System and method for comprehensive laboratory wastewater treatment

Abstract

The invention discloses a system for comprehensive laboratory wastewater treatment. The system comprises a pretreatment unit, a neutralizing and equalizing tank, a hydrolysis-acidification tank, an aerobic MBBR tank, a sedimentation tank and a disinfection tank which are sequentially connected, and a spherical suspended biofiller and powdered activated carbon are added into the aerobic MBBR tank,wherein the pretreatment unit comprises four treatment channels which are a high-concentration organic waste liquid channel, a general laboratory wastewater channel, a heavy metal ion wastewater channel and a toilet wastewater channel respectively. The system and a method for comprehensive laboratory wastewater treatment adopt a classification collection, hydrolysis acidification, aerobic MBBR andchlorine dioxide disinfection treatment process. The method can greatly improve the treatment effect of laboratory wastewater and reduce the construction and operation cost of sewage treatment facility, and is a new laboratory wastewater treatment process worthy of promotion.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a comprehensive laboratory wastewater treatment system and method. Background technique [0002] In recent years, with the continuous construction and expansion of colleges and universities, the number of students has also continued to increase, the number of biochemical laboratories has increased accordingly, and the amount of wastewater discharged from laboratories has increased. The composition of wastewater discharged from the laboratory is quite complex, containing organic matter, inorganic salts, pathogens (parasite eggs, pathogenic bacteria, viruses, etc.), floating and suspended matter, acid-base, heavy metal ions, etc. This type of wastewater has the characteristics of small water volume, indeterminate discharge cycle, and complex water quality components. These wastewaters are directly discharged into surface waters without treatment, which will inevitably ...

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Problems solved by technology

[0003] The laboratory wastewater treatment system must have flexible and diverse treatment processes, and has extremely strict requirements on the system's treatment efficiency and secondary pollution. At present, the methods used for this type of wastewater treatment in the industry are relatively primitive, with single technical means and many secondary pollutions. , complex structure and large footprint, poor environmental friendliness, there is no effective solution specifically to meet the needs of this type of wastewater treatment

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