Method and experimental method for controlling haloacetonitrile by using phosphate-reinforced biological activated carbon

A technology of biological activated carbon and experimental method, which is applied in the field of phosphate-enhanced biological activated carbon to control haloacetonitrile, can solve the problems of high N-DBPs, etc., and achieve the effects of promoting removal, avoiding phosphorus pollution, and small dosage

Active Publication Date: 2021-12-07
SHANGHAI UNIV
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Problems solved by technology

[0004] However, in recent years, a small number of studies have begun to report that the microbial metabolites inside the black box of the drinking water bioactivated carbon

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  • Method and experimental method for controlling haloacetonitrile by using phosphate-reinforced biological activated carbon
  • Method and experimental method for controlling haloacetonitrile by using phosphate-reinforced biological activated carbon
  • Method and experimental method for controlling haloacetonitrile by using phosphate-reinforced biological activated carbon

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Embodiment Construction

[0036] The following descriptions are only preferred embodiments of the present invention, and do not limit the protection scope of the present invention. The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0037] Examples, see Figure 1 to Figure 4 Shown:

[0038] A method for controlling haloacetonitrile with phosphate enhanced biological activated carbon, comprising the steps of:

[0039] S1: Add river water to the biological activated carbon filter.

[0040] S2: Add disodium hydrogen phosphate solution into the biological activated carbon filter, stir evenly, and react in the dark for 12 hours.

[0041] Wherein, as the first embodiment of the dosing concentration of the disodium hydrogen phosphate solution, the dosing concentration of the disodium hydrogen phosphate solution is 0.3 mg / L. Since the river water itself contains certain phosphate radicals, phosphoric acid is added in the biological activated ...

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Abstract

The invention discloses a method and an experimental method for controlling haloacetonitrile by using phosphate-reinforced biological activated carbon. The method for controlling haloacetonitrile by using phosphate-reinforced biological activated carbon comprises the following steps: S1, adding surface water into a biological activated carbon filter tank; S2, adding a phosphate solution into the biological activated carbon filter tank, uniformly stirring, and reacting in a dark place for a period of time; and S3, discharging surface water in the biological activated carbon filter tank and performing chlorine disinfection treatment, wherein the addition concentration of the phosphate solution in the step S2 is 0.2-0.7 mg/L. Compared with the prior art, the method has the advantages that the phosphate solution is added into the biological activated carbon filter tank, so that the microbial action of the biological activated carbon can be enhanced, the generation amount of microorganism EPS in a biological membrane on the biological activated carbon is reduced, the removal of DOC in the surface water by the biological activated carbon is promoted, and thus the generation potential of the nitrogen-containing disinfection by-product haloacetonitrile is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of drinking water treatment, in particular to a method and an experimental method for controlling haloacetonitrile with phosphate-enhanced biological activated carbon. Background technique [0002] Disinfection is usually the next process of the biological activated carbon process. Chlorine is widely used because it is cheap, easy to transport and store, has a good bactericidal effect, and can completely oxidize odorous substances. However, people detect it in water after disinfection. Conventional disinfection by-products such as trihalomethanes and haloacetic acids, and studies have shown that after chlorine disinfection, nitrogen-containing disinfection by-products that are more harmful to the human body will be produced, and their toxicity is 30-80 times that of carbon-containing disinfection by-products. Therefore, halogen-acetonitrile As a typical nitrogen-containing disinfection by-product, it has att...

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Application Information

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IPC IPC(8): C02F9/14
CPCC02F3/34C02F1/50C02F1/76C02F2003/003C02F2203/006C02F2209/18C02F2209/22C02F2209/21
Inventor 王菲菲张露胡玉琳潘加郑李子如
Owner SHANGHAI UNIV
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