Method for dynamically controlling continuous feeding in dehydration of papermaking sludge

Abstract

The invention discloses a method for dynamically controlling continuous feeding in the dehydration of papermaking sludge, which comprises the following process steps: 1) mixing and stirring concentrated aerobic biological sludge and the papermaking sludge to form mixed sludge; 2) adding an inorganic polymer coagulant into the uniformly-stirred mixed sludge continuously and stirring for performing a reaction; 3) conveying the reacted mixed sludge to a secondary flocculation reaction barrel by utilizing a sludge screw pump, adding the organic polymer coagulant into the mixed sludge continuously, and simultaneously, stirring to perform a flocculation reaction; and 4) performing filter-pressing and dehydration on the mixed sludge after the flocculation reaction in a filter press. The method has high dehydration efficiency, stable dehydration performance, simple process, no secondary pollution, no need of special drying equipment, economy conservation and low cost.

Description

Technical field [0001] The invention relates to a continuous feeding dynamic control method for sludge dewatering, in particular to a method for centralized treatment of sludge produced by waste paper-making wastewater treatment. Background technique [0002] When the moisture content of the sludge is above 85%, the sludge is in a fluid state, and the remaining sludge produced by aerobic aeration process has a higher moisture content and becomes a fluid state; when the moisture content of the sludge is 65%-85%, it is in a plastic state; At 60%, it is solid. In the sewage treatment process, the water content of the sludge is often higher than 95%, and subsequent treatment is difficult. In order to facilitate the transportation, treatment and disposal of the sludge, the sludge needs to be dehydrated. The moisture content of conventional sludge after dewatering is still quite high, generally around 80%. The sludge processing capacity is large, and it is difficult to concentrate acc...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the disadvantages of high energy consumption, low dehydration rate, large loss of equipment and secondary pollution in the existing sludge dewatering method, the present invention provides a continuous feed dynamic control method for papermaking sludge dewatering method, the method has high dehydration efficiency, simple process, no secondary pollution, no need to use special drying equipment, saving economic cost and low

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