Aromatic, polyaromatic and halogenated hydrocarbons in ground water can be found in lower concentrations dissolved in water diffused over the area, or concentrated as DNAPLs (dense non-aqueous-phase liquids) or LNAPLs (light non-aqueous-phase liquids) creating an enduring source of contaminant supply to the water phase.
MPPE benefits for meeting challenges in this segment are:
- Ideal for handling a broad range of compositions
- Able to cope with unexpected higher influent compositions at no additional costs
- No iron removal necessary (anaerobic process)
- Robust, can withstand e.g. salts, humic acids, surfactants, heavy metals, dissolved/suspended solids, high/low pH etc.
- No sludge formation (as with iron removal and biotreatment)
- Scope for combination with other ground- and process water streams in one unit
- DNAPL and LNAPL removal by solvent or surfactant enhanced aquifer remediation (SEAR)
- Surfactant or alcohol injection enhances the dissolution of chlorinated hydrocarbons, PAHs, DNAPLs and LNAPLs in water from a few ppm to 10,000 – 50,000 ppm
- Organics recovered in two weeks equaled eight years of normal pump and treat
- MPPE proven as the ideal separation technology for these extremely high concentrations in surfactant/alcohol water mixtures
- Surfactant/solvent consumption savings as MPPE enables recirculation and recovery
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