Waste water treatment
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It is much industrially oriented. One can understand the steps involved in such Industries how they remove the wastes.
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In this type of reactor, a fluid (gas or liquid) is passed through a solid granular material (usually a catalyst possibly shaped as tiny spheres) at high enough velocities to suspend the solid and cause it to behave as though it were a fluid.
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1) Water treatment involves ensuring a safe and clean drinking water supply. It requires identifying a water source and protecting it from contamination through appropriate treatment and distribution.
2) Conventional drinking water treatment typically includes aeration, coagulation/flocculation, sedimentation, filtration and disinfection. It aims to remove microbes, particles, dissolved solids and other pollutants.
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Waste water treatment
- 1. Waste Water Treatment In Antibiotic Industry B. C Muthubharathi III B.Sc., Biotechnology
- 2. Antibiotic industry • Induce bacterial resistant • Threat to water bodies • Recalcitrant to biological treatment • Complicated substances
- 4. Biological treatment -Why we are preferring? • Low cost • Highly effective • No side effects • Complete treatment
- 6. Potential of Biological process • Compounds are complicated – • Organic substances • Soluble or colloidal substances • High level of solid substances • Bio toxic substances • Non Biodegradable • Bacteriostatic antibiotic
- 7. Methods available(COD removal) • Hydrolytic acidification (36% - 55%) • UABS - Upflow Anaerobic Sludge Bed reactor (80% - 90%) • SBR - Sequence Batech Reactor (80% - 85%) • BAC - Biological Activated Carbon • RBC - Rotating Biological Conductors • AOP - Advanced Oxidation Process
- 8. RBC Rotating Biological Conductor • Efficient to remove waste water even at low temperature • Preferable for Municipal and Industrial waste water treatment
- 9. INFRASTRUCUTE • 3 stages • Rotating Biodiscs • Single shaft spanning • 1st stage – 12 discs • Discs – Light weight plastic 32cm in diameter 2cm spacing from neighboring discs • Mounted on galvanized hollow metal shaft • 45% of discs submerged in liquid
- 10. Startup • Biofilms were grown naturally with activated sludge • Activated sludge was distributed evenly to the three basins • Wastewater was added into the basins at the same time • The concentration ratio of BOD5 : N : P : S in the cultivation wastewater was maintained at 100 : 5 : 1 : 1 • Disks were rotated for one day To allow microorganisms to attach to the surface of the discs. • In order to satisfy the nutrient needs of the microorganisms, 2/3 of the supernatant in the basins was replaced every day
- 11. Cont. • After one week of operation, biofilms 2-3 mm thick were formed • After the biofilms were fully formed, the RBC was run continuously • Temperature varied from 10°C to 16°C. The whole experiments lasted more than three months.
- 12. RESULT • The COD removal ratio was 70%–80% on average • Pharmaceutical wastewater was decreased from the initial 8% to 6% per day
- 13. Advantages • High concentration of microorganisms in good living and reproducing status • High efficiency for degrading organic compounds • High suitable for fluctuation in flow rate and organic concentration • Simultaneous nitrification and denitrification accompanied by carbon removal, low water content • Easy operation • Low energy consumptions • Small land area