Method for quickly relieving activity inhibition of heavy metals on anaerobic ammonia oxidation sludge

An anaerobic ammonia oxidation and activity inhibition technology, applied in chemical instruments and methods, sludge treatment, water/sludge/sewage treatment, etc., can solve the problems of cell membrane damage, long recovery time, and complex heavy metal-containing wastewater components To achieve the effect of improving denitrification activity and alleviating the inhibitory effect

Active Publication Date: 2015-03-25
HANGZHOU NORMAL UNIVERSITY
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Problems solved by technology

Moreover, the composition of heavy metal-containing wastewater is complex, and there are complex interactions between heavy metals and between heavy metals and other inhibitors (enhancement, addition, irrelevance, antagonism), which will have acute toxic effects on microorganisms in the short term, and some heavy metals will also be long-term. Accumulate in microorganisms, destroy cell membrane, inhibit enzyme activity
[0005] In the existing research on the recovery of microorganisms inhibited by heavy metals, the strategies adopted mainly include pretreatment, pH, FA, influent substrate concentration, load, inhibitor concentration, sludge acclimatization, strain feeding, etc., which are targeted Disadvantages such as weak, long recovery time, and inconspicuous recovery effect

Method used

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  • Method for quickly relieving activity inhibition of heavy metals on anaerobic ammonia oxidation sludge
  • Method for quickly relieving activity inhibition of heavy metals on anaerobic ammonia oxidation sludge
  • Method for quickly relieving activity inhibition of heavy metals on anaerobic ammonia oxidation sludge

Examples

Experimental program
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Embodiment 1

[0026] refer to figure 1 The flow shown is a test for rapidly activating the activity of heavy metal-contaminated anammox sludge.

[0027] Test sludge: taken from an upflow anaerobic sludge bed reactor (effective volume 1.0L, sludge concentration 20gVSS / L) operated in a constant temperature room at 35°C for a long time, when the final concentration of copper ions is 5mg / L, 8mg / L, 10mg / L, and 12mg / L were operated for two weeks, and the final total nitrogen removal rate (NRR) was 0.05kgN m -3 d -1 .

[0028] Take the mud and wash it with deionized water for 5 times, measure 10ml of the washed sludge (copper ion content is 15.7gCu / gSS) with a graduated cylinder, add it to a serum bottle with a stopper, add 110ml of cleaning solution, and use 2M dilute hydrochloric acid and 1M NaOH Adjust the pH of the aqueous solution to 7.40-7.60. Fill the serum bottle with argon gas for deoxygenation for 10 minutes, seal it, then place it in a constant temperature shaker at 35°C, shake it ...

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Abstract

The invention discloses a method for quickly relieving activity inhibition of heavy metals on anaerobic ammonia oxidation sludge. The method comprises the following steps: washing the anaerobic ammonia oxidation sludge polluted by heavy metals by distilled water, adding the washed sludge into a closed container, adding a cleaning liquid with the pH value being 7.4-7.60, and introducing argon to remove oxygen and closing; then, putting into a constant temperature table at 30-35 DEG C and oscillating the table in the shade at a speed of 150-200rpm; and finally, centrifugalizing the oscillated mud-water mixture and taking the precipitate, namely the anaerobic ammonia oxidation sludge which relieves heavy metal inhibition. The method disclosed by the invention can be used for effectively relieving the inhibitory effect of heavy metals on anaerobic ammonia oxidation sludge, effectively removing heavy metals adsorbed to the surface of sludge and quickly improving the denitriding activity of anaerobic ammonia oxidation bacteria.

Description

(1) Technical field [0001] The invention relates to a method for improving the activity of anaerobic ammonium oxidation sludge, in particular to a method for rapidly alleviating the inhibitory effect of heavy metals on the activity of anaerobic ammonium oxidation sludge. (2) Background technology [0002] In recent years, excessive discharge of ammonia-containing wastewater has caused a series of ecological and environmental problems such as eutrophication of water bodies. The efficient and low-consumption treatment of ammonia-containing wastewater has always been a difficult problem in the field of sewage treatment. [0003] The ANAMMOX process has become one of the most economical new biological nitrogen removal processes due to its advantages of no need for additional organic carbon sources, high denitrification load, low operating costs, and small footprint. After more than 20 years of research and application, ANAMMOX technology has been successfully applied in the fie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C02F101/20
CPCC02F11/00C02F2101/20
Inventor 金仁村张正哲吴聪慧程雅菲布阿依·阿姆古丽周煜璜
Owner HANGZHOU NORMAL UNIVERSITY
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