Treatment method of high oil content wastewater sludge

Abstract

The invention relates to a treatment method of high oil content wastewater sludge. The method comprises the steps of preparing a flocculant: injecting water and polyacrylamide (PAM) cations into a PAMdissolving tank in proportion, starting a solution stirrer for stirring, and evenly mixing to obtain a solution; preparing sludge: conveying high oil content organic sludge and inorganic sludge of coking wastewater into a sludge mixing tank; carrying out material transportation: transporting the sludge prepared in a sludge preparation tank into a sludge reaction tank, and conveying the flocculantsolution in the PAM cation dissolving tank into the sludge reaction tank; stirring and flocculating: starting an agitator of the sludge reaction tank, starting a sludge pump when the floc is found inthe sludge reaction tank, and transporting the flocculated material into a filter press; carrying out drying treatment: sending sludge settled by a flocculation reaction into the filter press and carrying out sludge-water separation, and the transporting the sludge, subjected to filter pressing, to a phenol cyanide stockyard for performing ore blending treatment. The method provided by the invention has the characteristics of being good in solid-liquid separation effect of the sludge, good in filter pressing performance, less in reagent consumption, and the like.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment technology, and relates to a method for treating coking wastewater with high oily wastewater sludge. Background technique [0002] Sludge treatment is an important part of the coking wastewater activated sludge biochemical treatment method. During the sludge treatment process, the sludge needs to be concentrated, and then solid-liquid separation is carried out, and the dried sludge after pressure filtration is transported outside for treatment. Prepare two sets of raw sludge treatment system ( figure 1 ), corresponding to the treatment of organic sludge and inorganic sludge. When pressing organic sludge, it is pumped to reaction tank 1, where PAM is added for flocculation, and then sent to belt filter press 1 for pressing; when inorganic sludge is pressed, it is pumped to reaction tank 2, where PAM is added Flocculation is carried out, and then sent to the belt filter press 2 for pr...

AI Technical Summary

Problems solved by technology

When dealing with organic sludge with high oil content during production and operation, there are large chemical consumption (PAM cations), poor flocculation effect, small amount of mud, easy adhesion of sludge to the filter belt of the belt filter press, large amount of flushing water, and Easy to damage, frequent maintenance, low production efficiency, high operating cost and other problems

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