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Granular humic biological filler and production method and application thereof

A technology of biological filler and production method, which is applied in the direction of granular microbial carrier treatment, sustainable biological treatment, chemical instruments and methods, etc. and other problems to achieve the effect of alleviating blockage, solving negative effects, and high organic matter content

Active Publication Date: 2020-08-14
NANJING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the low mechanical strength of humus in the process of using humus as biological filler in the prior art, it is prone to uneven settlement after contact with water, and with the continuous growth of microorganisms, the biological filler is prone to hardening or even clogging, resulting in Humic biological filler cannot be used normally

Method used

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  • Granular humic biological filler and production method and application thereof
  • Granular humic biological filler and production method and application thereof
  • Granular humic biological filler and production method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] The production method of the granular humic filler of the present embodiment specifically comprises the following steps:

[0043] (1) Utilize multi-stage screening technology and equipment to obtain the humus soil under the sieve of 1~3mm, mix in the disc granulator according to the humus soil of 80% quality and the bentonite (325 orders of particle size) of 20% quality, Use an atomized water nozzle to add an appropriate amount of water to form small particles of 1 to 3 mm.

[0044] (2) Use polyvinyl alcohol powder of model 1799, dissolve it in hot water at 95°C to prepare a glue solution with a mass concentration of 5%, and use a siphon-type two-fluid air-water nozzle to spray the glue solution under the air pressure condition of an air compressor greater than 0.3MPa. Atomized and sprayed onto the small particles in the disc granulator, so that the small particles fully absorb the glue and bond with each other to gradually form large particles and obtain sufficient ini...

Embodiment 2

[0049] The production method of the granular humic filler of the present embodiment specifically comprises the following steps:

[0050] (1) Utilize multistage screening technology and equipment to obtain the humus under the sieve of 1 ~ 3mm, mix in the disc granulator according to the humus of 90% quality and the bentonite (325 orders of particle size) of 10% quality, Use an atomized water nozzle to add an appropriate amount of water to form small particles of 1 to 3 mm.

[0051] (2) Use polyvinyl alcohol powder of model 1799, dissolve it in hot water at 95°C to prepare a glue solution with a mass concentration of 7%; use a siphon type two-fluid air-water nozzle under the air pressure condition of an air compressor greater than 0.3MPa to spray the glue solution Atomized and sprayed onto the small particles in the disc granulator, so that the small particles fully absorb the glue and bond with each other to gradually form large particles and obtain sufficient initial strength....

Embodiment 3

[0055] The production method of the granular humic filler of the present embodiment specifically comprises the following steps:

[0056] (1) Utilize multi-stage screening technology and equipment to obtain the humus under the sieve of 1~3mm, mix in the disc granulator according to the humus of 85% quality and the bentonite (325 orders of particle size) of 15% quality, Use an atomized water nozzle to add an appropriate amount of water to form small particles of 1 to 3 mm.

[0057] (2) Adopt the polyvinyl alcohol powder of model 1799, dissolve with 95 ℃ of hot water and be mixed with the mass concentration and be 10% glue solution; Utilize the siphon type two-fluid air-water nozzle under the condition of air pressure greater than 0.3MPa, the described The glue is atomized and sprayed onto the small particles in the disc granulator, so that the small particles can fully absorb the glue and bond with each other to gradually form large particles and obtain sufficient initial streng...

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Abstract

The invention belongs to the technical field of environmental engineering water treatment, and particularly relates to a granular humic biological filler and a production method and application thereof. The production method comprises the following steps: (1) mixing undersize humus soil and bentonite in a disc granulator according to a certain mass ratio, and adding a proper amount of water by utilizing an atomized water spray head to form mixture particles, (2) adding hot water into polyvinyl alcohol powder to dissolve the polyvinyl alcohol powder to prepare a polyvinyl alcohol glue solution,and (3) spraying the polyvinyl alcohol glue solution to the mixture particles in the disc granulator in an atomizing and spraying manner under a certain air pressure condition, so that the mixture particles fully absorb the polyvinyl alcohol glue solution, and air-drying to obtain the granular humic biological filler. The finally formed humic filler is uniform in particle size, high in mechanicalstrength and good in water resistance, standardization of humic biological filler products is achieved, and a new way for large-scale resource utilization of undersize humus soil is achieved.

Description

technical field [0001] The invention relates to the technical field of environmental engineering water treatment, in particular to a granular humic biological filler, a production method and application. Background technique [0002] my country's informal landfills and sanitary landfills have about 8 billion tons of garbage in stock, occupying a lot of land and polluting the surrounding environment, but the potential resources are huge. Existing garbage mining, sorting and recycling technology (ie "urban mining" technology) is one of the best ways to solve the problem. Humus under the sieve is a kind of sorting product with a relatively high proportion (40-50%), and the safety and economy of its resourceful outlet are very important. At present, it is mainly mixed with ordinary soil as urban greening soil. Although its high organic matter content is beneficial to soil improvement and contains a small amount of nutrients, the mixing of harmful impurities such as broken glass...

Claims

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Application Information

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IPC IPC(8): C02F3/00C02F3/34C02F3/10B01J19/30B01J2/14B01J2/28
CPCC02F3/00C02F3/34C02F3/107C02F3/105B01J19/30B01J2/14B01J2/28C02F2003/001Y02W10/10
Inventor 吴军李志远马海涛吕宜廉朱俊伟杨智力李智罗智峰罗培康
Owner NANJING UNIV
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