Efficient phosphorus removal composite filler and preparation method thereof

A composite filler, high-efficiency technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. problems, to achieve excellent hydrophilicity and biocompatibility, conducive to film hanging, high porosity

Active Publication Date: 2021-07-23
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

Biological phosphorus removal has problems such as unstable treatment effect and phosphorus release from sludge. The phosphorus removal effect is easily affected by environmental BOD / TP ratio, temperature, pH value, dissolved oxygen and other factors.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The present embodiment prepares the efficient dephosphorization composite filler for sewage treatment, takes PVA as main component, adds 20-200 purpose dephosphorization agent particles, forms by foaming, cross-linking, curing, and concrete preparation method comprises the following steps:

[0025] Step 1. Stir and dissolve 100 parts of polyvinyl alcohol 1788 in 400 parts of 95°C water to form a stable solution.

[0026] Step 2: The chemical dephosphorization agent, aluminum sulfate, is bonded and molded with polyvinyl alcohol aqueous solution, put into an oven and dried at 105° C., and then pulverized to obtain dephosphorization agent particles with a particle size of 20-200 mesh.

[0027] Step 3: Add 20 parts of phosphorus removal agent particles, 2 parts of catalyst sulfuric acid, 1 part of surfactant OP-10, 6 parts of crosslinking agent formaldehyde and 0.1 part of sodium bicarbonate into 100 parts of polyvinyl alcohol aqueous solution, and stir at 2000rpm After soa...

Embodiment 2

[0031] The present embodiment prepares the efficient dephosphorization composite filler for sewage treatment, takes PVA as main component, adds 20-200 purpose dephosphorization agent particles, forms by foaming, cross-linking, curing, and concrete preparation method comprises the following steps:

[0032] Step 1. Stir and dissolve 100 parts of polyvinyl alcohol 1799 in 400 parts of 95°C water to form a stable solution.

[0033] Step 2: The chemical dephosphorization agent ferric sulfate is bonded and molded with polyvinyl alcohol aqueous solution, put into an oven and dried at 105°C, and then pulverized to obtain dephosphorization agent particles with a particle size of 20-200 mesh.

[0034] Step 3, add 40 parts of phosphorus removal agent particles, 4 parts of catalyst sulfuric acid, 2 parts of surfactant sodium dodecylbenzene sulfonate, 9 parts of crosslinking agent formaldehyde and 0.5 part of sodium bicarbonate in 100 parts of polyvinyl alcohol aqueous solution , 1500rpm h...

Embodiment 3

[0038] The present embodiment prepares the efficient dephosphorization composite filler for sewage treatment, takes PVA as main component, adds 20-200 purpose dephosphorization agent particles, forms by foaming, cross-linking, curing, and concrete preparation method comprises the following steps:

[0039] Step 1. Stir and dissolve 100 parts of polyvinyl alcohol 2088 in 1150 parts of 95°C water to form a stable solution.

[0040] Step 2. The chemical phosphorus removal agent ferrous sulfate is bonded and formed with polyvinyl alcohol aqueous solution, put into an oven and dried at 105°C, and then pulverized to obtain phosphorus removal agent particles with a particle size of 20-200 mesh.

[0041] Step 3: Add 50 parts of phosphorus removal agent particles, 6 parts of catalyst sulfuric acid, 2 parts of surfactant Tween-80, 3 parts of crosslinking agent formaldehyde and 1 part of sodium bicarbonate into 100 parts of polyvinyl alcohol aqueous solution, and stir at 1200 rpm After fo...

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Abstract

The invention discloses an efficient dephosphorization composite filler and a preparation method thereof, and the preparation method comprises the following steps: step 1, stirring and dissolving polyvinyl alcohol in water at 95 DEG C to form a stable solution; step 2, bonding and forming a chemical phosphorus removal agent by using a polyvinyl alcohol aqueous solution, drying in a drying oven at 105 DEG C, and crushing to obtain phosphorus removal agent particles with the particle size of 20-200 meshes; step 3, adding phosphorus removal agent particles, a catalyst, a surfactant, a cross-linking agent and sodium bicarbonate into the polyvinyl alcohol aqueous solution, stirring at a high speed, foaming for 2 minutes, pouring into a mold, and preserving heat at 65 DEG C, curing and shaping; and step 4, demolding, cleaning, drying, and cutting into blocks with corresponding sizes according to needs to obtain the phosphorus removal composite filler. The preparation process is simple, and the filler is stable in chemical property, easy to form a film, large in porosity, high in mechanical strength, excellent in adsorption efficiency and adsorption capacity and excellent in phosphorus removal performance.

Description

technical field [0001] The invention belongs to the field of sewage treatment and relates to a sewage treatment material, in particular to a high-efficiency phosphorus removal composite filler and a preparation method thereof. Background technique [0002] With the development of my country's industry and agriculture and the improvement of people's living standards, the discharge of urban sewage has increased rapidly, and untreated sewage has been discharged into lakes and rivers, causing nitrogen and phosphorus pollution in water bodies to become increasingly serious, and the direct consequence is eutrophication of water bodies. Water eutrophication has always been a serious environmental problem in water pollution, posing a great threat to human health and the ecological environment. It is very difficult to remove nutrients such as nitrogen and phosphorus in water bodies. Up to now, no single biological, chemical and physical measures can completely remove nitrogen and pho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/10C02F101/10
CPCC02F9/00C02F3/105C02F3/108C02F2101/105Y02W10/10
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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