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Method for treating heavy metal-containing pollutant wastewater

A treatment method and technology for heavy metal ions, which are applied in biological water/sewage treatment, water/sludge/sewage treatment, water pollutants, etc., can solve the problems of high cost and complicated operation, and achieve low cost, simple operation, and reduced The effect of heavy metal content

Active Publication Date: 2012-11-28
XJ LIANHUA INT L ENVIRONMENTAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, there are still some technical defects in the existing technology, such as complicated operation, high cost, etc., so further improvement is needed

Method used

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  • Method for treating heavy metal-containing pollutant wastewater
  • Method for treating heavy metal-containing pollutant wastewater
  • Method for treating heavy metal-containing pollutant wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] Embodiment 1: the treatment that contains heavy metal ion polluted waste water

[0080] The processing steps of this embodiment are as follows:

[0081] Step A: Bacterial Culture

[0082] (i) Rhodobacter sphaeroides was purchased from China General Microorganism Culture Collection (No. 1.2182). Use an inoculation loop to pick up the Rhodobacter sphaeroides on the solid medium, place it on a petri dish containing 8g of solid medium for streaking, and then culture it at a temperature of 30°C and a pH of 7 for 48 hours;

[0083] The composition of the solid medium is as follows: 15g / L agar, 1.5g / L sodium acetate, 0.5g / L peptone, 0.6g / L sodium bicarbonate, 0.4g / L sodium thiosulfate, 0.3g / L chloride Sodium, 0.12g / L magnesium sulfate and 0.04g / L potassium dihydrogen phosphate; the solid medium was sterilized at a temperature of 121°C for 20 minutes, and cooled for use;

[0084] (ii) From the solid medium cultivated in (i), select a single colony with a diameter greater tha...

Embodiment 2

[0098] Embodiment 2: the treatment that contains heavy metal ion polluted waste water

[0099] This embodiment is carried out in the same manner as Example 1, except that the heavy metal used is Pb 2+ , Pb in wastewater 2+ The concentration is 0-150mg / L.

[0100] ICP-AES was used to determine the change of metal Pb concentration in water before and after adding Rhodobacter sphaeroides, Pb 2+ The removal rate results are attached figure 2 shown. It can be seen from the figure that the removal rate of Pb decreases with the increase of metal concentration. When the concentrations of Pb in the solution are 0, 20, 50, 100, and 150 mg / L, the removal rates of Pb are 93%, 91%, 48%, 40%, and 32% when reacting in the microbial treatment device for different times , to achieve a good removal effect.

Embodiment 3

[0101] Embodiment 3: the treatment that contains heavy metal ion polluted waste water

[0102] This embodiment is carried out in the same manner as Example 1, except that the heavy metal used is Zn 2+ , Zn in wastewater 2+ The concentration is 500mg / L.

[0103] Determination of metal Zn in water before and after adding Rhodobacter sphaeroides by ICP-AES 2+ Concentration change, Zn 2+ The removal rate was 80%, achieving a good removal effect.

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Abstract

The invention relates to a method for treating heavy metal-containing pollutant wastewater. The method comprises the steps of bacteriorhodopsin culture, culture of heavy metal ion resistant bacteria, heavy metal ion-containing wastewater treatment and the like. The method provided by the invention is advanced, short in process flow, simple in operation and low in cost; compared with the prior art, the cost is reduced by 20-30%; the method is capable of effectively reducing the concentration of heavy metal ions in the wastewater and greatly reducing the quantity of heavy metals in outlet water and also capable of realizing industrial treatment; and therefore, the method is a quite ideal heavy metal-containing wastewater treating method.

Description

【Technical field】 [0001] The invention relates to the field of wastewater treatment. More specifically, the present invention relates to a method for treating waste water polluted with heavy metals. 【Background technique】 [0002] At present, heavy metal pollution is one of the most harmful water pollution problems. Heavy metals are discharged into water bodies through man-made pollution sources such as mining, metal smelting, metal processing and chemical production wastewater, fossil burning, pesticide application and domestic garbage. Heavy metals are highly toxic, difficult to decompose, easy to be bioaccumulated and biomagnified, which not only pollute water sources, but also seriously threaten human survival and health. [0003] With the frequent sudden heavy metal pollution incidents in recent years, heavy metal pollution has attracted more and more attention. At present, the main remediation methods of heavy metal contaminated wastewater include dilution method, c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F101/20
Inventor 贾莹莹潘登周俊强玄黎勇卫阿四鲍东亮高境曾庆学黄成静
Owner XJ LIANHUA INT L ENVIRONMENTAL
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