4.4 Electronic Crystal Subcategory
Table 4.54 presents the degree of effluent reduction attainable by the application of
the best available technology (BAT) economically available for the electronic crystal
subcategory which any existing point source must achieve.
The effluent limitations for the electronic crystal subcategory representing the
degree of effluent reduction attainable by the application of the best practicable
control technology currently available (BPT) are listed in Table 4.55.
Any existing source of the electronic crystal subcategory that introduces pollutant
into a Publicly Owned Treatment Work (POTWs) must base its treatment on the
pretreatment standards for existing sources (PSES) as stated in Table 4.56.
The new source performance standard (NSPS) for the electronic crystal
subcategory is documented in Table 4.57, which any new source must comply with.
The degree of effluent reduction attainable by the application of the best conventional pollution control technology (BCT) currently available for the electronic
crystal subcategory is given in Table 4.58.
5 Pollution Prevention Case Studies
Pollution prevention programs that are most successful involve looking for opportunities “beyond the barrels.”
Table 4.54 Electronic crystals BAT effluent limitations
Pollutant
One day (mg/L)
Monthly average (mg/L)
Total toxic organic
1.37
Not applicable
Arsenic
a (T)
2.09
0.83
Fluoride (T)
32.00
17.40
Source: [26]
a The arsenic limitation only applies to manufacturers of gallium or indium arsenide crystals
Table 4.55 Electronic crystals BPT effluent limitations
Pollutant
One day (mg/L)
Monthly average (mg/L)
Total toxic organic
1.37
Not applicable
Arsenic
a (T)
2.09
0.83
Fluoride (T)
32.00
17.40
Total suspended solids, TSS
61.00
28.00
pH
6.00–9.00
6.00–9.00
Source: [26]
4 Electrical and Electronic Wastes Treatment
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