Phosphorus removal agent for sewage treatment and preparation method thereof

A technology of sewage treatment and phosphorus removal agent, which is applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of increasing phosphorus removal cost, small adsorption capacity, and harsh service conditions. , to achieve the effect of improving the adsorption capacity and adsorption rate, fast flocculation and sedimentation speed, and firm flocculation sediment

Active Publication Date: 2021-02-23
神美科技有限公司
View PDF10 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the phosphorus removal agent A can only be used when the pH of the sewage is 7.5-8.5, and the phosphorus removal agent B can only be used when the pH is 6.5-7.5. It is often necessary to adjust the pH of the sewage, and it is also easy to block the pipes, which cannot meet the needs of sewage. Phosphorus removal needs
[0005] CN105502610A discloses a high-efficiency sewage phosphorus removal flocculant, the composition of the high-efficiency sewage phosphorus removal flocculant is: water, 30-40 parts; potassium perchlorate, 4-8 parts; sodium silicate, 20-30 parts; Iron, 25 to 35 parts; a mixture of aluminum sulfate and magnesium sulf

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Phosphorus removal agent for sewage treatment and preparation method thereof
  • Phosphorus removal agent for sewage treatment and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A phosphorus removal agent for sewage treatment, comprising the following raw materials in parts by weight:

[0059] 45-55 parts of ferrous sulfate pentahydrate,

[0060] 12-16 parts of polyaluminum chloride,

[0061] 20-27 parts of polymerized aluminum iron silicate,

[0062] 25-33 parts of hydroxyl iron modified montmorillonite.

[0063] Preferably, the dephosphorization agent for sewage treatment includes the following raw materials in parts by weight:

[0064] 50 parts of ferrous sulfate pentahydrate,

[0065] 14 parts of polyaluminum chloride,

[0066] Polymerized aluminum iron silicate 23.5 parts,

[0067] 29 parts of hydroxyl iron modified montmorillonite.

[0068] Preferably, the preparation method of described hydroxyl iron modified montmorillonite comprises the steps:

[0069] 1) Preparation of hydroxy iron sol:

[0070] 11) dissolving ferric chloride in deionized water to form an aqueous ferric chloride solution;

[0071] 12) adding the sodium hydrox...

Embodiment 2

[0090] A phosphorus removal agent for sewage treatment, comprising the following raw materials in parts by weight:

[0091] 45 parts of ferrous sulfate pentahydrate,

[0092] 12 parts of polyaluminum chloride,

[0093] Polymerized aluminum iron silicate 20 parts,

[0094] Hydroxyl iron modified montmorillonite 25 parts.

[0095] In the present embodiment, the preparation method of the hydroxy iron modified montmorillonite comprises the following steps:

[0096] 1) Preparation of hydroxy iron sol:

[0097] 11) dissolving ferric chloride in deionized water to form an aqueous ferric chloride solution;

[0098] 12) adding the sodium hydroxide aqueous solution dropwise to the ferric chloride aqueous solution, stirring while adding dropwise, after the dropwise addition, continue stirring for 30min to obtain the hydroxyiron sol;

[0099] 2) Preparation of hydroxyl iron modified montmorillonite:

[0100] 21) Stirring and dispersing the montmorillonite in the mixed solvent, feedi...

Embodiment 3

[0117] A phosphorus removal agent for sewage treatment, comprising the following raw materials in parts by weight:

[0118] 55 parts of ferrous sulfate pentahydrate,

[0119] 16 parts of polyaluminum chloride,

[0120] Polymerized aluminum iron silicate 27 parts,

[0121] 33 parts of hydroxyl iron modified montmorillonite.

[0122] In the present embodiment, the preparation method of the hydroxy iron modified montmorillonite comprises the following steps:

[0123] 1) Preparation of hydroxy iron sol:

[0124] 11) dissolving ferric chloride in deionized water to form an aqueous ferric chloride solution;

[0125] 12) adding the sodium hydroxide aqueous solution dropwise to the ferric chloride aqueous solution, stirring while adding dropwise, after the dropwise addition, continue stirring for 50min to obtain the hydroxyiron sol;

[0126] 2) Preparation of hydroxyl iron modified montmorillonite:

[0127] 21) Stirring and dispersing the montmorillonite in the mixed solvent, fe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Granularityaaaaaaaaaa
Granularityaaaaaaaaaa
Granularityaaaaaaaaaa
Login to view more

Abstract

The invention discloses a phosphorus removal agent for sewage treatment. The phosphorus removal agent is prepared from the following raw materials in parts by weight: 45-55 parts of ferrous sulfate pentahydrate, 12-16 parts of polyaluminum chloride, 20-27 parts of polyaluminum ferric silicate and 25-33 parts of hydroxyl iron modified montmorillonite. According to the phosphorus removal agent for sewage treatment, the raw material composition is carefully selected, the content of each raw material is optimized, ferrous sulfate pentahydrate, polyaluminum chloride, polyaluminum ferric silicate and specially-made hydroxyl iron modified montmorillonite in a proper proportion are selected, the advantages of each raw material are fully exerted, mutual complementation and mutual promotion are achieved, the product quality is greatly improved, the prepared phosphorus removal agent for sewage treatment is high in phosphorus removal rate and low in turbidity of treated water, and is an efficientphosphorus removal agent for sewage treatment.

Description

technical field [0001] The invention relates to the field of water treatment reagents, in particular to a phosphorus removal agent for sewage treatment and a preparation method thereof. Background technique [0002] With the rapid development of our country's economy, a large amount of phosphorus-rich sewage is discharged into sensitive water environments such as rivers, lakes, and oceans without treatment or is not up to standard, resulting in eutrophication of water bodies, and even black and odorous water bodies. Phosphorus is the key factor. When the environment When TP≥0.02mg / L in the water body, the water body begins to lack oxygen and presents a state of eutrophication [1-2]. Therefore, industrial and agricultural wastewater and domestic sewage should be denitrified and dephosphorized before being discharged into water bodies. Especially for sensitive areas such as key lakes, important reservoirs, and coastal water catchment areas, a reasonable and appropriate upgrad...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C02F1/28C02F1/52C02F1/58C02F1/62
CPCC02F1/288C02F1/5245C02F1/58C02F1/62
Inventor 石伟杰冯春晖周继柱朱希坤王国瑞孙松厚郑伯英
Owner 神美科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap