Method for long-term storage and rapid activity recovery of anaerobic ammonia oxidation sludge

An anammox and long-term storage technology is applied in the field of long-term storage and rapid recovery of anammox sludge, achieving the effects of fast and efficient method, simple operation and long storage time.

Inactive Publication Date: 2022-03-18
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for long-term storage and rapid recovery of activity of anaerobic ammonium oxidation sludge for the restart of idle sludge and the intermittent shutdown problems faced by existing sewage treatment plants

Method used

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  • Method for long-term storage and rapid activity recovery of anaerobic ammonia oxidation sludge
  • Method for long-term storage and rapid activity recovery of anaerobic ammonia oxidation sludge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method for long-term storage of anaerobic ammonium oxidation sludge, comprising the following steps:

[0030] S1. Put the anammox sludge in reactor A to settle for 0.5h, discard the supernatant, then add high-concentration synthetic wastewater to the original liquid level (1L), stir evenly, let it settle again, and discard the supernatant liquid, and so repeated 3 times; high-concentration synthetic wastewater includes: (NH 4 ) 2 SO 4 、NaNO 2 , 1200mg / L NaHCO 3 、68mg / L CaCl 2 、68mg / L KH 2 PO 4 , 150mg / L MgSO 4 , Trace elements Ⅰ include 5000mg / L EDTA and 5000mg / L FeSO 4 , trace elements II include 15000mg / L EDTA, 430mg / L ZnSO 4 ·7H 2 O, 240mg / L CoCl 2 ·6H 2 O, 990mg / L MnCl 2 4H 2 O, 250mg / L CuSO 4 ·5H 2 O, 220mg / L Na 2 MoO 4 2H 2 O, 190mg / L NiCl 2 ·6H 2 O, 210mg / L Na 2 SeO 4 10H2 O, wherein the concentration of ammonia nitrogen and nitrous is 4 times that of reactor A when it is running, the ammonia nitrogen and nitrous concentrations are 200 mg...

Embodiment 2

[0038] A method for long-term storage of anaerobic ammonium oxidation sludge, comprising the following steps:

[0039] S1. Set aside the anammox sludge in the reactor A to be shut down for 0.5h, discard the supernatant, then add high-concentration synthetic wastewater to the original liquid level (2L), stir evenly and let it settle again, discard Remove the supernatant, and repeat this 5 times; high-concentration synthetic wastewater includes: (NH 4 ) 2 SO 4 、NaNO 2 , 1200mg / L NaHCO 3 、68mg / L CaCl 2 、68mg / L KH 2 PO 4 , 150mg / L MgSO 4 , Trace elements Ⅰ include 5000mg / L EDTA and 5000mg / L FeSO 4 , trace elements II include 15000mg / LEDTA, 430mg / L ZnSO 4 ·7H 2 O, 240mg / L CoCl 2 ·6H 2 O, 990mg / L MnCl 2 4H 2 O, 250mg / LCuSO 4 ·5H 2 O, 220mg / L Na 2 MoO 4 2H 2 O, 190mg / L NiCl 2 ·6H 2 O, 210mg / L Na 2 SeO 4 10H 2 O, among them, the concentrations of ammonia nitrogen and nitrous are 4 times higher than before the shutdown, the concentration of ammonia nitrogen is 1...

Embodiment 3

[0047] A method for long-term storage of anaerobic ammonium oxidation sludge, comprising the following steps:

[0048] S1. Set aside the anammox sludge in the reactor A to be shut down for 1 hour, discard the supernatant, and then add high-concentration synthetic wastewater to the original liquid level (4.5L), stir evenly and let it settle again, discard Remove the supernatant, and repeat this 4 times; high-concentration synthetic wastewater includes: (NH 4 ) 2 SO 4 、NaNO 2 , 1200mg / L NaHCO 3 、68mg / L CaCl 2 、68mg / L KH 2 PO 4 , 150mg / L MgSO 4 , Trace elements Ⅰ include 5000mg / L EDTA and 5000mg / L FeSO 4 , trace elements II include 15000mg / LEDTA, 430mg / L ZnSO 4 ·7H 2 O, 240mg / L CoCl 2 ·6H 2 O, 990mg / L MnCl 2 4H 2 O, 250mg / LCuSO 4 ·5H 2 O, 220mg / L Na 2 MoO 4 2H 2 O, 190mg / L NiCl 2 ·6H 2 O, 210mg / L Na 2 SeO 4 10H 2 O, among them, the concentrations of ammonia nitrogen and nitrous are 4 times higher than before the shutdown, the concentrations of ammonia nitr...

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Abstract

The invention belongs to the technical field of environmental pollution treatment, and provides a method for long-term storage and rapid activity recovery of anaerobic ammonia oxidation sludge, and the storage method comprises the following steps: transferring the anaerobic ammonia oxidation sludge into a biological filter column, regularly adding high-concentration synthetic wastewater, and standing for storage; the method for restoring the activity of the stored anaerobic ammonia oxidation sludge comprises the step of adjusting the hydraulic retention time and the water inlet matrix concentration step by step according to the denitrification performance. The method is easy to operate and low in operation cost, the relative abundance of anaerobic ammonium oxidation bacteria stored for 1-24 months can be maximally reserved to 73.6% of that before storage, the anaerobic ammonium oxidation performance can be recovered only by adjusting operation parameters such as hydraulic retention time, the method is rapid and efficient, the method can be completed within 30 days at most, and the method is suitable for industrial production. Theoretical basis and technical guidance are provided for storage and restart of the idle sludge, and the problems that the anaerobic ammonia oxidation sludge cannot be stored for a long time and the processing property is difficult to recover quickly after a sewage treatment plant stops production are solved.

Description

technical field [0001] The invention belongs to the technical field of environmental pollution control, and in particular relates to a method for long-term storage and rapid activity recovery of anaerobic ammonium oxidation sludge. Background technique [0002] With the development of social economy and the gradual deepening of urban construction, the discharge of nitrogen-containing wastewater is increasing year by year, which will not only cause direct damage and impact on the ecosystem, but also cause indirect harm to human society. The anammox process is a biochemical process in which ammonia nitrogen and nitrous react to generate nitrogen under the action of anammox bacteria. Since the process was proposed in the 1990s, it has been considered as a new technology because it does not need to add organic carbon sources, saves aeration energy consumption, and reduces greenhouse gas emissions. It is in line with the current energy crisis and the concept of green development ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28
CPCC02F3/2813
Inventor 张肖静马冰冰王琼马永鹏宋亚丽杨浩洁陈娜
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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