| New technology is applied in design of a new French chemical plant | France | 1993 | Full scale |
MANUFACTURE OF CHEMICALS AND CHEMICAL PRODUCTS # 12
Background
The firm HEXACHIMIE built a new pharmaceuticals production plant to complete a unit already existing in TONNEINS. The principles of clean technology were applied. This case study was carried out in 1993.
Cleaner Production Principle
New technology
Cleaner Production Application
Information about the process and wastes
The new unit would discharge 1,5 tons/day of COD, 600 kg/day of BOD and 15 tons/day of salts if it followed the traditional design.
The synthesis workshop of a derivative of nicotinic acid discharges 1600 m3/year of parent liquors, which are purified in order to be reused.
This treatment consists of 2 stages :
| Alkalisation of acid effluents; settling of an organic phase and conveyance of the settled water to the following phase; distillation and recycling of the organic product. |
| Distillation of the water settled during the first phase and recycling for the cooling process; crystallization of the concentrated salts and chipping and sanitary landfill. |
Costs of direct investment
| Concentration unit | 5 880 000 |
| Other equipment | 1 950 000 |
| Electricity - Regulation | 1 000 000 |
| Pipes and miscellaneous | 2 120 000 |
| Engineering | 500 000 |
| Total amount | 11 450 000 FF (1993) |
Cost of the raw materials required for the treatment :
| Former process | 9 700 000 |
| New process | 5 800 000 FF (1993) |
Environmental and Economic Benefits
| Former design | New design | |
| COD | 1.5 tons/day | 0 |
| Salts | 12 tons/day | 0 |
| Phosphate | 200 kg/day | 0 |
| Volume of effluents | 200 m3 process water | 0 |
| 2800 m3 dilution water | 0 |
No more liquid industrial wastes and removing the salinity (6500 tons/year) avoids any biological treatment of wastewater and washing water which go to the treatment plant separately.
Constraints
None reported.
Contacts
Review Status
This case study was submitted to UNEP IE in 1994 by the French Office International de l'Eau.
Subsequently the case study has undergone a technical review by Dr Prasad Modak at Environmental Management Centre, Mumbai, India, in September 1998.