JPH0696157B2 - Muddy waste treatment agent and treatment method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a treating agent and a treating method for sludge-like waste that can easily solidify sludge-like waste such as paint and sludge.

(Prior Art) For example, a mud containing a pigment or a synthetic resin component such as paint waste, or an organic mud containing water such as manure discharged from a sewage treatment plant or a livestock farm. Etc., the processing method has been a problem from the past.

In the case of the above-mentioned paint, what is solidified by natural drying,
Often, they are simply discarded in landfills or incinerated. In particular, when spray coating oil-based paints or water-based paints, a method is adopted in which mist-like paint particles that do not adhere to the painted surface and float in the atmosphere are sprayed with water and collected. Since the paint collected at this time is a mud containing a large amount of water, use a centrifuge or sedimentation tank to separate and remove the water in the mud to some extent, and then mix sawdust and rice husks. Had been incinerated.

In addition, the muddy substance discharged from the sewage is often discarded as it is and naturally dried, or the water is removed and incinerated in many cases.

(Problems to be solved by the invention) However, as described above, when the mud-like waste is naturally dried as it is, there is a limit to the stacking height, so a vast disposal site is required, and it is necessary to dry it. Since harmful gas and odor are generated in the area, it is necessary to secure a disposal place away from the house.

Further, when incinerating mud-like waste, harmful gas and odor are still generated, so that the incineration site is limited and the incinerator becomes expensive.

In addition, when it is transported to a disposal site or an incinerator, since it is in a liquid state, it has to be packed in a container such as a drum and transported, and the transportation work and the disposal work are complicated.

(Means for Solving the Problem) In order to solve the problem, the treatment agent for the mud-like waste according to claim 1 is a powder or a grit of quick lime (CaO) containing pineapple enzyme extracted from pineapple juice. It is characterized by being mixed or adhered.

Further, the treating agent for sludge-like waste according to claim 2 is claim 1
In the treating agent for the muddy waste described in (1), the powder or the granules of the porous adsorbent such as zeolite or activated carbon is further mixed or attached.

Further, the method for treating muddy waste according to claim 3, wherein the lime waste (CaO) powder or grit and pineapple enzyme extracted from pineapple juice are mixed into the muddy waste. It is characterized by solidifying.

The method for treating mud-like waste according to claim 4 is the same as the method for treating mud-like waste according to claim 3, further comprising the step of discarding powder or muddy particles of a porous adsorbent such as zeolite or activated carbon. It is characterized in that the mud-like waste is solidified by being mixed with a substance.

The "pineapple enzyme" referred to here is a liquid or powdery substance obtained by squeezing out pineapple juice and concentrating or drying the enzyme in the active state. Its main components are the following types of enzymes. The object in parentheses is the object of action.

Alcohol dehydrogenase (alcohol) Lactate dehydrogenase (lactose) Glucose 6-phosphate dehydrogenase (carbohydrate) Aldehyde dehydrogenase (aldehyde) L-aspartate-beta-semialdehyde-NADP oxidrectase ( Aldehyde Glutamate dehydrogenase (amino acid) Aspartate semialdehyde dehydrogenase (amino acid) NADPH ₂ Chictochrome C Reactase (NADP) Glutathione dehydrogenase (glutathione) Trehalose phosphate synthetase (carbohydrate) ) Polyphosphaed Kinase (ATP) Ethanolamine Phosphate Cytidyl Transferase (CTP) Trehalose Phosphatase (Carbohydrate) Metalthio Phospho Glycerate Phosphater Ze (glycerin) inulase (inulin) β-mannositase (carbohydrate) uridine nucleositase (amino acid) cytosine diaminase (cytosine) methylcysteine synthetase (amino acid) aspartate synthetase (ATP) succinate dehydrogenase (succinate) aconitine Acid hydrolase (citrate) Fumarate hydrolase (malonate) Maleate dehydrogenase (malonate) Citrate synthetase (acetyl CouA) Isocitrate dehydrogenase (citrate) LSNADP oxidase (citrate) Monoamine Oxidactase (amine) Histaminase (amine) Pyruvate decarboxylase (oxo acid) ATPase (ATP) Nucleotide pyrophosphatase (nucleic acid) Endopolyphosphatase (ATP) AT P Phosphohydrolase (ATP) Orotidine pentaphosphate decarboxylase (orotidine) and other enzymes (action) The treatment agent for sludge-like waste according to the present invention is used by mixing it in sludge-like waste. Quick lime (Ca
O) reacts with water to generate heat, and slaked lime (Ca
It changes to (OH) ₂ ) and solidifies.

Further, since the pineapple enzyme extracted from the pineapple juice contained in the treatment agent of the present invention has the above-mentioned various types of enzymes as the main components, the synthetic resin component, sugar, protein, fat, etc. contained in the mud-like waste. Decomposes high molecular weight organic compounds into small molecule organic compounds and inorganic compounds. For this reason, the muddy waste becomes small molecules and is easily trapped in the slaked lime molecules, and the muddy waste solidifies in a state of being mixed with the slaked lime as the quicklime solidifies.

The protein is heated by the heat of solidification of the quicklime or is solidified by the acid generated during the decomposition by the degrading enzyme. Similarly, the solidification of mud-like waste can be promoted by the enzyme components in the treatment agent of the present invention or heat and components generated after the treatment agent is added, such as saponification of lipids by the slaked lime aqueous solution.

If only quick lime is added and mixed into the sludge-like waste, the quick lime becomes slaked lime and solidifies independently, so that only the high molecular weight organic compound and slaked lime are separated, and It cannot be solidified.

Furthermore, by the heat generated when the quicklime is solidified,
The effect of accelerating the activation of the pineapple enzyme and increasing the decomposition rate of the polymer organic compound can be obtained.

Further, the treatment agent of the present invention is a homogeneous mixture of pineapple enzyme extracted from pineapple juice, which can be mixed in the mud-like waste in a short time because it is a powder or a grit of lime premixed or attached. A solid waste material can be produced.

Further, the treatment agent as described above, by admixing or adhering powder or granules of a porous adsorbent such as zeolite or activated carbon, harmful gas or odor generated from mud-like waste (at room temperature, when heating, (Those that occur at each time of disassembly)
However, they are adsorbed by the porous adsorbent and are solidified together in a state of being taken into the solidified slaked lime. As a result, the mud-like waste containing the treatment agent of the present invention is changed to an odorless solid substance.

Further, the method for treating mud-like waste according to the present invention, in addition to the method of introducing and mixing the treating agent in the mud-like waste, the quicklime powder or granules and the pineapple enzyme are introduced separately. It may be a method of mixing.

It is also effective to first add and mix the pineapple enzyme extracted from the pineapple juice, and then mix and mix quicklime after the decomposition reaction has progressed to some extent.

The porous adsorbent may be mixed at an appropriate time.

Further, the pineapple enzyme contains the above-mentioned various kinds of enzymes, and can be easily obtained by only squeezing the pineapple juice, so that each degrading enzyme can be artificially synthesized or extracted separately. It is cheaper to manufacture than

As the pineapple enzyme, one that retains its activity is used, and it may be in a liquid form, a dry powder form, or a granular form.

(Example) Hereinafter, one example of the present invention will be described.

In the present Example, as the pineapple enzyme extracted from the pineapple juice in the claims, the pineapple juice squeezed from the pineapple fruit was dehydrated and concentrated at room temperature, and then produced by freeze-drying to produce a powder of active pineapple enzyme. used. Then, this was mixed with quick lime powder, and then activated carbon powder was further mixed and processed into a granule form, which was used as a treatment agent according to the present invention.

The object to be treated is the above-mentioned water-based paint recovery liquid.

By adding an approximately equal amount of the treating agent into the recovery liquid of the water-based paint and stirring and mixing, heat generation starts and solidification of quick lime progresses, and the entire recovery liquid is a homogeneous solid substance. Became. At this time, almost no harmful gas or odor was generated, and the work was easy. Further, when the solid matter after solidification was cut and the cut surface was observed, the synthetic resin component and the pigment component contained in the water-based paint were in a state of being uniformly captured in the solidified slaked lime.

(Effects of the Invention) As described in detail above, the present invention provides
It can be solidified with simple work and at low work cost.

Further, by mixing the porous adsorbent, generation of harmful gas or odor can be suppressed.

Therefore, it becomes easy to secure the disposal site. Further, the conventional disposal work was a complicated work such as packing and transporting the mud-like waste in a drum, but according to the present invention, the solid matter after solidification can be directly loaded on a truck or the like. It is possible to simplify and speed up the disposal work.

Then, the solid matter after solidification can be put into the combustion chamber as it is and incinerated, and the quicklime component produced at the time of combustion can also be recovered.

In addition, if this solid material is formed into a block shape so that it can be piled up, since its main component is slaked lime, it has excellent strength, weather resistance, and fire resistance. Therefore, the muddy waste is molded and solidified into an appropriate shape according to the present invention,
A solid material after solidification such as processing into a building material or a tile for laying can be used in many fields as well as simply discarded.

Claims (4)

[Claims] 1. A treatment agent for sludge-like waste, characterized by mixing or adhering pineapple enzyme extracted from pineapple juice to a powder or a grit of quicklime (CaO). 2. The treating agent for sludge-like waste according to claim 1, further comprising a powder or a granule of a porous adsorbent such as zeolite or activated carbon mixed or adhered thereto. 3. A mud-like waste characterized by solidifying the mud-like waste by mixing quick-lime (CaO) powder or granules and pineapple enzyme extracted from pineapple juice with the mud-like waste. How to dispose of things. 4. The mud waste according to claim 3, further comprising solidifying the mud waste by mixing powder or granules of a porous adsorbent such as zeolite or activated carbon into the mud waste. Waste disposal method.