ES2933285A1 - Biological purification procedure for liquid waste with a high polluting load and/or high toxicity, especially slurry and vegetable water in the containment pond itself (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Biological purification procedure for liquid waste with a high polluting load and/or high toxicity, especially slurry and vegetable water in the containment pond itself, based on a bacterial mixture in an amount adapted to the volume of the discharge to be treated according to a proportion of 0.004%, consistent in 80% of bacteria called Bacillus with 20% of enzymes, which are added to the discharge to be treated, in successive and predetermined amounts, at also predetermined intervals followed by the corresponding interval of agitation and intermittent rest in order to reduce its pollutant load, its bad odors and making it possible to reuse the resulting liquid stream as farm water or fertilizer on the farm itself where it is generated. (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

Biological purification procedure for liquid waste with a high polluting load and/or high toxicity, especially slurry and vegetable water in the containment pond itself

OBJECT OF THE INVENTION

The present descriptive memory refers to an application for an Invention Patent consisting of a purification procedure to be applied in the facilities where the discharges themselves are generated, consisting of a biological treatment based on adding a mixture of bacteria, with which to digest and reduce organic matter and nutrients, via methane, found in untreated discharges, in water or accumulated in fluvial sediments.

The field of application of the present invention is within the techniques for treating the spillage of vegetable water or slurry deposited in a containment pond, using a mixture or "pool" of bacteria for this purpose.

BACKGROUND OF THE INVENTION

By way of background, in the environment of the agri-food industry linked to the cultivation of the olive tree, the alpechín is a dark, black liquid, which has a very unpleasant odor. Specifically, it is the mixture of the water that is used to wash the olives and the water that the olives themselves have, its composition being approximately 83% water, around 15% organic matter and finally, on 1% minerals.

Among its main characteristics we highlight the following:

• His PH has a low value that is at number 5.

• It has a high level of sugars.

• Among the minerals we highlight both phosphorus and magnesium and nitrogen. For this reason, it is a product with a high contaminant load that has to be purified or treated so that it can later be dumped into the public channel or reused.

Likewise, everyone in the primary sector knows the concept of slurry referring to any residue of organic origin, such as wastewater and remains of vegetables, crops, seeds, concentrations of dead animals, fishing, food, excrement. solid or liquid, or a mixture of them, with the ability to ferment or fermented that have an environmental impact.

In addition, the discharge of excess manure gives rise to serious contamination of the soil, surface and sub-alve water, causing serious environmental problems in areas with a high concentration of livestock where waste with a high load of organic and nitrogen pollutants is generated.

In both cases, both in the case of vegetable water waste and slurry, the usual treatment is its transport by an authorized manager to a controlled pond where it is dumped. In it, over time, the evaporation of the liquid will take place, remaining the concentrate throughout the useful life of the pond until its closure under the conditions authorized by the competent administration.

Considering the inventions present in the state of the art, identified by publication number and title, respectively;

• WO1997047561A1, "Biological procedure for the purification of liquid waste with a high contaminant load and/or high toxicity, especially slurry and vegetable water" where a purification station is proposed with other installation costs, limitation in terms of the discharge flow to be treated, transportation from the pond to the plant, requirement for a homogenization pond, use of chemicals, as well as obtaining a final liquid that is not reusable.

• EP0718397A2 "Procedure for the purification and development of liquid and solid waste produced by oil mills" where a first phase of separation of solid waste by means of ultrasound and centrifugation is proposed, which is why it totally differs from the proposed invention from which it is possible to reuse the alperujo conducting the extracted and concentrated residues accumulated to rafts where they are stored.

• WO2005108309A1 "Biological treatment applicable to bacterial bioremediation in aquatic ecosystems and urban and industrial discharges, for adequate digestion of organic matter and nutrients" where a methodological procedure is proposed to create an ideal bacterial pool for each liquid to be treated, without addressing specifically the treatment of vegetable water and slurry.

• “WO2006056620A1 ”Purinox, machine for slurry purification and industrial processes”, for a specific application only for slurry discharges, using a compact unit that separates the liquid from the solid and then treats it with ozone.

Based on the background and the problems described, the "Biological procedure for the purification of liquid waste with a high polluting load and/or high toxicity, especially slurry and vegetable water in the containment pond itself", based on using the aforementioned containment pond Conceived to retain the aforementioned discharges, to carry out the corresponding biological treatment, it provides the following advantages;

^ Elimination of polluting load and reuse of the resulting water on the farms where they were generated.

^ Model on a circular economy by providing treated water with properties such as fertilizer, both in the case of slurry and vegetable water, and even in the case of slurry as water for use in flushing and cooling facilities, or irrigation of crops, saving on the consumption of a commodity as scarce and appreciated as water.

^ Savings in wastewater treatment based on the following aspects;

^ No costs for transporting the effluent to the conventional treatment plant are added.

• The construction costs of the treatment plant itself are not required for this purpose. • Reduction in the consumption of chemical products with a high environmental impact. • Less surface area is required in evaporation ponds.

• Less risk of uncontrolled spillage.

• Less consumption of water and/or fertilizer on farms.

^ Then it is a completely functional proposal, distributed in generation, natural and sustainable based on completely affordable installation costs and in line with the orientation of the new European regulations on the matter.

^ Reduction of bad odors and spread of viruses, a fundamental aspect when it comes to farms close to urban settlements.

^ Additionally, in the case of slurry, microorganisms are incorporated into the solid waste, turning it into an enriched and complete fertilizer.

EXPLANATION OF THE INVENTION

By way of explanation of the invention, the "Biological process for purifying liquid waste with a high contaminating load and/or high toxicity, especially slurry and vegetable water in the containment pond itself" consisting of unfolding the following phases;

A. Obtaining a mixture of bacteria, consisting of a combination of 80% bacteria called Bacillus with 20% enzymes, in a total volume of bacterial mixture depending on the volume of discharge to be treated up to a proportion that is approximately 0.004 % in volume, adjustable depending on the ambient temperature, and the contaminant load itself.

B. Half of the bacterial mixture obtained in the previous phase is added to the discharge to be treated, favoring its dilution by stirring for a continuous hour followed by an hour at rest until completing the first 24 hours.

C. After five days, another 10% is added and at an interval of another five additional days, the addition is repeated until the four remaining 10% are completed, taking into account that, in each complementary addition, stirring must be maintained for the first 24 hours as described in the previous section.

Finally, it is important to clarify how, in relation to the procedure described, in the case of its application on discharges derived from slurry, it is necessary to previously apply a process of filtering and separation of solid substances, the resulting liquid current being the one that is the object of the process. debug.

PREFERRED EMBODIMENT EXAMPLE

Below are illustrative examples of the invention that are presented for a better understanding of the same and that, in no case, should be considered a limitation of its scope.

To this end, the bacterial mixture that we apply to the rafts is made up of 80% of different bacteria of the so-called aerobic, anaerobic and facultative Bacillus, as well as as by enzymes in order that they can solubilize those elements that are impossible to decompose.

To do this, 0.004 liters of the aforementioned mixture of bacteria are applied for each liter of product to be treated, contained in the accumulation or evaporation pond arranged on the farms themselves, so that the toxic products they contain evaporate with the time, as its direct discharge into the environment is prohibited due to its high degree of contamination.

Treatment of discharges derived from vegetable water

In order for the bacteria and enzymes that make up the bacterial mixture to be in an optimal environment, given the complication of both liquids, they are subjected to alternate aeration-aeration agitation, making the aerobic bacteria work while we aerate and the anaerobic bacteria when there is a lack of oxygen. By removing the liquid from the ponds, we managed to eliminate the accumulated sludge, leaving only liquid for later reuse on the farm itself.

Thus, the solid residues of the vegetable water are being eliminated, being able to undertake the application of the fertilizer both foliarly and by irrigation, without damaging the dosing and impulsion equipment. For them, heavy materials have been eliminated and phenols, so harmful to crops, have been reduced to levels allowed by the legislation itself in this regard. Likewise, with the addition of microorganisms, it is easier for the soil to assimilate the macros, micros, and trace elements that are so important for its proper development.

To this end, a 100% natural liquid is obtained once treated that can be reused on the ground, taking advantage of its properties as an ecological fertilizer.

Analytical once the bacterial mixture has acted;

Aluminum 3.12 mg/l PNT.08.34

Ammonium 1.91 mg/l PNT.08.30

Antimony < 10 |jg/l ICP-MS

Arsenic < 10 jg/l ICP-MS

Sulfur 4.32 mg/l Spec. UV-Vis

Beryllium < 0.01 mg/l PNT.08.01

Bismuth < 0.01 mg/l SOP.08.01

Boron 13.9 mg/l Spec. UV-Vis

Cadmium < 10 jg/l PNT 08.01

Calcium 49.3 mg/l EAA (PNT.08.01)

Cobalt < 0.01 mg/l PNT.08.01

Copper 36.5 mg/l EAA (PNT.08.01)

Chromium < 10 jg /l PNT.08.01

Strontium < 0.01 mg/l SOP.08.01

Phenols 2.36 mg/l Spec. UV-Vis

Total dissolved phosphorus 25.6 mg/l PNT.08.73

Dissolved iron 13.6 mg/l EAA (PNT.08.01)

Lithium < 0.01 mg/l SOP.08.01

Magnesium 42.6 mg/l EAA (PNT.08.01)

Manganese 59.7 |jg/l EAA (PNT.08.01)

Organic matter 3.91% according to the method proposed by Walkley and Black

Molybdenum < 0.01 mg/l ICP-OES

Total nitrogen 1.58% PNT.08.30

Nickel < 10 jg /l ICP-MS

Lead < 10 jg /l ICP-MS

Potassium 8.33 mg/l EEA (PNT.08.01)

Rubidium < 0.01 mg/l SOP.08.01

Selenium < 10 jg/l ICP-MS

Sodium 64.1 mg/l EEA (PNT.08.01)

Thallium < 0.01 mg/l SOP.08.01

Titanium < 0.01 mg/l PNT.08.01

Vanadium < 0.01 mg/l SOP.08.01

Zinc 69.4 mg/l EAA (PNT.08.01

In the case of vegetable water, the dosage is not constant over time, since once it has been transformed into fertilizer, the best thing to do is to stop bacterial activity while maintaining its optimal properties for use as such.

Specifically, since the alpechín is generated when the olive is harvested, while the most convenient way would be to obtain the fertilizer close to its use, the applicable sequence as an example of embodiment would be applied to a treatment pond once it is full, during with a complete duration of approximately 37 days of treatment depending on the analyzes that are obtained, and throughout which periods of aeration are interspersed by shaking for one hour followed by others at rest for the same duration interspersed and continues throughout the treatment, following the following sequence:

1. Prior to the incorporation of the bacteria mixture, 7 days of aeration in order to homogenize the product from the raft and incorporate oxygen into the mixture.

2. On day number 8 from the beginning of the treatment, we dose 50% of the bacterial mixture in order to gradually reduce the contaminants in the pond and gradually acquire the ideal conditions for the bacterial mixture to act on successive days. .

3. It is left to work for 5 days.

4. On the 13th day from the beginning of the treatment, we dose 10% of the mixture of bacteria.

5. On the 14th day from the beginning of the treatment, we dose 10% of the mixture of bacteria.

6. On the 15th day from the beginning of the treatment, we dose 10% of the mixture of bacteria.

7. On the 16th day from the beginning of the treatment, we dose 10% of the mixture of bacteria.

8. On the 17th day from the beginning of the treatment, we dose 10% of the mixture of bacteria.

9. Once 100% of the bacterial Pool has been applied, we let the bacteria work for about 20 days to obtain the desired product.

Once the treatment is finished, the aeration is stopped so that the bacteria and enzymes stop their activity, making the characteristics of the resulting liquid stable over time, waiting for it to be applied on the ground when appropriate, with the idea of that said resulting product maintains its properties over time until its application on the ground as fertilizer

Finally, once all the product retained in the work basin has been extracted, it can be refilled to start the purification cycle again.

Then, for the specific case of water treatment, the investment is minimal since the pond already exists, eliminating the problem of waste generation, the restrictions regarding the necessary evaporation surface and the savings regarding the cost of alternative fertilizer that is estimated, it is reduced by 99%.

Treatment of slurry spills

In the case of slurry and according to the needs of the farm, equipment can be incorporated to separate the solids from the liquids and press them, thus extracting a fertilizer with optimized properties, by incorporating a large number of microorganisms into its abundant organic matter. To do this, the existing pond is divided into two, a first where the liquid resulting from natural activity is stored and on which the corresponding agitation must be carried out, to which a second storage area for the liquid by-product is added. no longer remains of organic matter available so that it can be treated and reused in the aeration of the pigsty, flushing and cleaning. With this, it will be possible to reuse the water contained in the slurry by adjusting the pollutant load, eliminating its nitrates, nitrites, the total nitrogen that harms the earth, as well as its PH, BOD and COD as well as the elimination of viruses and larvae that are so harmful to animals.

Analysis once the organic matter has been extracted according to the LC/LQ METHOD

DBOT, manometric method 13910 mg Oo/l FQ/01125

COD, uv-vis spectrophotometry 20125 mg Oo/l FQ/01025

Nitrates, uv-vis spectrophotometry 5680 mg NOóa/l FQ/023.5.0

Nitrites, uv-vis spectrophotometry 3,000 mg NOoa/l FQ/0310,033

Kjeldahl Nitrogen, volumetric titration 6050.0 mg N/l FQ/0325.0

Analytical once the bacterial mixture has acted according to the LC/LQ METHOD

DBOT, manometric method 5015 mg Oo/l FQ/01125

COD, uv-vis spectrophotometry 7148 mg Oo/l FQ/01025

Nitrates, uv-vis spectrophotometry 900.0 mg NOóa/l FQ/023.5.0

Nitrites, uv-vis spectrophotometry 1,250 mg NOoa/l FQ/0310,033

Kjeldahl Nitrogen, volumetric titration 291.0 mg N/l FQ/0325.0

In the case of slurry, the treatment practice is carried out constantly and continuously throughout the year, given that the generation is continuous every day of the year, when flushing liquid waste is generated, which once purged, they can be reused for the next day's activity.

K Regarding the investment, in this case it is required to make the minimum division of the raft, and mount the solids separator, from which a quick return on investment is obtained based on the following circumstances;

K The capacity of the farm can be expanded, increasing the number of heads of cattle, regardless of the area associated with the farm.

K Uncontrolled dumping or management costs associated with delivery to authorized managers are avoided.

K Lower water consumption of special interest in the summer season where there is a limit allocation.

K Economic value of the fertilizer obtained for sale or reuse on the farm itself.

Having sufficiently described the nature of the invention, as well as the way to put it into practice, it is noted that everything that does not alter, change or modify its fundamental principle, may be subject to variations in detail, understanding that the concentration parameters of contaminants of The starting point of the water to be treated can be very varied, without thereby leaving the scope of protection of the inventive concept.

Claims (1)

1. Biological procedure for the purification of liquid waste with a high polluting load and/or high toxicity, especially slurry and vegetable water in the containment pond itself based on deploying the following phases; A. Obtaining a bacterial mixture, consisting of a combination of 80% bacteria called Bacillus with 20% enzymes, with a total volume of bacterial mixture depending on the volume of discharge to be treated up to a proportion that is approximately 0.004%. in volume, adjustable depending on the ambient temperature, and the contaminant load itself. B. Half of the bacterial mixture obtained in the previous phase is added to the discharge to be treated, favoring its dilution by stirring for a continuous hour followed by an hour at rest until completing the first 24 hours. C. After five days, another 10% is added and at an interval of another five additional days, the addition is repeated until the four remaining 10% are completed, taking into account that, in each complementary addition, stirring must be maintained for the first 24 hours as described in the previous phase where the mixture of bacteria is added for the first time.