Technology for treating high-salt sewage by using high salt-resistant denitrifying bacteria

Abstract

The invention relates to the technical field of high-salt sewage treatment, and especially relates to a technology for treating high-salt sewage by using high salt-resistant denitrifying bacteria. Thetechnology comprises the following steps: the high-salt sewage is discharged into a coarse screen pool and is treated, and the high-salt sewage treated with the coarse screen pool is discharged intoa fine screen pool, and is treated; and the high-salt-resistant denitrifying bacteria which are well domesticated and cultured in advance are added to sludge to prepare activated sludge. Denitrifyingbacteria are directionally domesticated to make the denitrifying bacteria have high salt resistance, the high salt-resistant denitrifying bacteria are used to prepare the activated sludge and an active bio-filler, and the activated sludge and the active bio-filler are respectively used to treat the high-salt sewage in order to effectively reduce nitrites in the high-salt sewage to generate harmless nitrogen, so harms of the nitrites are eliminated, the nitrogen nutrition is consumed, excessive multiplication of algae is inhibited, water is purified, and pathogenic bacteria are inhibited.

Description

technical field [0001] The invention relates to the technical field of high-salt sewage treatment, in particular to a process for treating high-salt sewage with high-salt-resistant denitrification bacteria. Background technique [0002] High-salt wastewater refers to wastewater with a total salt content of at least 1%, which mainly comes from chemical plants and oil and natural gas collection and processing. Salt wastewater is produced in a wide range of ways, and the amount of water is increasing year by year. The salt in sewage will promote the excessive reproduction of algae, aggravate the pollution of water body, and promote the rapid reproduction of pathogenic bacteria, which will have a serious impact on the environment. The physical and chemical treatment method requires large investment and high operating costs, and it is difficult to achieve the expected results. The purification effect is treated by biological method. High-concentration salt substances have an inh...

AI Technical Summary

Problems solved by technology

The salt in sewage will promote the excessive reproduction of algae, aggravate the pollution of water body, and promote the rapid reproduction of pathogenic bacteria, which will have a serious impact on the environment. The physical and chemical treatment method requires large investment and high operating costs, and it is difficult to achieve the expected results. The purification effect is treated by biological method. High-concentration salt substances have an inhibitory effect on microorganisms, and the treatment effect is not ideal. Therefore, a process for treating high-salt sewage with high-salt-resistant denitrification bacteria is needed to meet the demand.