A porous functional carrier preparation device and method for preparing porous polymer organic carrier for sewage treatment

Abstract

The invention relates to a method for preparing a porous macromolecular organic carrier applied to sewage treatment by using an ultra-critical fluid technology. By using the porous carrier, a functional substrate can be uniformly dispersed in a porous structure. The prepared porous carrier is controllable in pore structure, high in porosity and large in the specific surface area. Meanwhile, by changing the operating conditions, the pore structure, porosity and specific surface area of the carrier can be controlled effectively. Meanwhile, the porous carrier prepared by using the method is low in the residual rate of organic solvents, and is basically non-toxic to microorganisms. The carrier can suspend in a sewage treatment bed by controlling the adding amount of the substrate and the pore structure, so that the use of a support bracket is reduced. Moreover, the technical preparation time is short (only certain hours), and the carrier can be widely applied to sewage treatment.

Description

technical field [0001] The patent of the present invention relates to a porous functional carrier preparation device and a method for preparing a porous polymer organic carrier for sewage treatment by using the device. Background technique [0002] Wastewater discharged from chemical, pharmaceutical, printing and dyeing industries contains a large amount of refractory organic substances, such as halogenated and nitrogen-containing aromatic compounds, which are discharged into the natural environment, showing long-term residue and high toxicity. There are physical, chemical and biological methods for the treatment of refractory organic matter, among which the biological treatment process (especially the anaerobic-aerobic process) is considered to be one of the most economical and effective technologies. Some aromatic compounds with simple structures can be directly anaerobic biomineralization, but the anaerobic biodegradation rate of some refractory organics is slow, which is...

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Problems solved by technology

[0005] However, these methods have certain limitations in the preparation of porous carriers for sewage treatment due to their own shortcomings. For example, the above three methods all need to add pore-forming agents or cross-linking agents, and the addition of these pore-forming agents and cross-linking agents sometimes causes Produces certain toxicity to microorganisms and weakens the effect of sewage treatment

In addition, the preparation cycle of the above three methods is relatively long, the elder is about 10 days, and the shortest is more than 24 hours.

The third is that most of these methods require long-term high-speed stirring in the process of preparing porous carriers to mix the solution evenly to obtain a uniformly distributed pore structure, and it is difficult to effectively control the formation of pore size, porosity and pore structure.

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