Paper making sewage processing method

Abstract

The invention discloses a paper making sewage processing method, solving the problem for processing paper making sewage. The method comprises the steps of: adding with 150-300g of soybean oil into each ton of paper; and adding with 5-10g of alumen and 3-5g of white sugar into each ton of paper making sewage to process the paper making sewage. The method primarily materializes the paper making sewage with the alumenb and the white sugar, and the processed sewage can be recycled in the production. After 5-10 minutes of the production, the waste water can be changed into clear water, the water isseparated from paper pulp, after 15-20 minutes the water is separated from the paper pulp, and the paper pulp is fast recycled to be finished paper with a paper vehicle. The clear water is distributed into every required place, and achieves the national uniform standard COD 200 mg / L and BOD 50 mg / L, therefore, the method has the effect of fast recycle, reducing sewage outflow, changing waste intowealth, saving cost, improving yield, and greatly saving groundwater resource.

Description

technical field [0001] The invention relates to a papermaking sewage treatment method. Background technique [0002] The paper industry is a key area of ​​energy conservation and emission reduction. According to the statistics of the State Environmental Protection Administration, in 2007, among the 41 industries in the country, the total discharge of industrial wastewater in the country was 22.11 billion tons, of which the discharge of wastewater from the paper industry accounted for 14.4% of the total, ranking second only to the chemical manufacturing industry. According to the most important index of chemical oxygen demand (COD) in wastewater, the total discharge of COD in the paper industry is as high as 1.682 million tons, accounting for 33% of the national industrial discharge, ranking first. In addition, the paper industry ranks first among the five high-water-consuming industries in my country. The water consumption per ton of paper in domestic paper mills is as high...

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is to overcome the defects of high cost and unsatisfactory effect of papermaking sewage treatment in the prior art, and provide a papermaking sewage treatment method. The present invention uses alum and white sugar to carry out primary physical and chemical treatment of papermaking sewage. Treated sewage can also be recycled to production