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Application of siduron in reinforcing extraction of municipal refuse compost heavy metal by virtue of turfgrass

A technology for domestic waste and heavy metals, which is applied in the restoration of polluted soil and other directions

Inactive Publication Date: 2015-08-19
TIANJIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still no way to study the technology of herbicides and turf synergistically remediating heavy metal pollution in compost substrates.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] The measurement method is:

[0059] (1) Use PVC pipes Φ=3cm, h=25cm, wrap the lower end of each PVC pipe with gauze, put 10g of sand passed through a 1mm sieve and 190g of domestic waste compost after air-drying and passed through a 2mm sieve; Add 0.3g of tall fescue seeds soaked 24 hours in advance, water all PVC pipes with tap water every morning and evening, adjust the water content by weighing method, make the water content in the compost matrix reach the maximum water holding capacity of 60% and keep it constant, the indoor temperature and relative humidity are 16°C, 36%, light intensity is 450 μmol.m -2 .s -1 ;

[0060] (2) After 30 days of normal culture, add 40ml of Siduron aqueous solution with a ratio of 10mmol / kg and 20mmol / kg to the compost matrix of the lawn planting system, and reserve 1cm after 15 days for mowing; the mowed The aboveground part is placed in an oven at 80°C and dried to a constant weight and weighed;

[0061] (3) On the second day afte...

Embodiment 2

[0064] The measurement method is:

[0065] (1) Use PVC pipes Φ=3cm, h=25cm, wrap the lower end of each PVC pipe with gauze, put 10g of sand passed through a 1mm sieve and 190g of domestic waste compost after air-drying and passed through a 2mm sieve; Add 0.3g of tall fescue seeds soaked 24 hours in advance, water all PVC pipes with tap water every morning and evening, adjust the water content by weighing method, make the water content in the compost matrix reach the maximum water holding capacity of 60% and keep it constant, the indoor temperature and relative humidity are 22°C, 57%, light intensity is 700 μmol.m -2 .s -1 ;

[0066] (2) After 30 days of normal culture, add 40ml of Siduron aqueous solution with a ratio of 10mmol / kg and 20mmol / kg to the compost matrix of the lawn planting system, and reserve 1cm after 15 days for mowing; the mowed The aboveground part is placed in an oven at 80°C and dried to a constant weight and weighed;

[0067] (3) On the second day afte...

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Abstract

The invention discloses an application of siduron in reinforcing extraction of municipal refuse compost heavy metal by virtue of turfgrass. The reinforcement of the extraction of the municipal refuse compost heavy metal by virtue of turfgrass refers to that siduron is added into a turf compost substrate, and then the above-ground biomass of heavy metal of a plant and the gathering situation of heavy metal in compost above and under the plant as well as the affection on the content of heavy metal in a spraying solution are observed. The experiment result shows that by adding 10 to 20 mmol / kg of siduron, the ion activity and the migration ratio of the heavy metal can be obviously improved, after the siduron has coupling reaction with the heavy metal in the compost, the content of the heavy metal in the spraying liquid is increased, and significant importance on repairing the heavy metal in a spraying manner can be realized.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and relates to the application of Siduron in strengthening lawn grass to extract heavy metals from domestic waste composting. Background technique [0002] Household garbage is a general term for the solid waste discharged in the daily life of urban people. Composting technology is mostly used in the treatment of urban household garbage in my country. Municipal solid waste compost contains phosphorus, nitrogen, potassium and organic matter and other nutrients needed for plant growth, and can be used as organic fertilizer in agriculture. The nutrients in the garbage compost can increase the organic matter content of the nutrients by 11.81%-72.12%. Studies have shown that the application of domestic waste compost can significantly increase the yield of Chinese cabbage. The study found that using domestic waste compost as a substrate to plant tea trees increased production by abou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/08
Inventor 多立安赵树兰齐帅
Owner TIANJIN NORMAL UNIVERSITY
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