Pretreatment of High Concentration Phosphorus-Containing Wastewater

Abstract:

Experimental wastewater generated in the process of preparation catalyst for the production of acrylamide, it containing a large number of sub-phosphate, sulfate. As a starting point to reduce total phosphorus concentration (TP = 2300mg/L), determine conditions to examine such as the best precipitant agent and its dosage, reaction pH, temperature and other single-factor conditions. After extensive tests confirmed, 100ml of this phosphorus-containing wastewater was adjusted to pH 8, at 30 °C, 3.0g of calcium chloride was added, reaction 180min, total phosphorus concentration can be reduced to 200mg/L or less, phosphorus removal rate can reach 91%. XRD, TG-DTA characterization analysis showed that the main component of chemical deposits were calcium phosphate and calcium sulfate crystals

• Periodical: Applied Mechanics and Materials (Volumes 295-298)
• Pages: 1187-1190
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.295-298.1187
• Online since: February 2013
• Authors: Ying Chen, Lu Lu Sun, Jing Wei Zhang, Nan Nan Sun
• Keywords: Calcium Chloride, Calcium Sulfate, Phosphorus Wastewater, Sub-Calcium Phosphate

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