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Nucleation agglomeration induced granulation water treatment device for synchronously removing high-valence ions and organic matters

A water treatment device and organic matter technology, applied in the direction of flocculation/sedimentation water/sewage treatment, water/sewage treatment, oxidized water/sewage treatment, etc., can solve the problem of efficient removal of difficult organic matter, which cannot be directly applied in rural areas, and the content of disinfection by-products advanced questions

Active Publication Date: 2020-07-31
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, limited by objective conditions such as site, capital, technical level and operation, it is not suitable for rural areas, small towns, small industrial enterprises and temporary occasions, and it is difficult to achieve efficient removal of organic matter by chemical precipitation and traditional coagulation processes, even after Subsequent disinfection treatment, drinking water may still have the problem of excessive disinfection by-products
Therefore, the traditional drinking water treatment process cannot be directly applied in rural areas, and it is urgent to develop new technologies for drinking water safety in rural areas

Method used

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  • Nucleation agglomeration induced granulation water treatment device for synchronously removing high-valence ions and organic matters
  • Nucleation agglomeration induced granulation water treatment device for synchronously removing high-valence ions and organic matters
  • Nucleation agglomeration induced granulation water treatment device for synchronously removing high-valence ions and organic matters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The dosage of ozone is 5mg / L, the hydraulic retention time of the pre-oxidation tank is 10min, the dosage of coagulant is 80mg / L, the dosage of coagulant aid is 2mg / L, and the dosage of alkaline substances and nucleating agents is The volume is 2000mg / L, the flow rate is 10m 3 / h.

[0037] UV before raw water treatment 254 0.146cm -1 、COD Mn The total hardness is 5.75mg / L, and the total hardness is 470mg / L. After three weeks of stable operation, the UV 254 0.062cm -1 、COD Mn The total hardness is 2.4mg / L, the total hardness is 85mg / L, and the finally formed densified granules have a particle size of 250-300μm.

Embodiment 2

[0039] The dosage of ozone is 6mg / L, the hydraulic retention time of the pre-oxidation tank is 12min, the dosage of coagulant is 90mg / L, the dosage of coagulant aid is 2.5mg / L, and the dosage of alkaline substances and nucleating agents The dosage is 3000mg / L, the flow rate is 15m 3 / h.

[0040] UV before raw water treatment 254 0.156cm -1 、COD Mn The total hardness is 6.12mg / L, and the total hardness is 385mg / L. After a month of stable operation, the UV 254 0.072cm -1 、COD Mn The total hardness is 2.5mg / L, the total hardness is 75mg / L, and the final densified granules have a particle size of 280-300μm.

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Abstract

The invention relates to the technical field of water quality purification, and provides a nucleation agglomeration induced granulation water treatment device for synchronously removing high-valence ions and organic matters. The water treatment device comprises a pre-oxidation tank, a coagulation reaction tank and a granulation sedimentation tank which are sequentially communicated, the coagulation reaction tank is assisted by a coagulant, so that the organic matters are in a micro-destabilization state; an alkaline substance and a nucleating agent are used as auxiliary materials, so that high-valence metal ions are in an ionic crystal state; then the water enters the lower part of the granulation sedimentation tank, under the action of a coagulant aid; the nucleating agent is preferentially combined with ionic crystal to form a crystal nucleus center; micro-destabilized organic matters are gathered outside the crystal nucleus center in a one-by-one attachment mode to form a densifiedgranulation body; in the process that water flows from bottom to top, the density of a granulation body is increased from bottom to top, then the granulation body with the large density is deposited at the bottom of the granulation sedimentation tank, the nucleation condensation induced granulation process is completed, and finally water with high-valence metal ions and organic matter synchronously removed is discharged from a water outlet.

Description

technical field [0001] The invention belongs to the technical field of water quality purification, and in particular relates to a nucleate coagulation-induced granulation water treatment device for synchronously removing high-valent ions and organic matter. Background technique [0002] The hardness of water reflects the total content of high-valent metal ions in water to a certain extent, and is an important factor reflecting the chemical characteristics of groundwater. High hardness water will have adverse effects on human health and industrial and agricultural development. At the same time, with the acceleration of the industrialization process, the content of organic matter in water is gradually increasing, and many kinds of toxic organic matter will cause "three causes" problems to the human body-mutagenic, carcinogenic and teratogenic. [0003] The chemical precipitation method is currently the most commonly used hard removal technology, but due to the small scale of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F101/30
CPCC02F1/78C02F1/5245C02F1/56C02F1/5281C02F2101/30
Inventor 金鹏康李尧金鑫张悦辛浩然
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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