For the previous state did not specify the requirements for the discharge of wastewater, resulting in a lot of wastewater is discharged directly, polluting the natural water bodies of rivers, lakes and seas. After the state policy, a lot of laboratory wastewater can not be discharged directly to the outdoors, need to undergo strict treatment before discharge. So, what are the national standards for laboratory wastewater discharge? Today we will take a look at it with you! Different laboratory experimental projects are different, the resulting wastewater is also different, the type of wastewater discharge is also different, but for the provisions of the emissions, there is a fixed value. First, the laboratory wastewater national emission standards 1, the national emission standards National emission standards are developed by the national environmental protection administrative department and applied nationwide or in a specific region. 2, local emission standards Local emission standards are approved and promulgated by the people's governments of provinces, autonomous regions and municipalities directly under the Central Government, applicable in specific administrative regions. 3, industry standards Different industries deal with different standards and requirements, in the non-execution of the national comprehensive sewage discharge standards, the implementation of the corresponding industry standards. Second, the petrochemical laboratory wastewater discharge standards 1. "Comprehensive sewage discharge standards" standards. 2. "GB31570-2015" existing enterprises COD, ammonia nitrogen, TOC and other major indicators of the emission limits required to be more stringent than the "Comprehensive Sewage Emission Standards" for new sources of pollution two ji indicators, ammonia nitrogen is more stringent than the new sources of pollution one ji indicators, while increasing the total phosphorus, total nitrogen and total vanadium control requirements. 3. "Comprehensive Emission Standards for Sewage" in Table 5 of the petroleum refining industry allowable drainage in 1.0~2.5m3/t crude oil, 4. "GB31570-2015" requires that the processing unit crude (material) oil baseline drainage is 0.5m3/t crude oil 5. 2015" new standards, requiring that if the processing of tons of crude oil actual discharge exceeds the limit, must be processed according to the pollutant tons of crude oil baseline discharge will be measured water pollutant concentrations converted to the standard discharge concentration of water pollutants Third, the biopharmaceutical laboratory wastewater discharge standards 1. "Chemical Synthesis Class Pharmaceutical Industry Water Pollutant Discharge Standards" (GB21904-2008) 2. Bio-engineering pharmaceutical industry water pollutant emission standards "(GB 21907-2008) 3." Chinese medicine pharmaceutical industry water pollutant emission standards "(GB 21906-2008) 4." Fermentation pharmaceutical industry water pollutant emission standards "(GB 21903-2008) 5. 5. "Comprehensive Emission Standards for Sewage" (GB 8978-1996) In fact, in different fields, different laboratory wastewater treatment standards are also different. So how can we treat wastewater to meet national standards? In general, according to the characteristics of laboratory wastewater, take different physical or chemical treatment of wastewater, so that it can meet the discharge standards. If the laboratory wastewater water quality is stable, and a single pollutant, you can use a targeted approach to treatment; if the laboratory wastewater water quality is complex, more pollutants, a method is difficult to deal with, you can use a more comprehensive laboratory integrated wastewater treatment equipment for treatment.
Laboratory wastewater treatment equipment can be selected according to the different models of laboratory wastewater wastewater treatment equipment, mainly UPFS-I inorganic type, UPFS-II biological type and UPFS-III integrated wastewater treatment machine. Intelligent environmental protection automation, good depth treatment effect, simple operation, easy maintenance, small footprint, the quality of treated drainage water is better than the comprehensive wastewater discharge standard GB8978-199 in the third level.