Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for treating persistent organic pollutant wastewater

A technology for organic pollutants and organic pollution, applied in the new process field of continuous wastewater treatment, can solve the problems of difficult treatment of industrial wastewater and high cost, and achieve the effect of reducing treatment costs and saving energy consumption

Inactive Publication Date: 2009-09-09
HUAZHONG UNIV OF SCI & TECH
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention aims at the current ubiquitous problems of refractory organic pollutant industrial wastewater, such as difficult treatment and high cost, and provides a low-cost and high-efficiency new method for treating industrial wastewater containing refractory aromatic and heterocyclic organic pollutants

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: the acquisition of basidiomycetes

[0031] The strains in this case can be purchased from the General Microbiology Center of the China Committee for the Collection of Microbial Cultures, or can be screened in nature through the following operations.

[0032] Select the wood with white rot in nature or the basidiomycetes grown in the forest after the rain as the strain screening source, and use tweezers to pick the internal tissue of the screening source after surface disinfection of the screening source with alcohol, and transfer it to Add streptomycin resistance screening plate, culture at room temperature until mycelium grows, and then purify the grown mycelium under sterile conditions, and after lignocellulose degradation evaluation, transfer the high-efficiency strain to the inclined test tube After being covered with mycelia, store in a refrigerator at 4°C for later use.

Embodiment 2

[0033] Embodiment 2: preparation of basidiomycete solid bacterial classification

[0034] The basidiomycete Pleurotus sp. (Pleurotus) slant strain preserved in the refrigerator was placed on the potato slant for activation. After culturing until the mycelium covered the slant, the mycelium slant was taken and inserted into the corn straw medium for cultivation. Place the culture for 7 days, and then carry out shallow plate expansion culture for 8 days to obtain the solid strains for opening.

Embodiment 3

[0035] Embodiment 3: the continuous treatment method of printing and dyeing wastewater (1)

[0036] Agricultural and forestry waste: rice straw, crushed to 10 mesh for later use.

[0037] Printing and dyeing wastewater: mainly contains various reactive dyes, oxidants and other printing and dyeing auxiliaries.

[0038] The solid bacteria prepared in Example 2 were inoculated into agricultural and forestry wastes at a ratio of 1:6 (mass ratio), the ratio of solid to liquid was 1:3, stirred evenly, and incubated at room temperature for 8 days to obtain the phase transfer carrier.

[0039] Divide 1000kg of the regenerated phase transfer carrier into 96 batches, add each batch to 3 tons of printing and dyeing wastewater for phase transfer, stir evenly, the phase transfer temperature is 30°C, and the phase transfer time is 2h; after each batch of phase transfer, immediately carry out another batch Phase transfer of organic pollutants in wastewater. Each batch of carriers after pha...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides a method for treating persistent organic pollutant wastewater. The method uses the agricultural and forestry waste residua which are treated by basidiomycetes as the phase transition carrier. The phase transition of organic pollutant is executed through adding phase transition carrier into the wastewater. The regeneration and circulating treating of phase transition capability of phase transition carrier are realized through a continuous solid fermentation technique. A continuous wastewater treating novel technique of phase transition-phase transition carrier regeneration is formed. The method is effectively combined with the advantages of physical carrier, chemical flocculation and biological degradation. The method also provides an effective path for treating the hard-to-degrade organic pollutant wastewater with low cost and high efficiency.

Description

technical field [0001] The invention relates to a treatment method for refractory organic pollutant wastewater, in particular to a new continuous wastewater treatment process using phase transfer-phase transfer carrier regeneration. Background technique [0002] my country is a big producer of chemical and pharmaceutical intermediates. In the process of production and use, a large amount of refractory organic pollutants are inevitably produced. Most of the organic pollutants are aromatic and heterocyclic compounds containing benzene rings, etc. Complex and extreme environmental conditions make it difficult to handle. Taking dyes as an example, my country’s dye output accounts for about 60% of the world’s total. For every 1 ton of dye produced, 2% of the product will be lost with wastewater, and the loss in the printing and dyeing process will be even greater, accounting for about 10% of the dye used. Here comes serious pollution. Dye wastewater has the characteristics of "th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C02F9/14C02F3/34C02F1/52C02F1/28
Inventor 张晓昱王宏勋颜克亮余洪波邬建国马富英杨洋
Owner HUAZHONG UNIV OF SCI & TECH