Antwerp, Belgium, september 2000
I am working in a plastic factory, and we're having a problem. We've got a lot of waste water witch contain phenol and BPA. The problem is that we have to clean the water but we don't know a good way of dowing it.
Can someone help me.
I'll send you the conditions of our process.
Now at the moment we use actiated carbon. It's a very expensive way and we are looking for an other way of cleening our waste water. The big problem is that we have to replace the activated carbon many times. We're in search of a continue method.
The waste water contains a lot of chemicals. The important are phenol and BPA. They have the highest concentrations.
Concentrations: normal production: phenol: 50 - 200ppm; BPA: 0 - 25ppm
Mal function: Phenol: 50-3000ppm; BPA: 25-3000ppm
The water is alkali: pH 8-13
Flow: 150-200 m3/h
Output requitement: less than 3ppm phenol and less than 2 ppm BPA
Online time: 24/24
Concentration of NaCl: 2 - 4 % (no bio system can handle this fluctuations)
Carbolic Acid; Benzenol, Hydroxybenzene Bisfenol-A
Mol wt 94,11 C6H5O 228,29 C15H16O2
m.p. 43 150 -159
b.p. 181,75 - 760 mm
70,86 - 10 m 220-250
Density 1,072220 20
nD 1,5509 21
Solubility Hot water ¥ Insoluble in water
Soluble in water, alcohol Very in alcohol, aceton and alkali
Very sol. in aceton Soluble in acetic acid
The waste water contains high concentrations of NaCl (and other salts in lower concentrations).
Sodium Chloride Sodium hydroxide
Mol wt 58,44 40
m.p. 130 318,4
b.p. 48 1390
Solubility 209g/100cc cold water 15°
284g/100cc hot water 50°
soluble in alcohol 42g/100cc cold water 0°
347g/100cc hot water 100° sol. in alcohol
insol in aceton
Other waste products: in low concentrations
MM = 186.2
m.p.: 274-275°C (278 °C - ontbinding)
MM = 310.44
b.p.: 277 °C
MM = 346.5
MM = 306.36
MM = 345.40
MM = 203.6
MM = 150.22
MM = 214.22
MM = 228.25
MM = 212.29
ing. Els Gijsels
Sorry, if there are written faults in it, my mother language isn't English.