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Phosphorus removing agent and preparation method and phosphorus removing method thereof

A technology of phosphorus removal agent and silicon additive, which is applied in the field of sewage treatment and environmental protection engineering, and can solve the problems of secondary pollution and large amount of lime sludge.

Inactive Publication Date: 2009-12-30
上海新豫环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, adding iron salt mainly has problems such as chroma, while adding lime has the problems of large amount of sludge and secondary pollution

Method used

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  • Phosphorus removing agent and preparation method and phosphorus removing method thereof
  • Phosphorus removing agent and preparation method and phosphorus removing method thereof
  • Phosphorus removing agent and preparation method and phosphorus removing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: get the CaCl of 50% (mass percentage, the same below) 2 , 20% AlCl 3 , 10% FeCl 2 , 10% SiO 2 , through the sol-gel reaction, and then the precipitate after the reaction was dried and sieved to obtain the phosphorus removal agent (named LB-1). Take the comprehensive phosphorus-containing wastewater and pickling and phosphating wastewater from a machinery company in Kunshan 100mL each, add 0.3g and 1.5g of LB-1 dephosphorization agent to each of the phosphorus-containing wastewater, add 1.5g of LB-1 dephosphorization agent to the phosphating wastewater, react for 10min, take out and measure Phosphorus content in the wastewater after the reaction is measured by ammonium molybdate spectrophotometry (GB 11893-89), and the specific results are shown in Table 1 below:

[0023] Table 1 Comparison of phosphorus content before and after treatment of phosphorus-containing wastewater

[0024]

Embodiment 2

[0025] Embodiment 2: get 60% Ca (NO 3 ) 2 , 15% Al 2 o 3 , 8% FeSO 4 , 17% SiO 2 , through the sol-gel reaction, and then the precipitate after the reaction was dried and sieved to obtain the LB-1 dephosphorization agent. Take 100 mL of comprehensive phosphorus-containing wastewater and pickling and phosphating wastewater from a Shanghai Machinery Co., Ltd., and put Add 0.3g and 1.3g of LB-1 phosphorus removal agent to each of the phosphorus-containing wastewater, react for 20min, take out and measure the phosphorus content in the wastewater after the reaction, and measure it with ammonium molybdate spectrophotometry (GB 11893-89), specifically The results are shown in Table 2 below:

[0026] Table 2 Comparison of phosphorus content before and after treatment of phosphorus-containing wastewater

[0027]

Embodiment 3

[0028] Embodiment 3: get 80% CaO, 5% AlCl 3 , 5% FeCl 3 , 10% SiO 2 , through the sol-gel reaction, and then the precipitate after the reaction was dried and sieved to obtain the LB-1 dephosphorization agent. Take 100 mL of comprehensive phosphorus-containing wastewater and pickling and phosphating wastewater from a Shanghai Machinery Co., Ltd., and put Add 0.3g and 1.3g of LB-1 phosphorus removal agent to each of the phosphorus-containing wastewater, react for 40min, take out and measure the phosphorus content in the wastewater after the reaction, and measure it with ammonium molybdate spectrophotometry (GB 11893-89), specifically The results are shown in Table 3 below:

[0029] Table 3 Comparison of phosphorus content before and after treatment of phosphorus-containing wastewater

[0030]

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Abstract

The invention relates a phosphorus removing agent and a method for removing inorganic phosphorus from wastewater containing high concentration phosphorus, belonging to the technical field of wastewater treatment and environmental protection engineering. The phosphorus removing agent comprises the following components by weight percent: 50-80% of compound containing calcium, 5-20% of compound containing aluminum, 5-10% of compound containing iron and 10-20% of silicon additive. The invention also provides a preparation method of the phosphorus removing agent and a method for removing phosphorus by using the phosphorus removing agent. By using the phosphorus removing agent of the invention to treat the wastewater containing phosphorus, the phosphorus concentration of the effluent reach the integrated wastewater discharge standard. The phosphorus removing agent of the invention has low cost and good effect, thus having good industrialized application prospects.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment and environmental protection engineering, and in particular relates to a phosphorus removal agent (LB-1) and a preparation method thereof and a method for removing inorganic phosphorus in high-concentration phosphorus-containing wastewater. Background technique [0002] With the increase of human development and utilization of environmental resources and the acceleration of industrial and agricultural production scale, more and more nutrients enter rivers and lakes, resulting in eutrophication of water bodies. From the perspective of the relationship between algae's nitrogen and phosphorus needs in water bodies, phosphorus is the main limiting factor for water eutrophication. The main sources of phosphorus-containing wastewater are: ① According to the form of phosphorus, it can be divided into inorganic phosphorus wastewater (phosphate, polyphosphate) and organic phosphorus wastewater (ph...

Claims

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Application Information

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IPC IPC(8): C02F1/58
Inventor 白红梅刘国勇
Owner 上海新豫环保科技有限公司
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