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A phosphorus removal agent containing inorganic minerals and its application method

A technology of inorganic minerals and phosphorus removal agent, applied in the field of water treatment research, can solve the problem of low phosphorus removal rate, and achieve the effect of good phosphorus removal effect, simple preparation and easy availability of raw materials

Active Publication Date: 2016-01-20
SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many studies on the removal of inorganic phosphorus, but there are few studies on the removal rate of phosphorus in organic phosphine chemicals.

Method used

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  • A phosphorus removal agent containing inorganic minerals and its application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Taking 2000mg of inorganic mineral phosphorus removal agent as an example, it is made by fully mixing 1400mg of polyaluminum chloride (PAC), 400mg of bentonite, and 200mg of ferrous sulfate, of which polyaluminum chloride (PAC) accounts for 70% of the total mass , bentonite accounted for 20%, ferrous sulfate accounted for 10%.

[0031] The dephosphorization agent is dissolved in water according to the mass concentration of 2%, and mixed before each use.

[0032] Take 1L of the sewage quality of the simulated circulating water system prepared above, add the above-mentioned inorganic mineral phosphorus removal agent according to the dosage in Table 2, stir for 1min, and stand at room temperature for 30min, then take the supernatant and use molybdate colorimetry The method was used for analysis, and the analysis results were all expressed as PO 4 3- For the results, see Table 2.

[0033] Table 2 is the water quality analysis result after adding phosphorus removal agent ...

Embodiment 2

[0037] Taking 2000mg of inorganic mineral phosphorus removal agent as an example, it is made by fully mixing 1200mg of polyaluminum chloride (PAC), 500mg of bentonite, and 300mg of ferrous sulfate, of which polyaluminum chloride (PAC) accounts for 60% of the total mass , bentonite accounted for 25%, ferrous sulfate accounted for 15%.

[0038] The dephosphorization agent is dissolved in water according to the mass concentration of 2%, and mixed before each use.

[0039] Take 1L of the sewage quality of the simulated circulating water system prepared above, add the above-mentioned inorganic mineral phosphorus removal agent according to the dosage in Table 3, stir for 1min, and let stand at room temperature for 30min, then take the supernatant and use molybdate colorimetry The method was used for analysis, and the analysis results were all expressed as PO 4 3- See Table 3 for the results.

[0040] Table 3 is the analysis result of sewage quality after adding phosphorus removal...

Embodiment 3

[0044] Taking 2000mg of inorganic mineral phosphorus removal agent as an example, it is made by fully mixing 1200mg of polyaluminum chloride (PAC), 600mg of diatomaceous earth, and 200mg of ferrous sulfate, of which polyaluminum chloride (PAC) accounts for 60%, diatomaceous earth accounts for 30%, and ferrous sulfate accounts for 10%.

[0045] The dephosphorization agent is dissolved in water according to the mass concentration of 2%, and mixed before each use.

[0046] Take 1L of the sewage quality of the simulated circulating water system prepared above, add the above-mentioned inorganic mineral phosphorus removal agent according to the dosage in Table 4, stir for 1min, and stand at room temperature for 30min, then take the supernatant and use molybdate colorimetry The method was used for analysis, and the analysis results were all expressed as PO4 3- See Table 4 for the results.

[0047] Table 4 shows the results of sewage quality analysis after adding phosphorus removal ...

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Abstract

The invention relates to a phosphorus removing agent containing inorganic mineral and an application method thereof. The phosphorus removing agent contains 50-75% of an aluminium-containing compound, 15-30% of an inorganic mineral adsorbent and 10-20% of an iron-containing compound, and also can be compounded with a B component. By the use of the phosphorus removing agent, inorganic phosphorus and organic phosphorus in wastewater are removed effectively. By the addition of the inorganic mineral adsorbent, phosphates are fully adsorbed, and the inorganic mineral adsorbent can be combined with iron hydroxide and dried aluminium hydroxide gel generated during the reaction. Thus, more phosphates and pollutants in water can be adsorbed to form larger floc, and settling and flocculation processes are accelerated. Through the synergistic effect of substances, a better phosphorus removing effect is achieved. The phosphorus removing agent has a very good effect of processing orthophosphate, polyphosphates and organic phosphorus and especially has a function of efficiently removing organic phosphorus. In addition, the application method of the phosphorus removing agent is simple.

Description

technical field [0001] The invention belongs to the technical field of water treatment research, and in particular relates to a phosphorus removal agent containing inorganic minerals and a use method thereof. Background technique [0002] Phosphorus pollution has become an important part of environmental pollution. In natural water bodies and wastewater systems, phosphorus almost exists in the form of various phosphates, which are divided into orthophosphate, polyphosphate (pyrophosphate, metaphosphate and polyphosphates) and organically bound phosphates. [0003] Phosphorus in sewage mainly comes from the detergents used in people's daily life, and the production wastewater discharged from the production process of some factories. These large amounts of wastewater are discharged into rivers, lakes and seas without treatment or under the condition that the treatment is not up to standard, causing pollution to water bodies. The pollution of phosphorus to water bodies is mai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/08
CPCC02F1/281C02F1/5236C02F1/58
Inventor 张国辉杨鸿鹰王丽莉胡静郭一平南粉益高小媛张哲
Owner SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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