Pharmaceutical wastewater advanced treatment system

Abstract

The invention relates to a pharmaceutical wastewater advanced treatment system. The pharmaceutical wastewater advanced treatment system comprises a wastewater regulating tank, a coagulative precipitation tank, an ozone oxidation floatation tank, a packed-type anoxic / anaerobic reaction tank, an aerobiotic contact oxidation tank, a secondary sedimentation tank, an electrolytic tank, a countercurrent type biological aerated filter and a clear water tank, wherein the coagulative precipitation tank comprises a stirring mixing zone and a precipitation zone, the ozone oxidation floatation tank comprises a mixing zone and a separation zone, the packed-type anoxic / anaerobic reaction tank is divided into a facultative anaerobic section, an anoxic section and an anaerobic section by baffle plates, the aerobiotic contact oxidation tank is provided with a water inlet pipe and a water distribution triangle pyramid, an aeration regulation control system is arranged at the lower part of the water distribution triangle pyramid and comprises an aeration tray, an air blower and a dissolved oxygen measurement regulation control device, the electrolytic tank is divided into a left compartment and a right compartment which are respectively a positive electrode compartment and a negative electrode compartment, the bottoms of the positive electrode compartment and the negative electrode compartment are communicated, the middle upper parts of the positive electrode compartment and the negative electrode compartment are separated by baffles, and the positive electrode compartment and the negative electrode compartment are respectively provided with a positive electrode plate and a negative electrode plate, and the countercurrent type biological aerated filter comprises a downstream zone, an upstream zone and a sludge zone.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a pharmaceutical wastewater advanced treatment system. Background technique [0002] With the improvement of people's living standards, my country's pharmaceutical industry has developed rapidly. While bringing huge economic benefits to people, the discharge of pharmaceutical wastewater has also brought a major impact on the environment. The characteristics of pharmaceutical industry wastewater are mainly manifested in: (1) The pollution components are complex and the concentration of organic pollutants is high. In the production process of drugs, the reaction substances are usually solvents and cyclic compounds, and many by-products are produced along with the reaction, resulting in very complicated pollutants in pharmaceutical wastewater. Due to the large amount of raw materials used, the production process is long, the process is complicated, and the utilizat...

AI Technical Summary

Problems solved by technology

(2) The COD value fluctuates greatly and the impact load is large

When a pharmaceutical factory produces drugs, its production process usually adopts intermittent batch production of different drugs, and the wastewater is discharged non-continuously, resulting in large COD fluctuations and impact loads in pharmaceutical wastewater

(3) There are many toxic and harmful substances that are difficult to biodegrade

The pharmaceutical industry wastewater contains some organic substances containing chromophores. The presence of these substances reduces the light permeability in the wastewater and inhibits the growth of microorganisms in the wastewater, thereby reducing the natural degradation.

(5) High salinity

[0003] At present, many scholars have applied SBR, UASB, MBR and other technologies in the research of pharmaceutical wastewater treatment, but there is no treatment process that can be widely used.

Images