Treatment method of waste water produced by adopting castor oil to prepare decanedioic acid

Abstract

The invention belongs to the treatment technical field of decanedioic acid produced waste water, and particularly relates to a treatment method of waste water produced by adopting castor oil to prepare decanedioic acid, which adopts the technical scheme that: scrap iron is firstly added into an oxidation pond to form a stationary bed layer of solids; then the waste water with the solid foreign matters being filtered is discharged into the oxidation pond, and simultaneously the hydrogen dioxide solution oxidant with the concentration of 30 percent is added to the oxidation pond; air is sent into the oxidation pond through a blower; finally sulfuric acid is added into the oxidation pond to adjust the pH value to be 3 to 4, three-phase catalytic oxidation reaction is carried out, the active ingredient of catalyst is green copperas, the reaction temperature is 50 DEG C to 60 DEG C, and the reaction time is 4h to 8h; and after the reaction is ended, the waste water after being treated is discharged into a waste water adjusting pond, flocculating agent is also added into the waste water adjusting pond, and the well-treated waste water can be obtained after filtering the suspended substances and precipitates The method has simple process and moderate reaction conditions, is free from requiring the high temperature and high pressure, is easy to operate, has fast reaction speed, less equipment investment, high treatment efficiency, high removal rate of phenol in the waste water and no secondary pollution, and is environment-friendly and safe.

Description

technical field [0001] The invention belongs to the technical field of sebacic acid production wastewater treatment, and in particular relates to a treatment method for the wastewater produced by preparing sebacic acid from castor oil. Background technique [0002] In the production process of castor oil to prepare sebacic acid, because phenol has the property of dissolving ricinoleic acid, phenol is often used as a diluent in the ricinoleic acid cracking process, but because phenol does not participate in the reaction, in the cracking reaction There is no consumption, so it is discharged with the waste water. The production of one ton of sebacic acid produces 30-35 tons of 4000mg / l phenol-containing wastewater, which brings great difficulty to the treatment of wastewater. [0003] Phenol is a highly toxic and refractory organic compound of aromatic hydrocarbons. It is a protoplasmic poison and has a toxic effect on all living organisms. After contacting with the protein in...

AI Technical Summary

Problems solved by technology

Chlorine dioxide acts as a catalyst, which produces a strong taste and leads to the formation of chlorophenol compounds

Manganese dioxide will no longer react with phenol after the active adsorption sites on the surface are saturated by trivalent manganese ions and divalent manganese ions, which has great limitations.

Ozone has special irritation, low solubility in water, only 3%, and unstable, easy to decompose, which limits its application

Images