Circle-sequence reverse osmosis deionization apparatus

Abstract

Proposed is a circle-sequence reverse osmosis deionization apparatus which basically guarantees a high recovery rate by adopting closed-circuit reverse osmosis technology, reduces fouling by sequentially applying backward reverse osmosis technology, and performs highly efficient water treatment without a separate energy recovery device. An example of the circle-sequence reverse osmosis deionization apparatus is configured such that each of a plurality of forward reverse osmosis (RO) modules and at least one backward RO module are connected in parallel, wherein brine discharged from the plurality of forward RO modules is fed into the at least one backward RO module, and the brine discharged from the at least one backward RO module is fed into each of the plurality of forward RO modules.

Dependencies are inferred from the claim text.