Film-electricity coupling treatment technology for treating difficult-to-biodegrade waste water and device

A refractory biodegradable, electrical coupling technology, applied in biological water/sewage treatment, sustainable biological treatment, electrochemical water/sewage treatment, etc., can solve serious power consumption, easy deactivation of electrodes, shortened electrode service life, etc. problems, to achieve the effect of stable effluent quality, improved effluent quality, and low working pressure

Inactive Publication Date: 2008-11-19
天津佰腾生产力促进中心有限公司
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But so far, the main problems in the process of electrochemical oxidation wastewater treatment are: (1) serious power consumption, resulting in higher wastewater treatment costs, while higher electric field voltage also shortens the service life of electrodes; (2) electrochemical oxidation For wastewater, when the COD value of the wastewater drops to ≤5000mg / L, the electrode surface is easily deactivated due to the adsorption of reactants and reaction intermediates, which significantly reduces the decomposition efficiency of the electrode and seriously hinders the electrochemical treatment of wastewater. Law development and application
But the disadvantage is that the COD removal effect of high chroma dye wastewater is poor

Method used

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  • Film-electricity coupling treatment technology for treating difficult-to-biodegrade waste water and device

Examples

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Embodiment 1

[0020] Take antibiotic pharmaceutical wastewater as an example. The water quality is light yellow, has a strong pungent smell, pH3.5~4.5, COD Cr About 6500mg / L. The residence time of wastewater in the membrane-electric coupling treatment device is 120min, the applied voltage is DC 8V, and the aeration volume corresponding to the effective volume of the reactor per liter is fixed at 0.085cm 3 / s, iron scraps are industrial iron shavings, carbon scraps are petroleum coke, the mass ratio of the two is 1:1, the average pore size of the carbon film is 0.181 μm, and the electrical conductivity is 3.040×10 2 (S / m). After the water is discharged through the carbon membrane, the COD value of the effluent is 520mg / L.

Embodiment 2

[0022] The difference between Example 2 and Example 1 is that the applied voltage is DC 2V, and the COD value of the effluent is 2600 mg / L after the water is discharged through the carbon membrane.

Embodiment 3

[0024] The difference between Example 3 and Example 1 is that the mass ratio of iron filings and carbon filings is 2:1, and the COD value of the effluent is 1350 mg / L after the water is discharged through the carbon membrane.

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Abstract

The invention belongs to the non-biodegradable organic effluent treatment technical field and particularly relates to a membrane electric coupling technology. The technology is an effluent treatment method that a DC electric field, iron-carbon micro-electrolysis and tubular carbon separation membrane are coupled organically to perform high-efficiency electrochemical oxygenolysis to remove main harmful pollution sources in non-biodegradable effluent produced by industries such as pharmacy, printing and dyeing, so as to realize complete degradation of the non-biodegradable biodegradable organic effluent or convert the non-biodegradable effluent to harmless or degradable low-level organic substances. The technology has advantages of low operation cost, easy installation, membrane stack negative pressure effluence, low working pressure; at the same time, the added DC electric field lower than 10v strengthens the electrochemical reaction effectively, has strong adaptability to acid, alkaline and high temperature of effluent, and can reduce the COD of the non-biodegradable effluent by more than 90 percent and the chromaticity removal ratio can reach over ninety-nine percent with single-stage effluence, notably increasing the solid-liquid separation efficiency and improving the quality of the effluence significantly, and the quality of effluence is stable.

Description

technical field [0001] The invention relates to a method and a treatment device for treating refractory biodegradable organic wastewater by membrane electric coupling technology, belonging to the technical field of environmental protection. Background technique [0002] With the expansion of industrial technology and the expansion of industrial scale, the types of pollutants in industrial wastewater are becoming more and more abundant, especially pharmaceutical wastewater and printing and dyeing wastewater. The wastewater has complex components, high concentrations of acids, alkalis, residual antibiotics, etc., and high biological toxicity; pH ​​fluctuations Large, high temperature, deep color, and heavy odor bring great difficulties to the biological treatment of wastewater. In particular, it will have a strong inhibitory effect on microorganisms, poisoning aerobic bacteria, and making aerobic treatment difficult; while anaerobic treatment of high-concentration organic matt...

Claims

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Application Information

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IPC IPC(8): C02F1/46C02F3/12
CPCY02W10/10
Inventor 张永刚李娟夏虹
Owner 天津佰腾生产力促进中心有限公司
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