Abstract:
A process for stabilization of biological sludge provides the step of laying in a containing volume, or basin (1), a draining material (2). In particular, the layer of draining material (2) can be a layer of gravel having granulometry set between 40 and 70 mm and a height (h1) about 25 cm. On the first layer (2) a second draining layer (3) can be laid comprising a material, for example gravel having granulometry less than the first layer (2), set between 4 and 6 mm. The second layer (3) has preferably a height (h2) about 15 cm. Once made the draining layers (2, 3) a planting step is made in the second layer (3) of a plurality of seedlings of an aquatic macrophyte, preferably Phragmites australis (10). The base granular filtering gravel layer has also the function of supporting the root of the seedlings. To ensure a high efficiency of the process a measured density of plants is chosen, corresponding to a relative distance between two seedlings of Phragmites australis set between 40 and 60 cm. once achieved a measured vegetative growth, a first spilling in the containing volume (1) is carried out of an amount of biological sludge (12). The amount of sludge (12) fed in the containing volume (1) corresponds to a predetermined height, set between 2 and 4 cm, of the layer of sludge (12) on the draining layer (3).
Abstract:
A vertical manure converter and related process of using activated carbon in an activated carbon/ organic material mixture to process organic waste. Inducing air, preferably compressed, into a chamber of the converter in combination with reusing activated carbon can result in a continuous process. The temperature can be controlled by regulating the air into the chamber. The vertical manure converter takes organic waste and uses heat to accelerate the composting process wherein final products can be purified water and ash fertilizer.
Abstract:
A process for stabilization of biological sludge provides the step of laying in a containing volume, or basin (1), a draining material (2). In particular, the layer of draining material (2) can be a layer of gravel having granulometry set between 40 and 70 mm and a height (hi) about 25 cm. On the first layer (2) a second draining layer (3) can be laid comprising a material, for example gravel having granulometry less than the first layer (2), set between 4 and 6 mm. The second layer (3) has preferably a height (h2) about 15 cm. Once made the draining layers (2, 3) a planting step is made in the second layer (3) of a plurality of seedlings of an aquatic macrophyte, preferably Phragmites australis (10). The base granular filtering gravel layer has also the function of supporting the root of the seedlings. To ensure a high efficiency of the process a measured density of plants is chosen, corresponding to a relative distance between two seedlings of Phragmites australis set between 40 and 60 cm. once achieved a measured vegetative growth, a first spilling in the containing volume (1) is carried out of an amount of biological sludge (12). The amount of sludge (12) fed in the containing volume (1) corresponds to a predetermined height, set between 2 and 4 cm, of the layer of sludge (12) on the draining layer (3).
Abstract:
A system and method for treating solid waste includes a trommel screen and a composting unit. The trommel screen includes an inlet hopper and a rotating screening drum, which can be equipped with internal channeling members and bag rippers with blades. A composting and/or dewatering apparatus has a vessel portion, a cover portion and an internal auger. The apparatus includes a plurality of openings along its vessel portion to permit a volume of liquid from within the composting apparatus to be eliminated. The composting/dewatering unit can also include a sleeve member along the outside of the vessel portion. In one embodiment, waste items passing through the screening drum of the trommel screen are conveyed into the composting unit. In another embodiment, the discharged liquid is collected in one or more liquid collection structures and is conveyed to a clarifier tank.
Abstract:
L'invention concerne une méthode et un système de production de biofertilisants, à partir de boues stabilisées, séchés et riches en matières fertilisantes en provenance de procédé de traitement d'effluents à forte charge. Cette solution peut être intégrée à une installation déjà existante de traitement d'effluents organiques industriels, municipaux ou agricoles (100), et elle est basée sur la récupération de l'énergie thermique dégagée pendant les étapes de traitement d'un tel système par les bioréacteurs (120), les unités de surpression d'air (122), les unités de bioséchage (500) et de séchage (600), et autres unités. Cette récupération d'énergie créée une synergie permettant l'augmentation de l'efficacité et du rendement des bioréacteurs (120) suite à une plus grande stabilité provenant de la régulation de la température, assurant ainsi une importante économie d'énergie pour l'étape finale de séchage dans la production des biofertilisants.
Abstract:
The invention relates to a method and device for treating effluents, in particular effluents from a careening area, a method for pre-treating sludge received from the effluent-treating unit of the inventive device and to careening stations provided with said devices. The inventive treating method comprises a first stage consisting in recovering and treating the effluents in a treatment unit (102) and a second stage consisting in pre-treating the sludge received therefrom. The treating process carried out in said unit consists in a) transferring the sludge to a tank (113), b) dehydrating said sludge by natural evaporation, c) restarting the step a) if the sludge layer is sufficiently thin for carrying out a correct dehydration, d) removing water from the bottom part of the tank if the sludge layer is too thick and in e) transferring the content of the tank to a special-purpose vehicle and reusing said tank.
Abstract:
The invention relates to a method and tunnel composting plant for drying organic material, in particular for manufacturing fuel from organic material, in particular from sludges and possible support substances, by exploiting mechanical composting. In the method, the organic materials are divided into the batches required by mechanical compost processing operating on the batch principle, each batch being composted separately and dried as a separate phase by means of thermal energy external to the batch, preferably produced by composting other batches.
Abstract:
The invention concerns a method for treating effluents in small communities, that is communities consisting of about 200 to 2000 inh.eq (inhabitant equivalent), characterised in that it consists in: carrying out a biological treatment of the effluent using a trickling filter eliminating matters suspended in the treated effluent, and, simultaneously performing a treatment of the sludge by filtering-composting on filters planted with reeds.
Abstract:
A solid waste retrieval device utilizes a rotating drum carrying a plurality of teeth to lift dried sludge from an underlying sand bed such that substantially no sand is removed with the sludge. The device moves over the sludge and compresses it beneath a forward rolled radius section to prevent buckling and disruption of the sludge ahead of the device.
Abstract:
A low cost method and apparatus for maintaining and rejuvenating a septic system in which an activated gaseous fluid formed byirradiating an oxygen containing gas, such as ambient air, with radiation having a wavelength below 200 nanometers produced by a lowpowered ultra-violet lamp (20) is brought into intimate contact with liquid in the effluent chamber (12) of a septic tank (10) to effect a substantial reduction in the concentration of suspended solids, volatile solids and fecal coliform in the liquid. The activated fluid can also be brought into intimate contact with a drainage field of a septic system clogged with deposists of water-insoluble sulfides, polysaccharide gums and anaerobic organisms to improve the permeability of the drainage field. The effluent from a septic tank (10) which has been treated with activated gaseous fluid, after filtering to remove suspended solids and subjected to a second treatment with the activated gaseous fluid, is surface quality water.