A treatment system for resource utilization and zero discharge of high-salt and high-organic waste water

Abstract

The invention discloses a high-salt and high-organic-matter wastewater resource utilization and zero-discharge treatment system, comprising a regulating tank, an integrated aerobic granular sludge membrane bioreactor, a membrane distillation unit and an evaporation crystallization unit. The regulating tank stabilizes the water quality and quantity and precipitates part of the suspended matter, the integrated aerobic granular sludge membrane bioreactor removes most of the suspended matter and organic matter in the wastewater, and the membrane distillation unit removes ions and some remaining organic matter in the waste water, evaporates and crystallizes The unit treats membrane distillation concentrated water, evaporates and recovers water resources, crystallizes and recovers salt solids in membrane distillation concentrated water, and finally realizes the purpose of high-salt and high-organic wastewater water resources and salt resources recycling and zero discharge of wastewater. The invention can effectively solve the problem of resource utilization and zero discharge of high-salt and high-organic waste water, recycle water resources and salt resources to the greatest extent, and simultaneously realize zero discharge in the production process of high-salt and high-organic matter, and has important environmental benefits.

Description

technical field [0001] The invention relates to the field of industrial wastewater treatment, in particular to a treatment system for resource utilization and zero discharge of high-salt and high-organic waste water including shale gas waste water. Background technique [0002] The development of industrialization has brought a large amount of high-salt and high-organic waste water, such as shale gas waste water produced in the process of shale gas exploitation. The concentration of COD can be as high as 8000mg / L, and the range of TDS can reach 88-300g / L. Among them, Ca 2+ The concentration can reach 41g / L, Na + The concentration can be as high as 136g / L, Cl - The concentration is as high as 200g / L. [0003] High-salt and high-organic waste water is difficult to treat with conventional biological treatment technology, and the high cost and high membrane pollution in the process of membrane technology also inhibit the recovery and utilization of high-salt and high-organic ...

AI Technical Summary

Problems solved by technology

[0003] High-salt and high-organic waste water is difficult to treat with conventional biological treatment technologies, and the high cost and high membrane pollution in the process of membrane technology also inhibit the recovery and utilization of high-salt and high-organic waste water. How to design a reasonable treatment method to recover high-salt The water resources and salt resources in high-organic wastewater have become a hot spot in the world to achieve the goal of zero discharge and resource utilization.

Images