Wastewater efficient treatment technology

Abstract

The invention belongs to the technical field of wastewater treatment and specifically discloses a wastewater efficient treatment technology. The wastewater efficient treatment technology comprises thefollowing steps: (1) conveying wastewater into a heat energy utilization device and heating, and then conveying the wastewater into a steam utilization device and heating; (2) conveying the wastewater in the steam utilization device into a heater, heating the wastewater to a boiling state through the heater, discharging steam, obtained by heating through the heater, through a steam-liquid separation device, and carrying out pressurizing and temperature rising treatment on the output steam; and keeping the residual wastewater in the steam-liquid separation device, and recirculating the wastewater in the steam-liquid separation device into the steam utilization device; (3) introducing the steam into the steam utilization device and heating the wastewater, and converting the steam into high-temperature distilled water; (4) introducing the high-temperature distilled water into the heat energy utilization device and heating the wastewater; and (5) discharging a concentrated solution. Whenthe technology is used for treating the wastewater, electroplating rinsing water is effectively treated, and meanwhile, the heat circulation utilization and heat efficiency are improved; and a lot ofenergy sources and operation cost are saved.

Description

technical field [0001] The invention belongs to the technical field of waste water treatment, and in particular relates to a high-efficiency waste water treatment process. Background technique [0002] Water is used in many industries. Typical industrial applications include: production water, rinsing water, washing and cooling water, which means that there will be a large amount of industrial wastewater containing various high-concentration pollutants. With the rapid development of industry, the types and quantities of wastewater have increased rapidly, and the pollution of water bodies has become increasingly widespread and serious, threatening human health and safety. In most cases, these wastewater needs to be treated in the internal system before being discharged to the Public sewage systems or in rivers, lakes and oceans. [0003] Electroplating rinsing water is a kind of industrial wastewater. At present, there are generally two treatment methods for electroplating r...

AI Technical Summary

Problems solved by technology

[0003] Electroplating rinsing water is a kind of industrial wastewater. At present, there are generally two treatment methods for electroplating rinsing water. One is to use a large water tank to collect electroplating rinsing water, and use the reverse osmosis process to treat the wastewater and then discharge it directly. The obvious disadvantage is that it occupies a large area and causes waste of water resources; and the reverse osmosis process recycles the electroplating rinse water, and the recovery rate is low. The problem of short life

The second is to heat and evaporate the electroplating rinse water, so that the electroplating rinse water is evaporated and concentrated, and the distilled water obtained by evaporation can be recycled, and the remaining concentrated solution is treated separately. This method consumes a lot of energy and is expensive. , and the energy can not be effectively reused, resulting in waste of resources

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