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ODB-2 alkaline waste water treatment method

A technology of wastewater treatment and treatment method, applied in aerobic process treatment, anaerobic digestion treatment, sustainable biological treatment and other directions, can solve the problems of poor biodegradability and difficult treatment, and achieve the effect of reducing the consumption of oxidants

Inactive Publication Date: 2006-09-20
SHANGHAI WEIYE ENVIRONMENTAL PROTECTION ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

ODB-2 alkaline wastewater is the wastewater with the highest concentration of organic matter and the worst biodegradability among the four streams of wastewater. It is quite difficult to treat. At present, there is no effective treatment method at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The invention is further illustrated by the test results presented in the following table.

[0015] operation hours

(d)

flooded

COD Cr (mg / L)

Effluent of the aerobic pool

COD Cr (mg / L)

Aerobic pool - 1 out of water

COD Cr (mg / L)

Aerobic pool - 2 outlets

COD Cr (mg / L)

12

6444

5835

4834

3689

14

6500

5788

4660

3549

16

6312

5705

4526

3056

18

6048

5613

4589

2944

20

6980

5982

4534

3313

22

7450

5865

4623

3504

24

7712

5800

4812

3564

26

7562

5904

4786

3507

28

7432

5820

4702

3348

30

7560

5908

4756

3392

[0016] In order to verify that the treatment of ODB-2 alkaline wastewater by the above-ment...

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Abstract

A process for treating the alkaline sewage generated by preparing thermosensitive dye ODB-2 features use of the combination of microbial cometabolism, chemical oxidizing and biochemical treating.

Description

technical field [0001] The invention belongs to the field of water pollution control, and relates to a technology for treating alkaline wastewater produced by 2-anilino-3-methyl-6-dibutylaminofluorane (thermosensitive dye, ODB-2 for short). Background technique [0002] 2-anilino-3-methyl-6-dibutylaminofluorane (abbreviated as ODB-2) is a thermosensitive dye used in various grades of thermosensitive paper such as thermosensitive copy paper and fax paper. During the ODB-2 production process, four streams of wastewater are produced, namely ODB-2 alkaline wastewater (COD>40000mg / L, pH>12.0, salt>5.0%), ODB-2 acidic wastewater (COD=500~600mg / L, pH <1.0, sulfuric acid>16%), 4-dibutylamino keto acid (BBA for short) wastewater (COD>2000mg / L, pH=2.0-3.0, salt>7.0%), vacuum pump water (COD=3000-5000mg / L , pH=7.0-8.0). The ODB-2 acidic wastewater in these four streams of wastewater can be neutralized with lime, or absorbed by activated carbon and then evaporated...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/02C02F3/28C02F3/30
CPCY02W10/10
Inventor 丁伟曹国民张大年
Owner SHANGHAI WEIYE ENVIRONMENTAL PROTECTION ENG