A sewage biological toxicity online monitoring analyzer and monitoring system

Abstract

The invention discloses an online monitoring analyzer and a monitoring system for sewage biotoxicity. The analyzer is in an integrated cabinet structure and the cabinet structure comprises an upper cabinet space and a lower cabinet space; the upper cabinet space is used for mounting a control system, a data collection and analysis system and a touch screen; the lower cabinet space is divided into front and back parts; the front and back parts are separated by a detachable separation plate; and the detachable separation plate is fixedly provided with a feeding pump, an air flow meter, a solenoid valve and a pipeline. The analyzer disclosed by the invention is in the integrated cabinet structure and is formed by an air-liquid conveying system, a wet type biochemical reaction system, an automatic control system and a data collection, processing and communication system; and the analyzer is used for online identification and early warning for the biotoxicity of the incoming sewage of a sewage treatment plant, prevents the sewage treatment efficiency from being influenced due to the reason that active sludge is poisoned by toxic components in the sewage, and has the characteristics of full-automation in operation, rapidness and accuracy in analyzing, simplicity in installation, convenience in maintenance and the like.

Description

technical field [0001] The invention relates to the technical field of sewage monitoring, in particular to an on-line monitoring analyzer and monitoring system for sewage biological toxicity. Background technique [0002] Sewage biotoxicity monitoring techniques include: (1) Acute toxicity test of aquatic animals and plants, including fish toxicity, daphnia toxicity, duckweed, broad bean root tip micronucleus, algae toxicity and other test methods; (2) microbial toxicity test, Including luminescence characteristics, respiration inhibition, enzyme activity inhibition and other test methods. Among them, the microbial respiration inhibition test has been used to evaluate the toxic effect of wastewater on activated sludge due to its accuracy and intuitiveness. A sudden drop in the oxygen respiration rate of the sludge is often the most sensitive early warning when the treatment system is subjected to a toxic shock resulting in sludge poisoning. [0003] At present, in the onli...

AI Technical Summary

Problems solved by technology

Although the online detection of the specific oxygen consumption rate is faster, more intuitive and accurate than the conventional detection technology, the specific oxygen consumption rate needs to be calculated and converted according to the value of the dissolved oxygen and sludge concentration in the system to obtain it, rather than the online direct monitoring of the instrument Therefore, in the process of actual operation and application, data simulation is prone to non-correlation, resulting in error results, and at the same time making the development of online automatic control and data analysis programs difficult

In addition, domestic sewage treatment plants still have problems such as the lack of technology and instruments for online rapid identification of abnormal working conditions, and the lagging technology of process parameter control, which also brings challenges to the online detection technology of actual sewage treatment plants. certain degree of difficulty

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