Device and process for treating printing and dyeing wastewater by combining microbial electrolysis cell and anaerobic/aerobiotic technology

Abstract

The invention discloses a device and a process for treating printing and dyeing wastewater by combining a microbial electrolysis cell and anaerobic / aerobiotic technology. The device for processing printing and dyeing wastewater comprises an anode chamber, a cathode chamber, a sedimentation tank, an anode chamber water inlet, an anode chamber sludge discharge hole, a mud barrier plate, an anode chamber water outlet, an anode chamber exhaust hole, an electrode socket, a gas collection device, a cathode chamber water inlet, a cathode chamber mud discharge hole, a cathode chamber water outlet, an air pump, an aeration head, an anode, an external power supply, a cathode, a sedimentation tank mud discharge hole, a sedimentation tank water inlet, a sedimentation tank water outlet, a water pump, a sludge pump and a water pump. According to the device and process for treating printing and dyeing wastewater, the treatment effect of an anaerobic / aerobiotic treatment system is intensified by an impressed voltage, and organic matters are effectively removed; meanwhile, pH is regulated by utilizing H<+1> produced in the microbial electrolysis cell, so that the pH regulation expense is reduced, the stable operation of the anaerobic / aerobiotic system is guaranteed, and the treatment degree of the printing and dyeing wastewater is improved.

Description

technical field [0001] The invention relates to waste water treatment, in particular to a device and process for treating printing and dyeing waste water in combination with a microbial electrolytic cell and anaerobic / aerobic treatment. Background technique [0002] The printing and dyeing industry in my country is one of the industrial sectors that consume a lot of water and discharge more wastewater. According to statistics, the annual sewage discharged by the domestic printing and dyeing industry accounts for about 80% of the wastewater discharge of the entire textile industry. Printing and dyeing wastewater has the characteristics of high organic content, complex composition, deep color, high pH value, and large changes in water quality and quantity. [0003] At present, the treatment methods of printing and dyeing wastewater mainly include physical, chemical and biological methods. Although physical and chemical methods can effectively treat printing and dyeing wa...

AI Technical Summary

Problems solved by technology

Although physical and chemical methods can effectively treat printing and dyeing wastewater, their treatment costs are high and there are problems such as secondary pollution. Therefore, biological treatment is currently the main method.

However, the current biological method is incomplete in removing COD, and the decolorization effect is not very ideal, which will cause fluctuations in effluent quality, and the pH value of printing and dyeing wastewater is high, which will have a certain impact on the biochemical treatment system

Images