Page 70 - Energy from Toxic Organic Waste for Heat and Power Generation

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Energy from Toxic Organic Waste for Heat and Power Generation
Quantity of wastewater generated and pollution load of each step during processing 1 ton of raw material [1]
Processing operations load kg per ton raw material
Unhairing/liming Finishing Posttanning Chrome tanning Deliming and bating 1.0–2.0 1.0–1.5 1.0–2.0 1.5–2.0 4.0–6.0 0–2 6–11 5–10 8–12 53–97 0–5 24–40 7–11 13–20 79–122 0–2 8–15 2–4 5–9 28–45 – 1–2 2–5 – – – – – 0.1–0.3 3.9–8.7 – 0.3–0.5 06.-0.9 2.6–3.9 0.4–0.5 – 1–2 0.6–0.9

Soaking 9.0–12.0 11–17 22–33 7–11 – – 0.1–0.2 1–2 85–113 1–2

Table 5.1 Pollution load Waste water generated (m 3 or kiloliter) Suspended solids COD BOD Chromium Sulfides NH 3 –N Total Kjeldahl nitrogen Chlorides Sulfates