Device and method for removing phosphite in waste water

A phosphite and water distribution device technology, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve problems such as complex treatment processes, and achieve the effects of simple operation, cost reduction, and loose condition control

Pending Publication Date: 2018-07-06
深圳瑞赛环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a device and method for removing phosphite in wastewater in view of the technical problem of complex treatment process existing in the existing phosphite removal device in wastewater

Method used

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  • Device and method for removing phosphite in waste water
  • Device and method for removing phosphite in waste water
  • Device and method for removing phosphite in waste water

Examples

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Effect test

preparation example Construction

[0056] The preparation method of the catalytic filler is: mix the iron-containing material, carbon-containing material, aluminum-containing material, magnesium-containing material, copper-containing material, trace metal, binder and pore-forming agent according to the proportion, add water and stir Aging is formed to form a mixture, and then the mixture is granulated by a granulator to obtain a catalytic filler body, the catalytic filler body is dried, then roasted, and finally cooled to obtain a catalytic filler. The added mass of the water is 3%-9% of the mass of the catalytic packing, the aging time is 10min-25min, the particle diameter of the catalytic packing blank is 20-40mm, and the catalytic packing blank The shape of the body is jagged, olive-shaped or spherical, etc., the drying temperature is 100°C-120°C, the drying time is 1h-2h, and the roasting temperature is 900°C-1200°C, The roasting time is 1h-3h.

[0057] The catalytic packing prepared by this method can pro...

Embodiment 1

[0075] Mix 45% iron fine powder, 23.8% graphite, 15% aluminum powder, 8% magnesium powder, 4% bentonite, 4% hydroxypropyl methylcellulose, 0.2% copper oxide and 5ppm palladium powder according to the proportion, and add mass Continue to stir and age 5% of the mass of the catalytic filler in water for 10 minutes, then granulate the mixture through a granulator to obtain a spherical filler body with a particle size of 20mm, and dry the filler body at 100°C 2h, and finally roasted at 1000°C for 3h under the protection of nitrogen, and the catalytic filler was obtained after natural cooling.

[0076] Use this catalytic packing for three-dimensional electrolytic reaction to treat the electroless nickel plating wastewater. The total phosphorus content in the test wastewater is 3867mg / L. The adjusted wastewater in the regulating tank is introduced into the three-dimensional electrolytic reaction tank, and the three-dimensional electrolytic reaction is aerated for 6 hours. After the t...

Embodiment 2

[0078] Mix 48% iron filings, 18.5% activated carbon, 18% kaolin, 7% magnesium chloride, 5% bentonite, 3% sodium borate, 0.5% copper oxide and 7ppm manganese powder according to the proportion, and the added mass is 6% of the mass of the catalytic filler Continue to stir and age the mixture for 15 minutes, and then granulate the mixture through a granulator to obtain a spherical filler body with a particle size of 25mm. The filler body is dried at 100°C for 2 hours, and finally the filler body is dried under the protection of nitrogen. Calcined at 1010°C for 2 hours, and cooled naturally to obtain the catalytic filler.

[0079] Use this catalytic packing for three-dimensional electrolytic reaction to treat electroless nickel plating wastewater. The total phosphorus content in the test wastewater is 2280mg / L. The adjusted wastewater in the regulating tank is introduced into the three-dimensional electrolytic reaction tank, and the three-dimensional electrolytic reaction is aerate...

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Abstract

The invention belongs to the field of waste water treatment, and relates to a device and method for removing phosphite in waste water. The removal device comprises a regulating pool, a three-dimensional electrolytic reaction pool and a coagulative precipitation pool which are sequentially connected through a pipeline. The removal device removes the phosphite in the waste water mainly through the effect of the three-dimensional electrolytic reaction pool. The waste water enters the three-dimensional electrolytic reaction pool after being regulated through the regulating pool, and is subjected to a three-dimensional electrolytic reaction in the three-dimensional electrolytic reaction pool, and sediment is generated finally in the three-dimensional electrolytic reaction process; and purifiedwater is obtained by removing colloidal impurities and suspended particles in the waste water through the coagulative precipitation pool, and thus the phosphorus content in the waste water can reach the drainage standard regulated by the nation. Furthermore, the removal device is simple, easy to accurately operate, small in floor space and low in maintenance cost, and the removal rate of the phosphite in the waste water is high. The device for removing the phosphite in the waste water is high in operation stability, and can effectively dispose the phosphite in the waste water with different water quality.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, in particular to a device and method for removing phosphite in wastewater. Background technique [0002] Industries such as surface treatment, pesticide synthesis, and chemical raw material synthesis often produce industrial wastewater containing phosphite. For example, in the electroless nickel plating process in surface treatment, the highly reducing sodium hypophosphite reduces nickel ions to form a nickel-phosphorus alloy deposited on the surface of the plated parts to achieve the effect of wear resistance and corrosion resistance, and the hypophosphite itself is oxidized into phosphite. Due to the poor stability of the electroless nickel plating solution, it will be aged and scrapped after about 3-9 cycles, resulting in waste electroless nickel plating solution. The composition of the electroless nickel plating waste solution is complex, mainly containing 3-20g / L nickel ion (ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06C02F101/10
CPCC02F1/463C02F1/5245C02F1/56C02F2001/46142C02F2001/46133C02F2101/105
Inventor 董璨周梦思郑赢忠张丽芳
Owner 深圳瑞赛环保科技有限公司
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