Riverway sludge treatment method
A treatment method and technology for river silt, applied in sludge treatment, biological sludge treatment, water/sludge/sewage treatment, etc. cost effect
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Embodiment 1
[0030] Example 1: A method for treating river silt. First, a grab boat or a dredger is used to grab or blow the silt at the bottom of the river onto a barge, tugboat, or a muddy area on the bank, and then the accumulated silt (including The amount of water is 80wt%, sampling 1 ton) according to the following steps:
[0031] (1) Mechanical dehydration
[0032] ① First settling dehydration: using natural settling for dehydration, the supernatant is removed after settling for 30 minutes to obtain sludge with a water content of 30 wt%;
[0033] ②Second settling and dewatering: before the second settling and dewatering, add flocculant to the sludge, the mass ratio of flocculant to sludge is 3%:1; flocculant includes activated carbon, polyacrylamide and polyaluminum chloride, and flocculant The mass ratio of polyacrylamide to polyaluminum chloride is 0.6:5:1; the supernatant is removed after settling for 10 minutes to obtain a sludge with a water content of 10 wt%;
[0034] ③Centrifugal de...
Embodiment 2
[0043] Example 2: A method for treating river silt. First, a grab boat or a dredger is used to grab or blow the silt at the bottom of the river onto a barge, tugboat or mud area on the bank, and then the accumulated silt (including The amount of water is 85wt%, sampling 2 tons) Follow the steps below:
[0044] (1) Mechanical dehydration
[0045] ①The first settling dehydration: the natural settling dehydration is adopted, and the supernatant is removed after settling for 30 minutes to obtain sludge with a water content of 40 wt%;
[0046] ②Second settling and dewatering: before the second settling and dewatering, add flocculant to the sludge, the mass ratio of flocculant to sludge is 5%:1; flocculant includes activated carbon, polyacrylamide and polyaluminum chloride, and flocculant The mass ratio of polyacrylamide to polyaluminum chloride is 0.8:6:1; the supernatant is removed after settling for 10 minutes to obtain a sludge with a water content of 15 wt%;
[0047] ③Centrifugal dewa...
Embodiment 3
[0056] Example 3: A method for treating river silt. First, a grab boat or a dredger is used to catch or blow the silt at the bottom of the river onto a barge, tugboat or mud area on the shore, and then the accumulated silt (including The amount of water is 90% by weight, and 0.8 tons is sampled.) Follow the steps below:
[0057] (1) Mechanical dehydration
[0058] ①The first settling dehydration: the natural settling is used for dehydration, the supernatant is removed after settling for 30 minutes to obtain a sludge with a water content of 35wt%;
[0059] ②Second settling and dewatering: before the second settling and dewatering, add flocculant to the sludge, the mass ratio of flocculant to sludge is 2%:1; flocculant includes activated carbon, polyacrylamide and polyaluminum chloride, and flocculant The mass ratio of polyacrylamide to polyaluminum chloride is 0.5:4:1; the supernatant is removed after settling for 10 minutes to obtain a sludge with a water content of 18 wt%;
[0060] ...
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