Integrated process method for steel plant comprehensive wastewater sludge dehydration and ceramsite firing raw material preparation
A technology for comprehensive wastewater and sludge dewatering, applied in the field of wastewater and sludge dewatering, can solve the problems of high treatment cost and unsuitable for dewatered sludge treatment, achieve low energy consumption, save grinding costs, and reduce sludge storage. Effect
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Embodiment 1
[0040] The integrated process method of iron and steel plant comprehensive wastewater sludge dehydration and ceramsite firing raw material preparation provided in this embodiment includes the following steps:
[0041] 1) The underground excavation depth is about 1m, and the area is about 100m 2In the ground pit, put the comprehensive wastewater sludge mass with a moisture content (measured by constant temperature drying at 105°C, the same below) of about 60% (the following percentages are all mass percentages), and the laying depth is about 15cm. Add a layer of active Lime block on the surface of sludge clumps; continue to lay about 15cm thick sludge clumps and a layer of sludge clumps, repeat 5 times, and finally add a layer of 15cm sludge clumps, the total amount of active lime used is sewage 25% of the total mass of mud lumps, and use excavation equipment to displace 100m 2 pit compaction;
[0042] 2) Put the pressure pit to stand still for 24 hours to realize the slaking...
Embodiment 2
[0050] The integrated process method of iron and steel plant comprehensive wastewater sludge dehydration and ceramsite firing raw material preparation provided in this embodiment includes the following steps:
[0051] 1) The depth of excavation underground is about 1.2m, and the area is about 110m 2 In the ground pit, put the comprehensive wastewater sludge lump with a moisture content of about 80%, and lay it at a depth of about 20cm, add a layer of active lime on the surface of the sludge lump; continue to lay a 20cm thick sludge lump and a layer of sludge Mud agglomerate, repeat 4 times, and finally add a layer of 20cm sludge agglomerate, the total amount of active lime used is 30% of the total mass of sludge agglomerate, and utilize the self-weight of excavating equipment to remove 110m 2 pit compaction;
[0052] 2) Put the pressure pit to stand still for 36 hours to realize the slaking of the sludge and lime mixture, and reduce the water content to about 22%;
[0053] 3...
Embodiment 3
[0060] The integrated process method of iron and steel plant comprehensive wastewater sludge dehydration and ceramsite firing raw material preparation provided in this embodiment includes the following steps:
[0061] 1) The underground excavation depth is about 1.1m, and the area is about 120m 2 In the ground pit, put the comprehensive wastewater sludge lump with a moisture content of about 70%, lay the depth of about 18cm, add a layer of active lime block on the surface of the sludge lump; continue to lay 18cm thick sludge lump and a layer of sludge Mud agglomerate, repeat 4 times, and finally make up a layer of 18cm sludge agglomerate, the total amount of active lime used is 28% of the total mass of sludge agglomerate, and utilize the self-weight of excavating equipment to dig 120m 2 pit compaction;
[0062] 2) Leave the press pit for 40 hours to realize the slaking of the sludge and lime mixture, and reduce the water content to about 24%;
[0063] 3) The main component o...
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Abstract
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