/L AEROBIC TREATMENT PRIMARY CLARIFIER BOD: 70 ÷ 85 % TKN and TP: 10 ÷ 20 % BOD: 25 ÷ 40 % SS: 50 ÷ 70 % TKN and TP: 5 ÷ 10 %

  9. . 2nd Training course Waterfriend . Efficiency of wastewater treatment with alum BOD: ~50 mg/L SS: 13 mg/L ALUM: 80 mg/L BOD: <10 mg/L BOD: 265 mg/L SS: 245 mg/L ALUM: ~1.8 g/L AEROBIC TREATMENT PRIMARY CLARIFIER BOD: 70 ÷ 85 % BOD: ~80 % SS: up to 95 %

  10. . 2nd Training course Waterfriend . Efficiency of wastewater treatment with natural coagulant Natural coagulant: 5 mL/L BOD: 106 mg/L BOD: 16 mg/L BOD: 265 mg/L AEROBIC TREATMENT BOD: 70 ÷ 85 % PRIMARY CLARIFIER BOD: ~60 %

  11. . 2nd Training course Waterfriend . Thank you for attention Presentation/lecture has been produced with the financial assistance of the European Union. The content of the presentation/lectureis the sole responsibility of University of Novi Sad, Faculty of Technology and can under no circumstances be regarded as reflecting the position of the European Union and/or the Managing Authority.

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