Biological desulfurizing device for transforming sulfur-containing compound to elemental sulfur

A biological desulfurization and elemental sulfur technology, applied in the direction of sustainable biological treatment, biological water/sewage treatment, water pollutants, etc., can solve problems such as odor and odor, lower pH, and lower quality of agricultural products

Inactive Publication Date: 2007-09-19
阮文权 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Sulfate produces H under anaerobic conditions 2 S, severely corroded treatment facilities and drainage pipes, and has a foul smell, seriously pollutes the atmosphere, and will cause adverse reactions after inhalation, and severe cases will be life-threatening
In addition, the discharge of sulfate wastewater into the water body will acidify the receiving water body, lower the pH, and endanger aquatic organisms; discharge into the farmland will destroy the soil structure, make the soil harden, reduce the yield of crops and reduce the quality of agricultural products

Method used

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  • Biological desulfurizing device for transforming sulfur-containing compound to elemental sulfur
  • Biological desulfurizing device for transforming sulfur-containing compound to elemental sulfur

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1: Flue gas desulfurization

[0017] Flue gas produced by thermal power plants, in SO 2 The absorption tower is absorbed by NaOH solution; the absorption liquid is reacted with the citric acid fermentation wastewater in the anaerobic sulfate reduction anaerobic reactor inoculated with anaerobic granular sludge, and the temperature is controlled at 35-37 °C and the pH value is 6.5-7.5; the gas produced Pass into the H2S absorption tank and absorb H with NaOH solution 2 S, the absorption liquid enters the elemental sulfur generation reactor, in the elemental sulfur generation reactor: the temperature is 30-40°C, the pH value is 7-8, the ORP is -340mv~-360mv, and finally the elemental sulfur is precipitated in the sedimentation tank, and the Filter and store.

Embodiment 2

[0018] Embodiment 2: Desulfurization of sulfate wastewater

[0019] The molasses alcohol wastewater with high concentration of sulfate reacts in the sulfate reduction anaerobic reactor inoculated with anaerobic granular sludge, the temperature is controlled at 35-37 °C, and the pH value is 6.5-7.5; the generated gas is passed into H 2 S absorption tank absorbs H with NaOH solution 2 S, the absorption liquid enters the elemental sulfur generation reactor, in the elemental sulfur generation reactor: the temperature is 30-40°C, the pH value is 7-8, the ORP is -340mv~-360mv, and finally the elemental sulfur is precipitated in the sedimentation tank, and the Filter and store.

Embodiment 3

[0020] Example 3: Desulfurization of sulfide-containing wastewater

[0021] Wastewater with a sulfide concentration of 400mg / L enters the elemental sulfur generation reactor. In the elemental sulfur generation reactor: the temperature is 30-40°C, the pH value is 7-8, the ORP is -340mv~-360mv, and finally the elemental sulfur is in the sedimentation tank Precipitated in medium and stored after press filtration.

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Abstract

An apparatus is provided for removing smoke, composition containing sulfur in waste water and recycling simple substance sulfur by effective biology reactor and integrated autocontrol. A desulfurizing apparatus is mainly composed of SO2 absorbing tower, sulfate deoxidized anaerobic reactor, H2S tourill, simple substance sulfur generating reactor, sulfur precipitation tank, cycle pump, filter press and sulfur storage pot.

Description

technical field [0001] A biological desulfurization device that converts sulfur-containing compounds into elemental sulfur. Specifically, it is a set of devices that can remove sulfur compounds in flue gas and wastewater and recover elemental sulfur through high-efficiency bioreactors and integrated automatic control. Background technique [0002] In the atmospheric environment, sulfur dioxide emitted by humans has become the primary pollutant, especially in my country. my country's most important primary energy is coal, accounting for about 70% of my country's energy consumption. Coal usually contains 0.25% to 7% sulfur, and the SO produced during the combustion process 2 It is discharged into the atmosphere along with the flue gas, causing acid rain. According to statistics, in 2005, the total emission of sulfur dioxide in the country was 25.49 million tons, exceeding the total control target (18 million tons) by 7.49 million tons, of which the total emission of industr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F3/34C02F3/02B01D53/50C02F101/00
CPCY02W10/10
Inventor 阮文权邹华严群顾建
Owner 阮文权
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