JP2009061438A - Manufacturing method of recycling mixed soil - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of recycling mixed soil capable of obtaining 100% recycling soil which requires no new development for replenishing and dissolving resource insufficiency of earth suited as soil for outdoor facilities such as ground, various kinds of athletic facilities and public garden ground and for planting earth brought from another place, and for suppressing the global warming problem. <P>SOLUTION: By the manufacturing method of recycling mixed soil, the 100% recycling soil which uses only molten slag consisting of clean water sludge dewatered cake in a purification plant and general domestic garbage etc. in facilities of a clean center or the like is manufactured. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

TECHNICAL FIELD The present invention relates to a method for producing a recycled mixed soil suitable for a ground using clean water sludge and molten slag to promote recycling of resources, various sports facilities, outdoor facilities in park squares, and soil for planting customers. It is.

Water sludge is used to treat pollutants in reservoirs and river water from water purification plants using flocculants, purify the water, and supply tap water, but the sludge containing flocculants generated in this process Say that.
The sediment after collecting the supernatant liquid containing the flocculant from this sludge is neutralized with alkali and then sludge dehydrated.
This dewatered sludge is called dehydrated cake.

Molten slag is a solidified glass that is produced by melting incineration ash of garbage at a high temperature of 1200 ^L or more, and is currently being used effectively as civil engineering and construction materials.
It has properties similar to rocks and sand, and is also used as a substitute for sand.

Although there are products and manufacturing methods (Patent Document 1) that are used as a manufacturing method using groundwater sludge and ground pavement materials, the soil is not a sludge but a mixture of the required amount, washed sand and pure sand soil. And always need new resources.
However, it has become difficult year by year to secure high-quality soil to be mixed for commercialization in various places.
In addition, it is necessary to prevent global warming by suppressing overdevelopment in the environment and promoting recycling of existing resources.
JP 2002-69444 A

For this reason, the following occurred.
(B) Since there was no supplier of high-quality soil and the operation was carried out on ordinary soil, it was difficult to produce a high-quality product, and no substitute was found.
(B) In addition to the small number of development sites that can supply high-quality soil resources, the need for more collection sites will result in environmental destruction, including global warming.
(C) Recycling is also necessary to protect resources. The present invention has been made to solve the above problems.

  Using water sludge from a conventional water treatment plant is effective as an environmental measure for recycling, but always requires other resources such as sand. By using molten slag made of household waste instead of this resource, it is possible to stabilize demand and commercialize high-quality soil without destroying the environment. It is characterized by mixing the raw water sludge dewatered cake generated and the waste generated from facilities such as clean centers and industrial wastes into molten slag using a plant, machine, etc., and adjusting the particle size Manufacture recycled soil.

By using molten slag composed of water sludge dewatered cakes and garbage from each prefecture, it is almost 100% recycled.
At present, there are still many cases where such waste is used for land reclamation, the capacity of the landfill is eased, and the waste can be processed in the municipality where it is generated. Can contribute to society.
In addition, the product cost can be reduced by 20% or more compared to the conventional recycled soil.

(B) Adjust the granularity according to the specification application.
(B) The maximum particle size of the soil used for the ground or park square is 10 mm. 5 mm or less is desirable.
(C) Large particles with a particle size of 10 mm or more are used for landscaping.
(D) Set the mixing ratio of dehydrated cake and slag according to the purpose of the product.
(E) For ground and park plaza, 40% to 60% molten slag is mixed in the dewatered cake so that the hardness required by the user is obtained.
(F) When high hardness is required at a stadium or a park, 30% to 50% molten slag is mixed.
(G) About 40% of molten slag is mixed in the case of planting soil.
(H) Mix and knead as mixed in the plant and machine.
(L) Product completion.

Since it can be used for all types of soil, it can also be used for public facilities.
School playground, various competition facilities, land for landscaping, etc.
It can be used as a recycling product for the current athletic field, and it can be used after adjusting the blending with the product.
Since it can be used as a surface layer material such as ground, it is possible to digest a considerable amount of generated waste because of its large area, and it is also highly possible to make a treatment plan easily.

Claims (1)

Mixing and adjusting the particle size of plants, machinery, etc., from molten slag made from water sludge dewatering cake generated from water purification plants in each city and garbage from households and industrial waste generated from facilities such as clean centers Recycled soil manufacturing method characterized by