COLOUR REMOVAL OF MOLASSES BASED
EFFLUENT BY CHEMICAL AND MEMBRANE TECHNOLOGY

PLANT PARAMETERS
Capacity, m3per day	800
No.of Shifts / day	3
Working days / Yr	300
Total Land Area, m2	4000
Covered Area, m2	1800
MANPOWER
Managerial	5
Engineers	2
Skilled	8
Unskilled	8
Total	23
RAW MATERIAL
Lime, TPD		4
Alum 100 % , TPD		4
Poly-electrolyte, Kg/day		8
UTILITIES
Power, Kwh/day	4000
Process water, M^3/day	400 (recycled back)
Dilution water, M^3/day	400
PLANT & MACHINERY
Reactor	Clarifier
Reverse Osmosis unit	Centrifuge
Filtration units	Tanks

The present distillery and other industries like the Tanneries, Pigment & Dye industries are facing the problem of treating their effluents to remove the colour in addition to TDS, COD, BOD. The present methods being used like extended aeration, concentration by evaporation etc require vast areas & high power. The patented technology developed at Malladi Project Management and Research Centre Pvt. Ltd., Chennai, India, pertains to the treatment of effluent to produce permeate water, where the colour of the effluent having a psychological impact on the public is removed. This can be used as process water, thus creating a Zero pollution atmosphere & is Eco-friendly. The quality obtained also conforms to the standards of the Pollution Control Board.

Process
Major Operational Steps Involved :

• Pre treatment of the effluent
• Clarification of pre treated effluent
• Pre filtration of clarified effluent
• Ultra filtration

Characteristics

	Inlet	Outlet
TPS	200 to 400 ppm	Nil
TDS	9000 to 10000 ppm	< 2100 ppm
COD	3500 to 4500 ppm	< 250 ppm
BOD	400 to 500 ppm	< 30 ppm
pH	7.5 to 8.5	7 to 7.5
Colour	Brown	Near Colourless
Electrical conductivity	-	300-500 micro mho
^0Brix		Nil

Process Advantage

• The latest world class technology.
• The water recovered from the treatment process conforms to the norms of CPCB/ state PCB’s
• The water will be suitable for reuse in the plant
• The land requirement for the treatment plant is very small
• Zero pollution atmosphere & Eco-friendly
• The sludge can be used for briquetting, reclaiming the acid soil & land filling.
• Designed to meet the varying parameters of the input effluent.
• Commercial plant already in operation.

Block Flow Diagram

Scale of Development

A pilot plant having capacity of 80 lit of feed/batch of effluent has been carried out for a period of 6 months.

BENEFITS

• Operating cost on process water substantially reduced
• Land saving otherwise used for lagoons etc.
• Concentrate sludge used for Bio-earth production.

NRDC

National Research Development Corporation, a Government of India Enterprise, is a premier technology Transfer Corporation with over four decades of experience. It has helped establish over one thousand projects in the small and medium scale sector.

Services offered by NRDC

• Process know-how
• Pre-investment studies
• Feasibility / project reports
• Detailed engineering
• Turn key projects
• Equity capital participation
• Training in operation of plants
• Raw materials and products testing

NATIONAL RESEARCH DEVELOPMENT CORPORATION
(A Government of India Enterprise)
20-22, Zamroodpur Community Centre,
Kailash Colony Extension, New Delhi-110 048. (INDIA)
Fax +91 11 29240409/29240410/29230506 Tel +91 11 29240401 to 29240408
E Mail: write2@nrdcindia.com
Web Site : www.nrdcindia.com