Liquid purification or separation – Processes – Treatment by living organism
Patent
1993-07-27
1995-11-28
Upton, Christopher
Liquid purification or separation
Processes
Treatment by living organism
210666, 210667, 210728, 210764, 210916, C02F 168
Patent
active
054704766
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
My invention relates to a method for the treatment of animal waste.
The treatment carried out with the method concerning this patent is finalized to the neutralization of the free ammonia and also to the partial deodorization of the sewage and lowering of the respective PH to favour the activity of the responsible microbes of the seasoning process of the sewage.
In livestock farms, prior art it is known that the tank for the collection of sewage is realized by a grid floor under the animals.
If this solution provides a lot of advantages, of practicality in use, work and cleanliness of the farm, and also easy conveyance and downflow of the animal excrements through respective and progressive incorporation into the underlying sewage basins separated by said grill, it creates pollution and toxic problems both for the operators and animals obliged to breathe the sewage exhalations.
To obviate said problems aeration systems have been supplied and in particular under grid aspiration systems of the toxic vapors, while the fresh air immission is supplied by under roof openings.
These solutions do not solve however the problem of the pollution of the surrounding atmospheric environment, consequently progressive sewage treatment systems have been experimented, in order to contain the noxious exhalations and to neutralize at maximum the free ammonia and the hydrogen sulphide.
It is known however that the animal waste stored in anaerobic conditions in external basins and et/or under said breeding grid paving, generates ammonia vapors and troublesome odors.
Such drawback and pollution is accentuated when the sewage is spread in rural areas.
The diffusion of ammonia and hydrogen sulphide vapors inside breeding building, in particular in those endowed with said tanks under the animals, causes also stress in the animals with consequent reduction of the animal performance life.
The ammonia present inside breeding buildings, in particular during cold season, makes often necessary a constant and important air exchange by means of forced ventilation with consequent dangerous air current for the animals and high electrical energy costs for further heating.
The relative problems to the ammonia vapors emission and troublesome odors caused in stored zootechnical sewages under anaerobic conditions have been faced in different ways: name Huller Wolfgang); oxidant potassium permanganate (IT 83344A/89 in the name of the same applicant).
The bacterial and/or enzymatic mixes use have high cost and do not allow the attainment of adequate results needed by breeders.
The treatment method based on the electrolytic copper dissolution (P 0103345/IT 83344A/89) in the sewage, give good results only using high electrolytic copper dissolution dosage.
This reduces the usefulness of treated waste since copper causes toxicity and inhibits the action of the bacterial and microbial flora and constitutes a pollution danger for soil and underground water.
The method, object of the Patent Application IT 83344A/89 is too expensive and the benefits have not been so important. Be noted that the electrolytic dissociation of the salts contained in the sewage generates irritating gas.
Both the aforementioned solutions require the installation of a power consumption electric apparatus which is subject to breakdowns during rainstorms by electric discharges.
The innovative idea according to present invention is to provide the gradual diffusion of a reagent liberated from a water insoluble solid body slowly biodegradable without suing electric currents or galvanic systems which are notoriously expensive and dangerous. DE-A-2321742 discloses an aqueous solution containing formaldehyde and ferrous sulfate which is added to zootechnical wastes. Said solution is capable of preventing the formation of odors and will also improve the fertilizing power of the sewages.
This solution is a normal method to deodorize a liquid by dissolving a certain deodorizing product in the animal wastes. This solution does not solve the above raised problem to assure the
REFERENCES:
patent: 3377274 (1968-04-01), Burke et al.
patent: 3718451 (1973-02-01), Baumann
patent: 3884804 (1975-05-01), Robinson et al.
patent: 4537683 (1985-08-01), Isaeoff et al.
LandOfFree
Method for the treatment of animal waste does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for the treatment of animal waste, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the treatment of animal waste will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2011041