Composite phenol removal agent capable of removing high-concentration phenyl hydroxide waste water and application method thereof

Abstract

The invention discloses a composite phenol dispose agent capable of removing high-concentration phenyl hydroxide waste water and an application method thereof. The compound phenol dispose agent consists of 46wt%-98wt% of oxidizers and 2wt%-8wt% of catalysts. The application method comprises the following steps of: fixedly loading the compound phenol dispose agent prepared at the ratio on a molecular sieve; activating at the temperature of 700-800 DEG C for 4-8 hours and sieving to obtain a particulate matter with the particle size of 80-100 meshes; adding the prepared particulate matter into the high-concentration phenyl hydroxide waste water, wherein the addition amount of the paritculate matter is 20-40ppm; regulating the pH value of the waste water to 3.0-6.0 by use of acid; and aerating for 1.0-2.0 hours, wherein the phenyl hydroxide emission amount of effluent is lower than the first national emission standard. The composite phenol removal agent disclosed by the invention has the advantages of rapid phenyl hydroxide degradation speed, no secondary pollution, available raw materials, less addition amount, low cost and simple phenyl hydroxide removal method; and when the composite phenol removal agent is used for removing the high-concentration phenyl hydroxide waste water, 400mg / L-4000mg / L high-concentration phenyl hydroxide waste water can be degraded to achieve the effect that the concentration is not greater than 0.2mg / L through one step, and the removal rate is up to above 99.9%.

Description

technical field [0001] The invention is a composite phenol removing agent for treating phenol wastewater, in particular relates to treating high-concentration wastewater with a phenol content of 400mg / L-4000mg / L, and belongs to the field of wastewater treatment in environmental protection. Background technique [0002] Phenol wastewater mainly comes from chemical enterprises such as coking plants, oil refineries, resin plants, plastic plants, petrochemical plants, etc. With the rapid development of my country's petrochemical, coking and other industries, phenol and phenolic compounds have become one of the main organic pollutants in water bodies , has potential toxicity of carcinogenicity, teratogenicity and mutagenesis. Phenol is very easy to enter the water body and is difficult to be biodegraded. After polluting the water body with phenolic wastewater, it will cause pollution of drinking water sources; a large number of fish and other deaths; inhibit the growth of water bod...

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Problems solved by technology

[0003] At present, the commonly used phenol wastewater treatment technologies in China mainly include adsorption method, extraction method, liquid membrane method, precipitation method, electrolysis method, photocatalysis method and biochemical method; adsorption method is a simple and easy method for treating wastewater. Widely used solid adsorbents include activated carbon, sulfonated coal, macroporous resin, etc., but with the rapid increase in the amount of activated carbon, its regeneration is difficult. Although sulfonated coal is easy to regenerate, the adsorption capacity is small, and the treated wastewater The amount of phenol in the wastewater is far below the discharge standard, and secondary treatment is required; the extraction method is more complicated, which will bring new pollution to the environment, and the small amount of expensive solvent dissolved in the wastewater will reduce economic benefits; the liquid membrane method Efficient, fast, and high selectivity, it is suitable for the treatment of high and low concentrations of phenol-containing wastewater, but the operating technical requirements are high, and the stability of the liquid film has not been completely resolved; the precipitation method is simple and economical, but after treatment, the concentration of phenol in the wastewater is high ; The electrolysis method is only suitable for the advanced treatment of low-concentration phenol-containing wastewater, and the energy consumption and treatment costs are high, and some side reactions will also be caused; the photocatalytic method usually requires high temperature or ultraviolet radiation and the reaction time is long; The phenol concentration that can be tolerated by the biological bacteria used is low, and the growth and reproduction of bacteria will be inhibited when the phenol concentration is high; Fenton reactor, using cathodic electro-Fenton method to treat phenol wastewater, the experimental results show that under the optimal reaction conditions Fe 2+ The dosage is 1mmol / L, the pH value is 3, the electrolysis voltage is 9V, and the aeration intensity is 25ml / L. At this time, the maximum removal rate of phenol is 87.5%. Technology Catalytic Oxidation of Phenol in Water" mentioned an ultrasonic-H 2 o 2 -CuO combination technology for the degradation of phenol, the results show that the single ultrasonic, ultrasonic-H 2 o 2 , Ultrasound—H 2 o 2 —CuO—stirring and ultrasonic—H 2 o 2 The removal rates of phenol under the combined conditions of —CuO—air were 24.0%, 53.3%, 78.0%, and 89.5%, respectively