Efficient sludge drying system for sewage treatment

Abstract

The invention discloses an efficient sludge drying system for sewage treatment. The efficient sludge drying system comprises a temporary storage tank, a reaction kettle, a centrifugal tank and a forming tank, a tray is arranged at the bottom of the centrifugal tank, the tray is fixedly connected with the centrifugal tank, and a tank cover is detachably mounted at the top of the centrifugal tank; a circle of filter screen is arranged in the centrifugal tank, the filter screen is fixedly connected with the tray, a turntable is arranged in the middle of the filter screen, and the turntable is rotationally connected with the tray; sludge is conveyed to a reaction kettle from a temporary storage tank, a flocculating agent and the like are added, and the sludge enters a centrifugal tank and a forming tank in sequence after a certain time and is subjected to preliminary dehydration and drying forming respectively; wherein a scraping plate is arranged in the centrifugal tank, so that a large amount of sludge can be prevented from being solidified on the inner side of a filter screen, the elongation of the scraping plate is controllable, the position of the scraping plate can be flexibly adjusted according to the sludge dewatering time and the change of the water content, and the optimal dewatering effect can be achieved with the minimum energy consumption.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a high-efficiency sludge drying system for sewage treatment. Background technique [0002] With the development of social economy, the amount of sludge produced in the production process of sewage treatment plants is increasing. The usual treatment square pipe is to transport the sludge to the Burning after secondary drying in thermal power plants. Sludge with 80% water content has a strong odor and putrid smell, which is inconvenient to transport, easily causes environmental pollution, and consumes energy. Moreover, the content of solid impurities in the wastewater generated during the primary drying process is still high, which is not conducive to Subsequent sewage treatment. As a commonly used sludge drying equipment, the filter press is easy to block the feed port of the filter frame, the filter cake is not easy to take out, cannot run continuously, the...

AI Technical Summary

Problems solved by technology

Sludge with 80% water content has a strong odor and putrid smell, which is inconvenient to transport, easily causes environmental pollution, and consumes energy. Moreover, the content of solid impurities in the wastewater generated during the primary drying process is still high, which is not conducive to Subsequent sewage treatment

As a commonly used sludge drying equipment, the filter press is easy to block the feed port of the filter frame, the filter cake is not easy to take out, cannot run continuously, the processing capacity is small, the working pressure is low, and the square plate of ordinary material is not pressure-resistant and easy to break. The filter cloth consumes a lot, and the plate and frame are difficult to be unattended, and the filter cloth often needs to be cleaned manually

At the same time, the plate and frame filter press needs to be guarded by a special person, with poor automation, many moving parts, instability, low equipment investment, difficult maintenance, complicated operation, special management, and short service life.

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