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Oxidation of Nanofiltration Concentrate—a/o Biological Treatment Method

A biological treatment and concentrated solution technology, applied in the direction of oxidized water/sewage treatment, chemical instruments and methods, light water/sewage treatment, etc., can solve the problems of multiple toxic and harmful substances, poor biodegradability of petrochemical nanofiltration concentrates, etc.

Active Publication Date: 2018-09-11
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention is to solve the technical problem that the petrochemical nanofiltration concentrated liquid has poor biodegradability and contains more toxic and harmful substances, and provides a nanofiltration concentrated liquid oxidation—A / O biological treatment method

Method used

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  • Oxidation of Nanofiltration Concentrate—a/o Biological Treatment Method

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specific Embodiment approach 1

[0050] Specific implementation mode one: In this embodiment, the nanofiltration concentrated liquid oxidation-A / O biological treatment method is as follows:

[0051] 1. React the concentrated nanofiltration solution for 20 minutes under the irradiation of an ultraviolet lamp with an emission wavelength of 254nm and a power of 40w, and the dosage of ozone is 1g / h-2g / h;

[0052] 2. Anaerobic section: Then pass the nanofiltration concentrate treated in step 1 into the anaerobic reactor, and the HRT is 12 to 24 hours;

[0053] 3. Aerobic section: Then pass the concentrated nanofiltration solution treated in step 2 into the aerobic reactor, the HRT is 8-16 hours, and the water is discharged, that is, the oxidation of the concentrated nanofiltration solution-A / O biological treatment is completed;

[0054] The anaerobic reactor described in step 2 is UASB, IC or SBR anaerobic reactor;

[0055] The anaerobic activated sludge with highly efficient degradation nanofiltration concentrat...

specific Embodiment approach 2

[0057] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the process of the anaerobic activated sludge with highly efficient degradation nanofiltration concentrate described in step 2 is as follows:

[0058] (1) First check whether the equipment of the anaerobic device is in good condition;

[0059] Preparation of potions for domestication:

[0060] According to the addition amount of each component in 1 liter of medicine, 0.5 grams of urea, 2 grams of white sugar; 0.2 grams of ferrous sulfate; 0.1 grams of potassium dihydrogen phosphate; 0.1 grams of sodium nitrate; 0.1 grams of magnesium sulfate; gram, calcium chloride 0.01 gram;

[0061] You can first use a 50L large bucket to prepare a concentrated solution, and then dilute it when you use it;

[0062] (2) Stir the sludge taken from the chemical sewage treatment plant in a small bucket to remove large particles, and then add the nanofiltration concentrate. If it is wet sl...

specific Embodiment approach 3

[0069] Specific implementation mode three: the difference between this implementation mode and specific implementation mode one or two is that

[0070] The process of aerobic activated sludge coating or aerobic activated sludge domestication described in step 3:

[0071] (1) First check whether the equipment of the aerobic device is in good condition;

[0072] (2) hang the packing ball in the aerobic reactor;

[0073] (3) Preparation of medicines for domestication:

[0074] According to the addition amount of each component in 1 liter of medicine, the dosage is as follows: 0.2 grams of urea, 2 grams of white sugar; 0.1 grams of ferrous sulfate; 0.1 grams of potassium dihydrogen phosphate; 0.1 grams of sodium nitrate; 0.1 grams of magnesium sulfate; 2 milliliters of sodium lactate; 0.01 grams;

[0075] You can first use a 50L large bucket to prepare a concentrated solution, and then dilute it when you use it;

[0076] (4) Instead of aerobic sludge or anaerobic sludge in the...

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Abstract

The invention provides an oxidation-A / O biological treatment method for a nanofiltration concentrated solution and relates to a biological treatment method of the nanofiltration concentrated solution, belonging to the field of advanced treatment of petrochemical wastewater. According to the oxidation-A / O biological treatment method, the problems that a petrochemical nanofiltration concentrated solution is poor in biodegradability and contains more toxic and harmful substances are solved. The treatment method comprises the following steps: (1) irradiating the nanofiltration concentrated solution by virtue of an ultraviolet lamp tube, and reacting under ozone conditions for 20 minutes; (2) anaerobic stage: carrying out HRT for 12-24 hours; (3) aerobic stage: carrying out HRT for 8-16 hours, and draining, so as to finish the treatment. According to the oxidation-A / O biological treatment method, the nanofiltration concentrated solution can be drained with stable water quality, the reduction of sludge is 60%, the draining index reaches the national-level B standard, and the actual engineering reform can be carried out by virtue of existing water treatment units; the total removal rate of COD can reach 66.96%, the total removal rate of TOC can reach 47.17%, the total removal rate of TC can reach 60.02%, and the total removal rate of IC can reach 78.40%.

Description

technical field [0001] The invention relates to a biological treatment method for nanofiltration concentrated liquid, which belongs to the field of advanced treatment of petrochemical wastewater. Background technique [0002] Membrane separation technology is widely used in the field of sewage treatment and reuse because it can remove most organic pollutants. The pressure-driven membrane separation technology has the advantages of high efficiency and relatively low energy consumption. The wastewater produced by the petrochemical industry has complex components and contains various inorganic salts and organic pollutants, so it is difficult to treat. Among them, nanofiltration (Nanofiltration) technology has been rapidly developed because of its ability to obtain good removal rates for salts, metal ions, and small organic molecules at lower driving pressures. Due to the enrichment of pollutants by the nanofiltration process, a nanofiltration concentrate containing more pollut...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
CPCC02F1/32C02F1/78C02F3/30C02F9/00C02F2303/06
Inventor 魏利魏超魏东李春颖
Owner HARBIN INST OF TECH
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