Compact solution for leachate treatment of domestic landfills Domestic waste, being placed on landfills, contains high contamination of biodegradable organic materials. Treatment of leachate - arising from its moisture and rainfall – is difficult due to its unstable characteristics, high organic and ammonia content. Pureco provides turn-key and containerized leachate treatment units, equipped with the latest technological development with the Spacer Tube® module (ST) produced and patented by Ultura. The ST modules are the sole of the reverse osmosis technology installed after suitable pretreatment steps.
Advantages of the ST® modules
The main advantage of ST® is the large surface area of the membranes compared to the disc membranes accommodated in the same sized membrane vessels. The larger surface ensures lower membrane flux (ltr/hr/m2) at identical flow rate or the possibility pressing higher flow rate through the membrane at constant membrane flux. Due to this phenomenon the RO membrane cleaning becomes less frequent and therefore the cleaned water yield is significantly increased.
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high recovery membrane solution
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100% safety
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compact unit
Main Technological Steps of Pure-RO/LTC
• Sand filtration to remove core TSS particles
• Cartridge filtration to remove the fine TSS particles
• ST® designed in one, two or in three staged configurations depending on the required discharge parameters and influent concentrations
- RO membranes allow high organics concentration in the feed flow
- Possible to operate between 60 – 90 bar pressure placed into fiberglass housing
- Concentrate minimization at 120 bar pressure within stainless steel housing (concentrate stage)
• Instead of NaOH dosing, CO2 degassing is applied to increase the effluent pH
• Ion exchanger might be applied in order to remove the majority of the remaining ammonia and CaCO3 from the RO concentrate
- Regeneration of the raisin (filling material of the ion exchanger) is possible to be done on spot
