ZG FS 821, which is a polymer with an active group of rare earth elements on the styrene-diethylenebenzene gel skeleton and treated with surface thermal oxidation treatment

Description

1. Product Description:Zhengguang’s ZG FS 821 is a special resin, a polymer with an active rare earth group on a styrene-diethylenebenzene backbone gel structure and treated with thermal oxidation. This chemical structure helps form a stable complex with fluoride and arsenate ions in water, removing and reducing fluoride and arsenate concentrations in water, thereby meeting national drinking water standards, i.e., arsenic 10 micrograms/liter and fluorine 1 mg/liter. The product can also be used to purify and recycle fluoride and arsenic in wastewater.

ZG FS 821 resin exhibits high adsorption capacity for fluoride acids and arsenate ions, with a faster adsorption coefficient. Fluoride and arsenate removal is high, and the fluorine and arsenate content in the solution fully complies with the standard. An ion-exchange column eluting with sodium hydroxide, followed by the use of a 5~10% sulfuric acid solution to adjust the pH to 4~6, allows for re-adsorption of the substance, allowing for reuse.

2. Physicochemical indicators:

Parameter name	Unit of measurement
Surface	White or light yellow globular particles
Functional group	Zr-CeO(OH) ₂
Humidity %	45,0~55,0
Adsorption capacity, g/l-P	2.0~3.0
Optical density g/ml	0,65~0,75
True density g/ml	1,06~1,15
Granule size %	（0.315~1.25 mm） ≥ 95.0
Minimum particle size %	（<0.315 mm） ≤ 1.0
Percentage of whole shares	≥ 95,0
Solubility	Insoluble in water, acids, alkalis and common solvents

3. Recommendations for use:

Parameter name	Recommended value
Resin layer height in mm	≥ 600
Flushing coefficient %	50~80
Throughput in BV/h	5~15
Applicability of pH range	3.0~9.0
Operating temperature ℃	≤ 60

4. Operation diagram:

Operation	Solution	Flow rate (BV/h)	Dosage (BV)
Backwash	Branch water	2.0~4.0	1,5~2,0
Recovery	4～5% NaOH	1.0~2.0	1.0~2.0
Slow wash	Desalinated water	1.0~2.0	1.0~2.0
Quick wash	Desalinated water	2.0~3.0	4.0~5.0
Transformation	3~5% sulfate	1.0~2.0</p

ZG FS 821, which is a polymer with an active group of rare earth elements on the styrene-diethylenebenzene gel skeleton and treated with surface thermal oxidation treatment

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