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Efficient anaerobic reactor resistant to high-concentration sulphate and method for treating wastewater using efficient anaerobic reactor

An anaerobic reactor and sulfate technology, applied in anaerobic digestion treatment, chemical instruments and methods, separation methods, etc., can solve the problems of strong inhibition, low anaerobic system treatment efficiency, poor operability, etc., and achieve relief Toxic action, effective resistance to poisoning action, high treatment load effect

Inactive Publication Date: 2015-05-06
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problems of poor operability in the treatment of high-concentration sulfate wastewater in the prior art, strong inhibitory effect on methanogens in the sulfate reduction process, and low treatment efficiency of anaerobic systems, the present invention provides a high-concentration sulfate-resistant High-efficiency anaerobic reactor and its method for treating wastewater

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  • Efficient anaerobic reactor resistant to high-concentration sulphate and method for treating wastewater using efficient anaerobic reactor
  • Efficient anaerobic reactor resistant to high-concentration sulphate and method for treating wastewater using efficient anaerobic reactor

Examples

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Effect test

Embodiment 1

[0041] Such as figure 1 and figure 2 As shown, a high-efficiency anaerobic reactor resistant to high-concentration sulfate includes an internal circulation anaerobic reactor 6, and also includes an air guide pipe 11, a return air pipe 13, a gas collection tank 14, a complex iron oxidation tower 16 and a water seal Tank 17; internal circulation anaerobic reactor 6 includes fixed platform 1, internal circulation jet device 4, water inlet pipe 5, two-phase separator 7, three-phase separator 8, water outlet pipe 9 and outlet weir 10; internal circulation jet device 4 The bottom of the internal circulation anaerobic reactor 6 is fixed by the fixed table 1, wherein the internal circulation jet 4 includes a motor 401, a jet port 403, a high-speed paddle 404, a diffusion port 405, a draft tube 406 and a steady flow port 407, and the motor 401 and high-speed paddle 404 are connected by a rotating shaft, and a jet baffle 402 is also arranged on the rotating shaft. The jet baffle 402, ...

Embodiment 2

[0050] A high-efficiency anaerobic reactor resistant to high-concentration sulfate, the basic structure is the same as that of Example 1, the difference is that the height of the air distribution port 3 from the high-speed paddle 404 is 30 cm, and the funnel taper angle is 75 °. The diameter of the cone bottom is 3 / 4 of the diameter of the draft tube 406 .

[0051] The wastewater quality of a monosodium glutamate production enterprise in Henan Province after pretreatment is pH: 6-8; CODcr: 25000mg / L; SO 4 2- : 7000mg / L. Belong to high-concentration sulfate organic waste water, process according to the waste water treatment method described in the embodiment 1, waste water is treated with 100m 3 / d The water volume is continuously pumped into the high-concentration sulfate-resistant anaerobic reactor, and the internal circulation water volume is about 5 times to achieve full mixing and dilution, and the Fe in the complex iron oxidant 3+ The concentration is controlled at 0.2...

Embodiment 3

[0053]A high-efficiency anaerobic reactor resistant to high-concentration sulfate, the basic structure is the same as that of Example 1, except that the height of the air distribution port 3 from the high-speed paddle 404 is 25 cm, and the funnel taper angle is 60 °. The diameter of the cone bottom is 1 / 2 of the diameter of the draft tube 406 .

[0054] The wastewater quality of a certain mycin production enterprise in Jiangsu is pH: about 7; CODcr: 35000mg / L; SO 4 2- : 15000mg / L. Belong to high-concentration sulfate organic waste water, process according to the waste water treatment method described in the embodiment 1, waste water is treated with 50m 3 / d The water volume is continuously pumped into the high-concentration sulfate-resistant anaerobic reactor, and the internal circulation water volume is about 6 times to achieve full mixing and dilution, and the Fe in the complex iron oxidant 3+ The concentration is 0.6mol / L, the commissioning and start-up period is 10 week...

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Abstract

The invention discloses an efficient anaerobic reactor resistant to high-concentration sulphate and a method for treating wastewater using the efficient anaerobic reactor, and belongs to the technical field of biological sewage treatment. The invention aims at providing an efficient, stable and hydrogen sulphide toxicity impact resistant anaerobic reactor. The efficient anaerobic reactor disclosed by the invention comprises an internal-circulation anaerobic reactor, a gas guide tube, a reflux gas tube, a gas collection tank, a complexing iron oxidation tower and a water sealing tank, and is an anaerobic reactor with a desulfuration jet flow combining the internal circulation of a liquid and the external circulation of a gas. The process for treating wastewater using the efficient anaerobic reactor is achieved through an efficient anaerobic reaction system, an H2S removal system and a reflux gas pipeline system. Separated H2S is oxidized into an S elementary substance resource by complexing iron for recycling, the gas after H2S is removed enters the reactor through the reflux gas tube to promote removal of H2S, and the treated wastewater finishes a wastewater anaerobic treatment process through an effluent weir. The efficient anaerobic reactor and the method disclosed by the invention are suitable for treating chemical wastewater containing high-concentration sulphate.

Description

technical field [0001] The invention belongs to the technical field of sewage biological treatment, and more specifically relates to a high-efficiency anaerobic reactor resistant to high-concentration sulfate and a method for treating waste water. Background technique [0002] With the rapid development of industry and agriculture, the discharge of industrial wastewater has also increased rapidly, resulting in an increasing load on natural water bodies. Some industrial production processes use a large number of different forms of sulfate, sulfite and thiosulfate. As a result, the types and volume of high-sulfate organic wastewater have also increased significantly, from the original types of wastewater to more than a dozen types of wastewater, including monosodium glutamate wastewater, yeast wastewater, molasses wastewater, citric acid wastewater, and midecamycin wastewater. These wastewaters contain a large amount of organic matter and high concentrations of sulfates, and u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28B01D53/78B01D53/96B01D53/52C01B17/05
Inventor 刘波丁新春李爱民周德超陆鑫王德朋
Owner NANJING UNIV
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