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A method for two-stage resins to strengthen each other to remove organic matter and nitrate nitrogen in wastewater

An organic matter, nitrate nitrogen technology, applied in chemical instruments and methods, water pollutants, multi-stage water treatment, etc., can solve the problems of poor nitrate nitrogen removal effect, poor anti-pollution performance of resin, etc. performance, avoid frequent replacement of resin, improve the effect of removal

Active Publication Date: 2020-03-20
NANJING UNIV YANCHENG ENVIRONMENTAL PROTECTION TECH & ENG RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Aiming at the problems that current ion exchange resins have poor removal effect on nitrate nitrogen in waste water, simultaneous removal of organic matter and nitrate nitrogen cannot be realized, and poor anti-pollution performance of the resin, the present invention provides a method for removing organic matter and nitrate nitrogen in water with uniform removal rate. Resin combination method that is higher and improves the anti-pollution performance of the resin

Method used

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  • A method for two-stage resins to strengthen each other to remove organic matter and nitrate nitrogen in wastewater
  • A method for two-stage resins to strengthen each other to remove organic matter and nitrate nitrogen in wastewater
  • A method for two-stage resins to strengthen each other to remove organic matter and nitrate nitrogen in wastewater

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Effect test

Embodiment 1

[0038] The waste water of the present embodiment is the waste water from the biochemical treatment process, and the steps of the waste water treatment are:

[0039] (1) Primary resin adsorption: Firstly, the waste water flows through the acrylic basic anion exchange resin at a flow rate of 1BV / h for adsorption treatment, and the water inflow is 50BV; the resin is usually installed in the adsorption column, and the solution passes through continuously; the resin The volume of resin loaded in the column is called the bed volume, abbreviated as BV, so it means that the volume of wastewater is 50 times the volume of the resin bed; the flow rate of the solution through the resin column is 1BV / h, that is, the volume of wastewater passing through the resin bed per hour is the volume of the resin bed 1 times.

[0040] The resin described in the primary resin adsorption is a macroporous acrylic strong base anion exchange resin, the model is D213, from Jiangsu Suqing Water Treatment Eng...

Embodiment 2

[0053] The waste water of the present embodiment is the waste water from the biochemical treatment process, and the steps of the waste water treatment are:

[0054] (1) First-level resin adsorption: firstly, the waste water flows through the acrylic acid series basic anion exchange resin for adsorption treatment at a flow rate of 2BV / h. It is a strong base anion exchange resin, model IRA458, from Rohm and Haas Company. The resin volume filled in the primary resin adsorption column is 20mL, and the height-to-diameter ratio of the primary resin adsorption column is 1:4.

[0055] (2) Secondary resin adsorption: the waste water after step (1) treatment flows through styrene series strong base anion exchange resin with the flow rate of 5BV / h and further carries out adsorption treatment; Described styrene series strong base anion exchange resin is Synthesized according to the method disclosed in the application of Chinese Patent No. CN201610910673.X, the patent name is "A High Densi...

Embodiment 3

[0064] The waste water of the present embodiment is the waste water from the biochemical treatment process, and the steps of the waste water treatment are:

[0065] (1) Primary resin adsorption: firstly make the waste water flow through the acrylic acid series basic anion exchange resin for adsorption treatment with a flow rate of 3BV / h, the waste water flow rate is 80BV for the water inflow; the resin described in the primary resin adsorption is large Porous acrylic series strong base anion exchange resin, the model is VPOC1074, from Bayer Company, the amount of resin filled in the primary resin adsorption column is 12mL, and the height-to-diameter ratio of the primary resin adsorption column is 1:3.

[0066] (2) Secondary resin adsorption: the waste water after step (1) treatment flows through styrene series strong base anion exchange resin with the flow rate of 5BV / h and further carries out adsorption treatment; Described styrene series strong base anion exchange resin is S...

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Abstract

The invention discloses a method for removing organic matters and nitrate nitrogen in wastewater by enabling two stages of resin to reinforce each other, belonging to the technical field of water treatment. The method comprises the following steps: (1) enabling the wastewater subjected to biochemical reaction to flow through acrylic basic anion exchange resin for carrying out treatment; (2) enabling the wastewater subjected to the treatment of the step (1) to flow through styrene strong base anion exchange resin for carrying out treatment; (3) enabling the wastewater subjected to the treatment of the step (2) to flow back and enter to the step (1) and the step (2) for treating again; (4) carrying out resin regeneration, specifically, enabling a regenerated solution to firstly flow through the styrene strong base anion exchange resin for eluting, and then enabling a desorbed solution to flow through the acrylic basic anion exchange resin for eluting. The method has a better removal effect for the organic matters and the nitrate nitrogen in water body, meanwhile, can realize better anti-organic pollution performance, and is low in cost, simple to operate and beneficial to popularization.

Description

technical field [0001] The invention belongs to the field of waste water treatment and relates to a waste water treatment method, in particular to a method in which two-stage resins strengthen each other to remove organic matter and nitrate nitrogen in waste water after biochemical treatment. Background technique [0002] With the improvement of the economic level and the acceleration of the modernization process, environmental pollution problems follow one after another. Among them, the pollution of nitrate nitrogen in the water environment is becoming more and more serious, which exceeds the self-purification ability of nature, which in turn leads to the problem of nitrate nitrogen pollution in the water environment on a global scale. Nitrate nitrogen is the most common pollution factor in groundwater and a huge threat to drinking water safety. Studies have shown that after nitrate is ingested into the human body, it has the risk of causing a series of diseases such as hu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/42C02F101/30C02F101/16
CPCC02F1/42C02F2001/422C02F2101/16C02F2101/30C02F2301/08
Inventor 刘莉莉双陈冬李爱民戴建军周庆周伟伟张洋阳
Owner NANJING UNIV YANCHENG ENVIRONMENTAL PROTECTION TECH & ENG RES INST