Processing apparatus and method for wastewater containing organic pollutants

A technology for organic pollutants and treatment devices, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. effect of mineralization

Active Publication Date: 2014-12-24
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the disadvantage is that there is saturated adsorption in the adsorption layer, and different disinfectants, antidotes, cleaning agents, etc. need to be put in for different components. The actual operation is cumbersome, and various reagents added may cause secondary pollution.

Method used

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  • Processing apparatus and method for wastewater containing organic pollutants
  • Processing apparatus and method for wastewater containing organic pollutants
  • Processing apparatus and method for wastewater containing organic pollutants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035]As shown in the figure, the wastewater treatment device of the present invention includes a liquid storage tank 1, a circulating flow pump 3, a front adsorption pool 4, a photoelectrochemical pool 5, a photocatalytic pool 6 and a rear adsorption pool 7; Adsorption materials are placed in the adsorption pool 7; a cathode 8 and an anode 9 are arranged in the photoelectrochemical cell 5, and a first light source 12 is arranged directly above the cathode and anode; the photocatalytic cell 6 has a built-in photocatalyst The porous material is provided with a second light source 13 right above it; the liquid storage tank 1, circulating flow pump 3, front adsorption cell 4, photoelectrochemical cell 5, photocatalytic cell 6 and rear adsorption cell 7 are sequentially connected through pipelines.

[0036] The front adsorption pool 4 is provided with a water inlet 41 and a water outlet 42, the photoelectrochemical cell 5 is provided with a water inlet 51 and a water outlet 52, the...

Embodiment 2

[0041] In the experiment with 0.2M Na 2 SO 4 As the electrolyte, Ag / AgCl is the reference electrode, the potentiostat provides a constant voltage, BDD and Pt are used as the cathode and anode respectively, and the electrode area is 5cm 2 , fixed the pole spacing of 2.5cm, and measured the Na produced when sodium sulfate electrolyte was added to react for 40min under a certain voltage and light intensity. 2 S 2 o 8 The amount of active substance, such as Figure 4 . Then measure the degradation effect to Orange II under the same conditions, such as Figure 5 . Select the condition with the best effect of 4V and 40% of the maximum light intensity, change the pole spacing, and measure the Na produced by the sodium sulfate electrolyte. 2 S 2 o 8 The amount of active substance, such as Figure 6 , under the same conditions, the degradation effect on Orange II was measured, such as Figure 7 , get the best pole spacing 2.5cm. Na in the experiment 2 S 2 o 8 And the amo...

Embodiment 3

[0043] Porous ceramics are installed in the front adsorption cell 4, BDD cathode and anode electrode sheets and two 254nm ultraviolet lamps are installed in the photoelectrochemical cell 5, and TiO2 is filled in the photocatalytic cell 6 2 Molecular sieve and 2 254nm ultraviolet lamps, granular activated carbon is housed in the rear adsorption pool 7, fills up the reaction pool.

[0044] Using the device, 1L of Orange II dye wastewater containing 50ppm was degraded. The supporting electrolyte is 0.2mol / L Na 2 SO 4 Solution, under the condition of a constant voltage of 12V, the electrolyte solution was first passed through for 15 minutes for preheating treatment, and then the solution containing 0.2mol / L Na 2 SO 4 For the 50ppm Orange II dye wastewater in the electrolyte solution, the decolorization rate can reach 92.3% in one cycle, and 100% in two cycles.

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Abstract

The invention discloses a processing apparatus and method for wastewater containing organic pollutants. The device comprises a reservoir, a circulation flow pump, a front adsorption tank, a photoelectrochemical tank, a photocatalytic tank and a back adsorption tank. Adsorption materials are disposed in both the front adsorption tank and the back adsorption tank; a cathode and an anode are disposed in the photoelectrochemical tank; a first light source is disposed above a space between the cathode and the anode; a porous material loaded with a photocatalyst is disposed in the photocatalytic tank; a second light source is arranged above the porous material; and the reservoir, the circulation-flow pump, the front adsorption tank, the photoelectrochemical tank, the photocatalytic tank and the back adsorption tank are connected successively through pipelines. The wastewater processing device can realize harmless treatment of the wastewater containing the organic pollutants in a laboratory. By adding an electrolyte and combining coarse filtration, advanced oxidation, photocatalysis and fine filtration, purification treatment of high-concentration wastewater is realized at low energy consumption, by virtue of efficient conversion of energy.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a laboratory-generated wastewater treatment device and method. Background technique [0002] There are several universities and scientific research institutes across the country, which will produce a lot of waste liquid in the process of teaching and scientific research. The waste liquid has the characteristics of being scattered, small in quantity, highly toxic, and difficult to be treated centrally. It is often discharged directly into the sewer without treatment, causing serious harm to the environment and human health. Therefore, it is imperative to design and manufacture laboratory high-risk wastewater treatment devices for timely and rapid treatment of laboratory dispersed waste liquid. Conventional laboratory organic wastewater conventional treatment technologies mainly include biological methods and physical and chemical methods. For laboratory wastewater with high c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/08
Inventor 只金芳韩现英吴良专余愿
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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