DE102007030927A1 - Method for sludge-disposal of small sewage purification plants, comprises sucking out, pumping out and/or withdrawing out bottom sludge and/or floating sludge from the purification plant and then filling the sludge in a dewatering device - Google Patents

Abstract

The method for sludge-disposal of small sewage purification plants, comprises sucking out, pumping out and/or withdrawing out the bottom sludge and/or floating sludge from the purification plant with a sucking-, a pumping device and/or scoops and then filling the sludge in a dewatering device, dewatering the sludge in the dewatering device by centrifugation and/or pressing the sludge and then producing a water predominantly consisting of liquid constituents and a dewatered thickened sludge, and returning the liquid component in the purification plant by a returning device. The method for sludge-disposal of small sewage purification plants, comprises sucking out, pumping out and/or withdrawing out the bottom sludge and/or floating sludge from the purification plant with a sucking-, a pumping device and/or scoops and then filling the sludge in a dewatering device, dewatering the sludge in the dewatering device by centrifugation and/or pressing the sludge and then producing a water predominantly consisting of liquid constituents and a dewatered thickened sludge, returning the liquid component in the purification plant by a returning device connected at the dewatering device, and collecting and/or storing the thickened sludge in a collection- and/or transport container for receiving the thickened sludge and then transporting. The collection- and/or transport container are connected at the dewatering device, integrated in the dewatering device or placed in the dewatering device. The purification plant is started with maintenance- and/or disposal vehicle, which are equipped with a movable sludge-disposal device. The sucking device and/or the pumping device of the sludge-disposal device are connected to the purification plant over a hose and/or pipe. The returning device for returning the liquid component in the purification plant comprises the hose and the pipe and is connected to the purification plant. The thickened sludge is supplied to a solar-drying process. The container has a cover with rubber seal, closure locking for air-tight sealing, wheels, rollers for simple handling and/or loop for mounting a transport lock. The solar-drying process takes place in a movable solar-drying container, which has a glass cover and/or a Plexiglass(RTM: Methacrylates) cover. The solar-drying container has double-walled and/or horizontally arranged metal floors for receiving the thickened sludge. The thickened sludge is initially given on a first metal floor for drying process and then conveyed to a second metal floor or a container base below the first metal floor after a given time and/or after reaching a given drying degree by shaking or by a scraper. The sludge is automatically turned during conveying. A further metal floor is arranged below the second metal floor. The sludge is conveyed from an overhead metal floor to the metal floor or the container base arranged under it. The sheet metal floor is double-walled with an internal cavity and/or a tubing system, which is flowed by hot water and/or is filled with hot water for supplying additional drying heat. Water heating is carried out by solar cells arranged and/or attached to an external container wall. The solar-dried sludge is supplied to a movable composter for rotting. The sludge is step-wisely filled into the composter. The solar-dried and/or rotted sludge is granulated and/or volume-reduced by baling press and/or briquette press. The solar-dried, rotted, volume-reduced and/or granulated sludge is guided to thermal utilization or is used as fertilizer. The process is modularly developed, and forms a first process module, a second process module for transporting the thickened sludge, a third process module for solar-drying the thickened sludge, a fourth process module for rotting the sludge, a fifth process module for granulating and/or volume-reducing the sludge, a sixth process module for thermal utilization and a seventh process module for utilizing as fertilizer. The individual process modules are co-ordinated to each other, so that the modules from the second module up to the seventh module are applied additively to the first module. Independent claims are included for: (1) a device for solar-drying thickened sewage sludge; and (2) a device for sludge-disposal of small sewage purification plants.

Description

The The invention relates to a method and devices for sludge disposal of sewage treatment plants, especially small sewage treatment plants.

small wastewater treatment are sewage treatment plants, the for until are designed to 50 population equivalents. They usually come then used when connecting to a municipal sewage treatment plant not possible, for example, at single houses or farms or small settlements.

In sewage treatment plants, also small sewage treatment plants, As a rule, a multi-stage cleaning of the wastewater takes place. in this connection The result is sludge that has to be disposed of. Typical mud types are the primary mud from a primary treatment and the secondary sludge from a biological purification stage.

Of the in the wastewater treatment resulting sludge, such as Primary- and secondary sludge, is common in small sewage treatment plants stored in an integrated sludge storage. The at the sewage treatment accumulating and getting in the sewage treatment plant accumulating sewage sludge must be disposed of at regular intervals become. The known for this Method is a wet sludge removal or wet sludge disposal, d. H. in the sewage treatment plant accumulated, wet mud is removed and without further treatment transported away and sent for disposal. This procedure is included huge sewage treatment plants, d. H. Facilities with large accumulating sludge volumes, common and certainly also economically operable.

at Small sewage treatment plants, the usual a much smaller collectable sludge volume than large sewage treatment plants have, however, is the regular sludge disposal with high costs. In conventional Small wastewater treatment plants usually have to every one to two years the accumulated sludge is disposed of. Modern small wastewater treatment plants have ever smaller accumulating sludge volumes, so that the disposal intervals become even shorter, whereby the disposal costs, the one to a big one Part caused by the required approach with a disposal vehicle will continue to increase.

in addition comes that the wet sludge from small wastewater treatment plants usually to large municipal sewage treatment plants is delivered. Especially in regions with high small sewage treatment plant density ranges the absorption capacity However, the municipal facilities not for the disposal of all small wastewater treatment plants. The disposal route via municipal sewage treatment plants is therefore far from everywhere ensured. The result is long transport routes to plants with free capacity, which is associated with correspondingly high costs and also from an environmental point of view not desirable is.

A possible Composting of wet sludge on site, d. H. at the site of the small sewage treatment plant, with following Self-utilization of the small wastewater treatment plant operator is for epidemiological reasons concern. There is also the justified fear that, for example Do not degrade medications and / or other pollutants and thus always on the same surfaces be applied, so that a material cycle with uncontrolled Enrichment results.

It The object of the invention is an alternative to wet sludge disposal Method and for this suitable devices for the sludge disposal of sewage treatment plants, especially small sewage treatment plants specify. With this method or these devices should the Sludge disposal of small sewage treatment plants assured and about it also inexpensive feasible be.

in this connection should a material cycle with incalculable risks, for example the above accumulation of pollutants are avoided.

These Task is in terms of the method with the features of claim 1 and in terms of the devices with the features of claim 17 or of claim 24 solved. Advantageous embodiments and further developments emerge from the respective dependent claims.

• a) Absaugen und/oder Abpumpen und/oder Abschöpfen des Schlamms, insbesondere des Bodenschlamms und/oder des Schwimmschlamms, aus der Kläranlage, insbesondere mit wenigstens einer Saug- und/oder Pumpeinrichtung und/oder mit einer oder mehreren Schöpfkellen, und Einfüllen des Schlamms in eine Entwässerungseinrichtung,
• b) Entwässern des Schlamms in der Entwässerungseinrichtung, insbesondere durch Zentrifugieren und/oder Pressen des Schlamms, und hierbei Erzeugung einer zumindest überwiegend aus flüssigen Bestandteilen, insbesondere Wasser, bestehenden flüssigen Komponente und eines zumindest weitgehend entwässerten (im Sinne einer Grobentwässerung), eingedickten Schlamms,
• c) Rückführen der flüssigen Komponente in die Kläranlage, insbesondere mittels wenigstens einer an die Entwässerungseinrichtung angeschlossenen Rückführeinrichtung, und
• d) Sammeln und/oder Lagern des eingedickten Schlamms, insbesondere in wenigstens einem an die Entwässerungseinrichtung angeschlossenen oder in die Entwässerungseinrichtung integrierten oder der Entwässerungseinrichtung beigestellten Sammel- und/oder Transportbehälters zur Aufnahme des eingedickten Schlamms.

The inventive method for sludge disposal of sewage treatment plants, especially small sewage treatment plants, comprises the following steps:

• a) suction and / or pumping and / or skimming the sludge, in particular the bottom sludge and / or the scum, from the sewage treatment plant, in particular with at least one suction and / or pumping device and / or with one or more ladles, and filling the sludge into a drainage device,
• b) dewatering of the sludge in the dewatering device, in particular by centrifuging and / or pressing the sludge, and thereby producing a liquid component consisting at least predominantly of liquid constituents, in particular water, and an at least substantially dewatered (in the sense of coarse dewatering), thickened sludge,
• c) returning the liquid component to the sewage treatment plant, in particular by means of at least one return device connected to the drainage device, and
• d) collecting and / or storing the thickened Sludge, in particular in at least one connected to the drainage device or integrated into the drainage device or the drainage device provided collecting and / or transport container for receiving the thickened sludge.

The Advantages of the method according to the invention lie especially in the drainage of sewage sludge. As a result, the sludge volume to be removed is considerably reduced and the collection and / or transport container can be dimensioned correspondingly smaller be. So they can be in or on small transport vehicles, For example, typical maintenance vehicles with which maintenance professionals to the Drive sewage treatment plants, accommodate. This makes it possible at regular intervals sewage treatment plants scheduled maintenance work with the sludge disposal. On these vehicles lets also a for the implementation apparatus for sludge disposal required in the aforementioned method steps, the closer below is described, so that in addition to the relatively small Transport vehicle or maintenance vehicle no other vehicles to transport the required device are required. With only one approach can thus both the wastewater treatment and the Sludge disposal performed become. this leads to to a considerable reduction of the maintenance and disposal costs the sewage treatment plant. In particular, this aspect is of relevance in small sewage treatment plants. Overall, the inventive method designed the sewage sludge disposal much easier and thus makes a decisive contribution on waste security, inter alia on the basis of the abovementioned significantly lower sludge volumes to be disposed of.

One Another advantage is that the liquid fraction in sewage sludge and / or the overwater the sewage treatment plant at least largely in the sewage treatment plant or remains on site or in the sludge sampling on the spot back in the sewage treatment plant is returned. This liquid Share represents, for example, a nutrient supplier for the various active organisms in the treatment plant represents.

According to one Continuing the procedure is provided that the sewage treatment plant first with a maintenance and / or disposal vehicle equipped with a mobile sludge supply device is equipped, is approached. On site then at least one suction and / or pumping the Sludge supply device connected to the treatment plant, in particular special to the sewage treatment plant joined, in particular about at least one hose and / or at least one pipe. Further, too at least one return device for the return of the liquid Component in the sewage treatment plant, in particular comprising at least one hose and / or at least one pipe, with the sewage treatment plant connected, in particular connected to the treatment plant.

The Procedure may also provide that after collection and storage of the drained sludge and / or after a separation of the suction and / or pumping device and / or the Return means from the sewage treatment plant the dehydrated one Sludge is removed and sent for disposal or recycling, in particular with one or the maintenance and / or disposal vehicle.

Of the at least one collecting and / or transport container may be a plastic container, in particular a formed from low pressure polyethylene plastic container, wherein the container preferably a lid with rubber seal and / or locking closure for airtight sealing and / or wheels and / or rollers for easy Handling and / or eyelets for attaching a transport safety device.

According to one Process variant is the thickened sludge of a solar drying fed. The solar drying can be done in a solar drying container, in particular in a mobile solar drying container, wherein the Solar drying container at least one transparent cover, in particular a glass and / or Plexiglas cover has. Further The solar drying container can one or more, in particular closely meshed and / or at least substantially horizontally arranged, rust floors for Receiving the thickened sludge, wherein the thickened Mud at first is placed on a topmost grate floor for drying and after a predetermined time and / or after reaching a predetermined Degree of drying on a arranged below the top rust floor second Rostboden or the container floor be promotes be, in particular by Shake or by means of a scraper, the sludge being transported during this transport is preferably turned, in particular automatically. Below of the second rust floor may be arranged at least one further grate floor and the mud after a predetermined time and / or after reaching a predetermined degree of drying each of an overhead Rust floor on an underlying rust floor or the container floor promoted be, especially by shaking or by means of a scraper, the sludge being transported during this transport is preferably turned, in particular automatically.

It is also possible that the solar drying container one or more, in particular double-walled and / or at least substantially horizontally arranged sheet metal floors for receiving the thickened sludge, wherein the thickened sludge is first placed on a top plate for drying and after a predetermined time and / or after reaching a predetermined degree of dryness on a below the uppermost sheet metal bottom arranged second sheet tray or the container floor is conveyed, in particular by shaking or by means of a scraper, wherein the sludge is preferably turned in this promotion, in particular automatically. At least one further sheet metal bottom can be arranged below the second sheet metal bottom and the sludge can be conveyed from an overhead sheet metal floor to an underlying sheet metal bottom or the container floor after a predetermined time and / or after reaching a predetermined degree of dryness, in particular by shaking or by means of a scraper, wherein the sludge is preferably turned in this transport, in particular automatically.

Of the The aforementioned metal floor can be double-walled with an internal cavity and / or pipe system may be formed, wherein the cavity or the Pipe system is flowed through by warm water and / or with warm Filled with water will provide additional Drying heat, being the water heating preferably over Solar cells takes place, in particular on the container, preferably an outer container wall, arranged and / or attached solar cells.

According to one Another method variant is the thickened, in particular already solar-dried sludge fed to a composter for rotting, in particular a mobile composter, preferably made of PVC. Here is the Sludge preferably filled in layers in the composter.

In A further method step may be provided that the thickened, preferably solar-dried and / or rotted, Sludge granulated and / or volume reduced, in particular by pressing, preferably in a baling press and / or briquetting press.

Finally, can the thickened, preferably solar-dried and / or rotted and / or volume reduced and / or granulated, sludge of a thermal Recycling supplied or as a fertilizer be used.

The above-described methods according to the invention is preferably modular, d. H. the procedure is established composed of different building blocks. Here, the initially described forms Process step comprising suction, pumping or skimming the Mud, draining the Mud, repatriation of liquid Component and collecting or storing the thickened sludge first process module, or the transport of the thickened Mud forms a second process module, one or the solar Drying the thickened sludge forms a third process module, one or the rotting in a composter forms a fourth process module, one or more granulation and / or volume reduction forms fifth Process module, one or the thermal utilization forms sixth method module and / or one or use as fertilizer forms a seventh process module. The individual process modules are preferably coordinated such that one or more Modules from the group second to seventh module additively to the first Module are applicable or can be applied.

The modular structure of the method is particularly advantageous because the Requirements for the final product of the process are dependent from the place of origin, the local public Sewage treatment infrastructure and other local Conditions. Depending on the local Conditions can thus on the basis of the modules the appropriate Disposal procedures are compiled. The for individual Modules required devices are preferably designed mobile, thereby the flexibility of the procedure is underlined.

The inventive device for the solar drying of sewage sludge, in particular thickened sewage sludge is or includes a solar drying container, in particular a mobile solar drying container, preferably a roll-off or settling container. The solar drying container has at least a transparent cover, in particular a glass and / or Plexiglas cover, on.

These Device is particularly intended for use in the above inventive method.

One The main advantage of this device is the compact design and the easy transportability of the container. This can the device easily and without much financial expense or in the vicinity be brought to the respective sludge attack site, it eliminates costly and polluting long transport of sludge to the device.

According to one variant, the solar drying container has one or more, in particular closely meshed and / or at least substantially horizontal and / or superposed, Rostböden for receiving the mud. The one or more grate floors are arranged such that the sludge is first aufgarst on a top grate floor for drying or is abandoned and after a predetermined time and / or after reaching a predetermined degree of drying on a arranged below the uppermost grate floor second grate floor or the container floor is conveyed , in particular by means of a vibrator or by means of a scraper. Preferably, the further promotion is designed so that the mud is turned here, in particular automatically.

Below of the second grate floor can be arranged at least one further grate floor be such that the mud after a predetermined Time and / or after reaching a predetermined degree of drying each from an overhead grate floor to an underlying Rostboden or the container floor is conveyed, in particular by means a vibrating device or by means of a scraper. Again preferred is further promotion also designed here so that the mud in the further promotion is turned, in particular automatically.

According to one another variant, the solar drying container has one or more, in particular double-walled and / or at least substantially horizontal arranged, sheet metal floors for receiving the sludge on (on its top), the or the sheet metal floors are arranged so that the mud first on a top sheet metal floor for drying or abandoned and after a predetermined Time and / or after reaching a predetermined degree of drying on a arranged below the top sheet metal second Sheet metal bottom or the container floor is conveyed, in particular by means of a vibrating device or by means of a scraper. Preference is given to further promotion Again designed so that the mud is turned here, especially automatically.

Below the second sheet metal floor can be at least one further sheet metal floor be arranged, in such a way that the mud after a predetermined Time and / or after reaching a predetermined degree of drying each from an overhead metal floor on one underneath arrange th Sheet metal bottom or the container floor is conveyed, in particular by means of a vibrating device or by means of a scraper. Again preferred is further promotion also designed here so that the mud in the further promotion is turned, in particular automatically.

A Further training provides that the metal floor is double-walled with an internal cavity and / or pipe system, designed for the passage of warm water to provide additional heat of drying. On this way, the mud is not only from above through the sun, but also dried from below by the heat of the water. Is appropriate in this case, if the solar drying container, preferably on an outer container wall, has one or more solar cells, trained and set up for the warming of the sheet metal or the floors flowing through Water. As a result, the energy of solar radiation is not only directly used for drying the sludge, but also indirectly, by doing that for the drying in addition used water is also heated by the solar radiation.

The inventive device for the sludge disposal of sewage treatment plants, especially small sewage treatment plants, comprises at least one suction and / or pumping device, at least a hose and / or at least one tube over which the suction and / or pumping device can be connected to the sewage treatment plant, in particular to the sewage treatment plant connectable is.

she further comprises at least one of the suction and / or pump device connected drainage device for drainage the removed or removed with the suction and / or pumping device Mud, with the drainage device is designed to at least one at least predominantly of liquid components existing liquid Component and an at least largely dehydrated, thickened sludge to produce (in the sense of coarse drainage).

One Another component of the device according to the invention is at least one to the drainage facility connected return device for the return of the liquid Component in the treatment plant, the return device comprises at least one tube and / or at least one tube, that with the sewage treatment plant is connectable, in particular to the sewage treatment plant can be connected.

to Device according to the invention belongs furthermore at least one to the drainage device connected or in the drainage device integrated collection container for receiving the thickened sludge.

The Device is particularly intended for use in the above inventive method.

The advantages of this device result from the advantages explained for the method according to the invention, so that in this regard reference is made to the corresponding explanations above becomes.

According to one Embodiment of the invention is or includes the drainage device a filter unit. The filter unit in turn can be a filter bag be or include a filter bag, the filter bag at the same time one in the drainage facility integrated collection container represents.

The dehydrator may also be or include a centrifuge.

A Continuing education provides for a removal device, over which in the sump absorbed thickened sludge can be transferred to a disposal or recycling facility.

According to one preferred and advantageous embodiment of the device according to the invention the device is designed as a mobile unit, in particular as can be mounted and / or built on a motor vehicle and / or transportable unit.

All in all Thus, a method for sludge disposal of sewage treatment plants, especially small sewage treatment plants, and for this proposed suitable devices, whereby the production of a thickened, at least largely dehydrated and thereby reduced in volume and thus transportable sludge is possible. Compared to the conventional Wet sludge disposal are for the disposal no big, special Disposal vehicles more necessary, but can the sludge disposal by means of conventional Maintenance vehicles take place. It can thus be the already regular maintenance trips also equal for use the sludge disposal, which is a significant cost reduction brings with it.

Further allows the built of individual modules or blocks process a flexible adaptation to the respective local conditions, so that from the available standing, coordinated module system each optimal Disposal process can be compiled. The necessary for this Devices can then be provided. These are preferably mobile and therefore can at or near the respective place of collection of the disposal or be set up to be treated mud. Due to the mobility is no permanent installation required, the devices can also only for the time of her actual Set up and then transported to the next site become. Furthermore, the capacity an acceptance point by setting up additional devices, for example the solar drying container, fast and inexpensive the respective amount of seizure be adjusted.

The to ensure proposed methods and / or the associated devices thus a flexible, simple, inexpensive and in every way environmentally friendly way of sewage sludge disposal, in particular - but not limited to this - in small sewage treatment plants.

The Invention will also be described below with regard to further features and Advantages based on embodiments explained in more detail.

• 1) Klärschlammentnahme mit Eindickung (Grobentwässerung)
• 2) Klärschlammtransport in speziellen Rollbehältern
• 3) Solare Trocknung in mobilen Solartrocknungscontainern
• 4) Kompostierung bzw. Verrottung in mobilen Behältern
• 5) Pressen bzw. Volumenreduzierung
• 6) thermische Verwertung (z. B. nach der Trocknung)
• 7) Verwendung als Dünger in der Landwirtschaft bzw. im Landschaftsbau (z. B. nach der Kompostierung bzw. Verrottung)

An exemplary method according to the invention comprises the following building blocks or modules:

• 1) Sewage sludge removal with thickening (coarse drainage)
• 2) sewage sludge transport in special roll containers
• 3) Solar drying in mobile solar drying containers
• 4) composting or rotting in mobile containers
• 5) pressing or volume reduction
• 6) Thermal utilization (eg after drying)
• 7) Use as fertilizer in agriculture or landscaping (eg after composting or rotting)

The individual blocks can in various ways to the respective framework conditions best-suited procedures are put together. For example can the inventive method already after module 1 or module 2 ends. Module 3 and Module 4 may alternatively used to each other (for example, an at least almost complete solar drying (10 to 19% residual moisture), to a sludge product to lead, that afterwards without composting or rotting equal to a thermal utilization according to module 6 can be fed is; or alternatively, a composting or rotting without previous solar drying take place). But the modules 3 and 4 can also be used in a row, that is, initially solar drying (in particular here only slightly Drying) and then composting or rotting. The modules 6 and 7 usually form alternative last process steps. The thermal utilization is expediently carried out after drying, a composting or rotting is not required for this. The usage as a fertilizer however, it is expediently done to a composting or rotting, one (in particular solar) drying can be connected upstream. If necessary, before the two aforementioned last modules, a volume reduction or granulation of the sludge useful or necessary.

following Be exemplary embodiments for the individual Modules closer described.

For example becomes module 1, sewage sludge removal with thickening, first the bottom mud in the sludge storage tank of the small wastewater treatment plant by means of a pump or alternatively by means of a ladle from the small wastewater treatment tank in promoted a drainage tank. Of the existing scum is skimmed off and also filled into the dewatering tank. Residues of sewage sludge remain as inoculant in the sludge storage of the small sewage treatment plant.

through a centrifuge, such as a centrifuge comparable to a 5 kg spin dryer, however with wheels and thus transportable, water is withdrawn from the raw sludge. alternative If necessary, the sludge can also be pressed. Basically must in this process step, the liquid part of the sludge are at least largely separated from the solid part, d. H. the mud is thickened. He is thus easier to transport, Furthermore, only a much smaller volume and a clear lower mass to be transported. The separated liquid part, the excess water, is returned directly to the small sewage treatment tank.

Of the thickened sewage sludge gets into special transport containers filled. These transport containers are for example similar a big waste bin constructed, for example, they are made of high quality plastic, z. B. low pressure polyethylene. bikes guarantee a slight mobility of the transport container. A rubber seal in the Cover with locking latch ensures an airtight seal while of transport. Special eyelets on the wall of the transport container enable a transport protection in accordance with the regulations in one Delivery trucks.

module 2, the transport of the roughly drained (thickened) sewage sludge, sees a transport in the transport containers already described above or roll containers in front. This transport can also be done with vehicles, usually be used by the maintenance staff of a small sewage treatment plant. Of course Here are the rules for the commercial small sludge transport respected.

module 3, the solar drying in mobile containers, sets a mobile, also over long distance transportable device for solar sewage sludge drying one. In this case comes into consideration a sheet steel roll-off container or a settling container, the is designed as a solar drying container. This one is with one transparent cover, such as a glass or Plexiglas cover closed or lockable. The closed construction creates a glasshouse effect or Greenhouse effect leading to correspondingly high temperatures inside leads.

in the Containers are tight-meshed, horizontal rust floors installed. These serve the intake of the pre-drained (thickened) sewage sludge. Of the Distance between the floors results from the desired capacity of the container. charged the sludge is placed on the topmost grate, from there it is drained a predetermined drying time or after reaching a predetermined Degree of drying a further transport by shaking (in particular by machine) or manually, for example by means of a scraper, on the next below lying rust floor. By the transport process from the upper level to the level below it is automatically a turning process, d. H. the mud is turned. This turning process is preferred more often during the Solar drying repeated, expediently at the transition to the next, lower level.

alternative can instead of the rust floors double-walled sheet metal floors be used. Here it is possible, through warm water, which flows through the interior (cavity) of the metal sheets, to provide additional heat of drying. The generation of for the water heating required heat takes place for example via Solar cells attached to the container wall.

By a standardized container design can be on commercial, widely used and available trucks be used as a means of transport. It eliminates expensive special transports.

The Process module 4, the composting or rotting in mobile containers involves a process of converting the sludge into a new product and thus a recycling. The mobile container is for example, a sewage sludge composter made of plastic, z. As PVC, especially black plastic. This may be round in cross-section, for example barrel-like. It is expedient if the container holes for the Air circulation, makes sense, the provision of crane suspensions. The individual process modules can be strung together in different ways. Module 3 and 4 can alternatively be used to each other. But it is also possible and even a preferred variant, first a solar drying according to module 3, However, this drying early, at a given degree of drying, cancel and then the Layer by layer into the sewage sludge composter fill.

The Module 5 includes a volume reduction, for example by pressing. Usually will this module 5 after the solar drying according to Module 3 and / or after the Rotting according to module 4 used. By means of a baler, for example, hygienic harmless bales, especially wrapped bales, in any desired Size made become. These bales could then easily transported to a thermal recycling plant become. Briquetting presses allow the manufacture of compost balls. A further processing for example in energy crops or landscaping is thus possible.

alternative For pressing a production of granules is possible, the For example, directly from the solar drying out packed in bags can be.

module 6, the thermal recovery, usually after solar drying and subsequently Volume reduction by means of pressing.

module 7, use as fertilizer in agriculture or landscaping, is usually done after composting or rotting, usually takes place in advance additionally a volume reduction. The resulting after pressing substrate is suitable as a complete fertilizer in landscaping and also in agriculture. By composting it is harmless to epidemic hygiene. An application on land for Production of food should not be done. This will a substance cycle with uncontrolled accumulation of drugs or otherwise possibly avoided unknown substances.

Of the modular structure of the method according to the invention allows the Adaptation of the procedure to the respective circumstances. It is also possible, that the procedure first relies on individual modules, to which then other steps than those described here connect, for example other ways of recycling.

All in all The invention provides a hitherto customary wet sludge disposal alternative disposal route. All components or devices the disposal chain of the embodiment are mobile. Thus, the respective treatment plant, for example the solar drying container, in the vicinity of the wastewater treatment plants to be disposed of be set up and used. The invention eliminates ecological and economically nonsensical, mostly long transport of wet sludge.

Claims (29)

Method for sludge disposal of sewage treatment plants, especially small sewage treatment plants, comprising the following steps: a) aspiration and / or pumping and / or skimming of the sludge, in particular of the bottom sludge and / or of the floating sludge, from the sewage treatment plant, in particular with at least one suction and / or pumping device and / or with one or more ladles, and filling the mud into a drainage device, b) Drain the sludge in the drainage facility, in particular by centrifuging and / or pressing the sludge, and thereby producing at least predominantly liquid components, in particular water, existing liquid component and a at least largely drained, thickened mud, c) returning the liquid Component in the treatment plant, in particular by means of at least one of the drainage device connected return device, and d) collecting and / or storing the thickened sludge, in particular in at least one to the dewatering device connected or in the drainage device integrated or the drainage device provided collecting and / or transport container for receiving the thickened Sludge. Method according to claim 1, characterized, that a) the treatment plant first with a maintenance and / or disposal vehicle equipped with a mobile sludge supply device is equipped, is approached, and b) that at least one suction and / or pumping device the sludge supply device is connected to the treatment plant, in particular to the sewage treatment plant is connected, in particular at least a hose and / or at least one pipe, and c) that at least a return device for the return of the liquid Component in the treatment plant, in particular comprising at least one hose and / or at least a pipe, with the sewage treatment plant is connected, in particular connected to the treatment plant. Method according to claim 1 or 2, characterized that after collection and / or storage of the thickened sludge and / or after disconnecting the suction and / or pumping device and / or the return device from the sewage treatment plant the collected in the or the collection and / or transport containers and / or stored thickened sludge removed and one Disposal or recycling supplied is, in particular with one or the maintenance and / or disposal vehicle. Method according to one of the preceding claims, characterized in that the min at least one collecting and / or transport container is a plastic container, in particular a plastic container formed from low-pressure polyethylene, wherein the container preferably has a lid with rubber seal and / or Verschlussarretierung for airtight seal and / or wheels and / or rollers for easy handling and / or Has eyelets for attaching a transport safety device. Method according to one of the preceding claims, characterized characterized in that the thickened sludge of a solar drying supplied becomes. Method according to claim 5, characterized in that that the solar drying takes place in a solar drying container, in particular in a mobile solar drying container wherein the Solar drying container at least one transparent cover, in particular has a glass and / or Plexiglas cover. Method according to Claim 6, characterized that the solar drying container one or more, in particular close-meshed and / or at least substantially horizontally arranged, rust floors Receiving the thickened sludge, wherein the thickened Mud at first is placed on a topmost grate floor for drying and after a predetermined time and / or after reaching a predetermined degree of drying on a second arranged below the top shelf rust second Grated floor or the container floor is transported, in particular by Shake or by means of a scraper, the sludge being transported during this transport is preferably turned, in particular automatically. Method according to claim 7, characterized in that that at least one further grate floor below the second grate floor is arranged and the mud after a predetermined time and / or After reaching a predetermined degree of drying of each one overhead grate floor on an underlying rust floor or transported the container floor is, in particular by shaking or by means of a scraper, the sludge being transported during this transport is preferably turned, in particular automatically. Method according to one of claims 6 to 8, characterized that the solar drying container one or more, in particular double-walled and / or at least substantially horizontal, sheet flooring for receiving the thickened sludge, wherein the thickened Mud at first is placed on a top sheet tray for drying and after a predetermined time and / or after reaching a predetermined Degree of drying arranged on a below the top sheet second sheet metal floor or the container floor is conveyed, in particular by Shake or by means of a scraper, the sludge being transported during this transport is preferably turned, in particular automatically. Method according to claim 9, characterized that at least one further sheet metal bottom below the two sheet metal bottom is arranged and the mud after a predetermined time and / or After reaching a predetermined degree of drying of each one overhead sheet metal floor on an underlying sheet metal floor or the container floor is, in particular by shaking or by means of a scraper, the sludge being transported during this transport is preferably turned, in particular automatically. Method according to claim 9 or 10, characterized that the metal floor is double-walled with an internal cavity and / or pipe system, which is flowed through by warm water and / or filled with warm water will provide additional Drying heat, being the water heating preferably over Solar cells takes place, in particular on the container, preferably an outer container wall, arranged and / or attached solar cells. Method according to one of the preceding claims, characterized in that the thickened, in particular already solar-dried, sludge for rotting a composter is supplied, in particular a mobile composter, preferably made of PVC. Method according to claim 12, characterized in that that the sludge is filled in layers in the composter. Method according to one of the preceding claims, characterized characterized in that the thickened, preferably solar-dried and / or rotted, sludge granulated and / or volume reduced is, in particular by pressing, preferably in a baler and / or briquette press. Method according to one of the preceding claims, characterized characterized in that the thickened, preferably solar-dried and / or rotted and / or reduced-volume and / or granulated, Sludge is sent for thermal recycling or used as fertilizer becomes. Method according to one of the preceding claims, characterized in that the method is modular, wherein the method according to claim 1 forms a first method module and / or transport of the thickened sludge forms a second process module and / or one or more solar drying of the thickened sludge forms a third process module and / or rotting in a composter forms a fourth process module and / or granulation and / or volume reduction forms a fifth process module and / or one or the thermal utilization forms a sixth process module and / or one or use as fertilizer forms a seventh process module, wherein the individual process modules are preferably coordinated such that one module or more modules from the group second to seventh module are additively applicable to the first module or applied. Apparatus for solar drying of sewage sludge, in particular thickened sewage sludge, in particular for use in a method according to claim 5 or according to one the claims 6 to 16 in conjunction with claim 5, characterized in that the device is a solar drying container or a solar drying container comprises, in particular a mobile solar drying container, preferably a rolling or Absetzcontainer, wherein the solar drying container at least one transparent cover, in particular a glass and / or Plexiglas cover. Device according to claim 17, characterized in that that the solar drying container one or more, in particular close-meshed and / or at least substantially horizontal and / or one above the other arranged, rust floors for receiving the sludge, wherein the or the rust floors so are arranged, that the mud first on a topmost rust floor for Drying is available or abandoned and after a predetermined Time and / or after reaching a predetermined degree of drying on a second arranged below the top shelf rust second Rostboden or the container floor is conveyed, in particular by means a vibrating device or by means of a scraper. Device according to claim 18, characterized in that that at least one further grate floor below the second grate floor is arranged, in such a way that the mud after a predetermined Time and / or after reaching a predetermined degree of drying each from an overhead grate floor to an underlying Rostboden or the container floor is conveyed, in particular by means a vibrating device or by means of a scraper. Device according to one of claims 17 to 19, characterized that the solar drying container one or more, in particular double-walled and / or at least substantially horizontally arranged, metal sheets for Receiving the sludge, wherein the sheet metal or the like are arranged that the mud first on a top sheet metal floor for drying or abandoned and after a predetermined Time and / or after reaching a predetermined degree of drying on a arranged below the top sheet metal second Sheet metal bottom or the container floor is conveyed, in particular by means of a vibrating device or by means of a scraper. Device according to claim 20, characterized in that that at least one further sheet metal bottom below the two sheet metal bottom is arranged, in such a way that the mud after a predetermined Time and / or after reaching a predetermined degree of drying each from an overhead metal floor to an underlying arranged Sheet metal bottom or the container floor is conveyed, in particular by means of a vibrating device or by means of a scraper. Device according to claim 20 or 21, characterized that the metal floor is double-walled with an internal cavity and / or pipe system, designed for the passage of warm Water to provide additional heat of drying. Device according to claim 22, characterized in that that the solar drying container, preferably on an outer container wall, one or more solar cells are arranged, designed and set up for the warming of the sheet metal or the floors flowing through Water. Apparatus for sludge disposal of sewage treatment plants, in particular small sewage treatment plants, in particular for use in a process according to claims 1 to 16, comprising a) at least one suction and / or pumping device comprising at least one hose and / or at least one pipe through which the suction b) at least one dewatering device connected to the suction and / or pump device for dewatering the sludge taken or removed with the suction and / or pumping device, the dehydrating device being able to be connected to the sewage treatment plant designed to produce at least one liquid component consisting at least predominantly of liquid constituents and at least substantially dewatered, thickened sludge; c) at least one return device connected to the dewatering device for returning the liquid component to the sewage treatment plant , the at least one hose and / or at least one tube, which is connectable to the treatment plant, in particular to the treatment plant can be connected, and d) at least one connected to the dewatering device or integrated into the dewatering device collecting container for receiving the thickened sludge. Device according to claim 24, characterized in that that the drainage device a Filter unit is or comprises a filter unit. Device according to claim 25, characterized in that that the filter unit is a filter bag or a filter bag wherein the filter bag at the same time integrated into the dewatering device Clippings represents. Device according to one of claims 24 to 26, characterized that the drainage device a centrifuge is or comprises. Device according to one of claims 24 to 27, characterized that a removal device is provided, via which the recorded in the collecting container thickened sludge can be transferred to a disposal or recycling facility. Device according to one of claims 24 to 28, characterized that the device is designed as a mobile unit, in particular as can be installed and / or built on a motor vehicle and / or transportable unit.