Monitoring Method Based on Sequencing Batch Biotoxicity Monitoring and Early Warning System

A sequencing batch biological, monitoring and early warning technology, applied in measurement devices, material analysis by electromagnetic means, instruments, etc., can solve the problem of difficult to consider the time of activated sludge and toxic substances contact poisoning, biological toxicity monitoring and early warning stability It needs to be improved, it is difficult to truly reflect the OUR value and other problems, so as to achieve the best mixing effect, strong anti-interference ability and little mutual interference.

Inactive Publication Date: 2016-12-28
陈亚松
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

However, this continuous flow state monitoring and early warning method is difficult to consider the time of contact poisoning between activated sludge and toxic substances. Due to the continuous flow state, multiple different electrodes must be used to measure the dissolved oxygen value at different times, and multiple different electrodes monitor There is an instrument system error in dissolved oxygen. When there are more dissolved oxygen indicators monitored at different times, the system error is greater. When the dissolved oxygen indicators are less at different times, it is difficult to truly reflect the OUR value.
Therefore, the accuracy and stability of the biotoxicity monitoring and early warning of the continuous flow process method based on the OUR principle need to be improved

Method used

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  • Monitoring Method Based on Sequencing Batch Biotoxicity Monitoring and Early Warning System
  • Monitoring Method Based on Sequencing Batch Biotoxicity Monitoring and Early Warning System
  • Monitoring Method Based on Sequencing Batch Biotoxicity Monitoring and Early Warning System

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Experimental program
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Embodiment 1

[0032] Such as image 3 As shown, based on the monitoring method of the sequential batch biotoxicity monitoring and early warning system, the steps are as follows:

[0033] Step 1: Injection into the mixing stage, the sewage filtered by the security filter 2 is injected into the sequencing batch reactor 5 through the sewage injection pump 4-1, and the activated sludge is injected into the sequencing batch reaction through the sludge injection pump 4-2 In device 5, the volume flow ratio of sewage is Q 1 : Q 2 The injection time is 1:1~4:1, the injection time is controlled at 30s, the activated sludge is concentrated sludge, and the sludge concentration MLSS is controlled at 8000~10000mg / L, so that the concentration of the mixed sewage and sludge is kept at 2000-4000mg / L, which is convenient for subsequent full contact and reaction.

[0034] Step 2: In the contact stirring stage, the stirring device 5-1 in the sequencing batch reactor 5 is started, so that the activated slud...

Embodiment 2

[0048] Embodiment 2 (as figure 2 and image 3 shown)

[0049] The following are the implementation steps of three parallel sequencing batch reactors

[0050] In order to shorten the monitoring feedback time of the sequencing batch biotoxicity monitoring and early warning system, multiple sequencing batch reactors can be connected in parallel for monitoring and early warning. In this example, three parallel sequencing batch reactors are used to illustrate the specific steps. Such as figure 2 Shown, three sequencing batch reactors are carried out respectively according to the step of embodiment 1.

[0051] With reference to the steps in Example 1, the sewage enters the first sequencing batch reactor with activated sludge after being filtered through a security filter, and the operating parameters are the same as in Example 1, such as the volume flow ratio Q of sewage 1 : Q 2 The injection time is 1:1~4:1, the injection time is controlled at 30s, the activated sludge is c...

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Abstract

The invention provides a monitoring method based on a sequential batch biotoxicity monitoring and early warning system. The early warning system includes sewage system, security filter, activated sludge system, sewage injection pump, sludge injection pump, sequencing batch reactor, dissolved oxygen electrode and PLC system. Monitoring methods include injection mixing, contact stirring, aeration and oxygenation , reaction monitoring, emptying and cleaning a total of five stages. The early warning system of the invention adopts the principle of a sequencing batch reactor, and has the best reaction and mixing effects, and the device is in a completely closed state and has strong anti-interference ability. Therefore, its response is more efficient and the result is more accurate. Through the method of sequencing batch reaction, the measurement and calculation of the respiration rate of activated sludge are completed in the same reactor and using the same dissolved oxygen electrode, which is more efficient and accurate than the continuous operation of the reactor, avoiding the conventional Utilizing the systematic error of multiple dissolved oxygen electrode monitoring in continuous operation, it can be widely used in online monitoring and early warning of sewage toxicity.

Description

technical field [0001] The invention relates to a monitoring method based on a sequence-batch biological toxicity monitoring and early warning system, and belongs to the technical field of monitoring methods of biological toxicity monitoring and early warning systems. Background technique [0002] Activated sludge process is the main process in the field of urban sewage treatment. Most urban sewage is composed of domestic sewage and industrial sewage. The industrial sewage has complex components, which often contain toxic organic substances, heavy metals and other substances that are toxic to activated sludge microorganisms, resulting in unstable biological treatment process and even paralysis of the treatment system. In recent years, there have been frequent reports of industrial sewage causing severe impacts on urban sewage plants. For example, during the holidays of Kunshan North District sewage plant, copper ions in the water repeatedly caused long-term paralysis of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/00
Inventor 陈亚松吕席卷杨广文
Owner 陈亚松
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