Continuous deep dehydration all-in-one machine and deep dehydration process

Abstract

A continuous deep dehydration all-in-one machine and a deep dehydration process are disclosed. The machine is characterized by being mainly composed of a concentration area, an unpowered mixer, a pre-pressing area, a squeezing area and a discharging area, and the concentration area is composed of a dynamic mixer and a concentration dehydrator; the unpowered mixer is mainly composed of a tank body,a baffle plate and a screen; the pre-pressing area is mainly composed of a dewatering roller body, an upper filter screen and a lower filter screen; the squeezing area is mainly composed of an upperlining belt, an upper filter screen, a lower filter screen, a lower lining belt and a pressurizing assembly; and the discharging area is mainly composed of an upper discharging roller, a lower discharging roller, an upper scraper and a lower scraper. A pipeline static mixer is arranged on a sludge feeding pipe, an agent A and an agent B are added into the pipeline static mixer, and an agent C is added into the unpowered mixer. The moisture content of the squeezed sludge is less than 50%, and the equipment automatically and continuously operates; and compared with separated secondary continuousdeep dehydration, the power consumption is reduced by about 30%, and the medicament consumption is reduced by 50% or above.

Description

technical field [0001] The invention relates to a continuous deep dehydration integrated machine and a deep dehydration process, which are mainly used in sewage treatment plants, paper mills, chemical plants, pharmaceutical factories and other occasions that require separation of solid phase and liquid phase, and especially relate to continuous deep dehydration of sludge. [0002] technical background [0003] A large amount of sludge will be generated during the operation of the sewage treatment plant. Traditional sludge dewatering equipment, such as ordinary belt conveyors, centrifuges and screw stackers used in large quantities, can only reduce the moisture content of sludge to about 80%. High efficiency, bulky volume, good fluidity, which brings difficulties to transportation and back-end disposal. The box-type diaphragm filter press can reduce the moisture content of sludge to less than 60%, but there are intermittent operation of equipment, complicated auxiliary equipmen...

AI Technical Summary

Problems solved by technology

[0003] A large amount of sludge will be generated during the operation of the sewage treatment plant. Traditional sludge dewatering equipment, such as ordinary belt conveyors, centrifuges and screw stackers used in large quantities, can only reduce the moisture content of sludge to about 80%. High efficiency, bulky volume, good fluidity, which brings difficulties to transportation and back-end disposal. The box-type diaphragm filter press can reduce the moisture content of sludge to less than 60%, but there are intermittent operation of equipment, complicated auxiliary equipment, and equipment infrastructure construction High requirements, high labor intensity and other issues

[0004] For traditional sludge dewatering equipment that is already in operation, such as ordinary belt machines, centrifuges and screw stackers, adding continuous deep dewatering equipment at the back end can not only make use of existing equipment and workshops, but also reduce the amount of transformation and avoid excessive impact On-site normal production, and the whole system can achieve automatic continuous operation, but the secondary continuous deep dewatering of sludge separates the front-end preliminary dehydration from the back-end deep dehydration, and there will be transitional equipment such as conveyor belts and mixers in the middle. These devices are always in a state of power consumption. In addition, in the second continuous deep dehydration process, the dosing of the front-end preliminary dehydration equipment and the rear-end deep dehydration equipment are often considered separately, and the matching of dosing is rarely considered comprehensively, especially after the front-end preliminary dehydration The moisture content of the sludge is about 80%, and it is difficult to mix the sludge and chemicals evenly, which often leads to a large consumption of chemicals

Images