|
|
 |
|
Table 5.24 : Quality of
treated effluent
discharged from Jharia
Group of Collieries |
|
|
pH Limit- 5.5 to 9.0 |
TSS Limit-
100 mg/lit |
DO Limit- >5 |
BOD Limit
30 mg/lit |
COD Limit
250 mg/lit |
Oil & Grease
Limit 10 mg/lit |
|
Jamadoba (2 Pits) |
8 |
24.75 |
7.03 |
1.48 |
25.78 |
0.99 |
|
Jamadoba (3&4 Pits) |
8 |
16.18 |
7.01 |
1.7 |
71.18 |
1.07 |
|
Jamadoba 6&7 Pits |
8 |
22.36 |
6.98 |
0.93 |
35.45 |
1.28 |
|
Digwada Colliery |
8 |
28 |
7.12 |
1.68 |
44.8 |
0.89 |
Sijua Colliery
(15 Pits) |
7.05 |
20 |
6.96 |
2.48 |
49.12 |
0.85 |
Sijua Colliery
(8 Pits) |
7 |
21.57 |
7 |
1.45 |
26 |
1.1 |
Sijua Colliery
(2 Pits) |
No Discharge |
No Discharge |
No Discharge |
No Discharge |
No Discharge |
No Discharge |
|
Bhelatand Amalgamated
Colliery |
8 |
18.95 |
7.02 |
2.26 |
32.26 |
1.04 |
|
|
|
|
Effluent Management at CRC
(West)
Wastewater from the pickling and
cleaning line process was
treated with the best available
physio-chemical method. Some
portion of treated water was
used for gardening. The details
are given in Table 5.25 |
|
|
|
Table 5.25 : Effluent
details at CRC (West) |
|
|
03-04 |
04-05 |
05-06 |
|
Total quantity (m3/year) |
19598 |
19071 |
20531 |
|
Specific quantity m3/tonne
of pickling production |
0.146 |
0.128 |
0.122 |
|
Waste water from
cleaning line process |
|
Total quantity (m3/year) |
50215 |
275890 |
44685 |
|
Specific quantity m3/tonne
of cleaning pond |
0.89 |
0.48 |
0.66 |
|
|
|
|
Treated discharged water
quality at Wire Division, Mumbai
The division ensures that only treated water
is discharged into outlets. Results are
given for COD (Chemical Oxygen Demand), BOD
(Bio Chemical Oxygen Demand), Suspended
Solids, Fe (Iron) and pH. All are below
maximum permissible limits (Table 5.26). The
operations at the Wire Rod Mill involve no
water discharge. It demonstrates the
effectiveness of actions taken by the Wire
Division through investment in an Effluent
Treatment Plant. |
|
|
|
Table 5.26 : Effluent
details at Wire Division |
|
Plant |
Year |
pH
(5.5-9.0) |
TSS
(100 mg/I) |
COD
(250 mg/l) |
BOD
(30 mg/l) |
Fe
(5 mg/l) |
|
Borivilli Wire Plant |
04-05 |
7.06 |
13.8 |
72 |
16 |
1.36 |
|
05-06 |
7.1 |
12 |
55 |
10 |
1.32 |
|
Tarapore Wire Plant |
04-05 |
7.08 |
13.6 |
91 |
14 |
1.28 |
|
05-06 |
7.0 |
19 |
58 |
10 |
1.13 |
|
|
|
|
Significant spills (EN13)
There was no reported incidence of any oil
spill or chemical spillage in the
organization during the reporting period.
SUPPLIERS
Environmental Performance of suppliers
(EN33)
The environmental performance of suppliers
related to their discharges and emissions is
not captured by the organization due to
large vendor base spread all over the world.
However, stringent procedures have been laid
down under ISO-14001 for contractors working
in the premises of the organization. The
compliance to these procedures is mandatory
and punitive action is taken against
defaulters. The procedure for monitoring
contractors/suppliers compliance with labour
laws is also furnished in Section-III. |
|
|
