Pretreatment device for removing waste sundry goods from coal chemical industry wastewater

Abstract

The invention discloses a pretreatment device for removing waste sundry goods from coal chemical industry wastewater. The pretreatment device comprises a pretreatment tank body I and a pretreatment tank body II, wherein a water equalizing screen tray is fixedly arranged right below a water inlet end along the horizontal direction, a screening conveying belt is horizontally arranged right below a tray body of the water equalizing screen tray, an oblique scraper plate is further tightly attached to a left end point of the screening conveying belt on the circumference of a follow-up delivery wheel, a rectangular screen filter screen hood is fixedly arranged on the internal wall of the top side of a tank body of the pretreatment tank body II corresponding to a right-below position communicating with a conduit, and a fine filter fabric belt sequentially passes through a filter fabric releasing motor and four guiding fixed pulleys and is wound on an output end shaft of a filter fabric coiling motor. According to the pretreatment device, due to four times of impurity removal operation, the pretreatment effect of granular impurities of the coal chemical industry wastewater is greatly guaranteed, the operation is simple and convenient, and higher operating requirements of industrial water treatment are met.

Description

technical field [0001] The invention relates to the related technical field of industrial environmental protection equipment, in particular to a pretreatment device for removing waste and sundries from coal chemical industry wastewater. Background technique [0002] Coal chemical industry uses coal as raw material, transforms coal into gas, liquid and solid products or semi-products through chemical processing, and then further processes them into chemical and energy products; coal chemical industry consumes a lot of water resources and produces a lot of waste water, so , water-saving technology and sewage treatment technology have become the key to the development of the industry. The composition of coal chemical wastewater is complex and contains solid suspended particles, ammonia nitrogen and sulfide and other toxic and harmful substances. Water, therefore, wastewater treatment is a problem that all coal chemical projects need to consider, and it also determines the benef...

AI Technical Summary

Problems solved by technology

[0002] Coal chemical industry uses coal as raw material, transforms coal into gas, liquid and solid products or semi-products through chemical processing, and then further processes them into chemical and energy products; coal chemical industry consumes a lot of water resources and produces a lot of waste water, so , water-saving technology and sewage treatment technology have become the key to the development of the industry. The composition of coal chemical wastewater is complex and contains solid suspended particles, ammonia nitrogen and sulfide and other toxic and harmful substances. Water, therefore, wastewater treatment is an issue that needs to be considered in all coal chemical projects, and it also determines the benefits of the entire project to a large extent. In the preliminary stage of wastewater treatment, it is necessary to carry out pretreatment operations for the removal of impurities in wastewater, but The previous pre-cleaning device hastily discharged the wastewater after only one simple filtration, resulting in a large part of the particulate impurities in the wastewater still remaining in the water body, and the impurity removal effect was very poor, and after a period of purification operation, some filters The mesh on the cloth belt is blocked or has other failure problems. It is necessary to disassemble the machine as a whole to replace the filter cloth. The entire disassembly process is cumbersome and complicated, which affects work efficiency and cannot meet higher requirements. Problems need to be solved.

Images