How to treatment the sludge wastewater of printing and dyeing

The printing and dyeing industry consumes more water, and the water pollution in the printing and dyeing industry is also very serious. At the same time, the treatment of Printing and dyeing wastewater is also particularly important.

The printing and dyeing industry is a typical high-water-consuming industry that consumes nearly 100 million tons of softened water for process use every year.The source and pollutant composition of Printing and dyeing wastewater are very complex,with the characteristics of large changes in water quality,high organic content,and high chroma(mainly colored dyes)waste.

Characteristics of Printing and dyeing wastewater:

Printing and dyeing wastewater mainly contains dyes,pulp,dyeing auxiliaries and fiber impurities,oils,acids,alkalis and inorganic salts.It is recognized as one of the most difficult to treat major harmful wastewaters.Coagulation treatment of Printing and dyeing wastewater has the advantages of good treatment effect and low cost,so it has become an important means of treating industrial wastewater.

The source of Printing and dyeing wastewater and the composition of the pollutants it contains are very complex.The water quality of these wastes varies greatly and the content of organic matter is relatively high.If they are directly discharged,it will bring a series of unpredictable effects to human health and living environment.It will cause great harm and waste of water resources.

As the country and society pay more and more attention to environmental protection requirements and requirements for sustainable development,traditional treatment methods have become more and more difficult to meet the requirements of production and environmental protection.

Therefore, we urgently need a treatment equipment that can treat sludge and wastewater in the printing and dyeing industry.Thanks to the continuous improvement of sewage treatment equipment technology,the screw press sludge dewatering machine came into being.

Application of screw press dewatering machine in Printing and dyeing wastewater:

The treatment of waste in the printing and dyeing industry by the screw press dewatering machine mainly includes the dyes,pulp,dyeing auxiliaries and fiber impurities contained in the wastewater,which are relatively complex and have relatively large emissions,high PH value and high pH.In terms of treatment,the decontamination performance of the screw press dewatering machine is still very good in terms of the following refractory organisms,which is recognized as one of the most difficult to treat major harmful wastewaters.

The main technical advantages of the screw press dehydrator are: the screw press dehydrator will be equipped with a special rotary disc pre-concentration device, which can be better at dealing with low-concentration and oily sludge,and can also improve the existing gravity concentration.The disadvantage of this is that the emergence of the screw press dehydrator can integrate the efficient concentration,flocculation and concentration of low-concentration sludge, and can also adjust the sludge concentration to an optimal dewatering state.The movable fixed ring of the screw press dewatering machine replaces the traditional filter cloth,so there will be no blockage,and it is more convenient for some oily sludge treatment.

The main method used by the screw press dewatering machine to treat wastewater is the coagulation method of wastewater treatment equipment.In addition,the screw press dewatering machine has some other advantages,you can click here for details.

Advantages of screw press dewatering machine