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Device for detecting dynamic specific oxygen utilization rate of activated sludge system

A specific oxygen consumption rate and system dynamic technology, applied in the field of SBR biological treatment devices, can solve problems such as hysteresis and inability to provide online feedback, and achieve the effects of simple operation, high degree of automation, and sensitive response time

Inactive Publication Date: 2009-10-14
BEIJING UNIV OF TECH
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Problems solved by technology

[0009] The device proposed by the present invention realizes online detection of SOUR, visually displays the SOUR curve, and feeds back to the actuator of the terminal through the controller (PLC) to control the reaction process, which solves the problem of offline measurement of the traditional measurement method, which has hysteresis and cannot be fed back online. question

Method used

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  • Device for detecting dynamic specific oxygen utilization rate of activated sludge system
  • Device for detecting dynamic specific oxygen utilization rate of activated sludge system

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Embodiment Construction

[0031] The reaction device adopted in this embodiment comprises a reactor system, a metering system and an automatic control system (such as figure 1 shown).

[0032] Reactor system: Domestic sewage is led to the water tank 1, lifted by the water pump 2, and enters the SBR reactor 4 through the water inlet pipe 3. The mixing of anoxic and anaerobic is done by stirrer 5. The aerobic oxygenation is completed by the air blower 6 through the microporous aeration head under the flow rate adjusted by the flow meter 7 , the carbon source required for denitrification is added by the dosing pump 8 , and the drainage is completed through the drain valve 9 .

[0033] The metering system includes a closed metering bottle 10, which is placed on a magnetic stirrer 11. When the system is running, the rotor of the magnetic stirrer keeps stirring to keep the sludge in a suspended state. The return pump 12 controls the return flow of the sludge to make the whole sludge The system is in a loop...

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Abstract

The invention relates to a device for detecting dynamic specific oxygen utilization rate (SOUR) of an activated sludge system, belongs to the theory and technique of strengthening biological denitrification treatment with an activated sludge process, and designs a set of on-line detection device for simultaneously feeding back the activated sludge specific oxygen utilization rate of SBR process by aiming at the problems of off-line measurement, hysteresis quality and unavailable on-line detection and feedback and the like existing in the traditional method for measuring the oxygen utilization rate. The system is most characterized in that a sealed recorder jar is put on a magnetic stirring apparatus and a sludge circulating loop is formed through a reflux pump and a reactor; sensors are dissolved oxygen sensors and two sensors are respectively put in the sealed recorder jar and an SBR reactor so as to be capable of realizing the on-line detection of SOUR and the simultaneous feedback. The device is concise in design, stable in operation and good in reproduction quality of measured data, and can accurately monitor the reactive states of the system at different time by intuitively representing the SOUR curve.

Description

technical field [0001] The invention relates to an SBR biological treatment device for nitrogen-containing waste water, in particular to an SBR device capable of deep denitrification and automatic control. The technical field is: activated sludge process enhanced biological denitrification treatment theory and technology. Background technique [0002] The specific oxygen consumption rate (SOUR) of activated sludge is one of the important parameters to characterize the biological activity of sludge, which reflects the physiological state of activated sludge and substrate metabolism from the perspective of microbial respiration rate. In the initial stage of the application of the activated sludge method, the respiration rate of aerobic microorganisms was used to investigate the microbial biomass and substrate utilization rate. In recent years, SOUR has been used as a parameter to detect the biological activity of sludge. In terms of ability, it is generally valued by experts ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24C02F3/12
CPCY02W10/10
Inventor 彭永臻李凌云王淑莹吴蕾李论
Owner BEIJING UNIV OF TECH
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