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Electrochemical phosphorus removal device and phosphorus removal method

An electrochemical and electrode plate technology, applied in the field of devices for phosphorus removal using electrochemical technology, can solve the problems of substandard treatment of high-concentration phosphorus-containing sewage, large equipment footprint, and high treatment costs, avoiding electrolytic short-flow, The effect of reducing floor space and high processing efficiency

Pending Publication Date: 2020-07-28
浙江美纳环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems in the prior art of treating phosphorus-containing sewage, such as large amount of mud, large area occupied by equipment, high treatment cost, and substandard treatment of high-concentration phosphorus-containing sewage, the invention provides a method for treating high-concentration inorganic wastewater by using electrochemical technology. Device and phosphorus removal method for phosphorus wastewater and high-concentration organic phosphorus wastewater

Method used

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  • Electrochemical phosphorus removal device and phosphorus removal method
  • Electrochemical phosphorus removal device and phosphorus removal method
  • Electrochemical phosphorus removal device and phosphorus removal method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] The controlled process parameters: the electrode plate spacing is 2cm, the working voltage between the electrode plates is 2v, the sewage electrolysis time is 30min, and the electrode water ratio is 28m 2 : 1m 3 , the current density is 50A / m 2 , its power supply is high-frequency pulse DC power supply, the pulse frequency is 5000Hz, the duty ratio is 10%, the aeration volume of the aeration port 224 is 5L / (L·min), and the aeration volume of the aeration port 123 is 20L / (L·min), the pH value of the sewage was adjusted to 8 in the secondary coagulation reaction tank.

[0072] Phosphating surface treatment sewage containing 256 mg / L of inorganic phosphorus (calculated as P) enters the primary coagulation reaction tank 20 through the water inlet 9 for aeration and mixing, and the phosphorus-containing sewage after aeration and mixing enters the secondary coagulation reaction. Tank 21, start the dosing system at the same time, adjust the pH value of the sewage to 8, stir ...

Embodiment 2

[0074] The controlled process parameters: the electrode plate spacing is 1.5cm, the working voltage between the electrode plates is 1v, the electrolysis time is 10min, and the electrode water ratio is 28m 2 : 1m 3 , its power supply is high-frequency pulsed DC power supply, and the current density is 100A / m 2 , the pulse frequency is 20000Hz, the duty ratio is 100%, the aeration volume of the aeration port 24 is 10L / (L·min), the aeration volume of the aeration port 123 is 40L / (L·min), and the second The pH value of the sewage was adjusted to 8 in the stage coagulation reaction tank.

[0075] Phosphating surface treatment sewage containing 256 mg / L of inorganic phosphorus (calculated as P) enters the primary coagulation reaction tank 20 through the water inlet 9 for aeration and mixing, and the phosphorus-containing sewage after aeration and mixing enters the secondary coagulation reaction. Tank 21, start the dosing system at the same time, adjust the pH value of the sewage t...

Embodiment 3

[0077] The controlled process parameters: the electrode plate spacing is 4cm, the working voltage between the electrode plates is 3v, the electrolysis time is 20min, and the electrode water ratio is 28m 2 : 1m 3 , its power supply is high-frequency pulsed DC power supply, and the current density is 100A / m 2 , the pulse frequency is 10000Hz, the duty ratio is 50%, the aeration volume of the aeration port 24 is 15L / (L·min), the aeration volume of the aeration port 123 is 30L / (L·min), and the second The pH value of the sewage was adjusted to 9 in the first stage coagulation reaction tank.

[0078] Phosphating surface treatment sewage containing 256 mg / L of inorganic phosphorus (calculated as P) enters the primary coagulation reaction tank 20 through the water inlet 9 for aeration and mixing, and the phosphorus-containing sewage after aeration and mixing enters the secondary coagulation reaction. Tank 21, start the dosing system at the same time, adjust the pH value of the sewag...

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Abstract

The invention discloses an electrochemical phosphorus removal device and a phosphorus removal method, and belongs to the technical field of environmental engineering sewage treatment. The electrochemical phosphorus removal device is sequentially provided with a reaction zone and an electrolysis zone, the reaction zone comprises two stages of coagulation reaction tanks which are separated through baffle plates, the electrolysis zone comprises a containing groove, a water distribution area, an electricity connection electrode plate and an induction electrode plate, and an overflow groove is formed in the upper part of the containing groove. The device disclosed by the invention has the advantages that the passivation of the electrode plates can be reduced, the sludge amount after sewage treatment is small, the occupied area of equipment is small, the electrode-water ratio is large, the treatment cost is low, the device can be combined with the existing phosphorus removal equipment for use, and the device is also suitable for pretreatment on high-concentration phosphorus-containing sewage.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering sewage treatment, in particular to a device for removing phosphorus by electrochemical technology and a method for removing phosphorus. [0002] technical background [0003] Phosphorus-containing wastewater is commonly found in the surface treatment industry of mechanical parts, pharmaceutical and chemical industries, aquaculture and slaughtering industries, and domestic sewage. Wastewater with excessive phosphorus is discharged into the water body, which will cause ecological deterioration such as eutrophication, discoloration, red tide, and fish death. It is a very serious source of environmental pollution. [0004] At present, the most common inorganic phosphorus wastewater treatment processes in China include calcium phosphorus removal and iron-based coagulant phosphorus removal. The disadvantage of the calcium phosphorus removal process is that the amount of mud is large, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06C02F103/16C02F101/14C02F101/10
CPCC02F1/463C02F1/465C02F1/4672C02F1/66C02F1/722C02F1/76C02F9/00C02F2101/105C02F2101/14C02F2103/16
Inventor 陈敏感
Owner 浙江美纳环保科技有限公司
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