Water treatment method for simultaneously eliminating dissolved organic matters and ammonia nitrogen

A dissolved organic matter and water treatment technology, applied in the field of water treatment, can solve the problem that water treatment methods cannot remove dissolved organic matter and ammonia nitrogen at the same time, achieve the effects of reducing chemical consumption and energy consumption, enhancing treatment efficiency, and reducing transformation costs

Inactive Publication Date: 2013-08-14
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problem that the water treatment method cannot simultaneously remove dissolved organic matter and ammonia nitrogen, and provides a water treatment method for simultaneously removing dissolved organic matter and ammonia nitrogen

Method used

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  • Water treatment method for simultaneously eliminating dissolved organic matters and ammonia nitrogen
  • Water treatment method for simultaneously eliminating dissolved organic matters and ammonia nitrogen

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specific Embodiment approach 1

[0009] Specific Embodiment 1: This embodiment is to solve the problem that the water treatment method cannot remove dissolved organic matter and ammonia nitrogen at the same time, and provides a water treatment method for simultaneously removing dissolved organic matter and ammonia nitrogen.

[0010] A water treatment method for simultaneously removing dissolved organic matter and ammonia nitrogen, which is carried out through the following steps: adding an oxidizing agent to the water sample to be treated, and then irradiating ultraviolet light for 2 to 60 minutes to complete the water treatment for simultaneously removing dissolved organic matter and ammonia nitrogen The method; wherein the oxidizing agent is hypochlorous acid or sodium hypochlorite, and the dosage is according to the mass ratio of chlorine element to nitrogen element in the water sample to be treated (0.5-6): 1.

[0011] This implementation mode couples photocatalysis and chlorine oxidation technology to str...

specific Embodiment approach 2

[0012] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the ultraviolet light is a low-pressure mercury lamp or a high-pressure mercury lamp, the wavelength range is 254-375nm, and the ultraviolet dose is 20-2400mJ / cm 2 . Others are the same as the first embodiment.

specific Embodiment approach 3

[0013] Embodiment 3: This embodiment is different from Embodiment 1 or Embodiment 2 in that: ultraviolet light is irradiated for 15-45 minutes. Others are the same as those in Embodiment 1 or 2.

[0014] Prove the beneficial effect of the present invention by following test:

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Abstract

The invention discloses a water treatment method for simultaneously eliminating dissolved organic matters and ammonia nitrogen, relates to a water treatment method, and aims at solving the problem that dissolved organic matters and ammonia nitrogen cannot be simultaneously eliminated by using a water treatment method. The water treatment method comprises the following steps of: adding an oxidant into a water sample to be treated, and subsequently carrying out ultraviolet irradiation, and reacting for 2-60min so as to accomplish the water treatment method for simultaneously eliminating the dissolved organic matters and the ammonia nitrogen, wherein the oxidant is hypochlorous acid or sodium hypochlorite, and the addition amount is on the basis that the mass ratio of the chlorine element to the nitrogen element in the water sample to be treated is (0.5-6):1. According to the water treatment method, photocatalysis is coupled with an oxychlorination technique, so that the treatment performance on a composite polluted water body is enhanced, and the dissolved organic matters and the ammonia nitrogen in water are effectively and simultaneously eliminated. The water treatment method is applied to the field of water treatment.

Description

technical field [0001] The invention relates to a water treatment method. Background technique [0002] The phenomenon that the concentration of dissolved organic matter and ammonia nitrogen exceeds the standard in water bodies in my country is common. Conventional water treatment processes are poor in removing dissolved organic matter and ammonia nitrogen at the same time. These pollutants will cause a series of water pollution problems, such as reducing the water treatment process. Treatment efficiency, the production of disinfection by-products that are harmful to human health, affecting the biological stability of the water supply network, and causing eutrophication of surface water bodies, etc. At the same time, the improvement of water quality standards has put forward higher technical requirements for the simultaneous removal of dissolved organic matter and ammonia nitrogen in drinking water and wastewater. [0003] The methods for simultaneous removal of dissolved or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/76C02F1/32C02F101/30
Inventor 李伟光张欣然任鹏飞
Owner HARBIN INST OF TECH
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