Anti-jamming method for sludge scraper of power-plant wastewater concentration treatment pond

Abstract

The invention provides an anti-jamming method for a sludge scraper of a power-plant wastewater concentration treatment pond. The method comprises the following steps: continuously measuring the moment of force in a rotary sludge scraping process of a rotary rake of the sludge scraper, judging the aggregation degree of sludge in the treatment pond according to the continuously measured moment of force, and discharging the sludge according to the aggregation degree of the sludge. According to the invention, an original complex and low-reliability mechanical torque mechanism is simplified, measurement precision is improved, and the reliability of judging the aggregation degree of sludge in the treatment tank according to the measured torque is ensured; the functions of automatic sequential control of sludge discharging and flushing according to gyroscopic moment are achieved, stepping rake lifting of a scraper rake machine can be achieved based on moment control, and meanwhile, overload of a sludge-scraping rotary motor and a transmission shaft system is avoided through frequency conversion speed regulation; sludge treatment effect is improved, and the power consumption of a sewage pump is reduced; the long-period operation of a slag water system and a desulfurization wastewater concentration tank is realized, the risk of environmental pollution caused by manual desilting due to system shutdown is avoided, and labor cost generated by pool cleaning due to shutdown is also saved.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment in coal-fired power plants, and in particular relates to a method for preventing a mud scraper from being stuck in a waste water concentration treatment pool of a power plant. Background technique [0002] The central drive mud scraper is widely used in various sewage treatment systems of coal-fired power plants. Its main function is to concentrate and settle muddy wastewater such as desulfurization wastewater, boiler bottom slag water, and industrial wastewater. The mud pit is then discharged by the mud pipe pump equipment to complete the clarification treatment of muddy wastewater. [0003] When the sludge after thickening and sedimentation is not discharged smoothly or not in time, it will cause sludge accumulation in the thickening tank. The accumulated sludge will cause equipment damage such as rotary rake pressure of the mud scraper, overrunning of the rotary torque, damage to the ...

AI Technical Summary

Problems solved by technology

[0003] When the sludge after thickening and sedimentation is not discharged smoothly or not in time, it will cause sludge accumulation in the thickening tank

The accumulated sludge will cause equipment damage such as the rotating rake of the mud scraper, overrunning of the rotary torque, damage to the scraper components, and overload tripping of the drive motor.

After the above abnormalities occur, if the treatment cannot be detected in time and the sludge cannot be discharged normally for a long time, it will cause the blockage of the sludge discharge pipe system and the sewage cannot be treated normally, which will affect the normal operation of the corresponding process system

When the sludge accumulation causes the over-torque damage of the mud scraping and turning mechanism, it is necessary to stop the operation and manually clear the pool, which is time-consuming and laborious, and pollutes the environment

If the desulfurization wastewater is seriously out of service for a long time, it may lead to the failure of the desulfurization slurry ion to exceed the standard, and the environmental protection incidents such as excessive discharge of flue gas

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