A method for starting an integrated short-range nitrification-anammox process

A technology of anaerobic ammonium oxidation and short-range nitrification, which is applied in the field of start-up integrated short-range nitrification-anammox process, which can solve the problems of harsh operating conditions, unstable total nitrogen removal effect, slow start-up time, etc., and shorten the start-up time , avoid the generation of nitrification in the whole process, and accelerate the start-up time

Active Publication Date: 2019-02-22
FUJIAN PROVINCIAL ACADEMY OF ENVIRONMENTAL SCI
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for starting an integrated short-range nitrification-ANAMMOX process, which solves the problems of slow start-up time, harsh operating conditions and unstable total nitrogen removal effect of the existing integrated autotrophic denitrification process

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  • A method for starting an integrated short-range nitrification-anammox process

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Embodiment 1

[0026] The short-course nitrification activated sludge cultivated in this laboratory was soaked in 2.5 mg / L NaCl solution for 24 hours in advance, and then the soaked short-course nitrification activated sludge and granular sludge (sludge with preliminary anaerobic ammonia oxidation activity) The mud color is red, and the total nitrogen volume removal load is 0.50 kgN / (m 3 · d)), inoculated according to the mass ratio of 4:5, and the MLSS was controlled at 5500 mg / L. The CANON reactor is made of plexiglass, the upper part is a cylinder, the bottom is a cone, the height is 400 mm, the diameter is 200 mm, and the effective volume is 10 L. Wrap the CANON reactor with aluminum foil tape to avoid light and keep warm, and control the temperature inside the CANON reactor to 30°C by heating in a water bath. The amount of aeration is controlled by a rotameter, and the DO is controlled below 0.5 mg / L. An operation cycle includes four stages of water intake, reaction, sedimentation and...

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Abstract

The invention discloses a method for starting the integrated partial nitrification-anaerobic ammonia oxidation process. The method includes adding prepared partial nitrification activated sludge into a CANON reactor proportionally, adopting 2.5mg / L NaCl for performing 24h soaking treatment on the partial nitrification activated sludge, and then adding anaerobic ammonia oxidation granular sludge. The CANON reactor operates in an intermittent mode, one operation cycle comprises four stages of water intake, reaction, sedimentation and water discharge, mechanical agitation and aeration are performed in the reaction stage, the reaction process is controlled on line through DO, aeration is stopped immediately when the DO concentration in the CANON reactor is higher than 1.2mg / L continuously, and the whole process is finished after operating for 51d. With the method for starting the integrated partial nitrification-anaerobic ammonia oxidation process quickly and efficiently, the problem that the existing integrated autotrophic nitrogen removal process is slow in starting, strict in operation condition and instable in total nitrogen removal effect is solved.

Description

technical field [0001] The invention belongs to the technical field of wastewater biological treatment, and in particular relates to a method for starting an integrated short-range nitrification-anammox process. Background technique [0002] With the increasingly stringent environmental quality standards and water pollutant discharge standards, nitrogen pollution, especially total nitrogen pollution, has attracted increasing attention. However, the traditional biological treatment process has low total nitrogen removal rate and high energy consumption, so the research and development of efficient wastewater biological nitrogen removal technology is imperative. [0003] The integrated short-range nitrification-ANAMMOX coupling process (CANON process) integrates the two latest biological denitrification mechanisms of short-range nitrification and anammox In the oxygen ammonium oxidation stage, a small part of nitrite nitrogen is used as an electron donor to synthesize an inor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30
CPCC02F3/301C02F3/302C02F2209/08
Inventor 陈益明张健
Owner FUJIAN PROVINCIAL ACADEMY OF ENVIRONMENTAL SCI
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