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Prantner - Pyrolusite Filter Material for Catalytic Deferrisation and Demanganisation in Water Treatment
For catalytic deferrisation / demanganisation to a concentration of 8 mg / liter in water Prantner recommends the filter material pyrolusite. Pyrolusite acts as an insoluble catalyst and accelerates the reaction between dissolved oxygen and iron compounds. Pyrolusite acts as a catalyst between oxygen and soluble iron compounds and produces iron hydroxide which precipitates out and is easily filtered. Because of its physical properties Pyrolusite is an excellent filter material that simply needs to be cleaned by periodically back-flushing the unit. After the material has been flushed it is once again ready to use.Because pyrolusite is not used up during the deferrisation it offers an economic advantage compared to other deferrisation-materials. Further advantages are that there is very little material lost due to abrasion, use in a wide temperature range and also that no chemicals are required to regenerate it.
Pyrolusite can be used as a filter material for demanganisation with the same confidence as it is for deferrisation. For concentrations that exceed 8 mg/l we recommend precipition/ flocculation systems (see below).
Prantner precipitation / sedimentation systems with following sedimentation and filtration stages of type FFS + for the removal of dissolved substances via addition of chemicals during operation.
The process or ground water that contains the dissolved pollutants or trash substances (e.g. iron or manganese) is firstly dosed with the corresponding chemicals for operation. A reaction occurs which causes heavy, barely soluble compounds to form. Addition of further chemicals (e.g. flocculants) allows these to transform into a separable form. The separation occurs in a sedimentation tank, the remaining turbidity is removed from the water in sand or multi-layered filters.
As well as providing the technology to treat the contaminated water, we are also able to process the resulting sludge. The compounds from the sedimentation are collected into a sludge accumulation vessel and conditioned with further chemicals. This sludge is then sent to a chamber filter press or a centrifuge for dewatering. The resulting solid filter cake can then be taken for disposal. We are happy to draw up a disposal concept and take on the disposal if desired. Request an offer.
