Membrane system and treatment method for resource recovery and zero emission of manganese-containing wastewater and application of membrane system

Abstract

The invention discloses a membrane system and a treatment method for resource recovery and zero emission of manganese-containing wastewater and the application of the system. The membrane system for resource recovery and zero emission of manganese-containing wastewater comprises a microfiltration membrane device, a nano-filtration membrane device A, a seawater desalination membrane device and a nano-filtration membrane device B, wherein a circulation loop is formed by sequentially connecting the microfiltration membrane device, the nano-filtration membrane device A and the sea water desalination membrane device; and another circulation loop is formed by sequentially connecting the microfiltration membrane device, the nano-filtration membrane device A and the nano-filtration membrane device B. The system is an all-process filtering separation system, and replaces the traditional plate-and-frame filter press with the microfiltration membrane device, thus better improving the filtering effect; in the whole system, the four membrane devices are connected together in a way of series connection or parallel connection, so that the circulation loops can be formed; the system can continuously operate; the service life of a membrane is longer; the membrane can not be polluted, and membrane holes are not blocked after the membrane is used for a long time; the operation cost is low; the system is beneficial to sustainable development of an enterprise; and the treatment method is simple and easy, and resource recovery and zero-emission can be realized.

Description

technical field [0001] The invention belongs to the technical field of waste water treatment, and in particular relates to a manganese-containing waste water resource recovery and zero-discharge membrane system and its treatment method and application. Background technique [0002] There are about 213 manganese mining areas in my country, with reserves of 560 million tons, ranking second in the world. They are distributed in 21 provinces, municipalities, and autonomous regions across the country, mainly concentrated in Southwest Guangxi, the Hunan-Guizhou-Sichuan Triangle, and Zunyi, Guizhou , Liaoning Chaoyang region, southeastern Yunnan region, central Hunan region, Yongzhou-Daoxian region of Hunan Province and Hanzhong-Dabashan region of Shaanxi Province, the total reserves of manganese ore in these 8 regions are 463 million tons, accounting for 82% of the total reserves in the country. It is an important raw material base for my country's current and future manganese minin...

AI Technical Summary

Problems solved by technology

Due to the cumbersome operation and high operating costs, it is difficult for enterprises to ensure that the wastewater is stable and up to standard, and it is easy to cause membrane pollution and blockage of membrane pores, thereby increasing the aeration volume and pump suction head, requiring large investment in facilities and high operating costs, which is not conducive to the development of enterprises sustainable development

The manganese in the wastewater is converted into the form of waste residue, which is also mixed with a large amount of Fe(OH) produced during the treatment process 3 and CaSO 4 Impurities such as manganese are difficult to be reused, resulting in a waste of manganese resources

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