Method for conducting coupling processing on high-concentration organic waste water and heavy metal waste water
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A technology for organic wastewater and heavy metals, applied in chemical instruments and methods, separation methods, water/sewage treatment, etc., can solve the problems of difficult regeneration and elution of activated carbon, achieve solidification and effective resource utilization, simple preparation process, lightening The effect of adsorbent regeneration
Active Publication Date: 2019-04-16
XI AN JIAOTONG UNIV
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At present, the activated carbon adsorption method is used for the treatment of high-concentration orga...
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Embodiment 1
[0036] The method for coupling treatment of high-concentration organic waste water and heavy metal waste water of the present invention comprises the following steps:
[0037] Step 1. Preparation of carbon-containing raw material 1: using pine wood chips as raw materials, the pine wood chips were crushed, sieved, dried, and then carbonized to prepare carbon-containing raw material 1. The carbonization temperature was 700° C., and the carbonization treatment time was 2 hours.
[0038] Step 2. Preparation of porous carbon material 2: After mixing the biomass-based carbonized material prepared in step 1 with potassium hydroxide at a ratio of 1:4, react in a fixed-bed reactor, and wash with acid and water after the reaction The porous carbon material 2 is obtained by drying several times. During this process, the activation temperature of the carbon-containing raw material 1 is 700° C., and the reaction time is 2 hours.
[0039] Step 3. Coupling treatment of high-concentration org...
Embodiment 2
[0043] The method for coupling treatment of high-concentration organic waste water and heavy metal waste water of the present invention comprises the following steps:
[0044] Step 1. Preparation of carbon-containing raw material 1: using petroleum coke as a raw material, the petroleum coke is crushed, sieved, dried, and then carbonized to prepare carbon-containing raw material 1. The carbonization temperature is 700° C., and the carbonization treatment time is 2 hours.
[0045] Step 2. Preparation of porous carbon material 2: After mixing the petroleum coke carbonized material prepared in step 1 with potassium hydroxide at a ratio of 1:4, react in a fixed-bed reactor, and wash with acid and water after the reaction. The second time, dry the porous carbon material, the activation temperature of the carbonized material in this process is 700°C, and the reaction time is 2h.
[0046] Step 3. Coupling treatment of high-concentration organic wastewater and heavy metal wastewater: t...
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Abstract
The invention relates to a method for conducting coupling processing on high-concentration organic waste water and heavy metal waste water. The method comprises the steps that carbon-containing materials are subjected to carbonation-activation, then a porous carbon material with the high specific surface area and rich pore structure is prepared, the material is used for conducting coupling processing on the high-concentration organic waste water and heavy metal waste water, and hydrogen-enriched gas is prepared. The porous carbon material prepared from carbon-containing waste is used for adsorption and enrichment of organic matter and heavy metal ions in the high-concentration organic waste water and heavy metal waste water, removal of the heavy metal and organic matter is achieved. The porous carbon material adsorbing the heavy metal ions is subjected to high-temperature calcining, a supported carbon-based catalyst is prepared, the catalyst is used for conducting catalytic reforming on the organic matter desorbed from porous carbon absorbing the organic matter, and the hydrogen-enriched gas is obtained. After the porous carbon absorbing and enriching the organic matter performs desorption completely, the porous carbon is circularly applied to adsorption of the high-concentration organic waste water, and inactivated carbon-based catalyst recycles the heavy metal through oxidizing roasting. In the catalytic reforming test, the applied water source is water separated out after adsorption is completed, and then the purposes of using waste to treat waste and achieving resourceregeneration are achieved.
Description
technical field [0001] The invention belongs to the field of waste water treatment, and in particular relates to a method for coupled treatment of high-concentration organic waste water and heavy metal waste water. Background technique [0002] At present, the problem of water resource pollution in our country is becoming more and more serious, and it has become a major problem that needs to be solved urgently in the development of the national economy. With the development of society, industrial production continues to increase, and industrial sewage discharge is becoming more and more serious. Many enterprises directly discharge a large amount of industrial wastewater into rivers or bays, which not only affects the water ecosystem, but also seriously threatens human health. All kinds of coking wastewater, pharmaceutical wastewater, textile printing and dyeing wastewater, and petrochemical wastewater are high-concentration organic wastewater, which is very difficult to trea...
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