Incineration wastewater treatment method

Abstract

The invention discloses an incineration wastewater treatment method. A demulsifier W25 and a coagulant, namely, PAC (poly aluminum chloride), are added to high-COD and high-salinity wastewater for primary demulsification, the removal rate of COD is 80%, the PH value is readjusted with a NaOH solution, the coagulant, namely, the PAC, and a coagulant aid PHP are used for secondary demulsification, the removal rate of the COD is 83.3%, and the total removal rate is 96.7%; calcium compounds, namely, calcium chloride and calcium oxide, as well as an aluminum compound, namely, sodium metaaluminate, are added, the ratio of Ca to Al is controlled to be 2:1, the removal rate of primary chloride ions is 69.8%, the removal rate of secondary chloride ions is 81.1%, and the total removal rate of the secondary chloride ions is 94.3%. The method has good guiding significance for pollution of underground water, adverse effects on agricultural and fishery irrigation and culture and corrosion to high-salinity wastewater delivery pipelines due to non-up-to-standard emission of the incineration wastewater, and the method has the advantages of simple technology, low cost, adaptability to mass investment production and capability of reducing environmental pollution.

Description

technical field [0001] The invention relates to a treatment method for incineration waste water, which is applied in the field of treatment technology for incineration waste water. Background technique [0002] Pollutants such as waste water and waste are presented to us more and more with the progress and development of the times and science and technology. The incinerated sewage contains heavy metals and high-concentration salts, which will harm the environment. As the incinerated wastewater is washed, it contains fly ash (organic) with complex components, resulting in high COD, about 12000-15000mg / l, and at the same time, the salinity of incinerated wastewater is high, as high as 25000- 30000ppm. Since chlorine salts are corrosive, they can hinder the growth of aquatic plants and animals and cause environmental hazards. In the process of production, incineration waste water is saturated and affects production (acid removal effect). Because waste water is not easy to tr...

AI Technical Summary

Problems solved by technology

However, it will cause waste of water resources. Similarly, the dilution of a large amount of water will increase the burden on the water body, which will lead to the shortage of water resources. Therefore, this method is only a theoretical existence.

Separation and collection of high-salinity incineration wastewater is treated by evaporation and concentration, but due to high cost and corrosion of pipelines during transportation, treatment and transportation costs are increased