Biochemical treatment process for high salinity wastewater

Abstract

The invention discloses a biochemical treatment process for high salinity wastewater. In order to solve the problem of treating high salinity wastewater with relatively low operating cost and total investment, the biochemical treatment process for high salinity wastewater comprises the following steps: 1) obtaining halotolerant bacteria and attaching the halotolerant bacteria on filler in a reactor; 2) preparing simulated wastewater; 3) acclimatizing the halotolerant bacteria, wherein the simulated wastewater is mixed with the high salinity wastewater in different proportions to prepare various acclimatizing wastewater, and in the starting process of the reactor, the halotolerant bacteria are acclimatized by virtue of the various acclimatizing wastewater according to a sequence of the content of the simulated wastewater in the acclimatizing wastewater from high to low, so that the starting time of the reactor is shortened; 4) directly treating the high salinity wastewater by virtue of the acclimatized halotolerant bacteria. By virtue of acclimation and culture combined with a biological multiplying technology, the halotolerant bacteria are maximized in quantity, specialized in flora and efficient in degrading capability, so that organic pollutants in water are effectively degraded.

Description

technical field [0001] The invention relates to a high-salt wastewater biochemical treatment process, which belongs to the field of industrial wastewater treatment. Background technique [0002] The crisis of fresh water resources has become a "bottleneck" restricting the economic and social development of my country's coastal areas. It is urgent to solve the crisis of fresh water resources in coastal areas. At the same time, with the development of industry, the discharge of high-salinity industrial wastewater is also increasing rapidly. High salinity wastewater is one of the most difficult types of wastewater to treat. At present, the treatment methods used for high-concentration wastewater include: electrolysis, membrane separation, incineration or deep well injection, but these methods are difficult to popularize in practice due to high treatment costs. Biological treatment is one of the most commonly used methods for wastewater, which has the characteristics of wide ...

AI Technical Summary

Problems solved by technology

[0003] Therefore, the biological treatment of high-salt wastewater usually needs to be diluted and operated at a low salt concentration (salt concentration less than 1%), resulting in waste of water resources, huge treatment facilities, increased investment, and increased operating costs

With the increasing tension of water resources, the implementation of various laws and regulations and charging measures issued by the state to protect water resources has brought economic burdens to enterprises that treat high-salt wastewater.

Images