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Treatment method of high-concentration ethylene amine wastewater

A treatment method and technology for wastewater treatment, applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., to achieve the effects of simple process, easy operation and low investment in equipment

Active Publication Date: 2021-11-02
SHANDONG LIANMENG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this patent, ethylenediamine (EDA), diethylenetriamine (DETA), piperazine, hydroxyethylethylenediamine (AEEA) and other organic amines such as ethyleneamine organic amines cannot be decomposed under the action of anaerobic bacteria; and Organic amines such as ethylenediamine (EDA), diethylenetriamine (DETA), piperazine, and hydroxyethylethylenediamine (AEEA) have a bactericidal effect and can kill sludge bacteria, so this process is not suitable for ethyleneamine class wastewater treatment

Method used

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  • Treatment method of high-concentration ethylene amine wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1. Early stage: sludge inoculation

[0041] Add water to the anaerobic pool A pool and the aerobic pool O1-O4 pool until the water comes out of the O4 pool. Turn on all propellers in the anaerobic tank to stir, turn on one fan in the aerobic tank for aeration, open the O4 tank to strip air from the return pipe of the anaerobic tank, and establish a water return between the aerobic tank and the anaerobic tank, so that the water in the Cycle between anaerobic pool and aerobic pool O1-O4. Control the water temperature at 20-25°C, add sewage treatment activated sludge to the anaerobic tank, and carry out bacterial inoculation. When the activated sludge content mlvss reaches 2-3g / L, the sludge addition ends. After the sludge dosing is completed, keep the fan in the aerobic pool running for 24 hours. Add wastewater containing ammonia, methanol, and phosphorus to the anaerobic pool A after the stuffy exposure, supplement nitrogen sources, carbon sources, and phosphorus sour...

Embodiment 2

[0054] 1. Early stage: sludge inoculation

[0055] Add water to the anaerobic pool A pool and the aerobic pool O1-O4 pool until the water comes out of the O4 pool. Turn on all propellers in the anaerobic tank to stir, turn on one fan in the aerobic tank for aeration, open the O4 tank to strip air from the return pipe of the anaerobic tank, and establish a water return between the aerobic tank and the anaerobic tank, so that the water in the Cycle between anaerobic pool and aerobic pool O1-O4. Control the water temperature at 25-30°C, add sewage treatment activated sludge to the anaerobic tank, and carry out bacterial inoculation. When the activated sludge content mlvss reaches 3-4g / L, the sludge addition ends. After the sludge dosing is completed, keep the fan in the aerobic pool running for 24 hours. After the stuffy exposure is over, add wastewater containing ammonia, methanol, and phosphorus to the anaerobic pool A, supplement nitrogen sources, carbon sources, and phosph...

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Abstract

The invention provides a treatment method of high-concentration ethylene amine wastewater, and belongs to the technical field of wastewater treatment. The method comprises the steps of culturing and domesticating anti-toxic and high-activity bacteria and treating wastewater, wherein the step of culturing and domesticating the anti-toxic and high-activity bacteria comprises early-stage sludge inoculation, middle-stage sludge adaptability domestication and later-stage sludge anti-toxic domestication. The treatment method of the high-concentration ethylene amine wastewater has the advantages that the process is simple, the operation is simple and convenient, the investment of a sewage treatment device is low, auxiliary materials such as liquid caustic soda, a flocculating agent, an oxidizing agent and the like are basically not consumed, only rotating equipment such as a fan, a propeller and the like consume electricity, the wastewater treatment cost is low, ethylene amine organic amine wastewater can be continuously treated on a large scale, the COD in the treated effluent is less than or equal to 40 mg / L, the ammonia nitrogen is less than or equal to 2 mg / L, the total nitrogen is less than or equal to 25 mg / L, the content of organic amine is 0, and the conversion rate reaches 100%.

Description

technical field [0001] The invention relates to a treatment method for high-concentration ethyleneamine wastewater, belonging to the technical field of wastewater treatment. Background technique [0002] Ethyleneamine wastewater contains a high concentration of organic amines, with a content of about 1%-2%. The main components include ethylenediamine (EDA), diethylenetriamine (DETA), piperazine, and hydroxyethylethylenediamine (AEEA). etc. This part of organic amine is often used to make fungicides, which can kill bacteria, and it is difficult to convert into inorganic ammonia, so general sewage treatment cannot be converted and removed. [0003] At present, domestic organic amine wastewater treatment technology solutions include: [0004] Patent CN111252950A discloses a kind of organic amine wastewater treatment process, including selective pre-oxidation unit, primary precipitation unit, non-selective oxidation unit, secondary precipitation unit, and its specific steps are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F3/34C02F101/38
CPCC02F3/30C02F3/341C02F2101/38Y02E50/30
Inventor 祖玉波胡全力吴广明吴阁范立奎王玉飞常吉松
Owner SHANDONG LIANMENG CHEM
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