Method for early warning and monitoring of toxicity of inflow water of sewage plant

A technology for influent toxicity and early warning monitoring, applied in measuring devices, material analysis through electromagnetic means, instruments, etc., can solve the problems of double dissolved oxygen electrode equipment system error, unstable continuous monitoring, high maintenance requirements, etc., and achieve representativeness Strengthen, reduce impact, increase the effect of carbon source replenishment system

Active Publication Date: 2014-01-01
江苏金舵环境科技有限公司
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Problems solved by technology

There are few wastewater biotoxicity monitoring equipment developed on the basis of this principle, and the developed equipment has problems such as complex system, unstable continuous monitoring, high maintenance requirements, and systematic errors between dual dissolved oxygen electrode equipment.

Method used

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  • Method for early warning and monitoring of toxicity of inflow water of sewage plant
  • Method for early warning and monitoring of toxicity of inflow water of sewage plant
  • Method for early warning and monitoring of toxicity of inflow water of sewage plant

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Embodiment

[0033] (1) if figure 1 As shown, a set of influent toxicity early warning monitoring device is established, including sewage supply system 1, sludge supply system 2, pre-aeration complete mixing reactor 5, complete mixing early warning reactor 18, PLC system 12 and carbon source storage 22 , the sewage supply system 1 and the sludge supply system 2 are connected to the pre-aeration complete mixing reactor 5 through the sewage pump 3 and the sludge pump 4 respectively; The liquid enters into the complete mixing early warning reactor 18 through the disk type silicone tube 22; utilizes the DO1 electrode 11 connected with the DO1 sensor 10 and the DO2 electrode 14 connected with the DO2 sensor 13 to pre-aerate the complete mixing reactor 5 and the complete mixing early warning respectively. The DO value in the reactor 18 is monitored; the DO1 sensor 10 and the DO2 sensor 13 are connected to the PLC system 12 to collect and judge the monitored data; the carbon source storage 23 is ...

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Abstract

The invention discloses a method for early warning and monitoring of toxicity of inflow water of a sewage plant. The method comprises the steps as follows: active sludge in a biochemical pool is continuously collected and mixed with the inflow water proportionally for pre-aeration; the mixture is pumped into a completely mixed prewarning reactor; a dissolved oxygen electrode is adopted to monitor DO (dissolved oxygen) in real time; and data is acquired and analyzed by a PLC (programmable logic controller) system, and DOY% is calculated according to a formula that DOY % is a product obtained by multiplying 100 by a quotient obtained by dividing a difference of DO2 and DO1 by DO0, wherein DO0 represents the amount of oxygen consumed by a system, DO1 represents the dissolved oxygen amount before impact of toxicants, DO2 represents the dissolved oxygen amount after impact of the toxicants, and the DOY% and a preset inhibition ratio are compared, so that the inhibitive characteristic of the inflow water to the active sludge in the biochemical pool is evaluated. With the adoption of the method, the toxicity of the inflow water of the sewage plant can be monitored in real time, the toxicity condition of the active sludge in the sewage plant can be really reflected, further, the operation and the maintenance are simple, the cost is low, and accordingly, the method is applicable to online monitoring of the toxicity of the inflow water of the sewage plant.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to sewage containing industrial waste water, in particular to a monitoring method for on-line continuous monitoring of the toxicity of sewage plant influent. Background technique [0002] In the current water treatment technology, the activated sludge method is still widely used in large, medium and small sewage treatment plants due to its advantages of simple treatment process, low operating cost, and convenient maintenance. With the acceleration of my country's industrial development, the discharge of industrial wastewater is increasing year by year. It is more common for untreated industrial wastewater to be merged into urban domestic sewage and enter sewage treatment plants, which may contain a large amount of microbial toxic substances. Substances will inhibit the normal metabolic process of activated sludge microorganisms, resulting in unstable sewage treatment process, the qual...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/00
Inventor 赵文玉杨广文王哲王庆
Owner 江苏金舵环境科技有限公司
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