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Efficient nitrogen and phosphorus removal porous filler and preparation method thereof

A technology for denitrification and phosphorus removal, porous fillers, applied in chemical instruments and methods, other chemical processes, silicates, etc. Specific surface area, beneficial to the effect of film hanging

Pending Publication Date: 2021-09-03
华设设计集团环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used adsorbents include activated carbon, some natural minerals, and some industrial waste, etc. Although the solid adsorption method has the advantages of small footprint, simple process, convenient operation, and low treatment cost, its saturated adsorption capacity is low, and there are dissolution losses and Defects such as poor anti-interference are still the main reasons affecting the large-scale application of solid adsorption methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This implementation prepares porous fillers for efficient nitrogen and phosphorus removal for sewage treatment, with polyvinyl alcohol condensate as the main component, adding activated pretreated phosphorus removal adsorbent, and foaming and cross-linking solidification. The specific preparation method includes the following steps :

[0030] Step 1. After immersing the zeolite in a mixed solution of magnesium chloride (50wt%) and aluminum chloride (50wt%) for 24 hours, dry and pulverize it into phosphorus-removing adsorbent particles with a particle size of 20-200 mesh.

[0031] Step 2: Add 100 parts of polyvinyl alcohol 1788 into 400 parts of water, raise the temperature to 90-99° C. and stir to dissolve to form a stable solution.

[0032] Step 3: Add 100 parts of phosphorus removal adsorbent particles, 9 parts of sulfuric acid, 10 parts of sodium dodecylbenzenesulfonate, 16 parts of formaldehyde and 2 parts of sodium bicarbonate into 100 parts of polyvinyl alcohol aq...

Embodiment 2

[0035] This implementation prepares porous fillers for efficient nitrogen and phosphorus removal for sewage treatment, with polyvinyl alcohol condensate as the main component, adding activated pretreated phosphorus removal adsorbent, and foaming and cross-linking solidification. The specific preparation method includes the following steps :

[0036] Step 1. After immersing the activated carbon in the mixed solution of magnesium chloride (50wt%) and aluminum chloride (50wt%) for 24 hours, dry and pulverize it into phosphorus removal adsorbent particles with a particle size of 20-200 mesh.

[0037] Step 2: Add 100 parts of polyvinyl alcohol 1799 to 600 parts of water, raise the temperature to 90-99° C. and stir to dissolve to form a stable solution.

[0038] Step 3: Add 120 parts of phosphorus-removing adsorbent particles, 12 parts of sulfuric acid, 10 parts of AEO20, 12 parts of formaldehyde and 2 parts of sodium bicarbonate into 100 parts of polyvinyl alcohol aqueous solution,...

Embodiment 3

[0041] This implementation prepares porous fillers for efficient nitrogen and phosphorus removal for sewage treatment, with polyvinyl alcohol condensate as the main component, adding activated pretreated phosphorus removal adsorbent, and foaming and cross-linking solidification. The specific preparation method includes the following steps :

[0042] Step 1. After soaking the bentonite in the mixed solution of magnesium chloride (50wt%) and aluminum chloride (50wt%) for 24 hours, dry and pulverize it into phosphorus-removing adsorbent particles with a particle size of 20-200 mesh.

[0043] Step 2: Add 100 parts of polyvinyl alcohol 2088 to 700 parts of water, raise the temperature to 90-99° C. and stir to dissolve to form a stable solution.

[0044] Step 3: Add 80 parts of phosphorus-removing adsorbent particles, 15 parts of sulfuric acid, 15 parts of sodium dodecylsulfonate, 20 parts of formaldehyde and 1 part of sodium bicarbonate into 100 parts of polyvinyl alcohol aqueous s...

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Abstract

The invention discloses an efficient nitrogen and phosphorus removal porous filler and a preparation method thereof, and belongs to the technical field of sewage treatment auxiliary materials. The porous filler provided by the invention is prepared by taking polyvinyl alcohol as a main component, adding a phosphorus removal adsorbent subjected to activation pretreatment, and performing foaming, crosslinking and curing, and specifically the preparation method comprises the following steps: step a, soaking the phosphorus removal adsorbent in a magnesium and aluminum compound solution, performing drying treatment, and crushing into adsorbent particles; step b, adding polyvinyl alcohol into water, heating and stirring to prepare a polyvinyl alcohol solution; c, sequentially adding the phosphorus removal adsorbent particles, a catalyst, a surfactant, a cross-linking agent and a foaming agent into the polyvinyl alcohol solution, stirring and foaming, pouring into a mold, and carrying out heat preservation, curing and shaping; and d, demolding, cleaning, drying, and cutting into blocks with corresponding sizes according to needs. The preparation method disclosed by the invention is simple in process and has an ideal removal effect on nitrogen and phosphorus.

Description

technical field [0001] The invention relates to a high-efficiency denitrification and phosphorus removal porous filler and a preparation method thereof, in particular to a suspension filler capable of efficiently adsorbing nitrogen and phosphorus elements in water bodies and a preparation method thereof, belonging to the technical field of auxiliary materials for sewage treatment. Background technique [0002] With the rapid development of society and the continuous improvement of people's work and living quality, the water pollution situation has become increasingly worrying, which has posed a serious threat to the sustainable development of society. A large amount of urban sewage, industrial wastewater and agricultural water enter the natural waters, resulting in the enrichment of elements such as nitrogen and phosphorus, causing the rapid reproduction of algae, resulting in a decrease in the transparency of the water body, a decrease in dissolved oxygen, and in severe case...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00C02F3/34B01J20/28B01J20/10B01J20/02B01J20/04B01J20/12B01J20/14B01J20/16B01J20/20B01J20/30C02F1/28
CPCC02F3/00C02F3/34B01J20/28042B01J20/10B01J20/027B01J20/12B01J20/04B01J20/02B01J20/14B01J20/20B01J20/165C02F2003/001C02F1/28C02F1/281C02F1/283
Inventor 黎鹏王霞曹亚丽殷承启王玉红张玮徐文文
Owner 华设设计集团环境科技有限公司
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