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Integrated adsorption and desorption solution application method for removing total nitrogen pollutants in wastewater

A technology for desorbing liquid and pollutants, which is applied in the fields of water pollutants, water/sewage treatment, chemical instruments and methods, etc. It can solve the problems of poor stability, lack of technology, and low temperature resistance, so as to reduce production, efficiently remove, Achieve the effect of the overall green process

Active Publication Date: 2022-04-12
NANJING INNOVATION CENT FOR ENVIRONMENTAL PROTECTION IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a method for removing total nitrogen pollutants in wastewater by integrating adsorption and desorption solution in order to solve the problems of lack of technology, low temperature resistance, and poor stability in existing wastewater total nitrogen removal.
The desorption liquid obtained from the regeneration of the saturated resin is used as a regeneration agent for the saturated zeolite, and the regenerated resin and zeolite are recycled; in the present invention, through the recycling of the adsorbent, the application of the regeneration agent and the green resource treatment, the total nitrogen of the wastewater is realized. The removal of total nitrogen effectively solves the problems of existing wastewater total nitrogen removal, such as lack of technology, low temperature resistance, poor stability, etc.

Method used

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  • Integrated adsorption and desorption solution application method for removing total nitrogen pollutants in wastewater

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Embodiment 1

[0031] The method of the integrated adsorption and desorption solution for removing total nitrogen pollutants in wastewater in this embodiment is carried out according to the following steps:

[0032] A. Resin adsorption process, that is, the waste water to be treated with a total nitrogen concentration of 100mg / L is passed into the resin reactor, and the water flow rate is adjusted so that the hydraulic load is 6m 3 / (m 2 h), the adsorption time is 15min, and the total nitrogen concentration in the effluent of the resin reactor is 40mg / L;

[0033] B. Zeolite adsorption process, that is, the effluent of the resin reactor is passed into the zeolite reactor, and the flow rate of the influent water is adjusted so that the hydraulic load is 5m 3 / (m 2 h), the adsorption time is 15min, and the total nitrogen concentration in the effluent of the zeolite reactor is 15mg / L;

[0034] C. Saturated resin regeneration process, that is, the adsorbed and saturated resin in the resin reac...

Embodiment 2

[0039] The method of the integrated adsorption and desorption solution for removing total nitrogen pollutants in wastewater in this embodiment is carried out according to the following steps:

[0040]A. Resin adsorption process, that is, the waste water to be treated with a total nitrogen concentration of 80mg / L is passed into the resin reactor, and the water flow rate is adjusted so that the hydraulic load is 4m 3 / (m 2 h), the adsorption time is 30min, and the total nitrogen concentration in the resin reactor effluent is 30mg / L;

[0041] B. Zeolite adsorption process, that is, the effluent of the resin reactor is passed into the zeolite reactor, and the flow rate of the influent water is adjusted so that the hydraulic load is 3m 3 / (m 2 h), the adsorption time is 30min, and the total nitrogen concentration in the effluent of the zeolite reactor is 12mg / L;

[0042] C. Saturated resin regeneration process, that is, the adsorbed and saturated resin in the resin reactor is di...

Embodiment 3

[0047] The method of the integrated adsorption and desorption solution for removing total nitrogen pollutants in wastewater in this embodiment is carried out according to the following steps:

[0048] A. Resin adsorption process, that is, the waste water to be treated with a total nitrogen concentration of 50mg / L is passed into the resin reactor, and the water flow rate is adjusted so that the hydraulic load is 3m 3 / (m 2 h), the adsorption time is 45min, and the total nitrogen concentration in the effluent of the resin reactor is 20mg / L;

[0049] B. Zeolite adsorption process, that is, the effluent of the resin reactor is passed into the zeolite reactor, and the flow rate of the influent water is adjusted so that the hydraulic load is 2m 3 / (m 2 h), the adsorption time is 45min, and the total nitrogen concentration in the effluent of the zeolite reactor is 10mg / L;

[0050] C. Saturated resin regeneration process, that is, the saturated resin in the resin reactor is dischar...

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Abstract

The invention relates to a method for removing total nitrogen pollutants in waste water by integrating adsorption and desorption liquid. The purpose of the method is to provide an integrated adsorption and desorption liquid method for removing total nitrogen pollutants in waste water with green resources and good stability. The method of the present invention for removing total nitrogen pollutants in wastewater by integrated adsorption and desorption liquid includes, the preparation method of the present invention includes the following steps: resin adsorption process; zeolite adsorption process; saturated resin regeneration process; saturated zeolite regeneration process; Attached liquid resource treatment process. The integrated adsorption and desorption liquid method for removing total nitrogen pollutants in waste water of the present invention removes total nitrogen pollutants in the form of nitrate nitrogen through the selective adsorption of resin to nitrate nitrogen in waste water; Selective adsorption of ammonia nitrogen in wastewater to remove total nitrogen pollutants in the form of ammonia nitrogen. The invention is used in the field of waste water treatment.

Description

technical field [0001] The invention belongs to the field of waste water treatment, and in particular relates to a method for removing total nitrogen pollutants in waste water by using an integrated adsorption and desorption solution. Background technique [0002] In recent years, the eutrophication of water bodies has been greatly accelerated due to the excessive discharge of some plant-based nutrient elements such as nitrogen into water bodies. At present, the common total nitrogen removal processes are divided into biological methods and physical chemical methods. Biological nitrogen removal methods include biochemical nitrification and denitrification technology, membrane bioreactor (MBR) technology, moving bed biofilm reactor (MBBR) technology, etc.; Nitrogen removal methods include breakpoint chlorine addition method, air stripping method, etc. [0003] Biochemical nitrification and denitrification technology refers to the process in which nitrifying bacteria oxidize ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04C01D3/04C02F101/16
CPCC01D3/04C02F1/281C02F1/42C02F2101/16C02F2101/163
Inventor 姜笔存曲艳南于伟华宋均轲王强陈达胡海兰谈政焱
Owner NANJING INNOVATION CENT FOR ENVIRONMENTAL PROTECTION IND