Wastewater reuse equipment

>Process technology industrial electroplating wastewater reuse equipment | Wastewater reuse equipment
The electroplating industry is an indispensable link in the national economy and involves the defense industry and life fields. From a broad category, it can be divided into metal plating and plastic plating for mechanical parts to achieve the effects of anti-corrosion, beauty, extension of life, appearance decoration and other effects of workpieces.
The wastewater produced by electroplating is highly toxic and harmful to the growth of soil animals and plants. Therefore, wastewater must be strictly treated and discharged to meet standards, and wastewater treatment and recycling must be implemented in water-scarce areas. From a technical production point of view, a certain amount of various chemicals must be added during the electroplating production process and wastewater treatment process. After the electroplating wastewater is treated, the recycled water must be desalted before it can be reused in the production line. The total salt content of the water in the environment will not reduce the resin exchange and the concentrate of the reverse osmosis process will still return to the ground.
Important water quality characteristics of electroplating wastewater
The main pollutants of mixed electroplating wastewater are organic pollution, grease, surfactants and suspended solids. The biodegradability of sewage is poor, so it should be treated by physical and chemical plus biochemical methods.
Analysis of the Second Electroplating Wastewater Treatment Process
Process Selection
According to the characteristics of the wastewater, we strive to determine the best process flow through the following process analysis
Electroplating wastewater contains a large amount of suspended matter surfactants. To reduce the load on the subsequent aerobic biochemical unit, it is necessary to set up a grid for pretreatment.
The discharge of electroplating wastewater is irregular. In order to ensure that each subsequent treatment unit can operate according to the optimal operating point, it is necessary to set up an adjustment pool to balance the water volume and quality and reduce the part through stirring to ensure that the subsequent treatment processes can operate continuously and stably.
The electroplating wastewater contains a large amount of surfactants and should be removed using physical and chemical methods. This project uses asymmetric fiber equipment to pretreat the sewage. The suspended solids and non-biodegradable substances contained in the electroplating wastewater are coagulated through a filtration process. Solid and liquid are fully separated through flocculation reaction and filtration under the action of agent and flocculant.
After physical and chemical treatment, the organic content of the mixed electroplating wastewater is still high. The membrane biological fluidized bed process is used to use specially treated ceramic membranes to combine the membrane separation system with the high-load biological fluidized bed process to obtain stable treatment water quality. This process has been promoted and applied in the field of sewage and wastewater treatment in the United States, Japan, the United Kingdom, Germany, South Africa, Australia and other countries and regions.