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Process and device for removing hypophosphites and phosphites by advanced oxidation coupling technique

A technology of phosphite and combined use technology, which is applied in the fields of oxidized water/sewage treatment, chemical instruments and methods, water/sewage multi-stage treatment, etc. problem, to achieve the effect of improving oxidation capacity, fast reaction speed and simple process flow

Active Publication Date: 2014-01-01
深圳市万木水务有限公司
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  • Abstract
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Problems solved by technology

[0004] Although most projects currently use this process to remove secondary and phosphite, this process has problems such as complex treatment process, long residence time, high pH adjustment cost, high sludge production, and difficult to guarantee the treatment effect.

Method used

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  • Process and device for removing hypophosphites and phosphites by advanced oxidation coupling technique
  • Process and device for removing hypophosphites and phosphites by advanced oxidation coupling technique

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] Figure 1 to Figure 2 The reference numerals in the figure are: water inlet pump 1; first liquid flow meter 2; hydrogen peroxide storage tank 3; second liquid flow meter 4; first centrifugal pump 51; second centrifugal pump 52; ozone generator 6; An aeration head 71; a second aeration head 72; a first gas flow meter 81; a second gas flow meter 82; a third liquid flow meter 9; a ferrous sulfate storage tank 10; an ozone tail gas destroyer 11; sludge sedimentation Pool 12; Section I reaction pool 13; Section II reaction pool 14.

[0027] like figure 1 Shown, a kind of advanced oxidation combined technology removes the technology of times, phosphite, comprises the following steps:

[0028] S1. Inject ozone and hydrogen peroxide into the wastewater, and oxidize hypophosphite and phosphite to orthophosphate through the combined use of ozon...

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Abstract

The invention relates to industrial wastewater treatment, particularly a device for removing hypophosphites and phosphites by an advanced oxidation coupling technique in industrial wastewater treatment. The invention provides the device for removing hypophosphites and phosphites by an advanced oxidation coupling technique, which comprises a I stage reaction pond, a II stage reaction pond, a hydrogen peroxide injection device, an ozone injection device and a ferrous sulfate injection device. The I stage reaction pond is in communication with the II stage reaction pond. The I stage reaction pond is provided with a water inlet. The ozone injection device is connected to the I stage reaction pond. The ferrous sulfate injection device is connected to the II stage reaction pond. The ozone injection device is connected to the II stage reaction pond. The device provided by the invention has the advantages of high reaction speed, favorable removal effect, simple technical process, no need of regulating pH value, and low sludge production quantity.

Description

technical field [0001] The invention relates to industrial wastewater treatment, in particular to a process and device for removing hypophosphite and phosphite by advanced oxidation combined technology in industrial wastewater treatment. Background technique [0002] The water quality of electroplating and circuit board wastewater is complex. In addition to heavy metal ions and cyanide such as chromium, copper, nickel, cadmium, zinc, gold, and silver, there are also phosphorus, nitrogen, and organic matter. Among them, the source of phosphorus is mainly phosphite, the reduction product of hypophosphite, and there is also some unutilized hypophosphite. [0003] At present, the removal technology for heavy metal ions and organic matter is very mature, the treatment cost is low, and it can ensure that the effluent is stable and up to standard. For secondary and phosphite, multi-stage treatment methods are often used now: the first stage oxidizes secondary and phosphite to orth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F1/78C02F1/72
Inventor 王宏杰董文艺周倍立李婷韩琦刘军
Owner 深圳市万木水务有限公司
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