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Method for renovating compost leacheate with Festuca arundinacea and NTA (nitrilotriacetic acid)

A technology of eluent and tall fescue, applied in gardening methods, botanical equipment and methods, applications, etc., can solve problems such as pollution of deep soil and groundwater, pollution, difficult light, chemical substances, and biodegradation, and achieve Solve the effect of reuse and safe discharge, and meet the needs of growth

Inactive Publication Date: 2013-12-25
TIANJIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when using EDTA to coordinate phytoremediation, since EDTA and the complex formed by chelating EDTA and heavy metals have strong solubility and biotoxicity, and are difficult to be degraded by light, chemicals and organisms in soil, it is likely to be Cause environmental problems such as polluting deep soil and groundwater pollution

Method used

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  • Method for renovating compost leacheate with Festuca arundinacea and NTA (nitrilotriacetic acid)
  • Method for renovating compost leacheate with Festuca arundinacea and NTA (nitrilotriacetic acid)
  • Method for renovating compost leacheate with Festuca arundinacea and NTA (nitrilotriacetic acid)

Examples

Experimental program
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Effect test

Embodiment 1

[0081] (1) Experimental materials: perennial tall fescue in northern my country ( Festuca arundinacea L . ) as the test material; the waste compost used in the experiment was taken from Tianjin Xiaodian Compost Plant, and passed through a 2 mm sieve after air-drying for use;

[0082] (2) Test method

[0083] 1) Take 10mmol·kg -1 Composted NTA, added to 1500g garbage compost, soaked in 3000ml tap water for 72h, and then made into 25%, 50%, 75%, 100% compost eluent respectively;

[0084] 2) Soak the tall fescue seeds in the compost eluent, and carry out the test in a petri dish with a diameter of 9.4 cm. A layer of filter paper is placed on the bottom of the petri dish as the culture substrate. During the test, the light intensity is 600 mu mol?m -2 ?s -1 ; Add 15ml of compost eluent every day according to the evaporation, to ensure that the volume of compost eluent added to each petri dish is equal, the average temperature of the environment during the cultivation perio...

Embodiment 2

[0087] (1) Experimental materials: perennial tall fescue in northern my country ( Festuca arundinacea L . ) as the test material; the waste compost used in the experiment was taken from Tianjin Xiaodian Compost Plant, and passed through a 2 mm sieve after air-drying for use;

[0088] (2) Test method

[0089] 1) Take 10mmol·kg -1 Composted NTA, added to 1500g garbage compost, soaked in 3000ml tap water for 72h, and then made into 25%, 50%, 75%, 100% compost eluent respectively;

[0090] 2) Soak the tall fescue seeds in the compost eluent, and carry out the test in a petri dish with a diameter of 9.4 cm. A layer of filter paper is placed on the bottom of the petri dish as the culture substrate. During the test, the light intensity is 800 mu mol?m -2 ?s -1 ;According to the evaporation, add 15ml of compost eluent every day to ensure that the volume of compost eluent added to each petri dish is equal, the average temperature of the environment during the cultivation period...

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Abstract

The invention discloses a method for renovating compost leacheate with Festuca arundinacea and NTA (nitrilotriacetic acid), which includes adding NTA with 10mmol / kg-1 compost into 1500g of refuse compost, using 3000ml of tap water to soak for 72 hours, and making 25-100% compost leacheate; dipping seeds of Festuca arundinacea in a petri dish, measuring plant height after the seeds germinate, and clipping the plants for measuring dry weight of the plants 30 days of water culture; and using an atom absorption spectrophotometer TAS-990 to measure content change of heavy metals, namely Cu, Ni, Zn and Cr. Test results show that refuse compost in domestic refuse compost leacheate for cultivation of soilless turf is provided with additional chelant and contains organic matters, nitrogen, phosphorus and other nutrient elements, and accordingly the requirement of lawn plants on growth can be met sufficiently and reuse and safe discharge of the refuse compost leacheate are achieved.

Description

technical field [0001] The invention belongs to the application of garbage composting in the technical field of urban lawn planting, and relates to a method for repairing heavy metals in compost eluate by using tall fescue and NTA. Background technique [0002] In recent years, the problem of environmental pollution caused by domestic waste has become one of the focuses of widespread concern in society. With the improvement of people's living standards in our country, the amount of municipal solid waste is also increasing. Using domestic garbage compost as a lawn substrate can not only avoid the food chain, but also solve the problem of the way out of garbage. [0003] Lawn plants in gardens and green spaces have the characteristics of fast growth, and they are mostly used for viewing and purifying the environment. If garbage compost is used as the growth substrate of lawn plants, lawn plants will absorb and enrich the heavy metals in it, so as to reduce the pollution of de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G1/00A01G7/00
Inventor 赵树兰多立安贾丽娜
Owner TIANJIN NORMAL UNIVERSITY
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