Possible solutions for ...

Possible solutions for hydrogen sulphide removal

Dear Anita

How much water has to be treated?

Generally I can see following possibilities:

1. Sulfides, such as other inorganic compounds are easily oxidable. Thereby sulfate will be produced. You need 4 Mol O3 for 1 Mol Sulfide. The reaction is as follows: S2- + 4O3 = SO42- + 4O2 

Treatment would include:

- Ozone generator
- Piping
- Domeaerators
- Residual ozone destruction
- Tanks
- Valves, metering devices and automation

2. You could use granulate (catalyticly acitve) filter medium, with high manganese oxide content. This filter medium is normally used for iron and manganese removal as well as hydrosulphides.

This kind of treatment would be a lot cheaper and also easier to maintain.

If you send us a sample of your water, we can try it out, having some of these filter media at hand in our laboratory.

3. You apply a lot of chemicals. Iron chemical produces a disgusting, stinking, black  sludge, which has to be disposed of properly. Chlorine has already been discussed in other answers. I wouldn't go for this option if I was to produce drinking water...

Best regards

Christoph
WABAG Water Technology Ltd., Switzerland