The invention discloses a treatment method of high
saline wastewater, and relates to the treatment technology. The method comprises the following steps: preparing high
saline wastewater, regulating in a regulating pond, chemically pre-treating in a
settling pond, filtering in a V-shaped filter pond, the first section
ion exchange
softening, ultrafiltering in an
ultrafiltration system,
reverse osmosis treating through a first section
reverse osmosis system, the second
ion exchange
softening, nano-filtering through a high-pressure nano-
filtration system, nano-filtering to produce water,
reverse osmosis treating through a second section reverse
osmosis system, concentrating through a first section high-pressure flat film system, MVR evaporating and crystallizing to obtain the industrial level
sodium chloride; nano-filtering to concentrate water, concentrating through a second section
high pressure flat film system, freezing and crystallizing to obtain the industrial level
mirabilite. The ultra-
filtration, the nano-
filtration, the reverse
osmosis and high-pressure flat film methods are reasonably coupled to combine with the MVR
crystallization and freezing
crystallization to treat the high
saline wastewater, the defect of single technology is overcome, the combination
advantage is developed, the problems of efficiently and economically treating and recycling the high saline wastewater can be solved, and the treatment method has obvious economic benefit and social benefit.