DD201617A1 - EQUIPMENT FOR OBTAINING AGRICULTURAL LIQUID SUGAR SLUDGE FROM INTERNAL WATERS - Google Patents

Abstract

The invention relates to the following fields: agriculture, water management, environmental protection, fishing, recreation. The aim of the invention is to fully automatically recover from internal waters of any depth biodegradation products in the form of Schlaemmen, zuzufuehren these over irrigation agricultural land as humus-forming and sanitize the waters thereby or to protect against eutrophication. Essence of the invention is a device which pulls a submarine sled over the sludge by means of a cable from which a sludge pump through a suction head via a flexible, floating Foerderleitung pumps the mud ashore, where it is fed to precipitation of the sand portion of a sprinkler. Blockages are prevented by flushing at controllable intervals. The degradation of the mud restores the original soil relief of the water. The fields of application of the invention relate to: -the agricultural use of sludge, -Sanierungsmassnahmen the water industry, -Resolution of degradation products of any intensive management, sludge from bathing beaches and can be combined.

Description

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233942

Title of the invention:

Device for obtaining agricultural fermentable sludge from inland waters

Field of application of the invention:

The facility is suitable to gain agriculturally digestible sludge from standing inland waters of any depth and the ecological conditions in terms of remediation; of the water body; to influence.

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The facility is suitable to produce the biological decomposition products resulting from intensive production of fish and poultry in stagnant water without negatively affecting or interrupting production in or on your body of water.

The device refers to the fields of application:

- agricultural use of sludge to increase soil fertility

- water management measures

- Elimination of degradation products of any intensive management from waters

- Desludging of recreational baths The areas of application are ~ settable7 ~~

27.JM 1982 * 986149

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Characteristic of the known technical solutions

Daulschlamnigewinnung or water restoration is currently z. essentially carried out with Saugspülbaggern different design and capacity.

The Sinsatztiefe these devices is limited by the generally used rigid suction pipe and the suction capacity of the sludge pump used.

Depending on the consistency of the conveyed medium, it amounts to 3-15 m.

The size of the existing crawler excavator makes use in smaller waters without navigable inflow through the extensive demolition and assembly work uneconomical. The grain size of the extracted sludge-water mixture includes ^ e ^ ekte ^ / "e" ^ r ^ "^ ur ^ ^ agriculture

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In OS 2137716 - Class Ξ0 2 F 3/88 a procedure is described for the purification of silted waters up to a maximum depth of -15 s.

Sin pump unit located outside the water sucks the sludge by means of a suction line designed as a spiral line. This is occupied by a vibration generator with such a frequency that the sludge is loosened, but no gelatinization occurs. Within 4 meters of the pump unit, extraction is possible. The control of the suction is carried out in terms of location in the radius of the suction line of a companion raft with underwater observation window.

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The OS 2921317 class SO 2 F 3 / 9o describes a dredging vehicle that can be moved over the seabed.

The excavator vehicle is hydraulically controllable - and by runners also the floor adaptable.

This vehicle is suitable for use at depths from 3600 to 60,000 feet and is towed by a ship.

The control is accordingly from the ship.

All o.g. technical sludge recovery solutions have the following technical disadvantages:

- Insufficient working depth (^ 15 m) in the sense of the complete rehabilitation of a body of water

- low or no degree of automation

- Comparatively low flow rates due to the Saugrohr- or excavator principle

- Changes in the original soil relief of the water body due to the lack of control of exclusive sludge removal

- too much sludge required for the technical and economic acceptability of their use

- no connection to agricultural

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Other technical solutions in the sense of comparability with the present invention sina not known.

Aim of the invention

The aim of the invention is to recover from stagnant waters of any depth agriculture digestive fermentable digested sludge or biological degradation products from intensive farming and to rehabilitate the waters thereby or to protect against further eutrophication.

Explanation of the essence of the invention

The task is to create a suitable facility, with the help of any depth in standing inland water bodies is reached and the digested sludge with a grain size ^ 8 mm can be promoted directly agricultural irrigable without disturbing the ecology of the water.

According to the invention this is achieved by means of a '^ Seilzu it ei ^ U ^ ^ tjerwassersc litte over ¹⁰ de ¹⁰ sapropel

is pulled. On the sled is an underwater mud

pump mounted. The Gewiciax of the carriage is regulated by buoyancy bodies. About the cable the carriage is connected to a working raft on which the winches are stationed with associated control center.

Another cable causes the transverse displacement of the working raft to the axis of the direction of movement of the underwater slide, so that an areal degradation of the digested sludge is ensured.

The sludge is sucked by the mounted on the underwater sledge pump through a suction strainer located on the suction head and pumped via a flexible floating delivery line to land, where it is fed after precipitating the sand content directly to the agricultural irrigation system. For hard slurries, which can not expect a satisfactory flow rate solely by the suction negative pressure of the pump, plowshare-like loosening devices are mounted on the underwater slide, which supply the suction head the eligible sludge.

The blockage of the screen and the delivery line is prevented by a backwash pump, which at controllable intervals via a two-way check valve valve, the delivery line,

flushes.

Embodiment:

The device for producing excitable sludge consists of the components: underwater assembly for loosening up, taking up and conveying the sludge; Sludge conveyor line; Work raft and control center.

On the underwater sledge an underwater sludge or dirty water pump of modern design is installed. The carriage is moved by means of a cable pull on the surface of the digested sludge and has at the bottom height adjustable the suction opening with sieve,

is prevented and the optimal immersion depth of the suction head

The buoyancy bodies are designed as Seitlicne guide skids, which are in the. Press in mud and cause a relatively linear direction of movement; At the same time they prevent sinking into firmer media than sludge. Thus, the promotion of lying below the mud layers is excluded and the relief of the river bottom not changed.

The subsidized by the underwater unit mud-water mixture is pumped by a floating on the water surface conveyor line to land and fed after passing through a Sandabsetzbeckens directly irrigation system of conventional design.

The supply takes place in accordance with the removal of the irrigation system from the body of water by direct flushing into its intake shaft or when using a sludge intermediate pump by direct input into a sludge sprinkler line or on the pressure side of a water sprinkler system

by entering with a sludge injector.

The delivery line consists of the firmly interconnected components; Air-carrying hose, mud conveyor line and electric cable for the W-mud pump.

The air pressure in the carrying tube is adjusted by an adjustable pressure reducing valve the pressure conditions corresponding to the depth of underwater schlitirens and thus assumes the dual function of floating body for the delivery line and buoyancy regulator for the UW slide. The air supply of the support tube is made by a small compressor corresponding'Print and delivery.

The work raft is equipped with four winch drives, of which two work in push-pull and take over the longitudinal and transverse travel of the underwater slide. By a Zugkraftbegrenzungseinrichtung the traction cables are protected from occurring overstress and. Dodging the underwater sled steered against obstacles. The control unit for the winch drives is also located on the work raft and is powered by a cable movably guided on the cross rope.

Due to the longitudinal and transverse cable arrangement, three fixed points on the bank are required for the desired Flake reduction, which satisfy the cable tensile forces (trees or tree piles).

The entire system is controlled and monitored by a shore-based control center.

The UW-carriage 'departs the specified area according to the set program until the mud layer has been removed and the original ground relief has been restored.

The program can be entered manually by continuous measurement of the existing mudness or by a computer programmed according to a bearing orientation.

Ss regulates the mixing ratio of the pumped medium, the conveying-rinsing intervals, the longitudinal and lateral thrust of the UW slide and the failure shutdowns during unattended operation of the system.

Claims (7)

233942 O claims , Means for obtaining agriculturally excitable Paul mud from standing inland waters of any depth characterized in that this device from a means of cable (3 * 9 / 3.1o) guided over the bottom, buoyancy regulated, equipped with an underwater mud pump carriage (Io), the winches carrying by winch drive movable working raft (3 · ο) un.d a floating buoyancy-regulating feed line (2.o) consists. 2. Device according to item 1, characterized in that the intake manifold of the underwater slurry pump (1.3) sin suction head with sieve (1.4) is mounted, the grain size of he se rushed mud and Sausi'Grderleistuna; the "um" DS resums. "-Ü..LJ Ui-; 3- device according to item 1, characterized in that the sludge delivery line (2.2), the sludge pump (1.3) and the suction head with sieve (1.4) at controlled intervals by a scavenge pump (2.4) by means of a · two-way check valve (2.5) in Gegenstrompriipip with water be flushed to prevent reduction in flow and blockage. 4 · Device according to item 1, characterized in that the runners (1.1) of the underwater slide (1.o) are designed as buoyancy bodies and do not allow sinking into stronger media as sludge and thus a change in the relief of the water body is prevented. 23 3 9 42 O 5. Device nacn point 1, dadurcn marked that the upper cable (3.y) of the longitudinal movement of the Uhterwasserschlittens (1.o) on roller bearing (1.7) on IJnterwasserschlitten (1.o) is guided in such a way that contact with the floating conveyor line (2.o) is excluded. 6. Device according to item 1, characterized in that the pumped sludge is entered through a sludge injector on the pressure side of a conventional Wasserverregnungsanlage in this and thus the Verregnung a regulated sludge Wassergemiscnes can be done. 7. Device according to item 1, characterized in that the durcn this device enabled areal degradation of the sludge on a longitudinal and transverse thrust (3), the consistency of the feed mixture, the conveyor SoüIint ervalle, the maximum grain size of the recorded sludge, the Conveyor rope, the flow rate, the sufficiency of the UTJ slide against obstacles and mechanical as well as electrical emergency shutdown determining program is controlled automatically