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Phosphorus recovery method and phosphorus recovery system

A technology for phosphorus recovery and phosphorus compounds, which can be used in separation devices, chemical instruments and methods, phosphorus compounds, etc., and can solve problems such as longer processing time.

Inactive Publication Date: 2009-09-23
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In the acid-alkali elution method, the treatment time becomes longer, so the equipment becomes large-scale, and a treatment facility for incineration ash residue, acid and alkali is required

Method used

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  • Phosphorus recovery method and phosphorus recovery system
  • Phosphorus recovery method and phosphorus recovery system
  • Phosphorus recovery method and phosphorus recovery system

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Embodiment Construction

[0020] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0021] First, the phosphorus recovery device will be described.

[0022] figure 1 It is a schematic structural diagram of the phosphorus recovery apparatus in an Example. This phosphorus recovery device 30 includes adsorption towers 2A and 2B filled with phosphorus compound adsorbent 1, a chemical solution tank 3 for desorption, a chemical solution tank 4 for component replenishment, a phosphorus precipitation device 5, and a chemical solution tank for phosphorus precipitation. 6. Solid-liquid separation device 7, phosphorus recovery tank 8, phosphorus concentration meter 14, stirring devices 15, 16, pumps 9-13.

[0023] In order to enable the continuous operation of the phosphorus recovery device 30, a plurality of adsorption towers 2A and 2B (two in the example of the drawing) are provided. The phosphorus compound adsorption material 1 is filled in these adsorpti...

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Abstract

A phosphorus recovery method and a phosphorus recovery system which can make equipment size small, and can be added easily also to an existing wastewater treatment facility, and can recover phosphorus by low cost, are provided. A phosphorus compound adsorption material includes a nitrogen containing compound which has an amino group at an end of molecular structure, a carrier supporting the nitrogen containing compound, and zinc ion or iron ion fixed to the nitrogen containing compound. After passing water to be treated containing phosphorus to an adsorption tower filled up with this phosphorus compound adsorption material to make phosphorus stick to the phosphorus compound adsorption material, a drug solution for desorption is supplied to the adsorption tower, and phosphorus is desorbed in liquid and is recovered.

Description

[0001] This application is based on and claims the priority of Japanese Patent Application No. 2008-071384 filed on March 19, 2008, the entire contents of which are incorporated herein. technical field [0002] The present invention relates to a phosphorus recovery method and a phosphorus recovery device for recovering phosphorus contained in treated water using phosphorus-containing wastewater from sewage treatment plants, industrial wastewater treatment plants, livestock wastewater treatment plants, rivers, lakes, etc., as treated water. Background technique [0003] Phosphorus, which accounts for about 1% of human body weight, is an element that constitutes DNA (deoxyribonucleic acid) that is the main body of genetic genes, ATP (adenosine triphosphate) required for energy metabolism, and hydroxyapatite that is the main substance of bones and teeth. Phosphorus is an essential mineral for human beings to maintain life activities. [0004] Phosphorus is taken from phosphate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/00C02F1/28
CPCC02F1/285B01J20/3219B01J2220/606B01J20/0229C02F2101/105B01J20/3265C02F1/28B01J20/3236C02F2303/16B01J20/3204B01J20/0244B01J20/34B01J20/345B01J20/3433Y10S210/906B01J20/3475C02F1/58
Inventor 仕入英武足利伸行原口智早见德介河野龙兴铃木昭子藤枝新悦山本胜也
Owner KK TOSHIBA
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