CS228284B1 - Method for treatment liguid wastes - Google Patents

Description

The invention relates to a process for the treatment of liquid wastes, viscous, semi-solid or pasty consistency.

The treatment or disposal of liquid wastes or substances of a semi-solid, pasty or viscous consistency is often a difficult, difficult-to-solve problem. Such wastes are generally inconvenient on conventional filtration equipment, so that removal of the liquid phase by the separation technique is practically impractical semi-solid or pasty or viscous consistency is also a problem of handling, especially pumping, loading and transport to suitable storage sites · If the wastes contain biodegradable substances, they also pose a serious environmental problem ·

These are mainly wastes containing mineral oils and other petroleum products, aromatic compounds, tars, pitches, resins, detergents, etc. ·

We have now found a process for treating liquid wastes, viscous, semi-solid or paste-like consistency, which is the object of the present invention, which comprises adding an organic or inorganic substance in the form of pulp, sawdust, fibers, dust or abrasion to this waste. with a moisture content of 1 to 50%, and after mixing at room temperature, the mixture is used as a fuel or additive in ceramic raw materials or compost #

The invention is based on the principle of utilizing the high absorbency of suitably treated organic materials, by means of which the above-mentioned wastes can be converted into loose or semi-bulk materials capable of being handled and transported in conventional transport equipment. based on organic substances, the carbon content can be increased, and thus the combustibility and calorific value of the final px by cLixlc * fc IX ·

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Particularly wood particles from the particle size of the dust to the size of sawdust, i.e. about 0.1 to 5,000 .mu.m, are characterized by a high absorbency if they have a low moisture content, in particular below 10%. Said particles are obtained by milling _from or shredding wood waste, from special equipment designed for this purpose and drying to a high dry matter content, for example 90 to 95 in suitable driers. However, such a high dry matter is not a requirement, but the absorbency effect is lower.

Some of the industrial wastes, such as wood abrasion, ie dust, from woodworking plants, as well as abrasion obtained in the processing and treatment of plastics, eg uraacart, in the grinding of various coatings, particleboard, fiber materials, shives, fine paper pulp, dried tree bark, etc. Inorganic powdery materials are distinguished by high water absorption such as expanded perlite, powdery fraction of ceramic products, etc. Their common feature is the ability to absorb a considerable amount of water, in some cases quadruple.

The waste grafted by the process according to the invention is further efficiently processed and utilized either by incineration in suitable incineration plants, possibly with the addition of other fuels or as an additive to ceramic raw materials, especially brick, to achieve so-called lightening of brick and ceramic products. Burning these products saves fuel.

The following examples illustrate the process of treating a wide variety of liquid wastes, viscous, semi-solid or pasty consistency.

Example 1

Disposal of sludge containing oils and other petroleum products.

These sludges contain as a major part water, soil, oils, lubricants, detergents in the form of a viscous liquid. E.g. sludge in an amount of 3.2 parts wt. are metered into a stirred vessel equipped with a powerful mixing device, to which 1 part wt. (calculated amount taking into account the amount present

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228 284 water in sludge) with a moisture content of less than 10 After the sludge dosing was finished, the mixture was stirred for 10 minutes, after which the loose product was processed by admixing with the brick material to achieve lightening effect. fuels necessary for firing brick products. The resulting free-flowing product after mixing the sludge and wood mass can also be burned directly in suitable incineration plants. mixed with other fuel.

Example 2

Wood sawdust with a moisture content of 5 to 35% was presented in an amount of 1 part by weight. into a stirred vessel equipped with a high performance raider and a calculated amount of viscous waste from the vat dye production, i.e. 5 parts by weight. A wet but free-flowing product was obtained, which was treated analogously to Example 1.

Example 3

Crushing tree bark event. pre-dried to a dry matter content of 60 to 50% was presented in an amount of 1 part wt. to a 4 t / lx product mixer and a calculated amount of sludge, i.e. 3.2 parts by weight, of the biogas plant. Obtained a loose product suitable as an organic fertilizer to improve the structure of the soil fund.

Example 4

Crushed tree bark or sawdust, or other absorbent material with a moisture content of 5 to 35%, was in an amount of 1 part wt. mixed with the waste saturating sugar sludge in a predetermined ratio, ie 5.3 parts by weight. This resulted in a well-handled product suitable as an additive to compost and as a means to improve soil resources.

Example 5

Waste wood abrasion or fine sawdust with a moisture content below 10% in an amount of 1 part by weight. were mixed with the waste sludge formed during the treatment of coal tar in such a proportion (according to the water content of the waste sludge) that a loose product was formed which did not release water, ie 4.6 parts by weight. The resulting product was mixed with brick raw material to achieve the effect of lightening the bricks during firing and saving the fuel (oil) needed to burn brick products by burning organic matter mixed into the ceramic raw material. The resulting product may also be incinerated

-5 directly in other suitable combustion plants.

Example 6 228 284

The pulverized waste from the treatment of UMACART trade name plates, the so-called umakart cloth with a moisture content below 10%, was submitted as a layer of 2 to 40 cm in height to a suitable filter device. The resin-containing waste water in the form of an emulsion or sludge was introduced through this layer. After the resin layer was saturated with resin, it was either regenerated by introducing methanol onto the layer of formica and returned as a methanolic solution to the production, since the resin-saturated formica cloth was blended into the brick raw material to achieve the lighter effect of brick products. by burning organic matter added to the brick material. The product obtained can also be burned directly in a suitable incineration plant. after mixing with other types of fuels.

Example 7

An emulsion of worn and deteriorated cutting fluid containing 2 to 5% emulsifying oil or other oils in an amount of 1.6 parts by weight · is added to 1 part by weight. umakartu or wood base. Stirring gives a well-handled semi-bulk product which is utilized analogously to Example 1.

Example 8

K 1 part wt. of calcium sludge after treatment of the cyanide waste with calcium hypochlorite was added 2.6 parts by weight of fly ash from a thermal power plant captured in the electrofilters in a rotating vessel (automix). After perfect mixing, a loose product was obtained suitable for further handling and use, for example, in brickworks or cement plants.

Claims (1)

Process for the treatment of liquid, waste, viscous, semi-solid or paste-like consistents, characterized in that an organic or inorganic substance in the form of pulp, sawdust, fibers, dust or abrasion with a moisture content of 1 to 50% is added to this waste; Mixing at room temperature the mixture is used as a fuel or additive in ceramic raw materials or composts.