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Method for quickly starting CANON nitrogen removal process

A rapid start-up, NO2--N technology, applied in chemical instruments and methods, aerobic and anaerobic process treatment, water/sludge/sewage treatment, etc., can solve the problem of demanding seed sludge, slow start-up, and long start-up period and other problems, to achieve the effect of effectively cutting air bubbles, fast film formation, and good film formation

Active Publication Date: 2017-01-25
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above method has a long start-up period of the reactor, slow start-up, and strict requirements for seed mud

Method used

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  • Method for quickly starting CANON nitrogen removal process
  • Method for quickly starting CANON nitrogen removal process
  • Method for quickly starting CANON nitrogen removal process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Activated sludge and anammox sludge were used as inoculation sludge for inoculation, in which the inoculation of anaerobic ammonium oxidation sludge was about 1L, and its MLSS was 9200mg / L. The activated sludge inoculation of domestic sewage is about 2L, and the MLSS is 6000mg / L. After the two sludges are mixed, they are added from the top of the reactor. The test water is artificially simulated carbon-free wastewater with high ammonia nitrogen, and the synthetic wastewater mainly provides NH 4 + -N, macro and trace elements for microbial growth and phosphorus, by addition of NaHCO 3 Adjust pH. NH 4 + -N concentration maintained at 200mg / L, NO 2 - -N concentration maintained at 0-110mg / L, NaHCO 3 The concentration is maintained at 1700mg / L, and argon gas is introduced into the water tank to mix evenly, and the dissolved oxygen in the water is removed at the same time.

[0048] The reactor is made of plexiglass, mainly including a reaction zone and a three-phase...

Embodiment 2

[0053] Activated sludge and anammox sludge were used as inoculation sludge for inoculation, in which the inoculation of anaerobic ammonium oxidation sludge was about 1L, and its MLSS was 9200mg / L. The activated sludge inoculation of domestic sewage is about 2L, and the MLSS is 6000mg / L. After the two sludges are mixed, they are added from the top of the reactor. The test water is artificially simulated carbon-free wastewater with high ammonia nitrogen, and the synthetic wastewater mainly provides NH 4 +-N, macro and trace elements for microbial growth and phosphorus, by addition of NaHCO 3 Adjust pH. NH 4 + -N concentration maintained at 150mg / L, NO 2 - -N concentration maintained at 0-100mg / L, NaHCO 3 The concentration is maintained at 1700mg / L, and argon gas is introduced into the water tank to mix evenly, and the dissolved oxygen in the water is removed at the same time.

[0054] The reactor is made of plexiglass, mainly including a reaction zone and a three-phase ...

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Abstract

By virtue of a complete autotrophic nitrite nitrogen removal process (CANON), a nitrogen removal function is achieved in a reactor through shortcut nitrification and anaerobic ammonium oxidation, and the acclimatization proliferation time of bacteria is reduced. According to a reactor quick start CANON process developed by using a stationary type combined packing and a three-phase separator, by virtue of 25 days of continuous operation, the CANON process is directly started to achieve the purposes that the influent total nitrogen (TN) load is 0.2Kg.m<-3>.d<-1>, the total nitrogen removal load is more than 0.18Kg.m<-3>.d<-1>, and the ammonia nitrogen (NH4<+>-N) removal rate is more than 91%. Moreover, in the starting process, NO3<->-N / deltaNH4<+>-N is less than 0.11. The method disclosed by the invention overcomes the defect of a relatively long starting period of the CANON nitrogen removal process, and meanwhile, the three-phase separator is beneficial for retaining sludge to keep a relatively high biomass in the reactor, so that a relatively high nitrogen removal rate is achieved in a short period.

Description

technical field [0001] The invention belongs to the field of water treatment of nitrogen-containing wastewater, and relates to a quick-start method of a CANON denitrification process, in particular to domestication of anaerobic ammonium oxidation sludge and short-range nitrification sludge under constantly changing water inflow conditions A method for realizing quick start-up of the CANON process. Background technique [0002] With the development of industry and agriculture, a large amount of untreated nitrogen-containing wastewater is discharged into the environment, causing eutrophication of water bodies, consuming dissolved oxygen in water bodies, and being toxic to humans and organisms. In the actual water treatment process, most of the sewage treatment plants adopt the traditional nitrification and denitrification technology, but the traditional nitrification and denitrification denitrification process has a long treatment process, high cost, large power consumption, l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
CPCC02F3/301C02F3/302C02F3/307C02F2203/006
Inventor 臧立华姬丹丹薛嵘谢海涛
Owner QILU UNIV OF TECH
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