BVT-Merkblatt zu Abwasser- und Abgasbehandlung

BVT-Merkblatt zu Abwasser- und Abgasbehandlung BVT-Merkblatt zu Abwasser- und Abgasbehandlung

bvt.umweltbundesamt.de
von bvt.umweltbundesamt.de Mehr von diesem Publisher
06.12.2012 Aufrufe

Annexes Rain and cooling water Process water Entry tank / pre-neutralisation Lime milk preparation Sedimentation tank Neutralisation Step 1 Step 2 GAC filter Thickener Aeration 1 Clarifier 1 Aeration 2 Clarifier 2 Sludge basin Sludge dewatering Return to aeration 1 Sludge recycling 1 Sludge recycling 2 Excess sludge 1 Air compressor Pure oxygen Abbildung 7.6: Central Waste Water Treatment for a Chemical Site Producing Pharmaceuticals, Pesticides Storage tank 20000 m 3 Excess sludge 2 344 Waste Water and Waste Gas Treatment Biocarb carrier biology

7.6.4 Examples of Heavy Metal Discharges [cww/tm/160] Annexes The following Tabelle 7.3 contains the concentrations of heavy metals from 23 waste water discharges. The values given are yearly averages of 24 hours mixed samples; the ones in brackets are the highest values found. The concentrations are achieved at the final discharge point, after treatment at source, without dilution with rainwater or cooling water. They depend on the share of heavy metals in the total waste water mix. Waste Water and Waste Gas Treatment 345

7.6.4 Examples of Heavy Metal Discharges<br />

[cww/tm/160]<br />

Annexes<br />

The following Tabelle 7.3 contains the concentrations of heavy metals from 23 waste water<br />

discharges. The values given are yearly averages of 24 hours mixed samples; the ones in brackets<br />

are the highest values fo<strong>und</strong>. The concentrations are achieved at the final discharge point,<br />

after treatment at source, without dilution with rainwater or cooling water. They depend on the<br />

share of heavy metals in the total waste water mix.<br />

Waste Water and Waste Gas Treatment 345

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