Membrane system to treat leachate and methods of treating leachate

A recursive concentrate reduction membrane system, comprising:

• a first stage including two or more reverse osmosis membranes in fluidic communication and connected in series, wherein the system is configured to introduce a leachate to the first stage, wherein the first stage is configured to separate the leachate into a first stage concentrate and a first stage permeate;
• a second stage including two or more reverse osmosis membranes in fluidic communication and connected in series, wherein the first stage and the second stage are in fluidic communication, wherein the system is configured to introduce the first stage permeate to the second stage, wherein the second stage is configured to separate the first stage permeate into a second stage concentrate and a second stage permeate, wherein the second stage is configured to operate at about 300 psi or less pressurized;
• a filter in the first stage to prefilter the leachate prior to introduction to the first stage reverse osmosis membranes;
• a filter in the second stage to prefilter the first stage permeate prior to introduction of the first stage permeate to the second stage reverse osmosis membranes;
• and
• a collection tank, wherein the collection tank is configured to store leachate from the leachate source and the second stage, wherein the system is configured so that the liquid inflow is adjusted to maintain a dilution factor within a tank stock that optimizes system performance.