Compared with the single-stage pump feeding of the jade filter, compared with the separate feeding of the compressor, it has the advantages of simple system and convenient operation. The disadvantage is that the power consumption is large and the feeding time is relatively long.
Taking the 500m3 press supply as an example, the single-stage pump supplies the material, is equipped with a mud pump, the motor power is 55kw, and the matching mixing barrel b3000 is equipped with a stirring motor power of 15kW. The air compressor supplies materials separately and needs to be equipped with an air compressor with a motor power of 22kW. The valve opens and closes frequently, so a hydraulic valve must be used for automatic control. This part increases the power by about 6kW. The working time of the filter press feed pump accounts for about 70%-75% of each cycle. The entire power consumption of the compressor is supplied by a single flush. The material is about 60% of the material supplied by the single-stage pump. The air compressor supplies a single type of material and the properties of the artificial slurry are uniform and stable, and the Goller air-coated slurry can be used for stirring. It can be blown at the final stage of the filter press to squeeze out the residual moisture in the filter cake to achieve the purpose of reducing the moisture content of the product. . In terms of the number of equipment, compared with the single-stage pump supply, the compressor alone supplies material, eliminating the need for a feed pump and a mixing barrel, and adding an air storage tank, a required storage tank, and an air compressor. The equipment investment is almost the same. big. In terms of the layout of the wide room, the compressor supplies materials separately, which takes up a large space in the factory and requires high investment in civil engineering. When the air compressor supplies material alone, the slime water is completely enclosed in the storage tank and pipeline, which has little impact on the environment of the filter press workshop and will not cause environmental pollution. When the single-stage pump supplies materials, when the incoming material pressure is high and the circulation is started, the coal slime water often splashes onto the floor. This is one of the reasons why the filter press workshop gives the impression that coal slime water is everywhere and the environment is poor.
Through the above analysis, comparison, and on-site usage investigation, it is recommended to use single-stage pump feeding for small coal preparation plants and coal preparation plants with low automation levels. In large, automated and well-managed coal preparation plants, Factory, using air compressor to supply materials separately will be better than other feeding methods.
The sludge treatment plant uses burp Membrane Filter Press technology, which reduces the moisture content of the filter cake. Generally, the moisture content of the filter cake is between 50% and 58%. The filter cake is hard and lumpy, and does not require drying. Direct landfilling, incineration, brick making and greening fertilizers reduce sludge storage sites, significantly save transportation costs, improve land use efficiency, and achieve a circular economy. The moisture content of the filter cake is reduced, and the water taken away by the filter cake is significantly reduced. The filtered water can be reused as reclaimed water, saving precious water resources.
Therefore, membrane filter press will be widely used in the sludge deep dewatering industry. With the development of technology and market, especially in the era of developed information, all industries attach great importance to economic and environmental benefits, which also makes people fully aware of the importance of environmental protection. If products and technologies want to gain users Recognition requires a lot of processes, and this is especially true for membrane filter presses to be widely used in the sewage sludge treatment industry.
The manufacturing technology of domestic filter companies has progressed rapidly, and the production technology and quality have been greatly improved. The gap with foreign countries is getting smaller and smaller. The manufacturing level of large and medium-sized filter machines has been close to or reached the foreign level, and the technology of membrane filter press has also been improved. With simultaneous development, domestic membrane filter technology has become increasingly mature and has been well promoted. With the improvement of the technology and quality of domestic filter presses and the rapid development of the sludge dehydration industry, membrane filter presses are widely used in most sewage treatment. According to user feedback, after using the membrane filter press, the sludge The dehydration efficiency has been greatly improved, good economic benefits have been achieved, and it has been well received by the majority of users.
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