Solidification and stabilization treatment method, product and application of polluted waste sludge
A technology for solidification treatment and waste sludge, applied in sludge treatment, biological sludge treatment, fixed/solidified sludge treatment, etc., can solve the problems of high operation and maintenance cost, excessive heavy metal content, large one-time investment, etc. Reduce dosage, reduce moisture content, and achieve the effect of reuse
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preparation example Construction
[0041] In one embodiment, the preparation method of the curing agent comprises the steps of:
[0042] (4) Collect tailings from waterworks and process them in a high-pressure steam sterilizer at 105°C for 20 to 30 minutes to remove bacteria and other harmful substances in the tailings and reduce their moisture content to 60%-70%;
[0043] (5) The composite material is uniformly mixed with the tailings from the waterworks treated in step (4) according to the dry weight ratio of 5:100~10:100, and the pH of the mixture is adjusted between 7~8. curing and drying;
[0044](6) The material cured in step (5) is made into granules with a particle size of 30-60 mesh, dried at 105° C. to obtain a curing agent, sealed and stored in a dry place.
[0045] After heat treatment, the composite material of clay and cellulose and the tailing sludge of the waterworks are uniformly mixed according to the dry weight ratio of 5:100 to 10:100 to prepare the curing agent, which can obtain the best f...
example 1
[0082] A solidification and stabilization treatment method for polluted waste sludge,
[0083] The tailings of Liupanshui Water Supply Corporation are selected to use Fe salt and Al salt as flocculant raw materials, wherein the content of Fe is 83g / kg, and the content of Al is 245g / kg;
[0084] The clay material selected is sepiolite, and the molecular composition of described sepiolite is Mg 4 Si 6 o 15 (OH) 2 ·6H 2 O;
[0085] A solidification and stabilization treatment method for polluted waste mud, the steps of which are;
[0086] (1) Collect tailings from Liupanshui Water Supply Corporation, and process them in a high-pressure steam sterilizer at 105°C for 20 minutes to remove bacteria and other harmful substances in the waste tailings and reduce its moisture content to 70%.
[0087] (2) making the sepiolite into granular form with a particle size of 50 mesh, and heating it in a muffle furnace at a temperature of 550° C. for 1 hour;
[0088] (3) Weigh an appropria...
example 2
[0120] A solidification and stabilization treatment method for polluted waste sludge,
[0121] The tailings of Liupanshui Water Supply Corporation are selected to use Fe salt and Al salt as flocculant raw materials, wherein the content of Fe is 83g / kg, and the content of Al is 245g / kg;
[0122] The selected clay material is attapulgite, and the molecular composition of said attapulgite is Mg 5 Si 8 o 20 (OH) 2 (OH 2 ) 4 4H 2 O;
[0123] A solidification and stabilization treatment method for polluted waste mud, the steps of which are;
[0124] (1) Collect the tailings from Liupanshui Water Supply Corporation, and process them in a high-pressure steam sterilizer at 105°C for 25 minutes to remove bacteria and other harmful substances in the waste tailings and reduce its moisture content to 65%.
[0125] (2) making the sepiolite into granular form with a particle size of 70 mesh, and heating it in a muffle furnace at a temperature of 800° C. for 1 hour;
[0126] (3) Weig...
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