JPH02160090A - Method and device for treating waste - Google Patents

Abstract

PURPOSE:To prevent the effluence of polluted waste water to rivers by constituting the above method and device of a stage for separating the waste carried into the device to combustible materials non-combustible materials and waste water and a stage for incinerating the combustible materials and evaporating the waste liquid by utilizing the combustion heat thereof. CONSTITUTION:The waste is first carried into a collecting field 1. This waste is then separated to materials 3 which burn, waste oil, etc., 7, and materials 4 which do not burn (e.g.: metals, sludge, glass etc.) in the sepn. stage 2. These materials are respectively stored. The materials 4 which do not burn are carried to a covering treatment field 5 and is subjected to a covering treatment. On the other hand, the materials 3 which burn are carried to an incineration furnace 6 and are incinerated. The cinders are carried to the covering treatment field 5 and are subjected to the covering treatment. The waste oil, etc., 7, the polluted waste water 8a of the covering treatment field 8, and the scrubbing waste water 8 produced after scrubbing of the stack gas of the incineration furnace 6 are introduced into an evaporator 9 attached to the furnace 6 and are subjected to an evaporation treatment by the incineration heat generated from the furnace 6. Further, the cinders discharged from the furnace 6 are carried to the treatment field 5 and are treated. The effluence of the polluted water to the rivers is thus prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention mainly relates to a method and apparatus for treating waste discharged from factories and the like.

(Prior Art) There are various types of waste, and methods for treating them include incineration, soil-covering, filtration for sewage, and chemical treatment.

[Problems with conventional technology]

However, the above processing method has the following problems.

a. In the case of the incineration method, there are problems with smoke exhaust and air pollution due to incineration, and problems with the durability of the incinerator due to the high temperature of the incineration heat.

b. In the case of the piled soil covering method, this method involves repeating alternating cycles of waste and covering soil to form a sandwich, and is typically used for landfills and the like. However, this landfill method contaminates rainwater and groundwater with waste, causing water pollution problems in the sea and rivers.

On the other hand, when there is no landfill, waste is disposed of in the mountains using the soil-covering method as described above.
In this case, too, there is a problem that groundwater and rainwater are contaminated with waste.

c, '$1. In the case of filtration and chemical injection method This filtration and chemical injection method is mainly applied to wastewater treatment.
Treatment facilities require a lot of money and space, and in some places such facilities cannot be built, and there are problems with residual chemicals.

The present invention particularly proposes a novel method for treating contaminated wastewater, rainwater, and the problem of rainwater treatment in soil-covering treatment plants.

[Means for solving problems]

The present invention proposes the following processing method and processing apparatus as a means for solving the above problems.

1. A process of separating recycled waste into combustible and non-combustible waste and waste liquid; A process of incinerating the flammable waste and evaporating the waste liquid using the heat of combustion. How to dispose of waste.

In the above treatment method, the incinerator and evaporator may be of known types. Moreover, the waste water after the flue gas emitted from the incinerator is treated with water is treated together with the waste liquid.

2. At a treatment plant where waste is deposited and treated using the soil covering method by taking advantage of the topography, steps are formed on the ground surface, and rainwater drains are placed around each step, and these rainwater drains are deepened to make the ground surface impermeable. Then, when the surface of the waste and covering soil reaches the rainwater drainage ditch, the rainwater drainage ditch is blocked, and the following steps are repeated in order, and the surface of the waste and covering soil is covered with a waterproof sheet.
A waste treatment device configured so that the rainwater that falls on the tarpaulin sheet flows into the unblocked rainwater drain, and the rainwater collected in the rainwater drain is drained directly into the river. .

[Effect]

In the above device, the rainwater that falls on the waterproof sheet is collected in a rainwater drainage ditch, for example, in a pond, and then directly drained into a river.

〔Example〕

FIG. 1 is a flow sheet of a treatment method according to the present invention, in which waste is first transported to a collection site l.

At the collection site 1, next in the separation process 2, the combustibles 3
For example, wood, paper, plastic, etc., waste oil, etc. 7, and non-flammable items 4, such as metals, sludge, slag, glass, ceramics, etc. are separated and stored respectively.

Next, among the materials separated in the separation step 2, the non-combustible materials 4 are transported to a soil-covering treatment plant 5 and are covered there with soil.

On the other hand, the combustibles 3 are carried to the incinerator 6 and burned there, and the cinders are carried to the soil-covering treatment plant 5 and covered with soil.

Next, the waste oil etc. 7 separated in the separation step 2, the contaminated wastewater 8a of the treatment plant, or the cleaning wastewater 8 that has been washed with the flue gas of the incinerator 6 is led to an evaporator 9 attached to the incinerator 6. , where it is evaporated using incineration heat. The cinders discharged from the incinerator 6 are transported to the soil-covering treatment plant 5 and treated there.

Figure 2 is a cross-sectional view of the soil-covered treatment plant (processing equipment), which is built in the middle of a mountain valley.

10 is a slope, and this slope 10 becomes 7 as it goes down.
Steps 11 are provided at appropriate intervals in a narrow shape, and rainwater drainage ditches 12 are constructed in the steps 11.

The rainwater drain 12 continues to a pond (or storage tank) or the like via a drainage pipe.

Reference numeral 13 denotes a water-shielding sheet as a water-impermeable treatment means stretched over the slope 10 and step 11 excluding the rainwater drainage ditch 12, and this water-shielding sheet 13 prevents rainwater from entering the slope 10.

Reference numeral 14 indicates waste, and 15 indicates covering soil. In the treatment plant 5, the layers of waste 14 and covering soil 15 are deposited alternately, that is, in the form of a sand inch.

A waterproof sheet 16 covers the surface of the covered soil 15 (or the waste 14), and this waterproof sheet 16 prevents rainwater from entering, collects rainwater, and guides it to the rainwater drainage ditch 12.

Rainwater led to the rainwater drain 12 is once stored in a pond or the like, and then directly drained into a river.

17 is a collection pipe buried at the bottom of the treatment plant to collect waste 1.
The wastewater that has passed through 4 is collected in this collection pipe and evaporated.

When the rainwater drainage ditch 12 becomes filled with waste 14 and soil covering 15, it is filled with concrete and blocked, and its function is lost.

[Effects of the present invention] As described above, the present invention utilizes the heat of incineration when incinerating combustible waste to remove waste liquid from waste, rainwater contaminated by waste, waste water that has been washed with flue gas, etc. Since it evaporates, there is no need for filtration equipment as in the past, and it does not pollute rivers, so there is no impact on fisheries.

As a result, processing facilities do not require much expense or space,
There will be no pollution problem.

Next, at the treatment plant, all rainwater is collected using tarpaulins and rainwater drains to prevent it from being contaminated with waste, so it can be discharged into rivers without any treatment, which is much easier than conventional methods. There is no need to install special equipment to treat rainwater contaminated with waste, and treatment costs can be reduced. This is particularly effective in the case of rainwater, which requires a large amount of treatment.

[Brief explanation of the drawing]

FIG. 1 is a flow sheet for explaining the waste treatment method according to the present invention. FIG. 2 is a sectional view of a waste soil-covering treatment plant according to the present invention. 1-・--・Collection site 2--------1 Separation process 3-----1 Burnable items 4-----1 Non-flammable items 5-----Soil covering treatment plant 6--・-・-Incinerator 7 ・-
・-Waste oil, etc. 8-----Washing wastewater 8a----1 Contaminated treatment plant wastewater 9--1 Evaporator 10
---------One slope 11-----Step 12-
・-Rainwater drain 13-----Waterproof sheet 14
-------Waste 15--・- Covering with soil 16--
----- Waterproof sheet 17...--- Water collection pipe

Claims (1)

[Claims] 1. A step of separating imported waste into combustible and non-combustible waste and waste liquid, incinerating the flammable waste and evaporating the waste liquid using the heat of combustion. A waste treatment method comprising the steps of: 2. At a treatment plant where waste is piled up using the soil covering method using topography, steps are formed on the ground surface, and rainwater drains are placed around each step, and the ground surface other than these rainwater drains is treated to be impermeable. Then, when the surface of the waste and covering soil reaches the rainwater drainage ditch, the rainwater drainage ditch is blocked, and this is repeated in sequence, and the surface of the waste and covering soil is covered with a waterproof sheet.
The structure is such that the rainwater that falls on the tarpaulin sheet flows into the unblocked rainwater drain, and the rainwater collected in the rainwater drain is temporarily stored and then directly drained into the river for disposal. Equipment for processing things.