Sludge dehydrating agent as well as preparation method and application thereof
A technology of sludge dehydrating agent and water supply sludge, which is applied in the direction of water/sludge/sewage treatment, sludge treatment, chemical instruments and methods, etc., can solve the problems of high cost of water supply sludge and unfavorable industrial production, and achieve a wide range The effect of developing space and application value, improving resource utilization, and reducing processing costs
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Embodiment 1
[0032] 1) The water supply sludge taken from the water supply plant is washed with clean water for 3 times, and filtered to obtain a water supply sludge slurry with a water content of 90%;
[0033] 2) Weigh a certain amount of chitosan and dissolve it with 1% acetic acid solution to obtain a chitosan solution with a concentration of 2%;
[0034] 3) Take the feedwater sludge slurry prepared in step 1) and the chitosan solution prepared in step 2), and mix them at a volume ratio of 1:2 to obtain a mixed solution, and then add epichlorohydrin (ECH) at a concentration of 1 g / L NaOH solution to obtain a solidified cross-linking solution with a volume fraction of 3%, and then add the mixed solution dropwise to the solidified cross-linked solution, and obtain a particle size of 0.4-0.6 cm after curing and cross-linking at 40°C for 8 hours. solid pellets;
[0035] 4) Filter out the solid pellets obtained in step 3), wash them with deionized water, and dry them in a drying oven at 60...
Embodiment 2
[0037] 1) The water supply sludge taken from the water supply plant is washed with clean water for 3 times, and filtered to obtain a water supply sludge slurry with a water content of 90%;
[0038] 2) Weigh a certain amount of chitosan and dissolve it with 1% acetic acid solution to obtain a chitosan solution with a concentration of 3%;
[0039] 3) Take the feedwater sludge slurry prepared in step 1) and the chitosan solution prepared in step 2), and mix them at a volume ratio of 1:2 to obtain a mixed solution, and then add epichlorohydrin (ECH) at a concentration of 1 g / L NaOH solution to obtain a solidified cross-linking liquid with a volume fraction of 2%, and then add the mixed solution dropwise to the solidified cross-linked liquid, and obtain a particle size of 0.4-0.6 cm after curing and cross-linking at 50°C for 12 hours. solid pellets;
[0040] 4) Filter out the solid pellets obtained in step 3), wash them with deionized water, and dry them in a drying oven at 60°C ...
Embodiment 3
[0042] 1) The water supply sludge from the water supply plant is washed with clean water for 3 times, and filtered to obtain the water supply sludge slurry with a water content of 80%;
[0043] 2) Weigh a certain amount of chitosan and dissolve it with 1% acetic acid solution to obtain a chitosan solution with a concentration of 1%;
[0044] 3) Take the water supply sludge slurry prepared in step 1) and the chitosan solution prepared in step 2), and mix them at a volume ratio of 1:2 to obtain a mixed solution, and then add epichlorohydrin (ECH) at a concentration of 3g / A volume fraction of 4% of the solidified cross-linking solution was obtained in a NaOH solution of 1 L, and then the mixed solution was added dropwise to the solidified cross-linked liquid, and solid particles with a particle size of 0.5 cm were obtained after curing and cross-linking at 60°C for 6 hours. ball;
[0045] 4) Filter out the solid pellets obtained in step 3), wash them with deionized water, and dry...
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