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Preparation method of constructed wetland phosphate removing substrate material

A matrix material and constructed wetland technology, applied in chemical instruments and methods, other chemical processes, biological water/sewage treatment, etc., can solve problems such as the lack of phosphorus removal matrix in constructed wetlands, achieve long-term treatment, reduce operating costs, and be economical The effect of the unity of benefits and environmental benefits

Inactive Publication Date: 2017-01-04
ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the existing shortcomings, the present invention discloses a preparation method of a matrix material for dephosphorization of constructed wetlands with readily available raw materials, low cost and excellent performance, which not only makes full use of agricultural waste resources, but also solves the problem of phosphorus removal in existing constructed wetlands Technical problems with lack of matrix

Method used

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  • Preparation method of constructed wetland phosphate removing substrate material
  • Preparation method of constructed wetland phosphate removing substrate material

Examples

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Effect test

Embodiment 1

[0020] A preparation method for a constructed wetland dephosphorization matrix material, comprising the following steps,

[0021] A. Clean the mussel shells, remove the sludge on the surface of the shells and the mussel residues in the shells, and dry them naturally;

[0022] B. the natural air-dried mussel shells are crushed into fragments with a diameter of 30mm;

[0023] C. further pulverize the fragments to obtain the pulverized clam shell fragments;

[0024] D. screening the crushed clam shell fragments to prepare a phosphorus removal matrix material for constructed wetlands.

Embodiment 2

[0026] A preparation method for a constructed wetland dephosphorization matrix material, comprising the following steps,

[0027] A. Wash the clam shells with tap water, remove the sludge on the surface of the clam shells and the clam residues in the clam shells, and dry them naturally;

[0028] B. the natural air-dried mussel shells are crushed into pieces with a diameter of 50mm with a coarse crusher;

[0029] C. be that the high-speed pulverizer of 10000rpm is further pulverized fragment with rotating speed, obtains the mussel shell fragment after pulverizing, pulverizing time is 1 minute;

[0030] D. Screen the crushed clam shell fragments with a 100-mesh sieve to obtain clam shell particles with a particle size of 0.15-0.3 mm.

[0031] The prepared wetland phosphorus removal matrix material volume density is controlled to 1800kg / m 3 .

Embodiment 3

[0033] A preparation method for a constructed wetland dephosphorization matrix material, comprising the following steps,

[0034] A. Clean the mussel shells, remove the sludge on the surface of the shells and the mussel residues in the shells, and dry them naturally;

[0035] B. the clamshell that the natural air-drying is crushed into the fragment that diameter is 35mm;

[0036] C. further pulverize the fragments to obtain the pulverized clam shell fragments;

[0037] D. Screen the crushed mussel shell fragments with a 80-mesh sieve to obtain clam shell particles with a particle size of 0.3-0.45 mm.

[0038] The volume density of the prepared phosphorus removal matrix material for constructed wetlands is controlled to 1700kg / m 3 .

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Abstract

The invention relates to the technical field of a water treatment material, and discloses a preparation method of a constructed wetland phosphate removing substrate material. The method comprises the following steps: cleaning of freshwater mussel shells, natural drying, crushing of mussel shells into fragments, and classified screening. The phosphate removing substrate material is prepared by agricultural wastes, and has the advantages of low cost, easily available raw materials, simple processing, and resource utilization; the material can replace common phosphate removing substrates in constructed wetlands, and simulated constructed wetland tests prove that the phosphate removing substrate can remove phosphor in riverway water bodies and cultivation sewage with high efficiency.

Description

technical field [0001] The invention relates to the technical field of water treatment materials, in particular to a preparation method of a matrix material for phosphorus removal in constructed wetlands. Background technique [0002] Constructed wetland is a new type of wastewater treatment process, which uses the triple synergy of physics, chemistry and biology of the composite ecosystem of substrate-plant-microbe to realize the treatment of sewage through filtration, adsorption, precipitation, ion exchange, plant absorption, and microbial decomposition. efficient purification. The use of constructed wetlands to treat wastewater as a low-investment, low-energy, low-cost wastewater ecological treatment technology has been gradually accepted by countries all over the world. Substrate (also known as filler) is an important component of constructed wetlands, and choosing a suitable substrate can improve the removal effect of nitrogen and phosphorus. [0003] Studies have sho...

Claims

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Application Information

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IPC IPC(8): B01J20/04B01J20/30C02F3/32
Inventor 许育新张棋喻曼陈喜靖肖华沈阿林
Owner ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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