Method for extracting heavy metals from domestic waste compost by using otc strengthened turfgrass

A technology of domestic waste and heavy metals, applied in the restoration of polluted soil, etc.

Inactive Publication Date: 2018-04-06
重庆惟粮品农业开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the systematic interaction between organic agents such as antibiotics and insecticides and the combined pollution of lawns and composting substrates.

Method used

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  • Method for extracting heavy metals from domestic waste compost by using otc strengthened turfgrass
  • Method for extracting heavy metals from domestic waste compost by using otc strengthened turfgrass
  • Method for extracting heavy metals from domestic waste compost by using otc strengthened turfgrass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] The method of extracting heavy metals from domestic waste compost by using OTC strengthened turfgrass:

[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 composted after air-drying and passed through a 2mm sieve; inside each PVC pipe Sprinkle 0.3g of tall fescue seeds soaked 24 hours in advance, water all the 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, indoor The temperature and relative humidity are 16°C, 36%, and the light intensity is 450

[0060] (2) After 30 days of normal culture, add 40ml of OTC 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 a...

Embodiment 2

[0063] Adopt the method for OTC strengthening turfgrass to extract the heavy metal of domestic garbage composting, it is characterized in that carry out according to following steps:

[0064] (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 composted after air-drying and passed through a 2mm sieve; inside each PVC pipe Sprinkle 0.3g of tall fescue seeds soaked 24 hours in advance, water all the 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, indoor The temperature and relative humidity are 22°C, 36-57%, and the light intensity is 700

[0065] (2) After 30 days of normal culture, add 40ml of OTC aqueous solution with a ratio of 10mmol / kg and 20mmol / kg to the compost matrix of the lawn planting system, and reserve ...

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Abstract

The invention discloses a method for extracting house refuse compost heavy metal by employing OTC for reinforcing turfgrass. The method is characterized in that an organic medicine such as OTC is added in a lawn compost matrix for observing the influence of the organic medicine on biomass of heavy metal on plant ground, enrichment condition of heavy metal in compost on overground and underground of the plant, and heavy metal content in a solution. The usage amount of the OTC aqueous solution is 10mmol / kg and 20mmol / kg, and the method can provide technical support for heavy metal pollution restoration by OTC.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and relates to a method for extracting heavy metals from domestic garbage composting by adopting OTC strengthened lawn grass. 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 Patents(China)
IPC IPC(8): B09C1/02B09C1/08
Inventor 赵树兰多立安齐帅
Owner 重庆惟粮品农业开发有限公司
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