Aeration system maintenance device and method with two-dimensional dissolved oxygen detection and online cleaning functions

Abstract

The invention discloses an aeration system maintenance device and method with two-dimensional dissolved oxygen detection and online cleaning functions. A carrier is arranged on or below the water surface of an aeration tank which is commonly used at present; on-line dissolved oxygen detection equipment, ultrasonic cleaning equipment and underwater distance measurement equipment are mounted on thecarrier; a two-dimensional dissolved oxygen distribution map and an aerator depth point map can be drawn in a normal production (aeration) state; and when the aerator is blocked by dirt, the ultrasonic cleaning device performs on-line cleaning. According to the device, dissolved oxygen distribution of the aeration tank can be collected in real time, and an operator can know real-time information of a biochemical reaction of the aeration tank through the dissolved oxygen distribution and accurately locate damage of aeration pipelines and aerators; after an aeration head is blocked by dirt, ultrasonic online cleaning of the aerator is realized without emptying the aeration tank, cleaning time is short, and medicines and manual operation are not needed; and furthermore, the device can be linked with an aeration control system to realize accurate aeration.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, in particular to an aeration system maintenance device and method with functions of two-dimensional dissolved oxygen detection and online cleaning. Background technique [0002] Aerobic aeration technology is widely used in the mainstream process of sewage treatment plants in my country to achieve stable and effective reduction of pollutants. According to literature statistics, the power consumption of the aeration system accounts for 40-60% of the total power consumption of the sewage treatment plant. The energy consumption of the aeration system mainly comes from the energy loss of the blower, the resistance loss of the pipeline system and the local resistance loss of the aerator, which is mainly affected by the air volume and resistance characteristics. [0003] The energy loss of the blower and pipeline system is relatively small, and the change after installation is also small; whi...

AI Technical Summary

Problems solved by technology

Since the aerator is submerged underwater, it is difficult to find damage and pollution. At present, the damage of the aerator can only be qualitatively estimated by observing the bubble shape on the liquid surface of the aeration tank. This method relies on the experience of the observer and only It is suitable for judging the situation that has been seriously blocked or damaged, and it is impossible to take measures in advance

At this time, there will generally be large-scale repairs, replacements and production shutdowns of the aerator, causing greater losses.

[0004] Chinese patent CN107280608A discloses an ultrasonic physical aeration cleaning system. The system needs to empty the aeration tank, take out the aerator and clean it in an ultrasonic cleaning device. This patent illustrates the effectiveness of ultrasonic cleaning, but it is essentially a A shutdown off-line cleaning that requires the aerator to be disassembled

Formic acid cleaning can have a certain effect, but on the one hand, the use of formic acid will affect the biochemical reaction process of the sewage treatment plant, corrode the pipeline, and increase the operating cost. Limited removal of dirt attached to the outside of the aerator

[0006] Chinese patent CN203451290U discloses an aerator that can be cleaned online. This aerator is a general-purpose aerator with additional cleaning equipment. It is actually a special aerator and does not have universality. , only applicable to new water plants

Due to the large number of aerators in the aeration tank, the use of special equipment will lead to a substantial increase in construction costs

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