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Method for removing ammonia nitrogen, nitrogen nitrate and nitrogen nitrite in water synchronously

A technology of nitrite nitrogen and nitrate nitrogen, which is applied in the field of synchronous removal of ammonia nitrogen, nitrate nitrogen and nitrite nitrogen in water, and can solve problems such as inability to apply drinking water treatment, simultaneous removal of "three nitrogens", complex operation and inability to operate , to achieve the effect of convenient management, economical operation, and reduction of emission concentration

Inactive Publication Date: 2012-10-31
HARBIN INST OF TECH
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  • Claims
  • Application Information

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Problems solved by technology

[0011] The present invention aims to solve the technical problems that the existing methods for removing ammonia nitrogen, nitrate nitrogen and nitrite nitrogen in water are complex in operation, unable to simultaneously remove "three nitrogens", may cause secondary pollution, and cannot be applied to drinking water treatment. Provide a method for simultaneous removal of ammonia nitrogen, nitrate nitrogen and nitrite nitrogen in water

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  • Method for removing ammonia nitrogen, nitrogen nitrate and nitrogen nitrite in water synchronously
  • Method for removing ammonia nitrogen, nitrogen nitrate and nitrogen nitrite in water synchronously
  • Method for removing ammonia nitrogen, nitrogen nitrate and nitrogen nitrite in water synchronously

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specific Embodiment approach 1

[0029] Embodiment 1: A method for synchronously removing ammonia nitrogen, nitrate and nitrite in water according to this embodiment is: first adjust the pH value of the water body to be treated to 3-11, and adjust the dissolved oxygen content to 0.1 mg / L- 40mg / L, and then treated with ultraviolet light with a wavelength of 150nm to 260nm.

[0030] The method for synchronously removing ammonia nitrogen, nitrate nitrogen, and nitrite nitrogen in water in this embodiment uses ultraviolet light with a wavelength of 150 nm to 260 nm to realize synchronous removal of ammonia nitrogen, nitrate nitrogen, and nitrite nitrogen. It has the following advantages: Removing "three nitrogen" does not require multi-stage removal; does not require expensive oxidants and catalysts; does not require adsorbents such as activated carbon that are prone to secondary pollution; can use ordinary and cheap ultraviolet light sources; can quickly remove water The "three nitrogens", the method of the pres...

specific Embodiment approach 2

[0031] Embodiment 2: This embodiment is different from Embodiment 1 in that: the pH value of the water body to be treated is adjusted to 4-10. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0032] Embodiment 3: This embodiment is different from Embodiment 1 in that: the pH value of the water body to be treated is adjusted to 8. Others are the same as in the first embodiment.

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Abstract

A method for removing ammonia nitrogen, nitrogen nitrate and nitrogen nitrite in water synchronously. The invention relates to a method for removing ammonia nitrogen, nitrogen nitrate and nitrogen nitrite in water synchronously. Through the invention, the technical problems that nitrogen in three forms can not be removed synchronously through the existing method removing ammonia nitrogen, nitrogen nitrate and nitrogen nitrite in water and the existing method is complex in operation and can produce a secondary pollution thus can not be utilized in drinking water treatment are solved. In the invention, water needing to be treated is subjected to a PH adjusting process and a dissolved oxygen control process, and then is radiated by ultraviolet light with a wavelength in the range of 150 to 260 nm. The method can remove ammonia nitrogen, nitrogen nitrate and nitrogen nitrite synchronously without multistage removal, expensive oxidizing agents and catalysts, no secondary pollution and no subsequent process, and show the characteristics of safety, convenience, economy and high efficiency while removing nitrogen in three forms. Therefore, the method can be utilized for treatments of underground water, drinking water, water discharged from sewage treatment plants, industrial water and domestic water, and the remediation of natural water body.

Description

technical field [0001] The invention relates to a method for removing ammonia nitrogen, nitrate nitrogen and nitrite nitrogen in water. Background technique [0002] Ammonia nitrogen exists widely in the effluent of industrial wastewater, and the large-scale use of chemical fertilizers in agriculture will also cause non-point source pollution of ammonia nitrogen. Ammonia nitrogen in water bodies will cause eutrophication of lakes and rivers, and cause harm to the natural ecological environment of water bodies and aquaculture. At the same time, ammonia nitrogen can also corrode and block pipes and water equipment. High concentrations of ammonia nitrogen can react with chlorine, a water treatment disinfectant, which greatly increases the amount of water disinfectant and produces a disgusting smell. Ammonia nitrogen and other components in water will be converted into nitrite nitrogen and nitrate nitrogen under certain conditions, which will affect the safety of drinking water...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/32C02F1/58
Inventor 马军岳思阳李旭春关英红陈丽玮刘桂芳
Owner HARBIN INST OF TECH
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