Process Design For Treatment Of Hazardous Waster From A Pharmaceutical Company

Hazardous wastes are characterized by high risk and complexity, and their design, construction and acceptance are all complicated. The high barrier of the industry leads to the disposal of the market, and the disposal cost is high.In this paper, the principle of the mainstream of hazardous waste treatment process to do the principle of clarification and comparative analysis of the details of the organic waste liquid recycling technology characteristics, and according to the status of hazardous waste enterprises preliminary program comparison; hazardous waste in detail The whole process of the flue gas treatment process is optimized, the final design is based on pretreatment system?VAR?low nitrogen combustion technology?SNCR?flue gas quenching?dry deacidification And active carbon adsorption?bag dust removal?wet acid deacidification process line, while in the treatment for the production of steam, bring additional economic benefits, the main process design is as follows:For the oxidizer system the waste liquids will be treated mainly, containing the mixed waste liquid from different workshops ?called fuel oil? and waste liquid from 605 workshops. Meanwhile Hydrogen from workshops and waste water will be burned as well. By fault shut down of RTO and Low Temperature Plasma Systems, parts of exhaust air from RTO and Low Temperature Plasma Systems can be bypassed to the VAR system. This is same for the existing boiler, so that the off gas from 605 can also be bypassed to the VAR system.The oxidizer system treats the organic matters in the waste liquid and waste gas with high-temperature oxidation method. Downstream of the combustion system, the heat recovery steam generator ?HRSG? will recovery the heat from the high temperature flue gas and produce saturated steam which will be used in other devices of this plant.Meanwhile, the combustion process uses the low-Nox technology, which will reduce the production of thermal and chemical NOx. with the SNCR on the water wall, it will further reduce the NOx in the flue gas and meet the regulation requirements.The dusts ?including heavy metal? from the combustion of inorganic matters in waste liquid and waste gas will first sedimentation under slow velocity of the water wall flue gas. It will settle down most of the dust in the flue gas. The rest will go into the bag filter house for further cleanning and meet the requirement. Finally, the flue gas will pass through the wet scrubber system to guarantte the dust content is less than the required emission limit.The produced dioxin and acid gases ?SO₃, SO₂, HC1, Cl₂ etc.? from the combustion will go through Venturi reactor after the boiler system. Calcined lime ?reducing the acid gases? and active carbon ?absorbing the dioxin? will be put into the Venturi system and mixed with the flue gas. Removing the acid gases and absorbtion process will be done in the bag filter. The next scrubber system will futher reduce the acid gases. Finally it makes sure the dioxin & acid gases emission limit is less than the required.Meanwhile the design scheme analyzes pollutant discharge standard, and designs and discusses the storage and transportation engineering, public engineering, design project investment return and so on.