Method and equipment for processing chemicals waste water by catalytic oxidation of activated carbon induced by microwaves

A technology of catalytic oxidation and activated carbon, which is applied in the field of water treatment, can solve the problems of large biochemical differences and damage to the stable operation of the biochemical treatment system, and achieve the effect of simple operation, low one-time input cost of the system, and high removal rate

Inactive Publication Date: 2012-03-21
TIANJIN RES INST FOR WATER TRANSPORT ENG M O T
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, tank washing wastewater contains residual chemicals in the tank and cleaning agents used, and its water quality often varies with the types of chemicals transported, and the biochemical properties vary greatly, which has high requirements for the adaptability of

Method used

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  • Method and equipment for processing chemicals waste water by catalytic oxidation of activated carbon induced by microwaves
  • Method and equipment for processing chemicals waste water by catalytic oxidation of activated carbon induced by microwaves

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0026] See figure 1 , a device for realizing microwave-induced activated carbon catalytic oxidation treatment of chemical wastewater, including activated carbon reaction bed 5, microwave generator 4, water inlet pool 1, water inlet lift pump 9, air pump 3, condenser 6, gas-liquid separator 7 and tail gas absorption device, the top of the activated carbon reaction bed 5 is provided with waste water and air inlets, the side is provided with microwave inlets, and the bottom is provided with treated waste water outlets, the waste water and air inlets are connected to the air pump 3, And it is connected with the water inlet pool 1 through the water inlet lift pump 9, the microwave inlet is connected with the microwave generator 4, the waste water outlet after the treatment is connected with the inlet of the condenser 6, and the outlet of the condenser 6 Outlet is connected with the inlet of described gas-liquid separator 7, and described gas-liquid separator 7 is provided with the ...

Embodiment 2

[0030] See figure 1 , a device for microwave-induced activated carbon catalytic oxidation treatment of chemical wastewater, the difference from Example 1 is that the activated carbon in the activated carbon reaction bed 5 is coconut shell carbon, and the particle size of coconut shell carbon is 0.5-2.8mm ; Tail gas absorption device is: activated carbon fiber absorption tower. Use the above-mentioned equipment to take the actual chemical tank washing wastewater as the treatment object, and the influent COD is 8500mg / L. The operation steps of the equipment are the same as in Example 1, and the operating parameters are as follows: the hydraulic retention time of the control wastewater in the activated carbon reaction bed 5 is 90min , the air intake volume is 2000L / min, and the microwave power is 150KW.

[0031] After testing, the COD of the purified waste liquid was reduced to 75mg / L.

Embodiment 3

[0033] See figure 1 , a device for microwave-induced activated carbon catalytic oxidation treatment of chemical wastewater, the difference from Example 1 is that the activated carbon in the activated carbon reaction bed 5 is fruit shell carbon, and the particle size of the shell carbon is 18-20 mm. The tail gas absorption device is: epoxy resin absorption tower. Use the above-mentioned equipment to take the actual chemical tank washing wastewater as the treatment object, and the influent COD is 4995mg / L. The operation steps of the equipment are the same as in Example 1, and the operating parameters are as follows: the hydraulic retention time of the control wastewater in the activated carbon reaction bed 5 is 150min , the air intake volume is 5000L / min, and the microwave power is 150W.

[0034] After testing, the COD of the purified waste liquid was reduced to 53mg / L.

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Abstract

The invention discloses a method for processing chemicals waste water by catalytic oxidation of activated carbon induced by microwaves, comprising the following steps: firstly, the waste water and air enters an activated carbon reaction bed, and the reaction of inducing the catalytic oxidation of the activated carbon by the microwaves is conducted in the activated carbon reaction bed; and secondly, water discharged from the activated carbon reaction bed is subjected to gas-liquid separation after being condensed, separated liquid is emitted when reaching the standard, and separated gas is emitted by reaching the standard by being processed by adsorption. The invention also discloses equipment adopting the method. The method for inducing the catalytic oxidation of the activated carbon by the microwaves has a plurality of advantages as follows: the degradation rate is high, the processing time is short, the degradation is conducted under normal pressure, the requirements on equipment material is low, the investment cost on a system one time is small, and the like. Simultaneously, as microwave technology is adopted for processing sewage, a sewage processing project can be miniaturized and decentralized, and drain contamination pipe networks can be reduced, so that the water environment of humanity can realize virtuous circle, and higher economic benefits can be realized.

Description

technical field [0001] The invention belongs to the field of water treatment, in particular to a method and equipment for microwave-induced activated carbon catalytic oxidation treatment of chemical wastewater. Background technique [0002] With the rapid development of my country's water transport industry, the cargo volume and variety of chemicals continue to increase. The transportation mode of liquid chemicals is mainly in bulk, and the waste water from port tank washing comes from the ballast water and water produced during the loading and unloading of cargo ships. Tank washing water. The wastewater not only contains chemicals that are difficult to treat biologically, such as toluene, phenol, formaldehyde, styrene, acrylonitrile, and cleaning agents used to clean the cabin, but also because of the intermittent operation of the bulk chemical port and the variety of pollutants. The water quality and quantity are variable and random, and it is difficult to deal with them....

Claims

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Application Information

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IPC IPC(8): C02F1/30C02F1/72
Inventor 蒋文新张光玉周斌李欣赵英杰曹红梅
Owner TIANJIN RES INST FOR WATER TRANSPORT ENG M O T
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