Process technique for pharmacy wastewater

Abstract

The invention provides a process technology of the pharmaceutical wastewater, which has the steps as follows in turns: preprocess system, ozone disinfection, softening, cartridge filtration, one-pass RO, two-pass RO, ozone disinfection, 254nm ultraviolet disinfection, EDI, active carbon filtration, 185nm ultraviolet disinfection and terminal filter. The invention adopts the disinfecting method combining the ozone and the ultraviolet radiation. The 254nm ultraviolet disinfection can not only function as disinfection but also can remove the remnant ozone and save the ozone removing equipments. The invention adopts EDI instead of the mixed bed resin to realize regeneration while exchanging and produce pharmaceutical water with high quality continuously, and the amount of the ion exchange resin only equals to 5 per cent of the traditional process. Compared with the mixed bed resin, the EDI can realize the continuous effluent, save the regeneration time of the resin and increase the utilization rate of the equipments. The invention combines the EDI and the RO, which effectively reduces the raw water hardness and is beneficial for the EDI membrane stack to operate stably for a long period; at the same time, the invention is beneficial for the fresh chamber water to dissociate and produce enough H+ and OH+, thereby realizing the electrochemical regeneration of the ion exchange resin.

Description

technical field [0001] The invention relates to an environmental protection technology, in particular to a waste water treatment process. Background technique [0002] Water is the most widely used basic raw material in pharmaceutical production. It is used in the production process and preparation of pharmaceutical preparations. Pharmaceutical water is the lifeline of the pharmaceutical industry. Most of the existing pharmaceutical water treatment processes adopt several processes such as multi-stage distillation, high-pressure fractional distillation and centrifugal purification distillation. The main disadvantages are as follows: [0003] 1) All distillation methods are carried out at a high temperature of 120°C. Although completely sterile water can be obtained, the energy consumption during operation is quite large; at the same time, because of the high temperature, all equipment components must withstand high temperatures, and the equipment’s Cost and maintenance cost...

AI Technical Summary

Problems solved by technology

[0003] 1) All distillation methods are carried out at a high temperature of 120°C. Although completely sterile water can be obtained, the energy consumption during operation is quite large; at the same time, because of the high temperature, all equipment components must withstand high temperatures, and the equipment’s High construction and maintenance costs

[0004] 2) Volatile organic pollutants

Because its boiling point is mostly lower than the vaporization temperature of water, if it is not treated, it will easily enter the produced water during the distillation process, and it cannot be effectively removed by simple distillation methods. It must rely on activated carbon adsorption and other filtration methods, which increases the system and water quality. instability