Device for enriching anaerobic ammonia-oxidizing bacteria and method for treating wastewater by using the device

A technology for enriching red bacteria and treating wastewater, which is applied in the adjustment methods of biological treatment, water treatment parameter control, chemical instruments and methods, etc. , slow growth of anammox bacteria, etc., to achieve the effect of shortening sludge retention time, shortening hydraulic retention time, and increasing holding capacity

Pending Publication Date: 2022-02-08
黑龙江红菌生物科技有限公司
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AI-Extracted Technical Summary

Problems solved by technology

[0006] (1) When the traditional process is used for rapid enrichment and cultivation of anaerobic ammonium oxidation particles, organic carbon sources need to be supplemented, the sludge output is large, and the cost of sludge disposal is high. The operation of the equipment is easy to cause the loss of bacteria, which is not conducive to the enrichment of bacteria
[0007] (2) The anammox bacteria used in the traditional anammox process g...
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Method used

In step one, add diatomite and pearlite in the mixed process of nitrification sludge and denitrification sludge, the composition of diatomite is silicon dioxide, and it has abundant pore structure, and pearlite can penetrate into In silica, the water absorption of silica will be changed. At the same time, silica can enhance the nucleation rate of pearlite, increase the plasticity and toughness of pearlite, and the two substances coordinate with each other to help adjust the pH value of sludge. Change the particle structure of the sludge, destroy the stability of the colloid, improve the flocculation effe...
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Abstract

The invention discloses a device for enriching anaerobic ammonia-oxidizing bacteria and a method for treating wastewater by using the device, and relates to the technical field of sewage treatment. The invention aims to solve the problems of long anaerobic ammonia oxidation starting time and slow growth of anaerobic ammonia oxidizing bacteria in the anaerobic ammonia oxidation technology. The method comprises the following steps that: an air pump is started, mixed wastewater is aerated through an aerator, the concentration of dissolved oxygen in the mixed wastewater is adjusted to 0.5-1.5 mg/L, and then the air pump is turned off; a PLC is used for controlling a substrate concentration measuring device to measure the concentration of organic matters in the mixed wastewater, when the proportion of nitrite ions to ammonium ions is lower than 1.1, the PLC is used for automatically controlling a nutrient substance adding port to add nutrient substances into a reaction tank, the operation is continued, and after the anaerobic ammonia oxidation reaction in the reaction tank is finished, the motor is turned off. The invention can obtain the device for enriching the anaerobic ammonia-oxidizing bacteria and the method for treating the wastewater by using the device.

Application Domain

Water treatment parameter controlWater treatment compounds +2

Technology Topic

Nitrite ionEnvironmental chemistry +9

Image

  • Device for enriching anaerobic ammonia-oxidizing bacteria and method for treating wastewater by using the device
  • Device for enriching anaerobic ammonia-oxidizing bacteria and method for treating wastewater by using the device

Examples

  • Experimental program(9)

Example Embodiment

[0023] DETAILED DESCRIPTION a: an apparatus according to the present embodiment, the enrichment of bacteria were used, including reaction vessel 10, and the gas generation rate detection means output 3, an air pump 5, aerator 6, 7 stirrer, a filler means 9, the end concentration measuring device 11, PLC 12 and the motor 13;
[0024] The reactor is provided with a water inlet port to add nutrients and 4, the side wall 2 is provided with an outlet 10 on the sidewalls of the lower portion of the reaction vessel upper portion of the tank 10; the signal receiving end of said gas production rate detecting means and generating 3 sensing probe and the composition, and the signal receiving terminal connected to sensing probe, the sensing probe is disposed above the reaction can 10; inside the reaction tank 10 is provided with a stirrer 7, the motor 13 is connected through a coupling 7 with a stirrer ; the lower tank 10 is provided in the reaction with substrate concentration measuring device 11; the bottom in the reaction tank 10 is provided with a plurality of aerators 6, the air pump outlet 5 via the conduit aerator intake port 6 communication; above the aerator 96 is provided with a filler means; and a lower portion of the reaction tank 10 is a funnel-shaped structure, the bottom of funnel shaped structures is provided with sludge inlet 8; the output of the PLC 12 via a wire and gas production and generating rate detecting means 3, addition port 4 nutrients and substrate concentration measuring means 11 is connected electrically.

Example Embodiment

[0025] DETAILED Embodiment 2: Embodiment of the present embodiment and a particular embodiment is different: the filler means 9 is provided with a filler, and the filler is a ceramic foam, said ceramic foam with a volume ratio of 2: 1 .
[0026] The foam having a strong adhesive, can be adsorbed on the surface of the ceramic; ceramic developed pore structure, it can be inclusive of foam adhered to each other both increases friction, to facilitate the interception of red bacteria, such bacteria capable of adsorbing red and the ceramic foam surface, while reducing the influence of both the synergistic effect of aeration during agitation to form a granular sludge anammox bacteria and promote red enriched bacteria.
[0027] The other steps are the same as a specific embodiment.

Example Embodiment

[0028] DETAILED Embodiment 3: Embodiment of the present embodiment and the exemplary embodiment is one or two different points: at the outlet 2 is provided with a water filter, pore size of the membrane effluent is 0.45μm.
[0029] Other specific embodiments of a step or two identical.
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PUM

PropertyMeasurementUnit
Aperture0.45µm
tensileMPa
Particle sizePa
strength10

Description & Claims & Application Information

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