Method for processing saponified sewage
A treatment method and saponification technology, which are applied in the field of solid-liquid separation of lime milk residue, can solve the problems of high labor intensity, high concentration of suspended solids, and the influence of the period of sludge cleaning in treatment facilities, so as to prolong the cleaning period of sludge, The direct economic benefits are obvious and the indirect economic benefits are considerable.
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Embodiment 1
[0030] Example 1: Polyaluminum chloride is selected as the flocculant, configured as a 0.1% aqueous solution, stored in the flocculant tank (4), the average treatment water volume of saponified sewage is 300t / h, SS is 6200mg / L, and the addition of the flocculant aqueous solution The amount is 30Kg / h (the addition of flocculant is about 10mg / h Kg污水 ), enter the mechanical acceleration clarifier (1) after being mixed by the mixer I (6), the effective residence time of the control treated water in the mechanical acceleration clarifier is 30 minutes, and the mud settled in the mechanical acceleration clarifier (1) enters the decanter (2) Carry out centrifugal dehydration, and the mud cake after centrifugal dehydration is landfilled with automobiles, and the separated sewage is returned to the mechanical acceleration clarifier (1) for circular clarification; the supernatant in the mechanical acceleration clarifier (1) is mixed with hydrochloric acid The hydrochloric acid sent from ...
Embodiment 2
[0033] Example 2: The flocculant selects polyacrylamide with a solid molecular weight of 14 million, configures it into a 0.2% aqueous solution, and stores it in the flocculant tank (4). The average treatment water volume of saponified sewage is 200t / h, and the SS is 6500mg / L. The addition amount of flocculant aqueous solution is 30Kg / h (the addition amount of flocculant is about 30mg / h Kg污水 ), enter the mechanical acceleration clarifier (1) after being mixed by the mixer I (6), the effective residence time of the control treated water in the mechanical acceleration clarifier is 45 minutes, and the mud settled in the mechanical acceleration clarifier (1) enters the decanter (2) Carry out centrifugal dehydration, and the mud cake after centrifugal dehydration is landfilled with automobiles, and the separated sewage is returned to the mechanical acceleration clarifier (1) for circular clarification; the supernatant in the mechanical acceleration clarifier (1) is mixed with hydroc...
Embodiment 3
[0036] Embodiment 3: Sodium polyacrylate is selected as the flocculant, configured as a 0.5% aqueous solution, stored in the flocculant tank (4), the average treatment water volume of saponified sewage is 200t / h, SS is 6300mg / L, and the addition amount of the flocculant aqueous solution 30Kg / h (the addition of flocculant is about 75mg / h Kg污水), enter the mechanical acceleration clarifier (1) after being mixed by the mixer I (6), the effective residence time of the control treated water in the mechanical acceleration clarifier is 45 minutes, and the mud settled in the mechanical acceleration clarifier (1) enters the decanter (2) Carry out centrifugal dehydration, and the mud cake after centrifugal dehydration is landfilled with automobiles, and the separated sewage is returned to the mechanical acceleration clarifier (1) for circular clarification; the supernatant in the mechanical acceleration clarifier (1) is mixed with hydrochloric acid The hydrochloric acid sent from the tan...
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