Sludge Treatment Method with Sludge Thickening Function and No Maintenance in Tank

Abstract

The invention discloses an inside-maintenance-free sludge storage pond device with a sludge concentrating function and a method. A sludge storage pond is connected with a remanent sludge feeding pipe, a primary settling sludge feeding pipe, an overflow pipe, a high-liquid-level supernate discharge pipe, a middle-liquid-level supernate discharge pipe, a low-liquid-level supernate discharge pipe and a sludge discharge pipe; a first sludge inlet valve and a second sludge inlet valve are respectively arranged on the remanent sludge feeding pipe and the primary settling sludge feeding pipe; a sludge discharge valve is arranged on the sludge discharge pipe; a first supernate discharge valve, a second supernate discharge valve and a third supernate discharge valve are respectively arranged on the high-liquid-level supernate discharge pipe, the middle-liquid-level supernate discharge pipe and the low-liquid-level supernate discharge pipe; and the sludge storage pond is provided with a stirrer, an ultrasonic level gauge and an ultrasonic sludge level meter. The method comprises the following steps: feeding sludge; stirring; carrying out static settling; beginning static settling; and discharging the sludge. The inside-maintenance-free sludge storage pond device is short in construction period and high in assembling speed; a function of storing sludge is fulfilled; solid content of the sludge can be increased remarkably; and pressure of a followed-up concentrating and dehydrating section is relieved.

Description

technical field [0001] The invention relates to a sludge treatment method, more specifically, to a sludge treatment method with the function of sludge concentration and maintenance-free tank. Background technique [0002] At present, there are basically three technical routes for the sludge disposal process of general sewage treatment plants: [0003] 1. The remaining and primary sludge are respectively discharged into the sludge storage tank and mixed, and then enter the sludge concentration and dehydration integrated machine, and the mud cake is transported out or further sludge disposal. [0004] 2. The remaining sludge is discharged into the sludge gravity concentration tank for gravity concentration, and then mixed with the primary sludge and then sent to the sludge storage tank, then into the sludge dehydrator, and the mud cake is transported out or further sludge disposal. [0005] 3. The remaining sludge is discharged into the sludge storage tank and then enters the...

AI Technical Summary

Problems solved by technology

However, the function of the current sludge storage tank is to simply adjust the flow rate, without the function of concentration, and it is generally a concrete cast-in-place structure, and the electrical automatic control needs to be equipped separately. difficult to cooperate

[0007] In addition, for the upgrading and expansion of sewage treatment plants, due to the current situation of sludge storage tanks, it is generally difficult to meet the needs of upgrading and expansion

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