A device and method for realizing short-range nitrification-ANAMMOX based on hydroxylamine side inhibition

Abstract

A device and method for realizing short-range nitrification-ANAMMOX based on hydroxylamine side inhibition, which belongs to the field of urban sewage treatment, realizes short-range nitrification by using hydroxylamine to inhibit nitrite oxidizing bacteria (NOB), thereby providing for subsequent anaerobic Ammonia oxidation provides stable nitrite. Hydroxylamine, as the key intermediate product of nitrification reaction, plays an important role in the balance of the whole nitrification process. Appropriate dosage can increase the cell productivity of ammonia oxidizing bacteria (AOB) and inhibit the activity of NOB, so as to achieve a stable short-term nitrification. However, hydroxylamine is also toxic, and excessive dosage will cause the inactivation of AOB and NOB at the same time. Therefore, this patent treats sludge by the side of hydroxylamine, which can control the problem of excess. At the same time, it can start short-range nitrification quickly and maintain a high accumulation of nitrous. The method is simple to operate, and solves the problem that it is difficult to maintain stable nitrite in urban sewage by the short-range nitrification-ANAMMOX process.

Description

technical field

[0001] The device and method for short-range nitrification-ANAMMOX related to the present invention is applicable to the denitrification treatment of urban sewage with low carbon ratio in the field of urban sewage biological treatment. Background technique

[0002] Nowadays, the continuous development of industrialization and the continuous growth of population lead to the excessive growth of plants and algae in the water body, and the serious eutrophication of the water body accelerates the aging of rivers and lakes. Its essence is caused by the discharge of nutrients such as nitrogen and phosphorus into the water body, so the removal of pollutants represented by N and P is an urgent problem to be solved. With the continuous improvement of sewage treatment technology, urban sewage treatment plants are following the path of energy consumption-efficiency-production, with the goal of energy saving, consumption reduction and emission reduction utilization, from ...

Examples

Embodiment Construction

[0031] The reactors used in this method are all SBR, made of plexiglass, the short-path nitrification SBR reactor, and the anammox SBR reactor have an effective volume of 10L, and the sludge treatment SBR reactor has an effective volume of 5L. An aeration device is installed at the bottom of the short-path nitrification reactor and the sludge treatment reactor, and the constant dissolved oxygen can be controlled by adjusting the flow meter and DO online feedback. Part of the short-path nitrification SBR reactor and the anammox SBR reactor are equipped with agitators to ensure uniform mixing of mud and water. The water is inflowed by the peristaltic pump, and the water is outflowed by the drain valve. The time of water inflow and outflow is controlled by the online platform.

[0032] During the operation of the system, the sewage treatment process is as follows: First, the domestic sewage is pumped into the short-range nitrification SBR reactor (2) through the first water inlet...

technical field

[0001] The device and method for short-range nitrification-ANAMMOX related to the present invention is applicable to the denitrification treatment of urban sewage with low carbon ratio in the field of urban sewage biological treatment. Background technique

[0002] Nowadays, the continuous development of industrialization and the continuous growth of population lead to the excessive growth of plants and algae in the water body, and the serious eutrophication of the water body accelerates the aging of rivers and lakes. Its essence is caused by the discharge of nutrients such as nitrogen and phosphorus into the water body, so the removal of pollutants represented by N and P is an urgent problem to be solved. With the continuous improvement of sewage treatment technology, urban sewage treatment plants are following the path of energy consumption-efficiency-production, with the goal of energy saving, consumption reduction and emission reduction utilization, from ...

Examples

Embodiment Construction

[0031] The reactors used in this method are all SBR, made of plexiglass, the short-path nitrification SBR reactor, and the anammox SBR reactor have an effective volume of 10L, and the sludge treatment SBR reactor has an effective volume of 5L. An aeration device is installed at the bottom of the short-path nitrification reactor and the sludge treatment reactor, and the constant dissolved oxygen can be controlled by adjusting the flow meter and DO online feedback. Part of the short-path nitrification SBR reactor and the anammox SBR reactor are equipped with agitators to ensure uniform mixing of mud and water. The water is inflowed by the peristaltic pump, and the water is outflowed by the drain valve. The time of water inflow and outflow is controlled by the online platform.

[0032] During the operation of the system, the sewage treatment process is as follows: First, the domestic sewage is pumped into the short-range nitrification SBR reactor (2) through the first water inlet...

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