Flocculant effect

    Flocculant is able to reduce or eliminate the water dispersed particles sedimentation stability and aggregation stability, scatter particles condensed condensed, aggregate and removal of a class of substances. Flocculant in wastewater treatment field as a means of solid-liquid separation, can be used to strengthen the sewage first sedimentation, flotation process, and secondary precipitation, after the activated sludge process can also be used for wastewater tertiary treatment or depth. When used in excess sludge dehydration before toning, flocculant and coagulant aid becomes the sludge conditioner or dehydrating agent.

    In the application of traditional flocculant, can use the method of adding the coagulant aid to strengthen flocculation effect. Such as activated silicic acid as ferrous sulfate, aluminum sulfate and other inorganic flocculant sequence dosing coagulant aid and points, and can obtain very good flocculation effect. Therefore, inorganic polymer flocculant IPF is actually the coagulant aid and flocculating agent preparation and merge together and to simplify the operation of the user.

    Coagulation treatment is usually placed in the solid-liquid separation facilities before the combination and separation facilities, effectively remove the particle size of 1 nm to 100 nm in the raw water of suspended matter and colloid material, reduce the effluent turbidity can be used in the pretreatment of the wastewater treatment process, deep processing, can also be used to deal with the surplus sludge. Coagulation treatment can effectively remove the microorganisms in the water, pathogenic bacteria, and can remove the emulsified oil in the wastewater, chromaticity, heavy metal ions and other pollutant, using coagulation sedimentation treatment of wastewater containing phosphorus removal rate can be as high as 90% ~ 90%, is the most cheap and efficient methods of phosphorus removal.

    The mechanism of the flocculating agent

    The water surface hydration and charged colloid particles of tiny, has the stability, polyacrylamide flocculant dosing to water after hydrolysis into charged colloid and its surrounding an ion of electric double layer structure of micelle. With the method of drug delivery after rapid mixing, promote colloidal particles and impurities in water flocculant hydrolyzed to the micelle opportunities and collision frequency. The impurity particles in the water under the action of flocculant, first loss of stability, and then condensed into larger particles size, each other to sink or float upwards in the separation facilities.

    Prompt flocculant rapidly spread into the water and mix with all the waste water mixing process is. The impurity particles in the water and flocculating agent, neutralization using compressed double electric layer and the electric mechanism, such as lost or reduce the stability, generate micro flocculated grain process called condensation. Flocculant together generate micro grain under agitation bridge material and water, through the adsorption mechanism of bridge and sediment trap grow into big flocs process known as flocculation. Mixed flocculant, condensation, and will rise as the coagulation and mixing process are usually performed in a mixed pool, coagulation and flocculation in the reaction in the pool.