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Method for quickly starting shortcut nitrification of urban domestic sewage through hydroxylamine hydrochloride intervention

A technology of urban domestic sewage and hydroxylamine hydrochloride, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of reduced ammonia oxidation rate, no application prospect, long time, etc. , to achieve the effect of simple control, convenient operation and short realization time

Active Publication Date: 2019-10-25
BEIJING UNIV OF TECH
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Problems solved by technology

[0003] In previous research reports, the control conditions for realizing short-cut nitrification mainly include: dissolved oxygen, temperature, sludge age, inhibitors (free ammonia, free nitrous acid, etc.), For a long time, there is no application prospect to a certain extent
In addition, the implementation of certain control conditions will have a negative impact on AOB while inhibiting NOB, resulting in a decrease in the rate of ammonia oxidation

Method used

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  • Method for quickly starting shortcut nitrification of urban domestic sewage through hydroxylamine hydrochloride intervention
  • Method for quickly starting shortcut nitrification of urban domestic sewage through hydroxylamine hydrochloride intervention
  • Method for quickly starting shortcut nitrification of urban domestic sewage through hydroxylamine hydrochloride intervention

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Embodiment Construction

[0021] combined with figure 1 The present invention will be further described with implementation examples.

[0022] A method for quickly starting the short-range nitrification of urban domestic sewage by intervening hydroxylamine hydrochloride, using the following device, the device includes a raw water tank (1), a raw water tank stirring device (1.1), a raw water inlet pump (1.2), a sequence batch reactor (abbreviated For SBR) (2), SBR stirring device (2.1), aeration pump (2.2), flow meter (2.3), aeration disc (2.4), pH probe (2.5), dissolved oxygen (DO) probe (2.6), Drainage valve (2.7), outlet pool (3), hydroxylamine hydrochloride storage barrel (4), dosing pump (5), programmable control system (6), computer (7).

[0023] The raw water tank (1) is equipped with a raw water tank stirring device (1.1), which is connected to the water inlet of the SBR (2) through a raw water inlet pump (1.2); the SBR (2) is provided with an SBR stirring device (2.1), an aeration pump ( 2.2)...

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Abstract

The invention discloses a method for quickly starting shortcut nitrification of urban domestic sewage through hydroxylamine hydrochloride intervention, and belongs to the field of sewage treatment. Main devices involved include a raw water tank, a sequencing batch reactor (SBR) and an automatic control system. By utilizing the strong inhibition effect of hydroxylamine hydrochloride on nitrite-oxidizing bacteria (NOB), an ammoxidation reaction is limited at the stage of producing nitrite, and thus shortcut nitrification is realized. The method comprises the steps that the hydroxylamine hydrochloride is added in the stably-operating complete nitrification SBR at the initial stage of aeration, other conditions remain unchanged, and shortcut nitrification can be stably and rapidly realized. The method is suitable for realization of shortcut denitrification of the urban domestic sewage, and has the simple and feasible characteristics, nitrite nitrogen can be provided for anaerobic ammonia oxidation and denitrification, and the purposes of energy saving and consumption reduction can further be achieved.

Description

technical field [0001] The invention relates to a method for rapidly starting short-range nitrification of urban domestic sewage by intervening hydroxylamine hydrochloride, and belongs to the field of sewage biological treatment. This technology is suitable for the enhanced biological denitrification of urban domestic sewage, especially for the application and development of the short-range nitrification process of the new biological denitrification technology. Background technique [0002] In the practice of urban domestic sewage treatment, although the "full-process nitrification-denitrification" technology has been proved to be a stable denitrification method, the process consumes a lot of energy and often has the bottleneck problem of insufficient carbon sources, which is not in line with today's society. sustainable development requirements. Short-cut nitrification has been considered as one of the most promising biological denitrification technologies since its discov...

Claims

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Application Information

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IPC IPC(8): C02F3/12C02F101/16
CPCC02F3/1263C02F2101/16C02F2209/08C02F2209/14C02F2209/15C02F2305/00Y02W10/10
Inventor 王博乔昕宫小斐宫庆腾
Owner BEIJING UNIV OF TECH
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