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Application of filamentous oil producing alga in treatment of industrial phenol pollution in environment

A technology of industrial phenol and oleaginous algae, which is applied in the field of environmental engineering, can solve the problems of no oleaginous algae, achieve strong absorption and degradation capabilities, prevent secondary pollution, and have strong stress resistance

Inactive Publication Date: 2017-06-30
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] But at this stage, there are no relevant reports on the use of oleaginous algae in remediation of wastewater

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The elliptical track pool with a length of 3.8 meters and a width of 1.9 meters is used for outdoor cultivation, and the small yellow-haired algae is used for the test. The cells of the small yellow-haired algae are cultivated in the track pool for about 10 cells with a biomass density of 0.1g / L. -15 days, after the biomass reaches 1-1.5g / L, use a three-legged filter cloth centrifuge to harvest, and inoculate at a density of about 0.8-1g / L into sewage containing about 500-800mg / L phenol During the culture process, the change of phenol concentration in the wastewater was measured by the antipyrine colorimetric method every day. After 4 days of adaptive induction of the first batch of treated cells, the phenol concentration began to decrease, and after another 4 days of treatment, the phenol concentration decreased to 2 mg. / L, the removal rate of phenol reaches 99%. At this time, the cells were harvested and re-inoculated into new wastewater, and treated again. When the ...

Embodiment 2

[0030] Using small yellow hair algae, use 20 40L bubble column reactors for seed cell culture. After 7-8 days, when the biomass reaches about 2.5g / L, the cells are harvested through a three-legged filter cloth centrifuge, and the cells are then coated with The cloth is inoculated in the plug-in wall-mounted reactor, the reactor covers an area of ​​10 square meters, of which the biofilm area can be cultivated 100 square meters, and the inoculation density is 5g / m 2During the cultivation and treatment process, the liquid was continuously circulated through the membrane plane by the circulating water pump, and the BG11 medium was used first. On the 8th day of cultivation, the biomass reached and exceeded 20g / m2 2 After 4 days of adaptive induction treatment period, the concentration of phenol in the water began to decrease significantly, and on the 6th day, the concentration of phenol decreased to 2 mg / L, and the concentration of phenol The removal rate reaches 99%. Replace fres...

Embodiment 3

[0032] Using small yellow thread algae, firstly use 10 elliptical runway pools with a length of 6 meters and a width of 4 meters to prepare seed cells by outdoor cultivation. After 10-15 days, when the biomass reaches about 1.5g / L, the three-legged The cells are harvested by a filter cloth centrifuge, and the cells are inoculated in a plug-in adherent reactor by coating. The reactor covers an area of ​​100 square meters, of which the cultivable biofilm area is 2400 square meters, and the inoculation density is 5g / m2. 2 In the process of cultivation and treatment, the liquid is continuously circulated through the membrane plane by the circulating water pump, and the BG11 medium is used first for 10 days, and the biomass reaches and exceeds 20g / m2. 2 After 5 days of adaptive induction treatment period, it was found that the phenol concentration in the water body began to decrease significantly, and on the 7th day, the phenol concentration decreased to 2 mg / L, Replace fresh sewag...

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Abstract

The invention belongs to the technical field of environmental engineering, and in particular, relates to an application of filamentous oil producing alga tribonema in removal and degradation of industrial phenol pollutants in an environment, and specifically, relates to the application of the filamentous oil producing alga in treatment of industrial phenol pollution in the environment. Compared with unicellular algae, the used filamentous alga has the advantages of easy recovery, strong stress resistance and the like, can directly achieve efficient recovery through filter cloth filtration, low-speed centrifugation and other methods without addition of a flocculant, and prevents water body secondary pollution; at the same time, the tribonema has excellent abilities to absorb and degrade phenol and derivatives thereof and can continuously reduce the phenol concentration to 1-2 mg / L from phenol wastewater with the concentration of 200-800 mg / L, the removal rate of the phenol pollutants can reach 99%, and the oil content of obtained algal biomass can reach 40-50%, and the need of extraction of biological oil can be fully met. The method provides an efficient and low-cost way for resource utilization of industrial phenol-containing wastewater.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering, and in particular relates to the application of a filamentous oleaginous alga tribonema in the removal and degradation of industrial phenolic pollutants in the environment. Background technique [0002] Phenolic compounds are currently one of the main organic pollutants in chemical industry wastewater. The production of coal chemical industry, oil refining, pesticides and printing and dyeing industries will produce different degrees of phenolic pollution problems, among which the problem of coal chemical wastewater is particularly serious. The wastewater More than 50% of COD is caused by phenol pollution, and the concentration of phenol pollution in the coal gasification process can reach up to 6800mg / L. my country is poor in oil and rich in coal, and vigorously developing the coal chemical process based on coal gasification and coal cleanliness is of great significance to my co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32A01G33/00C02F101/34
CPCA01G33/00C02F3/322C02F2101/345Y02A40/80
Inventor 程天佑张维刘天中汪辉周文俊陈林王俊峰高莉丽程文涛
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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