Complexing agent for removing phenolic compounds in water

Abstract

The invention relates to a complexing agent for removing phenolic compounds in water. The complexing agent is made from, Nu-terpinene, 3-phenyl-2-propyl acrylate, cyanidin chloride, iron ammonium oxalate, Alpha-copaene, climbazole, buflomedil, Cupferron, ferric chloride, asiaticoside, hexythiazox, bornyl acetate, polyacrylamide, [R-(R*, R*)]-2, 3, 4-hydroxybutyraldehyde, fucoxanthine, and 2-hydroxyethyl cellulose. The complexing agent has high ability to complex with the phenolic compounds, complex precipitant forms fast, the removal rate of the phenolic compounds is up to 99%, the complexing agent is of low toxicity, required usage of the complexing agent is low, no hazard is caused to the water, and the treatment cost is low.

Description

technical field [0001] The invention relates to a complexing agent for removing phenolic compounds in water, belonging to the technical field of environmental protection. Background technique [0002] Phenolic compounds are protoplasmic poisons, which can produce toxicity to all biologically active bodies and cause cell damage. High-concentration phenol solution can coagulate protein and continue to penetrate into the body, causing deep tissue damage, necrosis and even systemic poisoning. Even low-concentration phenol solution can also denature protein. Phenolic wastewater not only poses a serious threat to human health, but also harms animals and plants. The treatment of phenolic wastewater has always been a major problem in the field of sewage treatment at home and abroad. In my country, phenol, m-cresol, 2,4-dichlorophenol, 2,4,6-trichlorophenol, pentachlorophenol, and p-nitrophenol are listed as phenolic pollutants for priority control. [0003] Domestic dephenoliza...

AI Technical Summary

Problems solved by technology

The disadvantage is that this method can only remove low-boiling point phenols, and consumes a lot of energy. It takes about 180 kg of fuel equivalent to standard coal to evaporate 1 ton of waste water.

[0006] 3. Incineration method: The phenolic wastewater is sprayed into the incinerator, so that the phenolic organic matter undergoes an oxidation reaction at a high temperature of about 1100 ° C, and finally produces CO 2 and H 2 O emission, this method is simple in process and easy to operate, but it consumes a lot of energy, and the cost of incinerating 1 ton of phenol-containing wastewater is relatively high

Another key disadvantage of using the incineration method to treat phenol-containing wastewater is that once the operation is careless, the furnace temperature will drop, which will often cause incomplete combustion and easily cause secondary pollution.

This method must use high-efficiency extractant and alkali, and the operating cost is relatively high

[0008] 5. Resin dephenolization method: The main process of this method includes adsorption and desorption, using resin to adsorb phenol in wastewater, and then desorbing with lye to generate sodium phenolate. The process of this method is relatively complicated, and factors that affect the efficiency of dephenolization Many, relatively high operating costs

The biochemical method has relatively strict requirements on the quality of the wastewater entering the biochemical pool. The concentration of organic matter such as tar and phenol in the wastewater should not exceed the concentration that microorganisms can bear. Otherwise, the wastewater needs to be diluted before entering the biochemical pool, which limits the amount of treated water.

At the same time, it is difficult to domesticate microorganisms. The concentration of influent water exceeds the standard and the ambient temperature is not suitable, which can easily limit the survival of microorganisms.

[0011] The above-mentioned processes have some defects and cannot be used normally in practical applications.

For example, in addition to the steam dephenolization method and incineration method, several other treatment methods have very strict requirements for wastewater pretreatment and their own processes are relatively complicated. The one-time investment is relatively large, which is unbearable for some small and medium-sized enterprises.

Affected by its own dephenolization process and dephenolization efficiency, the operating costs of conventional methods for treating phenolic wastewater are relatively high

Moreover, the dephenolization efficiency is not high, the treatment is not thorough, and secondary pollution is easy to form, which is another key point that restricts the popularization and application of certain dephenolization methods