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A sludge and pre-dehydration technology, applied in water/sludge/sewage treatment, sludge treatment, chemical instruments and methods, etc., can solve problems such as long running time, low dehydration efficiency, and limitation of dehydration efficiency, and achieve the degree of automation High, reduced dehydration cost, good dehydration performance
Active Publication Date: 2021-04-06
芜湖海创环保科技有限责任公司
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[0006] The purpose of the present invention is to solve the problem that the dehydration efficiency is limited by the pressure, and the traditional belt filter press is also limited by the operation cycle, and the sludge cannot be dewatered continuously, resulting in too long operation time and low dehydration efficiency
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example 1
[0069] (1) Dewatered sludge comes from municipal sludge, and its initial moisture content is about 85%;
[0070] (2) Pre-condition the sludge in step (1), add a biological enzyme wall-breaking agent, the dosage is 4% of the absolute dry weight of the municipal sludge, stir it evenly with a mechanical stirrer under the condition of 30 ° C, and the pre-conditioning time is 25min;
[0071] (3) The pre-conditioned sludge is evenly distributed on the filter cloth through the feeding system, and the double-layer filter cloth is stacked and distributed in the station tank 5 through the feeding device 1, and then the continuous dehydration process is started.
[0072] Since the control disk 6 is provided with four station cylinders 5, when the station cylinder 5 is filled and reaches the corresponding position of the pre-dehydration device 2 through the rotation of the control disk 6, another idle station cylinder 5 is filled. Move to the corresponding position of the feeding device ...
example 2
[0079] (1) Dewatered sludge comes from industrial papermaking sludge, and its initial moisture content is 90%;
[0080] (2) Pre-condition the sludge in step (1), add biological enzyme wall-breaking agent, the dosage is 7% of the absolute dry weight of municipal sludge, stir it evenly with a mechanical stirrer under the condition of 30 °C, and the pre-conditioning time is 30min;
[0081] (3) The pre-conditioned sludge is evenly distributed on the filter cloth through the feeding system, and the double-layer filter cloth is stacked and distributed in the station tank 5 through the feeding device 1, and then the continuous dehydration process is started.
[0082] Since the control disk 6 is provided with four station cylinders 5, when the station cylinder 5 is filled and reaches the corresponding position of the pre-dehydration device 2 through the rotation of the control disk 6, another idle station cylinder 5 is filled. Move to the corresponding position of the feeding device ...
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Abstract
The invention relates to a sludge continuous dewatering system which is characterized by comprising a feeding device, a pre-dewatering device, a deep dewatering device and a sludge discharging device, sludge is conveyed to the feeding device through a pipeline, the sludge is evenly distributed in the two layers of filter cloth through the feeding device, and the two layers of filter cloth wrapped with the sludge are folded and fed into the station cylinder through the feeding device to serve as materials in the station cylinder. the station cylinder is moved to a pre-dewatering device; the pre-dewatering device is used for squeezing and maintaining the pressure of materials in the station cylinder through a low-tonnage hydraulic machine; the station cylinder is moved to the deep dewatering device; the deep dewatering device carries out squeezing and pressure maintaining on the materials in the station cylinder again through the high-tonnage hydraulic machine; the station cylinder is moved to the sludge discharging device; the sludge discharging device is used for separating the sludge and the filter cloth in the station cylinder, the two layers of separated filter cloth are recycled, and the separated sludge is transmitted to a designated position. Through the system, the automation degree of the system is improved, the dewatering performance is improved, and the dewatering cost of different types of sludge can be effectively reduced.
Description
technical field [0001] The invention relates to the technical field of sludge treatment, in particular to a continuous sludge dewatering system. Background technique [0002] Sludge is an inevitable product of sewage treatment plants. During the treatment of sewage from different sources, a large amount of sludge will be produced, and its moisture content can reach 97%. Among the total construction costs of sewage treatment plants, the cost of sludge treatment accounts for about 20% to 50%, or even as high as 70%. Therefore, sludge treatment is an important part of the sewage treatment system and must be given full attention. As a necessary step in sludge treatment, dehydration plays an important role in reducing the volume of sludge in landfills, facilitating transportation, and saving sludge disposal costs. Therefore, the present invention aims to develop an efficient sludge dewatering device for reducing the disposal cost of sludge from different sources and types. ...
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Application Information
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