Centrifugal extraction machine class aromatic hydroxy phenol wastewater treatment
Profile industry wastewater containing phenol as the petrochemical industry in recent years, plastics factory, coking plant, the development of synthetic fiber factory, insulation materials plant, the pollution of wastewater containing phenol, has been the epa as one of 129 kinds of priority control pollutants blacklist.
Phenolic compounds of waste water containing phenol is a kind of prototype poison, can through the skin and mucous membrane contact without liver detoxification directly into the circulation of the blood.
Using phenol wastewater irrigation farmland, also can make crops or die.
phenols source phenolic compounds belong to aromatic hydroxyl compounds, natural water, generally do not contain the compounds, but when natural water polluted by some industrial wastewater may be checked out.
Phenol as the protoplasm poison, when human body absorb a certain amount, can appear the symptom of acute poisoning.
phenolic compound of national standard the content of phenolic compounds in water is one of the important indexes of water quality monitoring.
Our country industry norms HJ503 -
2009 'water quality determination of volatile phenols 4 -
Amino anti than stand light spectrophotometry determination of volatile phenol in water '4 -
Amino anti than stand light photometric method and spectrophotometry were directly make that clear.
Effluent discharges of industrial wastewater and domestic sewage appropriate USES direct spectrophotometric method, surface water, groundwater and drinking water, appropriate USES 4 -
Amino anti than stand light spectrophotometry, the method of experimental condition and more strict operating process.
phenolic compound processing method because of the phenolic compounds is synthetic pesticides, dyes, plastics antioxidants such as an important fine chemical intermediates, it is common for high toxicity and hard to degradation of organic matter, the dangers of phenolic wastewater is very large.
The treatment of wastewater containing phenol is more, such as biochemical method, solvent extraction method, adsorption method, liquid film method, etc, the solvent extraction method because of its simple process, easy operation, high extraction efficiency, often used in the treatment of wastewater containing phenol.
Raw material liquid mixed with the extracting agent fully contact, complete the solute mass transfer process;
weight according to certain proportion respectively from two two phase solution and feeding tube into the drum shell ring gap formed between the mixed zone, with the aid of the rotation of the drum, through the turbine disc and the impeller to make two phase mixing and dispersing quickly, two phase solution fully mass transfer.
Complete mixing and mass transfer process.
Extraction and extraction residual phase separation process;
mixture under the action of vortex disk into the rotary drum, in the plate to form the bulkhead area, mixture quickly with synchronous rotary drum, in under the action of centrifugal force, the heavier than major phase fluid in the process of upward mobility and gradually away from the drum center on the drum wall;
Small proportion of liquid phase gradually away from the drum wall and on to the center, after clarification of two phase fluid end respectively through their weir plate into the collection chamber and the tube was closed to derivation, respectively, to complete two phase separation process.
From the extraction phase and extraction phase extractant recycling process.
usually use the method of distillation recycling extracting agent.
Removal after extraction of proportion as the extractant extract;
After removal from the extraction agent over extraction of proportion of extraction liquid.
centrifugal extraction machine application in the treatment of phenol wastewater centrifugal extraction machine processing waste water containing phenol, less equipment investment, not only cover an area of an area small, easy operation, low energy consumption, and can effectively recycle waste water of phenolics, more suitable for the high concentration phenol wastewater.
Liquid membrane extraction is regarded as a kind of can achieve separation and recycling of wastewater containing phenol method of high efficiency low energy consumption.
In order to achieve the extraction of phenol in waste water containing phenol, the selection of extraction agent is crucial.
The extraction agent must be efficient and has to be very good solvent extraction substances (
The high distribution coefficient)
And the high selectivity of (
The high selectivity of coefficient)
with high efficient centrifugal extraction machine and complexation extraction agent combined processing technology, can save a lot of the cost of extracting agent, removing phenol rate above 98%, complexation extraction solvent can be recycled.