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Integrated laboratory waste water treatment method and device

A wastewater treatment, integrated technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. Determine and other issues to achieve considerable economic and social benefits, high performance and added value, and easy handling

Inactive Publication Date: 2011-05-04
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the uncertainty, variability, and complexity of the amount and quality of laboratory wastewater, the application of the above-mentioned laboratory wastewater treatment technologies has great limitations.
[0004] There have been reports at home and abroad about the use of iron-carbon micro-electrolysis wastewater treatment technology to treat organic wastewater and heavy metal wastewater. its application in industry

Method used

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  • Integrated laboratory waste water treatment method and device
  • Integrated laboratory waste water treatment method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Treatment object: Acidic wastewater discharged from the analytical chemistry laboratory of a chemical building in a university in Wuhan.

[0029] Influent water quality: pH: 2.5~4.8

[0030] Main process parameters:

[0031] Iron / carbon ratio: 3:1

[0032] Hydraulic retention time: 50-70min

[0033] Gas-liquid ratio: 10:1

[0034] Effluent water quality: pH: 6.1 ~ 7.2, up to the discharge standard.

Embodiment 2

[0036] Treatment object: organic wastewater discharged from the organic synthesis laboratory of a chemical building in a university in Wuhan.

[0037] Influent water quality: COD: 150~230mg / L

[0038] Main process parameters:

[0039] Iron / carbon ratio: 1:3

[0040] Hydraulic retention time: 90-110min

[0041] Gas-liquid ratio: 15:1

[0042] Effluent water quality: COD: 75~90mg / L, meeting the first-class discharge standard of GB8978-1996.

Embodiment 3

[0044] Treatment object: Mixed average water samples from the sewage discharge outlet of a chemical building in a university in Wuhan for one month.

[0045] Influent water quality: pH: 5.75, COD: 46.5mg / L, TOC: 25.1mg / L, volatile phenol: 1.327mg / L, Cr(VI): 0.592mg / L, Pb 2+ : 0.113mg / L, Cu 2+ : 1.516mg / L, Zn 2+ : 2.628mg / L, Mn 2+ : 2.356mg / L.

[0046] Main process parameters:

[0047] Iron / carbon ratio: 1:2

[0048] Hydraulic retention time: 70-100min

[0049] Gas-liquid ratio: 12:1

[0050]Effluent water quality: pH: 6.48, COD: 35.6mg / L, TOC: 18.7mg / L, volatile phenol: 0.0199mg / L, Cr(VI): 0.0219mg / L, Pb 2+ : 0.0237mg / L, Cu 2+ : 0.0394mg / L, Zn 2+ : 0.202mg / L, Mn 2+ : 0.118mg / L. Reach GB8978-1996 level one emission standard.

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Abstract

The invention relates to an integrated laboratory waste water treatment method and device. The device is composed of a shell as well as an aerator pipe, a filter plate, an iron-carbon filling material, an airflow baffle, a three-phase separator and a downflow weir which are internally installed; the filter plate is arranged at the lower end of the waste water treatment device; the aerator pipe is arranged between the shell at the lowest end and the filter plate; the iron-carbon filling material is filled in the inner shell space between the filter board and the airflow baffle; the shell space above the airflow baffle is provided with the three-phase separator; the upper end of the three-phase separator is connected with the downflow weir; one side of a shell side wall between the lowest end of the waste water treatment device and the filter plate is provided with a water inlet, and the other side of shell side wall between the lowest end of the waste water treatment device and the filter plate is provided with an air vent; the shell side wall above the airflow baffle is provided with an inspection hole; and the downflow weir is provided with a water outlet. The integrated chemical laboratory waste water treatment device provided by the invention can be used for comprehensively treating complicated waste water.

Description

technical field [0001] The invention relates to an integrated chemical laboratory wastewater treatment method and device, belonging to the technical field of energy saving and environmental protection. Background technique [0002] Wastewater discharged from chemical laboratories is divided into two categories, one is high-concentration hazardous waste liquid, which is usually collected separately and handed over to units with hazardous waste business licenses for treatment; the other is cleaning laboratory equipment and glassware. The discharge of comprehensive wastewater containing low concentrations of acids, alkalis, heavy metals, and organics. For this type of wastewater, most chemical laboratories do not have pollution control facilities, but only adopt simple direct discharge or dilution methods, and only a few have neutralization tanks. And centralized collection, registration, transfer and processing measures. Laboratory wastewater has the characteristics of indete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06
Inventor 叶恒朋杜冬云
Owner SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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