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Organic industrial tail water treatment method based on ozone oxidation and biodegradation near-field coupling system

A biodegradation, near-field coupling technology, applied in biological water/sewage treatment, oxidized water/sewage treatment, aerobic process treatment, etc., can solve problems such as secondary pollution and reduction, and achieve damage reduction, avoid accumulation, reduce Effects of Treating Wastewater Toxicity

Pending Publication Date: 2020-04-17
NORTHEAST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In order to solve the above-mentioned technical problems, the present invention provides an organic industrial tail water treatment method based on an ozone oxidation and biodegradation near-field coupling system (SimultaneousOzonationandBiodegradation, STOB). Ozonation and biodegradation are carried out in one reactor, and ozone oxidation is realized. Integration with biodegradation, the easily degradable organic matter produced by ozone oxidation can be quickly utilized by microorganisms in the pores of the composite carrier, which improves the degradation and mineralization rate of pollutants, effectively reduces the toxicity of effluent, and reduces the area occupied And construction and operation costs, simplify the operation process, do not need to add light sources and prepare catalysts, solve the catalyst secondary pollution problem that adopts ICPB to exist, and are not affected by wastewater turbidity and chromaticity, so the treatment method of the present invention has effective, Advantages of economy and green

Method used

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  • Organic industrial tail water treatment method based on ozone oxidation and biodegradation near-field coupling system
  • Organic industrial tail water treatment method based on ozone oxidation and biodegradation near-field coupling system
  • Organic industrial tail water treatment method based on ozone oxidation and biodegradation near-field coupling system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: using porous sponge as carrier to cultivate biofilm

[0029] Take the sludge from the aerobic pool of the sewage treatment plant, settle for 1-3 hours to make the sludge layer and pour off the supernatant, and aerate for 1-3 days to activate the sludge; then soak the sponge carrier in the activated sludge and stir properly And continue to aerate for 1-3 days to fully absorb activated sludge on the pores and skeleton of the sponge carrier; then transfer the sponge carrier adsorbed with activated sludge to a completely mixed continuous flow circulation reactor for further cultivation, and supplement a certain amount of treated Industrial waste water is used as nutrient substance, make COD:N:P=100:5~10:1~5, inoculate and cultivate for 7-10d.

[0030] The sponge carrier is a polyurethane sponge, the polyurethane sponge has a porous honeycomb structure, the pore size is 0.1-0.3mm, and the porosity is about 85-90%, and the polyurethane sponge is a cube with a si...

Embodiment 2-4

[0032] The effluent quality of coking wastewater from a coking plant is shown in Table 1 below:

[0033] Table 1

[0034] project scope unit pH 7.5-8.0 COD 500-600 mg / L BOD 5

40-80 mg / L TN 70.8 mg / L Total phenols 56.7 mg / L Cl -

790 mg / L Chroma 600 times SS 74 mg / L

[0035] *COD stands for Chemical Oxygen Demand (ChemicalOxygenDemand, COD);

[0036] *BOD 5 Indicates the five-day biochemical oxygen demand (BiochemicalOxygenDemand, BOD5);

[0037] *TN means total nitrogen in water (TotalNitrogen, TN);

[0038] *SS means suspended solids concentration (Suspended solid, SS).

[0039] Take 500mL coking wastewater effluent in Table 1 and add it to the ozonation-biodegradation near-field coupling reactor, and add 2000 sponge carriers loaded with biofilm in Example 1 at the same time. Turn on the air pump and the ozone generator, and adjust and control the ozone dosage to be 40, 80, and 100 mg / ...

Embodiment 5-7

[0044] The tail water quality of a pharmaceutical factory is shown in Table 3 below:

[0045] table 3

[0046] project scope unit COD 180-200 mg / L BOD 5

61 mg / L Chroma 60 times Turbidity 19.9 NTU SS 0.079 mg / L Ammonia nitrogen 39.21 mg / L TDS 11.18 ppt salinity 13.13 psu Conductivity 22.77 ms / cm Resistivity 43.83 ohm-cm

[0047] *COD stands for Chemical Oxygen Demand (ChemicalOxygenDemand, COD);

[0048] *BOD 5 Indicates the five-day biochemical oxygen demand (BiochemicalOxygenDemand, BOD 5 );

[0049] *SS means suspended solids concentration (Suspended solid, SS);

[0050] *TDS means total dissolved solids (Total dissolved solids, TDS).

[0051] Get the pharmaceutical factory tail water 500mL in Table 3 and join in the reactor of the present invention, add 2000 sponge carriers that are loaded with biofilm simultaneously. Turn on the air pump and the ozone generator, adju...

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Abstract

The invention provides an organic industrial tail water treatment method based on an ozone oxidation and biodegradation near-field coupling system. The method comprises the following steps: firstly, putting a sponge carrier with a biological membrane attached and grown inside into a circulating reactor, introducing air into an ozone generator through an air pump to generate ozone, introducing theozone into the circulating reactor, adjusting the ozone yield of the circulating reactor through a flow meter and an ozone generator adjusting knob in the period, and uniformly fluidizing the sponge carrier under the action of ozone gas to degrade pollutants under the synergistic action of microorganisms loaded on the sponge carrier and the ozone. Easy-to-degrade organic matters generated by ozoneoxidation can be quickly utilized by the microorganisms in internal pores of the composite carrier, so that the degradation and mineralization rates of pollutants are increased, the toxicity of effluent is effectively reduced, and the occupied area and the construction and operation cost are reduced.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to an organic industrial tail water treatment method based on a near-field coupling system of ozone oxidation and biodegradation. Background technique [0002] Industrial wastewater refers to the waste liquid and wastewater produced in the process of industrial production, including industrial production materials lost with water, by-products, intermediate products and pollutants generated in the production process, among which the organic pollutants are mainly organic industries Tail water has the characteristics of complex composition, high content of toxic substances and refractory organic matter, and low biodegradability. Although its stability and effluent quality have been improved after treatment, it is still difficult to meet the COD standard of tail water treatment in organic industry, which is easy to cause Environmental pollution and harm to human...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F1/78C02F101/30
CPCC02F3/34C02F2101/30C02F1/78B01J20/262C02F3/108C02F2101/345C02F2103/343C02F3/085Y02W10/10C02F1/285C02F3/06C02F3/121C02F2001/007C02F2201/782
Inventor 周丹丹苏媛毓董双石付亮周琛布鲁斯.瑞特曼
Owner NORTHEAST NORMAL UNIVERSITY
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