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Compound phosphorus removing agent for phosphorus wastewater and application method of compound phosphorus removing agent

A compound dephosphorization agent and application method technology, applied in the field of sewage treatment in environmental protection, can solve the problems of few industrial applications, and achieve the effect of simple operation and low operating cost

Active Publication Date: 2014-03-12
浙江一清环保工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are relatively many studies on phosphorus removal by adsorption, but there are few industrial applications. The main reason is that there are few high-quality adsorbents suitable for phosphorus removal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A composite dephosphorization agent for phosphorus-containing wastewater, the composite dephosphorization agent comprising the following components in mass percentage: 50% polyferric chloride, 20% calcium chloride, 20% bentonite, and 10% sodium ferrate .

[0028] Add 1000-2000mg / l compound phosphorus removal agent to the pesticide glyphosate phosphorus-containing wastewater with a phosphorus concentration of 300mg / l. The stirring time is 25min. The residual phosphorus content in the effluent wastewater is ≤0.5mg / l, reaching National first-level emission standards.

Embodiment 2

[0030] A composite dephosphorization agent for phosphorus-containing wastewater, the composite dephosphorization agent comprising the following components in mass percentage: 30% iron sulfate, 40% calcium chloride, 10% diatomite, 10% kaolin, high iron Potassium acid 10%.

[0031] Add 800-1500mg / l compound phosphorus removal agent to the food starch phosphorus-containing wastewater with a phosphorus concentration of 100-250mg / l, and the stirring time is 30min. The residual phosphorus content in the effluent wastewater is ≤0.5mg / l, reaching National first-level emission standards.

Embodiment 3

[0033] A composite dephosphorization agent for phosphorus-containing wastewater, the composite dephosphorization agent comprising the following components in mass percentage: 40% ferric chloride, 25% calcium sulfate, 20% calcite, and 15% sodium hypochlorite.

[0034] In domestic phosphorus-containing wastewater with a phosphorus concentration of 10-40mg / l, add a compound phosphorus removal agent of 60-300mg / l, and stir for 20 minutes. Tier 1 emission standard.

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PUM

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Abstract

The invention relates to a compound phosphorus removing agent for phosphorus wastewater and an application method of the compound phosphorus removing agent. The compound phosphorus removing agent comprises the following components by mass: 10-50 percent of ferric salt, 10-40 percent of calcium salt, 5-40 percent of a mineral material, and 5-20 percent of a strong oxidant. The compound phosphorus removing agent is suitable for wastewater which can be either inorganic phosphorus wastewater or organic phosphorus wastewater. Through the combination of the physical method and the chemical method, phosphorus in the inorganic phosphorus wastewater or organic phosphorus wastewater can be removed effectively. The compound phosphorus removing agent and the application method have the advantages that the operation is simple and efficient, the operation cost is relatively low, and the secondary pollution is avoided.

Description

technical field [0001] The invention belongs to the field of sewage treatment in environmental protection, and in particular relates to a compound phosphorus removal agent for phosphorus-containing wastewater and an application method thereof. Background technique [0002] In natural water and wastewater, phosphorus mainly exists in the form of various phosphates, but due to the different sources of wastewater, there are low-priced inorganic phosphorus such as phosphite and hypophosphite discharged in industrial wastewater. [0003] Organic phosphonic acid contains C-P bond, that is, contains hydrocarbyl-phosphorus covalent bond. This bond is very strong and is not easy to break in general reactions. When naming this type of compound, "phosphine" is used instead of "phosphorus" in Chinese. This type of compound is widely used and can be used as raw materials for catalysts, scale inhibitors, mesoporous, luminescent materials, etc. Therefore, organic phosphonic acid widely ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/58
Inventor 吴昊黄进刚任松杰项海陈建军
Owner 浙江一清环保工程有限公司
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