Today I will explain to you the topic of general requirements for the collection of general waste liquid in the laboratory. Generally speaking, the treatment of waste liquid in the laboratory adopts different methods according to its nature and composition. Such as recycling, direct discharge, discharge after treatment, etc.

Laboratory waste liquid should be treated differently according to the nature, composition and pollution degree of the waste liquid. When the sewage is discharged into the surface water body or urban drainage system, it should comply with the regulations in GB 50015-2003 Chapter 4, GB 8978, and GB 20425. Biosafety laboratory waste liquid should also comply with the regulations in GB 50346 and GB 19489. The treatment of waste liquid containing radionuclides shall also comply with the relevant regulations of GB 18871. The anti-seepage treatment of waste liquids that have corrosive effects on the surface should implement relevant national regulations.

The requirements for general waste liquid collection in general laboratories have the following procedures:

Laboratory waste liquid and waste disposal regulations.

1 Division of responsibilities:

1.1 Person in charge of the testing room: Responsible for organizing the treatment of waste liquid and waste in the laboratory, and supervising and inspecting the treatment of waste liquid and waste in the laboratory.

1.2 Inspector: implement the laboratory waste liquid and waste disposal regulations.

2 Content:

2.1 Waste liquid discharge requirements: When the waste liquid is discharged into surface water bodies and urban drainage systems, it shall comply with the regulations in the "Industrial "Three Wastes" Discharge Trial Standard" (GBJ4-73) and other relevant discharge requirements.

2.2 Principles of Waste Liquid Treatment.

2.2.1 There are mainly two treatment methods: physical method and chemical method.

2.2.2 The physical method uses physical action to separate suspended solids in water.

2.2.3 The chemical method is the use of chemical reactions to treat dissolved or glued substances in the waste liquid.

2.2.4 Combining the reality of drug testing work, drugs are composed of different chemical substances, and many different chemical reagents are used. Chemical methods can be used to add a certain amount of neutralizing (or redox) reagents to purify wastewater. The specific discussion is as follows:

2.3 Waste acid water treatment method: After treatment, control the PH value in the range of 6-9 to make it neutral.

2.3.1 Use spent alkali to neutralize.

2.3.2 Put in neutralizer.

2.4 Treatment method of alkaline wastewater: After treatment, control the PH value in the range of 6-9 to make it neutral.

2.4.1 Use waste acid to neutralize.

2.4.2 Put in neutralizer.

2.5 Toxic reagent waste liquid treatment method: Toxic waste liquid can be added with certain chemical reagents or strong acids and alkalis, after destroying its chemical structure, pour it into the sewer for removal.

2.6 Waste treatment methods: Laboratory waste mainly comes from the packaging glass bottles and cartons of medicines and reagents; equipment repairs, replacement of discarded parts; samples and utensils damaged in experiments; the following treatment methods are commonly used:

2.6.1 General waste should be stored in trash baskets and sent to designated locations for centralized treatment on a regular basis.

2.6.2 The expired and invalid medicines should be concentrated in coal (gas) oil and burned to avoid poisoning by humans and animals.

2.6.3 The laboratory should set up waste liquid bins and trash baskets, marked with eye-catching color codes, so that the laboratory personnel can place them in a concentrated manner without causing pollution.

2.6.4 A special person should be designated to handle the waste liquid and waste, and complete the processing registration.

Judging from the above description, the collection of general waste liquid in the laboratory is an important and inevitable part of the whole work of the laboratory. If you are also confused about the collection of waste liquid in the laboratory, you may wish to learn about Beijing Australia The green laboratory solution of Wei instrument is mainly divided into liquid chromatography solvent safety bottle caps, which can efficiently filter dust in the air, prevent mobile phase contamination, and ensure the accuracy of analysis results; when the chromatographic instrument stops working, it prevents the mobile phase from passing through. The vent volatilizes outward to protect the laboratory environment from pollution.

There are also laboratory intubation type and funnel type waste liquid collection devices, which are used for waste liquid collection during the experiment. The exhaust gas filter can efficiently adsorb harmful gases to protect the health of the experimenters. Rechargeable liquid level alarm to prevent liquid overflow. Various types of secondary containers prevent secondary pollution and meet regulatory requirements.