Method for relieving anaerobic ammonium oxidation system salinity shock with betaine as additive

A technology of anaerobic ammonium oxidation and betaine, which is applied in the direction of anaerobic digestion treatment, etc., can solve the problem of time-consuming oxidation of sludge, and achieve the effect of saving capital investment and operating costs, saving time and cost, and avoiding huge waste

Active Publication Date: 2015-09-16
BEIJING UNIV OF TECH
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AI Technical Summary

Problems solved by technology

Using betaine as an additive to overcome the time-consuming shortcoming of acclimating anammox sludge under saline conditions

Method used

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  • Method for relieving anaerobic ammonium oxidation system salinity shock with betaine as additive
  • Method for relieving anaerobic ammonium oxidation system salinity shock with betaine as additive

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Embodiment Construction

[0022] Now in conjunction with accompanying drawing and embodiment the present invention is further described:

[0023] like figure 1 As shown, the device consists of a raw water tank 1 and an SBR anaerobic ammonium oxidation reactor 4 connected in series. Raw water tank 1 is connected with SBR anaerobic ammonium oxidation reactor 4 through water inlet pipe and peristaltic pump 2; The lye bottle 15 and the gas flow meter 16 are connected, and further experiments can collect the gas produced by the SBR anammox reactor through the gas flow meter and analyze the gas composition. The SBR anaerobic ammonium oxidation reactor 4 is provided with a water inlet valve 3, a sampling valve 13, and a drain valve 12 from top to bottom. A temperature sensor 8 is arranged inside the reactor, and a temperature-controlled heating belt 6 is arranged on the periphery, which is connected with a temperature-controlled box 7 . The SBR anaerobic ammonium oxidation reactor is matched with a DO mete...

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Abstract

The invention relates to a method for relieving anaerobic ammonium oxidation system salinity shock with betaine as an additive. According to the invention, a successfully started anaerobic ammonium oxidation SBR reactor is used for processing salt-containing wastewater, wherein a volatile suspended sludge concentration is maintained at 6-9g/L, an inlet water NH4<+>-N concentration is 180-220mg/L, and the molar ratio of NH4<+>-N to NO2<->-N is controlled at 1:1-1:1.32 through adding (NH4) 2SO4 and NaNO2; the betaine concentration in the reactor is maintained at 0.1-5mmol/L through adding betaine; with a heating band, the temperature of the reactor is controlled at 30-35 DEG C; DO is controlled at 0-0.1mg/L; inlet water pH is stabilized at 7.0-8.5 through dropping NaOH/HCl; anoxic stirring is carried out for 4-8h after water feeding; when stirring is finished, the material is allowed to stand and to precipitate; when precipitation is finished, a supernatant is discharged. With the method provided by the invention, anaerobic ammonium oxidation activity recovery time when the anaerobic ammonium oxidation system is under salinity load shock can be effectively shortened, nitrogen removal rate can be improved, and a higher total nitrogen removal rate can be realized.

Description

technical field [0001] The invention relates to a new application of betaine, a method for alleviating high salinity inhibition in anaerobic ammonia oxidation system by using betaine as an additive. Background technique [0002] Due to human production activities, a large amount of urban sewage, industrial wastewater and agricultural sewage are discharged, which contain high nitrogen pollutants, which cause the accumulation of nitrogen in the water body, which in turn leads to eutrophication of the water body and destroys the original nature. Ecological balance and water nitrogen pollution control have become urgent problems to be solved. [0003] Biological denitrification method is the most economical and effective wastewater denitrification method, and its application is also the most extensive. The traditional wastewater biological denitrification technology mainly refers to the nitrification-denitrification process. In this process, ammonia in wastewater is oxidized t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28
Inventor 彭永臻王众王淑莹刘牡苗蕾曹天昊韩金浩张方斋
Owner BEIJING UNIV OF TECH
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