Case study #265
1. Headline: New technology is applied in design of a new
French chemical plant.
2. 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.
3. Cleaner Production Principle: New technology
4. Description of 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
purificated in order to be reused.
This treatment consists of 2 stages :
--Alkalization 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 concentrate's salts and chipping and sanitary
landfill.
Material / energy balance and substitution
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
5. Economics:
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)
Operation and maintenance costs
Cost of the raw materials required for the treatment :
Former process 9 700 000
New process 5 800
000 FF (1993)
6. Advantages: 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.
7. Constraints: No information provided.
8. Contacts:
Agence de l'Eau Adour-Garonne
M. GARIADOR
TEL: 33 61.36.37.38
M. PILLION
HEXACHIMIE S.A.
Z.I. Laville
47240 BON-ENCONTRE - France
TEL: 33 53.69.13.00
FAX : 33 53.69.13.10
M. Maton
M. Chatenet
Office International de l'Eau
Direction de la Formation et des Etudes
rue Edouard Chamberland
87065 Limoges Cedex, France
TEL: 33 55114770
FAX: 33 55777115
9. Keywords: ISIC 3522, France, chemical, pharmaceutical,
new technology, COD, BOD, salt, acid, alkalization,
distillation
10. This case study was submitted to UNEP IE in 1994 by the
French Office International de l'Eau. It has not undergone
a formal technical review.