A tar wastewater purification device capable of producing asphalt

Abstract

The invention discloses a tar wastewater purification device capable of producing asphalt. The tar wastewater purification device comprises a raw water pond, a settling pond and a mixing-liquid separation tank which are connected in sequence, wherein the mixing-liquid separation tank is connected with a dimethylsilicone oil tank; a stirring paddle is arranged in the mixing-liquid separation tank; the stirring paddle is started for mixing dimethylsilicone oil with water in the tank, and after the stirring paddle is stopped and the standing process is finished, a dimethylsilicone oil region at the upper part and a water region at the lower part are formed in the tank; an outlet in the bottom of the mixing-liquid separation tank is connected with the inlet of a water storage pond and the inlet of a catalytic reaction kettle with the heating temperature of 180-300 DEG C; a nitrogen inlet and a catalyst inlet are formed in the catalytic reaction kettle; a catalyst tank is arranged at the catalyst inlet; the inlet of a cooler is connected with the outlet of the catalytic reaction kettle; the inlet of a filter is connected with the outlet of the cooler. The tar wastewater purification device is suitable for treating tar wastewater to greatly reduce the content of tar in a water body.

Description

technical field [0001] The invention relates to the technical field of tar wastewater purification, in particular to a tar wastewater purification device capable of producing asphalt. Background technique [0002] The production and processing of petroleum, coal and other minerals often involve water washing, and a large amount of tar wastewater is likely to be generated during the washing process. As the name suggests, the harmful components in tar wastewater are mainly tar, which is a complex compound containing more than one hundred components, including organic substances such as alkanes, aromatic hydrocarbons and colloids. During water washing, some tar substances enter the water body and form tar wastewater. In addition to tar, tar wastewater also contains phenolic substances, ammonia nitrogen substances, cyanide and solid particles. [0003] The purification of tar wastewater is mainly aimed at the removal of tar substances. At present, commonly used tar substance r...

AI Technical Summary

Problems solved by technology

The tar-containing wastewater is directly introduced into the follow-up process. The tar substances will affect the growth of microorganisms in the follow-up biochemical treatment system, making the follow-up biochemical treatment effect poor, and the ammonia nitrogen substances and phenolic substances in the waste water are difficult to further remove, and the COD degradation of the water body is not complete. , unable to meet the national water quality standards

Images