Method and device for rapidly obtaining maximum respiration rate of active sludge

Abstract

The invention discloses a method and device for rapidly obtaining the maximum respiration rate of active sludge and a respiration rate under influence of an inflow water sample. The device comprises areaction pool body, a reaction pool cover and a dissolved oxygen (DO) electrode. The reaction pool cover is buckled on a reaction pool. The dissolved oxygen (DO) electrode penetrates the reaction pool cover and is inserted into the reaction pool. A sludge / emptying peristaltic pump is connected with the reaction pool and a three-way electromagnetic valve through utilization of pipes; the other twoways of the three-way electromagnetic valve is connected with a sludge pool and a waste water barrel; a water sample peristaltic pump is connected with the reaction pool and a water sample pool through utilization of the pipes; a nutrient solution peristaltic pump and a washing liquid peristaltic pump are connected with a nutrient solution bottle and a washing liquid bottle through utilization ofthe pipes; a miniature pump is connected with the reaction pool and an air filter through utilization of the pipes; and a stirring device is set at a lower side of the reaction pool body. The methodand the device are characterized by simple operation, convenient maintenance, high automatic degree and flexible configuration. The method and the device can be applied to inflow water quality onlinemonitoring of a practical sewage plant.

Description

technical field [0001] The invention relates to a method and a device for quickly obtaining the maximum respiration rate of activated sludge, and can simultaneously measure the respiration rate under the influence of water inflow. The maximum respiration rate value can be used to evaluate the sludge activity state of the sewage treatment plant, and the respiration rate value under the influence of influent water can evaluate the influence of influent water quality on activated sludge, and can be further used to evaluate the toxicity level of influent water quality. It belongs to the technical field of environmental monitoring. Background technique [0002] At present, the most widely used technology in the field of sewage treatment is the activated sludge method, which uses the metabolism of microorganisms in activated sludge to transform and degrade pollutants in wastewater. The aerobic respiration rate (OxygenUptake Rate, OUR) of activated sludge refers to the dissolved o...

AI Technical Summary

Problems solved by technology

[0008] At present, most of the reactors used to measure the biological activity of sludge adopt continuous culture measurement systems. The main problems include: ① Two dissolved oxygen electrodes are installed in the system, which are placed at the inlet and outlet ends of the reactor, between the electrodes There are systematic errors; ②The system can only measure the change of influent toxicity caused by the sudden change of water quality, and cannot evaluate the absolute toxicity of the water sample, that is, the system cannot measure it when the sample has a steady toxicity; ③The system is relatively complex, and the system Individual units require precise control of parameters to achieve desired results

Images