industrail waste water for sugar cane industry
DESCRIPTION
This PPT gives the information about manufacturing process of sugar and various waste that are produced during the process and treatment for the waste before the disposal or for safe disposal with flow diagramsTRANSCRIPT
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INDUSTRIAL WASTEWATER TREATMENT
ofSUGARCANE INDUSTRY
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CONTENTS
Introduction
Manufacturing Process
Source of Waste Water and Characteristics of
the Waste
Effects of the Waste on Receiving Water
Treatment of the Wastes
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INTRODUCTION In countries like Cuba, Jamaica, and India, the
sugar is produced from sugarcanes, while in many other places beetroots are used as the raw material for the sugar production.
A large volume of waste of organic nature is produced during the period of production, and normally they are discharged onto land or into the nearby water courses, usually small streams, practically without treatment.
Putrefaction of the polluted stream water caused by the heavy discharge of organic waste, resulting in the odour nuisance near sugar mills is a very common phenomenon.
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MANUFACTURING PROCESS
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SOURCE OF WASTE WATER AND CHARACTERISTICS OF THE WASTE
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Characteristics Mill house waste
Filter cloth washings
Condenser water
Boiler house & floor
washings
Combined waste(excluding condenser
water
Rate of flow, litres per tonne of cane
crushed 730 360 1640 230 -
pH 6.7 9.5 - 7.2 4.6-7.1
COD,mg/l - - - - 600-4380
BOD, mg/l(5 days, 200c) 210 1765 - 5150 300-2000
Total Solids, mg/l 1760 6970 - 5130 870-3500
Total Volatile Solids,mg/l - - - - 400-2000
Total Suspended Solids,mg/l 910 4000 - 120 220-800
Total Nitrogen,mg/l - - - - 10-40
COD/BOD ratio - - - - 1.3-2.0
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EFFECTS OF THE WASTE ON RECEIVING WATER
The fresh effluent from the sugar mill decomposed rapidly after few hours of stagnation.
It has been found to cause considerable difficulties when their effluent gets an access to the water courses, particularly the small and non perennial stream in rural areas.
The rapid depletion of oxygen due to biological oxidation followed by anaerobic stabilization of the waste causes a secondary pollution of offensive colour, balck colour, and fish mortality.
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TREATMENT OF WASTES
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