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Method for enhancing anammox activity by adding manganese dioxide

A kind of anammox bacteria, anaerobic ammonium oxidation technology, applied in the field of strengthening the activity of anammox bacteria, can solve the problems of easy loss, long doubling time of anammox bacteria, low cell yield, etc., to increase the operating load Effect

Inactive Publication Date: 2018-07-10
HANGZHOU NORMAL UNIVERSITY
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Problems solved by technology

In view of the long doubling time of anammox bacteria, the low cell yield, easy loss, sensitivity to environmental conditions, and the disadvantages of being easily inhibited by various pollutants have become an important bottleneck for its promotion and application.

Method used

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  • Method for enhancing anammox activity by adding manganese dioxide
  • Method for enhancing anammox activity by adding manganese dioxide

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Embodiment 1

[0021] In continuous flow, an upflow anaerobic sludge bed reactor with an effective volume of 1 L (such as figure 1 ), taking the activity as 250gTN·g -1 VSS·d -1 The anaerobic ammonium oxidation granular sludge is inoculated sludge to contain NH 4 + -N and NO 2 - -N simulated wastewater is influent, and adding inorganic salt buffer to maintain microbial growth and trace elements I and trace elements II to adjust the operation of the reactor, in anaerobic, dark, temperature 35±1°C, influent The sludge was cultivated under the conditions of pH 7.75 and hydraulic retention time 0.96h. Among them, the simulated wastewater composition: NH 4 + -N 280mg·L -1 , NO 2 - -N 280mg·L -1 , the solvent is tap water; the final concentration composition of the inorganic salt buffer solution in the simulated wastewater: KH 2 PO 4 10mg·L -1 , CaCl 2 2H 2 O 5.6mg·L -1 , MgSO 4 ·7H 2 O 300mg·L -1 , KHCO 3 1250mg·L -1 Add 1.25mL each of trace element I and trace element II ...

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Abstract

The invention provides a method for enhancing anammox activity by adding manganese dioxide. The method includes: adopting an upflow anaerobic sludge bed reactor, taking anaerobic ammonium oxidation granule sludge as the inoculation source, taking simulation wastewater containing ammonia nitrogen and nitrite nitrogen as the influent water, also adding an inorganic salt buffer solution and trace elements maintaining microorganism growth, after stable operation under anaerobic and dark conditions with a temperature of 35+ / -1DEG C, an influent water pH of 7.70-7.80, and a hydraulic retention timeof 0.9-1.0h, adding manganese dioxide into the influent water of the reactor in a phased increasing way, performing culture until the activity of the reactor sludge is 2.4-2.6 times that of inoculatedsludge, thus completing culture. The anaerobic ammonium oxidation granule sludge culture by the method provided by the invention has the advantages of high activity, good nitrogen removal performance, high microorganism concentration and the like.

Description

(1) Technical field [0001] The invention relates to a method for strengthening the activity of anaerobic ammonium oxidizing bacteria, in particular to a method for strengthening the activity of anaerobic ammonium oxidizing bacteria by adding manganese dioxide powder. (2) Background technology [0002] The ANAMMOX process is considered to be an innovative and promising biological nitrogen removal process due to its advantages of less sludge production, no need for additional organic carbon sources, less greenhouse gas emissions, low operating costs, and high nitrogen removal efficiency. [0003] Anammox bacteria are ubiquitous in various natural environments such as marine sediments, inland lakes and agricultural soils, especially manganese oxides, because of their special physical and chemical properties such as large specific surface area and high reactivity, they are considered to be in Marine sediments play an important role in the nitrogen cycle. The redox process of ma...

Claims

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Application Information

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IPC IPC(8): C02F3/28
CPCC02F3/2846C02F2305/06
Inventor 金仁村徐佳佳程雅菲胥莲曾籍季政权朱颖红
Owner HANGZHOU NORMAL UNIVERSITY
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