Device and method for treating high-concentration organic wastewater through normal-temperature and normal-pressure catalytic oxidation

Abstract

The invention relates to the technical field of wastewater treatment, and discloses a normal-temperature normal-pressure catalytic oxidation treatment device for high-concentration organic wastewater, which comprises a treatment pond, a liquid inlet is formed in the left side of the top end of the treatment pond, a liquid outlet pipe is arranged at the bottom end of the right side of the treatment pond, and a feeding structure is arranged at the top end of the right side of the treatment pond. An open groove is formed in the top of the right side of the treatment pond, a filter screen structure matched with the liquid outlet pipe is arranged in an inner cavity of the open groove, a sediment discharge pipe is arranged at the bottom end of the right side of the treatment pond, and a separation structure is arranged at the bottom end of the inner cavity of the treatment pond. According to the device and method for treating the high-concentration organic wastewater through normal-temperature and normal-pressure catalytic oxidation, through the arrangement of the separation structure, the separation structure can divide the inner cavity of the treatment pond into two parts, in the treatment process of the wastewater in the treatment pond, discharge of precipitates cannot be affected, the utilization rate of the treatment pond is increased, and treatment of the wastewater is facilitated.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a device and a method for treating high-concentration organic wastewater by catalytic oxidation at normal temperature and pressure. Background technique [0002] The problem of high-concentration organic wastewater treatment is a recognized problem in the current world sewage treatment. The so-called high-concentration wastewater refers to some high-concentration, high-salt, and highly refractory wastewater. The water quality is complex in composition and high in organic matter. COD is generally above 10,000 mg / L, even as high as tens of thousands to hundreds of thousands of mg per liter. And generally contains toxic and harmful substances, salt content is also very high, with strong acid and alkali, can not be directly biochemically treated. [0003] Due to biodegradation, high-concentration organic wastewater will make the receiving water body anoxic or even anae...

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Problems solved by technology

And generally contain toxic and harmful substances, the salt content is also extremely high, with strong acid and strong alkalinity, and cannot be directly biochemically treated

[0003] Due to biodegradation, high-concentration organic wastewater will make the receiving water body anoxic or even anaerobic, resulting in the death of most aquatic organisms in the water body, deteriorating water quality and the environment, and a large amount of toxic organic substances contained in high-concentration organic wastewater will be released in water bodies, soils, etc. It is continuously accumulated and stored in the natural environment, and finally enters the human body, endangering human health. Therefore, high-concentration organic wastewater needs to be treated before discharge

[0004] The treatment method of high-concentration organic wastewater includes oxidation-adsorption method. The principle of this method is: firstly, the high-concentration wastewater needs to be diluted, and the diluted wastewater is initially coagulated with coal powder. After the coal powder absorbs a part of the impurities in the wastewater , and then use Fenton’s reagent to catalyze oxidation and acid coagulation, and then use pulverized coal to coagulate and adsorb. In the process of practical popularization and application, after using pulverized coal to coagulate and absorb impurities, the wastewater contains more sediment, and the wastewater is discharged when it is discharged. , the sediment will adhere to the filter, and after a long time of use, the filter will be blocked, and the filter cannot be replaced during use, which will affect the efficiency of wastewater discharge, and the staff will need to spend more time cleaning the sediment in the pool The sediment at the bottom of the wastewater treatment tank needs to be idle for a long time, which reduces the utilization rate of the wastewater treatment tank. Therefore, a device and method for catalytic oxidation treatment of high-concentration organic wastewater at normal temperature and pressure are proposed.

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