System of taking residual ammonia water as cooling circulating supplementing water

Abstract

The invention belongs to the technical field of wastewater treatment and provides a system of taking residual ammonia water as cooling circulating supplementing water. The system comprises a heat exchange device, a cooling tower, a water collecting pond, a mid-sedimentation tank, a sludge pond, a water supplementing pond and filter equipment. By taking residual ammonia water in a coal chemical industry or other industrial wastewater or household sewage as the supplementing water of a cooling circulating system, a cooling water system and a biochemical system are organically combined to become a brand new system and process of taking residual ammonia water as cooling circulating supplementing water, so that the problem of environmental pollution caused by industrial wastewater, in particular chemical wastewater is solved, the problems that the sewage treatment in the chemical industry is high, the treatment difficulty is great and the wastewater is discharged without reaching the standard are solved. Meanwhile, the wastewater can be also recycled.

Description

technical field [0001] The invention relates to the technical field of waste water treatment, in particular to a system for using surplus ammonia water as water supplement for cooling cycle. Background technique [0002] Sewage treatment in coal chemical industry, papermaking, leather, printing and dyeing, pharmaceutical and other industries is recognized as the most difficult problem to deal with. The treatment costs are high, the discharge is not up to standard, the phenomenon of illegal discharge in the industry is serious, the heavy metal exceeds the standard, the content of organic matter is high, and the smell is unpleasant. People's lives and health are seriously threatened. The authorized notification number is CN 102674393 B, which discloses a method for recycling and treating waste ammonia water. That is to say, the waste ammonia water generated during the purification and distillation of liquid ammonia is properly controlled by continuously adding desalted water ...

AI Technical Summary

Problems solved by technology

That is to say, the waste ammonia water generated during the purification and distillation of liquid ammonia is properly controlled by continuously adding desalted water or pure water to it, and the suspended solids are filtered to obtain the treated waste ammonia water, which is then used as an acid regeneration unit The process of adding medium is used, thereby reducing the outsourced treatment of waste ammonia water, and at the same time reducing production and operation costs and environmental burdens; but it cannot treat other sewage, and it only reduces the discharge of waste ammonia water, and has not achieved zero emission

[0003] In the application publication number CN 102179134 A, an ammonia water recovery device is disclosed, which includes a gas buffer tank, a vacuum unit connected to the gas buffer tank, a first absorption tower connected to the vacuum unit, and a first absorption tower connected to the first absorption tower. The adsorption tank and storage tank; the invention has undergone multi-stage ammonia gas absorption and ammonia recovery treatment, so the absorption and recovery effect is excellent, and the exhaust gas concentration after absorption is ≤1mg / m 3 , purification efficiency ≥ 99%, lower than China (GB14554-93) comprehensive discharge standard for odor pollutants level 1.0mg / m 3 ;Secondary 1.5mg / m 3 , the discharge rate is less than or equal to the standard of 4.9 kg / h at a height of 15 meters; but this invention does not completely recycle ammonia, and does not achieve zero discharge

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