Table 1 Wastewater Quality in the Different Applied Peeling Methods in Potato Processing Plants

Potato peeling method

Parameters

Abrasiona

Steamb

Lyec

Flow (gal/ton, raw

600

625

715

potato)

BOD

20 lb/ton (4000 ppm)

32.6 lb/ton (6260 ppm)

40 lb/ton (6730 ppm)

COD

52.2 lb/ton (10,000

65.7 lb/ton (11,000 ppm)

ppm)

Total solids

53.2 lb/ton (10,200

118.7 lb/ton (20,000

ppm)

ppm)

Volatile solids

46.8 lb/ton (9000ppm)

56.4 lb/ton (9500 ppm)

Suspended solids

90 lb/ton (18,000

26.8 lb/ton (5150 ppm)

49.7 lb/ton (8350 ppm)

ppm)

pH

5.3

12.6

aWaste quality in a dehydration plant [5]. bWaste quality in a potato flour plant [6]. cWaste quality in a potato flake plant [6]. Source: Refs 5 and 6.

aWaste quality in a dehydration plant [5]. bWaste quality in a potato flour plant [6]. cWaste quality in a potato flake plant [6]. Source: Refs 5 and 6.

What The Diagram Potato Chip
Figure 1 Typical potato chip plant (from Ref. 3).

prior to frying. After frying, the free fat is removed on a shaker screen and by hot air stream. The fries are then frozen and packed. Figure 2 is a flow diagram of the French fry process [3].

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