With the increasing demand for living environment and the growing awareness of environmental protection, the State Environmental Protection Administration has issued a notice requiring that from January 1, 2005, research, monitoring (testing), research institutes, and other laboratories, laboratories, and test sites be managed according to pollution sources and included in the scope of environmental supervision. As chemists, it is necessary for us to embody scientific research ethics and set a concrete example in our actions to protect the environment.
Sources and types of laboratory wastewater in research institutes
According to the properties of the main pollutants contained in laboratory wastewater from research institutes, it can be divided into organic wastewater, inorganic wastewater, and wastewater containing pathogenic microorganisms. Inorganic wastewater contains heavy metals, heavy metal complexes, acids and bases, sulfides, cyanides, and other inorganic ions; Organic wastewater contains commonly used organic solvents such as organic acids, phenols, ethers, oils, and other substances; The experimental wastewater containing pathogenic microorganisms mainly includes biological laboratory testing wastewater, dissection table flushing wastewater, etc.
According to the main components of pollutants in laboratory wastewater from research institutes, it can be classified into acidic wastewater, alkaline wastewater, heavy metal wastewater, phenol containing wastewater, halogenated wastewater, etc.
According to the different levels of pollutants in laboratory wastewater from research institutes, it can be divided into high concentration experimental wastewater, low concentration experimental wastewater, and non polluted water. High concentration experimental wastewater generally includes liquid expired reagents, liquid experimental waste or intermediate products, and various washing liquids; Low concentration experimental wastewater includes low concentration washing wastewater for experimental instruments and products, as well as various cleaning and sanitation water for the laboratory; Non polluted water includes cooling water, water baths, constant temperature heating water, and other cleaning water used during the experimental process.

The sewage treatment system of Okunlai Laboratory consists of a sewage collection module, an automatic adjustment module, a pretreatment module, an automatic dosing module, a coagulation air flotation mixing module, a coagulation assisted sedimentation module, a settling separation module, a solid-liquid separation module, a sludge drying module, a heavy metal capture module, a filtration adsorption module, a new catalytic activity micro treatment module, an electrochemical catalytic oxidation-reduction patented technology treatment module, a multi-stage advanced decomposition and degradation treatment module, a two-stage organic biological activity treatment module, a new biological reaction treatment module, a composite disinfection treatment and other technical processes, forming a complete laboratory sewage treatment system. The system operation adopts PLC programmable control system, human-machine interface operating system, remote monitoring and operating system, and follows the pre-set program and PH of the PLC controllerThe parameters set by the self-control instrument are automatically operated, and multi-level synchronous online monitoring is carried out. Based on the composition and concentration of different laboratory wastewater, the control system automatically calculates and proportionally dispenses drugs, which is more scientific and rational, ensures treatment efficiency, and saves a lot of drug consumption, achieving no need for dedicated personnel to be on duty.
The sewage treatment equipment of Shandong Okunlai Laboratory adopts different treatment technologies and processes to treat the organic, inorganic, and biological wastewater components and concentrations generated by different laboratories, which can efficiently remove COD BOD、 The treated wastewater, including chromaticity, viruses, organic solvents, and heavy metal ions, can meet the national comprehensive wastewater discharge standards [GB8978-1996]】
The Okunlai laboratory sewage treatment equipment is a set of advanced technology, low operating costs, high degree of automation, efficient treatment, small footprint, simple operation and management, and does not require dedicated personnel for comprehensive sewage treatment in various industry laboratories. It has received unanimous praise from a large number of users and is widely used in scientific research institutions, universities, environmental monitoring departments, product inspection departments, food and drug inspection departments, entry-exit inspection and quarantine, disease control centers, geological and mineral testing centers, analysis and testing centers, water resources monitoring, grain and oil quality inspection, petroleum chemical industry, animal husbandry, agricultural product testing, central blood stations, enterprises and other industry laboratories and laboratory sewage treatment.