Page 442 - Industrial Power Engineering and Applications Handbook

1

13/41 6 Industrial Power Engineering and Applications Handbook
Inlet-1 Chemical Agitator
dosing tanks
+I q5:OlL 1500 -I 3000

0
0 0
0
0
m
0
0

0
0
0
3 m
r
c 3000 4
b A' Plan r" @oil & grease trap for toxic waste
--
Chemical To reaction @ Reaction tank for toxic waste
dosing tanks tank @ 011 & grease trap for pretreatment
Toxic
waste water
@Collection or equalization and
areration tank
0 Reaction and aeration tank for
phosphatic and acidic wastes
@)Clarification or primary
sedimentation tank
@ Polishing tank (secondary
sedimentation or storage tank)
@Sludge drying beds
Inlet-I
Chemical Section Ad' Toxic waste (strong waste from electroplating
dosing tanks shop, spray booth and spent passivation liquor)
Inlet-2
Wash water from pretreatment area and
scrubber.
Clear water
. for recycle or

To avoid overflow of tanks during rainy season,
it is advisable to keep them covered.
All dimensions are in 'mm' and just for illustration.

Section BB

pe 0 1 metre 3 metre
(suggestive)
Section CC'
Figure A13.12 Layout of a typical effluent-treatment plant