Method for promoting lawn absorb heavy metal from consumer garbage compost and increasing photosynthesis amount cooperated with angleworm

Abstract

The invention relates to a method for restoring heavy metal from waste compost by an earthworm in synergism with turf grass, and enhancing photosynthetic amount. A container is provided with an air vent at the bottom, and lined with a layer of gauze; 2 to 4kg of municipal solid waste compost sieved through an over 20-mesh sieve is filled into the container, and 40 to 80 earthworms are also put into the container; 1.5 to 3g of turf grass is scattered on the surface of a compost substrate of the container, and grows at the indoor temperature of 15 to 21 DEG C and 34 to 30 percent of relative humidity; the appropriate amount of water is sprinkled for watering the turf grass every day, so as to maintain 60 to 65 percent of substrate water capacity; the turf grass is mowed 45 days later, so as to mensurate corresponding index content. The method can enhance the transfer of the heavy metal from the underground part of the turf grass to the ground part, thereby increasing the content of the chlorophyll of the turf grass and the photosynthetic amount; furthermore, the method is favorable for promoting the absorption and the concentration of the turf grass to the heavy metal.

Description

technical field [0001] The invention belongs to the technical field of urban environmental protection, and relates to a method for repairing heavy metals in composting domestic garbage and increasing photosynthesis by earthworms and lawn grasses. Background technique [0002] At present, with the rapid development of the economy and the continuous improvement of people's living standards, municipal solid waste is increasing at a rate of 8%. Garbage has become a thorny problem in the development of urban society. It not only causes public hazards to society and the environment, but also causes a huge waste of resources. Nowadays, with people's increasing awareness of environmental protection and deepening understanding of sustainable development issues, more and more people have accepted that municipal solid waste treatment should take the road of resource utilization, reduction and harmlessness. The problem of domestic waste disposal in China is urgent. In addition to simp...

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Problems solved by technology

Then, it is of great significance to study the remediation technology of heavy metal compound pollution caused by earthworm composting of municipal solid waste. So far, there are no relevant literature research reports on how to use earthworms to cooperate with turfgrass to repair heavy metals in domestic waste compost and increase photosynthetic amount.

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