The invention relates to a method for
reverse osmosis enriched water by
microwave treatment. The method comprises the following steps: adding a process additive,
ferrous sulfate and
polyaluminium chloride into the
reverse osmosis enriched water to perform the pretreatment; putting the pretreated enriched water into a
microwave processor from the lower part of the
microwave processor and taking out the pretreated enriched water from the middle and upper part of the microwave processor so as to ensure that the process additive, the
ferrous sulfate and the
polyaluminium chloride perform adequate physical and chemical reactions with the enriched water; guaranteeing that the yielding water of the microwave processor flows into a
precipitation filtering unit automatically to realize stable drainage reaching the standards; and branching
sludge to cause part of the precipitated
sludge to be pumped back to the pretreatment reaction for recycling, and dehydrating the ineffective or residual
sludge into dry sludge. The method is applicable to
processing various organic waste water or
mixed waste water which takes COD and heavy
metal as the main
pollutant and is hard to biodegrade; the method has the advantages of simple technical processes, convenient control, low treatment cost and less occupied space; in addition, the method fills in the domestic gap of the method for
processing the new
reverse osmosis enriched water generated in the recycling process of
reclaimed water, and has good popularization value.