A method for efficient treatment of nitrogen-containing wastewater based on dissimilatory reduction of nitrate to ammonium combined with denitrification coupled with anaerobic ammonium oxidation

A technology of anaerobic ammonium oxidation and nitrate, which is applied in anaerobic digestion treatment, chemical instruments and methods, natural water treatment, etc., can solve the problems of weakening single treatment effect, achieve low COD and low temperature tolerance, and operate Simple, copy-enrichment-obvious effects
CN108328730BActive Publication Date: 2021-03-02SHANDONG UNIV
4 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG UNIV
Publication Date
2021-03-02

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a method for treating nitrogen-containing wastewater based on dissimilation reduction of nitrate to ammonium combined with denitrification coupling anaerobic ammonium oxidation. The method includes the step of adding aerobic activated sludge to an anaerobic membrane bioreactor; The wastewater to be treated is fed into the anaerobic membrane bioreactor to realize the synchronous enrichment steps of DNRA bacteria, denitrifying bacteria and anammox bacteria; Nitrogen removal from wastewater. The invented method simultaneously presents denitrification, anammox, and DNRA combined denitrification process in the late stage of the process of enriching and cultivating DNRA, which greatly improves the low COD and low temperature tolerance of anaerobic ammonium oxidizing bacteria, making DNRA bacteria, anti Nitrifying bacteria and anammox bacteria play their respective advantages in the same environment, which can greatly improve the denitrification efficiency and the utilization rate of organic matter.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a method for treating nitrogen-containing wastewater based on dissimilatory reduction of nitrate to ammonium combined with denitrification coupled with anaerobic ammonium oxidation, and belongs to the technical field of wastewater microbial treatment. Background technique

[0002] Some industrial wastewater contains high concentrations of nitrate nitrogen and nitrite nitrogen, and contains a large amount of organic matter, which is highly polluted wastewater that is strictly prohibited by the state. High-concentration nitrate nitrogen wastewater flows directly into rivers and lakes, polluting surface water and groundwater, leading to the death or even extinction of aquatic animals and plants. If the surrounding residents use surface water or groundwater polluted by nitrate and nitrite as domestic water, it will seriously harm Good health affects the rapid and harmonious development of the local economy.

[0003] The traditiona...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More