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RE: Hydrogen sulphide removal using chemical scrubbers

HForbes — Thu, 10 Jan 2008 08:38:18 GMT

We also add a polyphosphate canister to the water line. This has nothing to do with the buildup, but will make it much easier to clean.

RE: Hydrogen sulphide removal using chemical scrubbers

zaffrulla — Wed, 09 Jan 2008 08:22:05 GMT

hai ,
thanks for the reply pls be informed that we already installed softeners for hardness removal but unfortunately they are all under designed ,as the number of plants are more than 8 the client is not willing to install new softener units ( huge investments) instead go for potable water for which consumption quantity is vital
hence pls give me out other soulution ie cals to find out the design consumption
zaffrulla

RE: Hydrogen sulphide removal using chemical scrubbers

HForbes — Wed, 09 Jan 2008 07:56:43 GMT

In the States, we, Siemens offer service agreements for scrubbers. One of the first things we do is add a water softener to heavily loaded units, to reduce the buildup in the scrubber. Over dosing with bleach will add to the problem of scaling as well.

Hydrogen sulphide removal using chemical scrubbers

zaffrulla — Wed, 09 Jan 2008 02:31:18 GMT

Members,

We are running a municipal waste water treatment plant in abudhabi, for odor control we use chemical scrubbers ( US FILTERS -Now SIEMENS) up to the primary treatment , the chemicals we use are Sodium hypochlorite , Caustic soda.Our H2S levels inlet to the scrubbers are an avagf 250 ppm , we get 98% removal efficiency It is cocontinuouslow and we use NON potable water for dilution.
Can any one tell me what are standard requirements for the NPW consumption , we think that we are using excess NPW if there are standards for this water consumption we are planning to go for Potable water which has less hardness than our NPW which is very HARD.
Is there any relation ship between the inlet H2S levels and the water consumption
We can see that the scrubbers are performing to its maximum but we face the problem of scaling in the media due to this HARD water hence we are planning to switch over to potable water ( less hardness ).As the potable water is expensive in these regions we would like to know the exact requirement based on the H2S levels ?!!!
regards
zaffrulla