Treatment device and method for wastewater containing ammonia nitrogen and phosphorus

A treatment device and treatment method technology, applied in water/sewage treatment, oxidized water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of waste residue, high treatment cost, easy scaling and blockage, etc., to achieve Reduced processing costs, simple device structure, and environmentally friendly effects

Inactive Publication Date: 2019-04-19
CENT SOUTH UNIV
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Although the operating cost of the biological method is low, microorganisms need to be cultivated and domesticated, and the biological treatment occupies a large area and has strict temperature requirements; while the chemical precipitation method and stripping method have high costs and are difficult to meet the standards; the membrane interception method has high requirements for water quality and is easy to accumulate. Scale blockage increases treatment costs; although the electrolytic catalytic oxidation method occupies a small area, the ammonia nitrogen treatment reaction speed, the ammonia nitrogen or total phosphorus index after wastewater treatment can be stably below 0.5mg/L, but the process is difficult to control and the treatment cost High, the cathode material is not corrosion-resistant, and the ammonia nitrogen or total phosphorus indicators are difficult to meet the standards at the same time.
[0004] CN108751325A discloses an ammonia nitrogen wastewater treatment system and ammonia nitrogen wastewater treatment method, CN108793518A discloses an ammonia nitrogen wastewater treatment method and device, CN108249645A discloses an ammonia nitrogen wastewater treatment system, and CN104230061A discloses a ammonia nitrogen wastewater catalytic oxidation treatment method, both It is a device or method that uses electrolysis to

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  • Treatment device and method for wastewater containing ammonia nitrogen and phosphorus

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Example

[0064] A treatment device for wastewater containing ammonia, nitrogen and phosphorus, embodiments 1 to 4

[0065] Such as figure 1 As shown, the device includes a waste water tank 1, a pH value adjustment unit 2, an upper tank 3, an electrolyte batching device 4, and an electrolytic catalytic oxidation unit 5; the waste water tank 1 is connected to the pH value adjustment unit 2 through a water pump 1-1 The pH value adjustment unit 2 is connected to the high tank 3; the high tank 3 is respectively connected with the electrolyte batching device 4 and the water inlet 5-1 at the lower end of the electrolytic catalytic oxidation unit 5; the electrolyte batching device 4 and The water inlet 5-1 at the lower part of one end of the electrolytic catalytic oxidation unit 5 is connected; the water outlet 5-2 of the electrolytic catalytic oxidation unit 5 is arranged at the upper part of the other end of the electrolytic catalytic oxidation unit 5; the electrolytic catalytic oxidation unit ...

Example Embodiment

[0067] A kind of treatment method of ammonia nitrogen and phosphorus wastewater embodiment 1

[0068] Pump the ammonia-nitrogen and phosphorus-containing wastewater 1 in the wastewater tank 1 into the pH adjustment unit 2. After adjusting the pH of the wastewater to 10.1 with calcium hydroxide, the alkaline wastewater is introduced into the upper tank 3 for storage, and then a part of the alkaline wastewater is stored from the upper The tank 3 flows into the electrolyte batching device 4, and sodium chloride is added to prepare an electrolyte with a chloride ion concentration of 100g / L. The electrolyte and the remaining alkaline wastewater in the upper tank 3 have a volume ratio of 0.03:1 (electrolytic catalytic oxidation) The chloride ion concentration of the mixed solution in the unit is 2.9g / L), and the mixed water inlet is 5m 3 / h, through the water inlet 5-1 at the lower end of the electrolytic catalytic oxidation unit 5, the mixture flows into the electrolytic catalytic oxid...

Example Embodiment

[0070] A kind of treatment method of ammonia nitrogen and phosphorus wastewater embodiment 2

[0071] Pump the ammonia-containing wastewater 1 in the wastewater tank 1 into the pH adjustment unit 2. After adjusting the pH value of the wastewater to 11.5 with calcium hydroxide, the alkaline wastewater is introduced into the upper tank 3 for storage, and then a part of the alkaline wastewater is transferred from the upper tank 3 Flow into the electrolyte batching device 4, add sodium chloride to prepare an electrolyte with a chloride ion concentration of 130g / L, the electrolyte and the remaining part of the alkaline wastewater in the upper tank 3 have a volume ratio of 0.04:1 (mixed in the electrolytic catalytic oxidation unit The chloride ion concentration of the liquid is 5.0g / L), and the mixed water intake is 3m 3 / h, through the water inlet 5-1 at the lower end of the electrolytic catalytic oxidation unit 5, the mixture flows into the electrolytic catalytic oxidation unit 5, and...

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Abstract

The invention discloses a treatment device and method for wastewater containing ammonia nitrogen and phosphorus. The device comprises a wastewater tank, a pH regulation unit, a high-position tank, anelectrolyte preparation device and an electrolytic catalytic oxidation unit; the wastewater tank is connected with the pH regulation unit through a water pump; the pH regulation unit is connected withthe high-position tank; the high-position tank is connected with the electrolyte preparation device and a water inlet in the lower portion of one end of the electrolytic catalytic oxidation unit; theelectrolyte preparation device is connected with the water inlet in the lower portion of one end of the electrolytic catalytic oxidation unit; a water outlet of the electrolytic catalytic oxidation unit is formed in the upper portion of the other end of the electrolytic catalytic oxidation unit. The invention also discloses a treatment method for wastewater containing ammonia nitrogen and phosphorus. The device is simple in structure, resistant to corrosion and convenient to operate; in the method, the emission concentration of ammonia nitrogen is smaller than or equal to 3 mg/L, the emissionconcentration of phosphorus is smaller than or equal to 0.25 mg/L, and the integrated wastewater discharge standard of the Ministry of Environmental Protection is met; the process is simple, the costis low, and no waste gas is emitted.

Description

technical field [0001] The invention relates to a wastewater treatment device and method, in particular to a wastewater treatment device and method containing ammonia nitrogen and phosphorus. Background technique [0002] The smelting or processing of zinc, manganese, tungsten and other metals will produce a large amount of wastewater containing ammonia nitrogen and phosphorus. If it is directly discharged, it will cause eutrophication in a large area of ​​the water body, leading to the deterioration of the water environment and directly threatening human health. In particular, the ammonia nitrogen and phosphorus wastewater discharged by some industries has complex components, strong toxicity, and strong carcinogenicity, thereby further deepening the pollution of water bodies. At the same time, it also brings great difficulties to the water supply project, such as the deterioration of water quality, the formation of biofouling to block pipes and equipment, and the impact of ...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F1/72B01D53/18C02F101/16C02F101/10
CPCB01D53/18C02F1/4672C02F2101/10C02F2101/16
Inventor 楚广银瑰夏邵峰楚盛
Owner CENT SOUTH UNIV
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