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Content with label chemical-methods in REBEL WP8: Biotechnology (See content from all spaces)
Related Labels: sample, wastewater-treatment, biotechnology, phosphor, simultaneous-precipitation, stabilization, sludge, waste-water, sewage-treatment-plants, bacteria, decontamination, narrative-text, precipitation, figure, postprecipitation, chemicals, testing, filtration

Page: 1. Upstream precipitation
Pdeficit should be avoid in the activation basin (otherwise e.g. bulking sludge rebwp8:Bulking sludge can occur). \\ \\ !UBT484PVorfällung.jpg border=1
Other labels: figure, phosphor, biotechnology, sewage-treatment-plants, precipitation, wastewater-treatment, waste-water
Page: 2. Simultaneous precipitation
Chemicals are directly added tot he activation basin (or tot he return sludge) simultaneously with the biological degradation P rebwp8:3 Biological P removal is removed (up to > 85%). \\ \\ !UBT485PSimultane Fällung.jpg border=1
Other labels: figure, phosphor, simultaneous-precipitation, biotechnology, sewage-treatment-plants, wastewater-treatment, waste-water
Page: 2 Chemical P removal
P is precipitated out as phosphate by adding Fe or Al salts. Disadvantages here are the costs for the precipitant and the salting of the water (more Cl, SO4\ in the outflow). Acidic precipitation salts (such as FeCl{}3) result in consumption of hardness and therefore reduced buffer capacity ...
Other labels: figure, narrative-text, phosphor, biotechnology, precipitation, wastewater-treatment, waste-water
Page: 3. Downstream precipitation
Flocculation is poor because of lacking solids. \\ \\ !UBT486PNachgeschaltete Fällung.jpg border=1
Other labels: figure, phosphor, postprecipitation, biotechnology, sewage-treatment-plants, wastewater-treatment
Page: 4. Flocculation filtration
method very low Pconcentrations are possible. \\ \\ !UBT487PFlockungsfiltration.jpg border=1
Other labels: figure, phosphor, filtration, biotechnology, sewage-treatment-plants, precipitation, wastewater-treatment, waste-water
Page: Addition of chemicals
Organisms rebwp8:Organisms in the waste water are killed by lime (pH increase) (with CaO in addition to temp. increase). Addition of CaO When added to dehydrated sludge the lime/sedimentation sludge mixture heats up with sufficient heat insulation to 5570°C ...
Other labels: narrative-text, chemicals, biotechnology, sewage-treatment-plants, decontamination, sludge, wastewater-treatment, waste-water
Page: Chemical stabilisation
takes place by addition of lime (pH>10), as a result of which the bacteria rebwp8:Bacteria present in the sludge are inactivated. This type of stabilisation is usually just a temporary solution
Other labels: narrative-text, stabilization, biotechnology, sewage-treatment-plants, bacteria, wastewater-treatment, waste-water
Page: Storability (methylene blue test)
time\ This test indicates whether a water sample goes putrid after being left for a relatively long time (5 d). The redox indicator methylene blue (0.5 g/l) is dark blue when O{}2 is present in the sample ...
Other labels: sample, narrative-text, testing, biotechnology, wastewater-treatment, waste-water
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