Method for effectively removing COD from polluted water

Abstract

The invention discloses a method for effectively removing COD from polluted water. The method comprises the following steps: 1, selecting florae composed of 5-15 parts of pseudomonas, 15-25 parts of Bacillus spp, 5-10 parts of acinetobacter, 5-10 parts of nitrobacteria, 10-15 parts of denitrifying bacteria, 10-20 parts of microzyme and 10-15 parts of photosynthetic bacteria; 2, directly inoculating a medium with the florae according to an inoculation amount of 1% (w / v), and activating bacterial strains at 37 DEG C under 120 rpm for 16 h to make the total strain quantity be greater than 10<9> CFU / ml; and 3, adding 0.05-0.1% of a mixed bacterial liquid formed by the activated florae to polluted water to be treated. The microbial florae applied to the invention have high adaptability, and can effectively remove the COD pollutants in the polluted water, and the removal rate reaches 90% or above; and the method has the advantages of reduction of the content of ammonia nitrogen, total nitrogen and total phosphorus in water, deodorization and turbidity reduction effects, inhibition of growth and breeding of harmful bacteria, and substantial water purifying effect in order to recover the self-cleaning ability of water.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a method for effectively removing COD from polluted water. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. [0003] COD (Chemical Oxygen Demand) is a chemical method to measure the amount of reducing substances that need to be oxidized in a water sample. The oxygen equivalent of substances (generally organic matter) that can be oxidized by strong oxidants in wastewater, wastewater treatment plant effluent and polluted water. In the study of river pollution and the nature of industrial wastewater and the operation and management of wastewater treatment plants, it is an important and quickly measured organic pollution parameter, often expressed by the symbol COD. [0004] With the rapid development of my country's economy and the acceleration of urbaniza...

AI Technical Summary

Problems solved by technology

[0006] The key to using microbial remediation to treat polluted water is to increase the number and activity of functional microorganisms in the water. The current common method is to add microbial growth activators to rapidly multiply the functional microorganisms in the water, or to add high-concentration functional microorganisms The former microbial growth activator activates functional microorganisms and multiplies non-functional microorganisms at the same time, and the final effect is often not good; the method of adding high-concentration functional microbial flora can quickly reduce water COD, but the current trend The unreasonable ratio of the types and concentrations of microbial flora added to polluted water may result in poor treatment effects and may also cause secondary pollution