Compound coagulant

Abstract

The invention relates to a compound coagulant, which is prepared by jointly mixing the following raw materials by mass percent: 20%-30% of aluminum chloride, 1.0%-2.5% of poly dimethyl diallyl ammonium chloride, 5%-20% of aluminum sulfate, 1%-10% of ferric chloride, 0.03%-0.1% of cation PAM, and 50%-65% of deionized water. The compound coagulant has the beneficial effects that heavy metals and organic matters in an organic complex are removed through multiple actions, and the compound coagulant also has discolored action and a wide drug action range, can substitute a plurality of coagulants and is convenient to operate.

Description

technical field [0001] The invention relates to a composite coagulant and belongs to the technical field of wastewater treatment. Background technique [0002] With the continuous development of new wastewater treatment technologies and wastewater reuse technologies, the application of coagulants in wastewater treatment is becoming more and more extensive, while the technology of rare earth mining and rare earth deep processing is constantly changing and improving, resulting in the complexity and deterioration of industrial wastewater. The normal operation of the existing rare earth processing technology puts forward higher requirements, and with the continuous improvement of the national water quality discharge standard, the effluent of the water treatment system does not meet the standard has become the first major obstacle to its operation. How to reduce and remove the Indicators such as heavy metals, ammonia nitrogen, and organic matter have become the most concerned res...

AI Technical Summary

Problems solved by technology

These pollutants are mainly treated by traditional medicaments by adjusting PH, redox and other methods, so that the heavy metals and organic matter in the wastewater can be separated from the water, but the removal effect of these medicaments is poor, the function is single, and the efficacy is low. It does not have the function of removing heavy metals, ammonia nitrogen, and organic matter to meet the standard; it can be helped by introducing coagulants and coagulants later. The existing coagulation aids (polyaluminum chloride, polyaluminum ferric chloride, etc.) In the face of complex complexes that are difficult to handle, the demand cannot be met, and the chroma of the effluent water is higher when the iron salt coagulant is used, and the alum flowers formed by the aluminum salt coagulant are relatively loose