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Effluent treatment and sanitary landfill for a tannery complex


5 Million Litres per day Treatment Plant
For Combined Tannery Effluent Treatment Plant
For Tanneries of Calcutta Leather Complex, Calcutta


Client United Nations Industrial Development Organization[UNIDO],VIENNA
Project To estabilish the feasibility and develop and the detailed engineering and tender document
Role Consultants for the following services

1. Characterization of effluent quality
2. Introduction of Cleaner production processes
3. Design of appropriate effluent pre treatment systems at the tanneries.
4. Evaluation of mechanized sludge dewatering options.
5. Conceptual design of centralized solid waste and sludge handling.
6. Design of Sanitary Landfill for solid waste and sludge
7. Recommending cost structure for O & M cost recovery
8. Detailed Engineering design & developing specifications
9. Preparation of tender Documents to international practice
Status The assignment started in August 1997 and was completed in December 2000.
Results The criteria for the plant were as under:

Parameters BOD COD pH Chromium Sulphide Odour SS
Raw effluent 2000 4500 7.4 / 8.3 200 150 Offensive 4000
Final effluent 100 Not applied 7.4 / 7.6 2 1 Fresh 100

The design has an unique equalisation concept with excess flow skimming off to downstream units

The plant has the unique Archimedian Screw pumps to gently lift the raw effluent


This is India's first plant with integral solid wastes disposal facility using the sanitary landfill


CEC is the local Indian partner to M/S bkh Consulting Engineers, Delft, Prime consultant and M/S British Leather Center, the other partner
   

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