WO2018032831A1

WO2018032831A1 - Residual soil regeneration processing system for contaminated bottom mud in rivers and lakes

Info

Publication number: WO2018032831A1
Application number: PCT/CN2017/084963
Authority: WO
Inventors: 陈惠明; 黄东兴; 陈士强; 赵新民; 翟德勤; 王�华
Original assignee: 中电建水环境治理技术有限公司
Priority date: 2016-08-16
Filing date: 2017-05-18
Publication date: 2018-02-22
Also published as: CN106186639A; CN106186639B

Abstract

A residual soil regeneration processing system for contaminated bottom mud in rivers and lakes, comprising: a sedimentation device (10); a conditioning device (20) communicated with the sedimentation device (10) and used for conditioning and tempering mud to obtain concentrated and conditioned mud; and a pressure filtration device (30). The residual soil regeneration processing system for contaminated bottom mud in rivers and lakes performs concentration, conditioning, and modified-tempering on mud using the conditioning device (20), so as to change the inner microstructure of the mud while quickly improving the dewatering and curing effect of the pressure filtration device (30). The mud conditioned and concentrated by the conditioning device (20) enters the pressure filtration device (30) for a mud-water separation operation, and the mud is condensed by the pressure filtration device (30) to obtain a solid mud cake. The obtained mud cake has low moisture content, and the harmless treatment and resource recycling of contaminated bottom mud are implemented.

Description

River lake rushing pollution sediment treatment residual soil regeneration system

[0001] The present invention belongs to the technical field of water environment treatment, and in particular relates to a system for regenerating a residual soil in a river and lake.

Background technique

[0002] The river is a kind of open water, generally characterized by narrow water surface, long process, and tidal characteristics of coastal and offshore rivers. The lake is a relatively closed water area with wide water surface, shallow water and water flow. The characteristics of slow speed and slow water exchange are generally affected by seasonal rain. With the rapid development of the social economy, the urban population has increased sharply, and the amount of sewage discharged into urban rivers and lakes has increased greatly. Rivers and lakes have become a gathering place for various pollutants, causing serious pollution of water bodies and deteriorating water environment. The water quality has become black and stinky, and the living environment of fish and shrimp has deteriorated drastically or cannot survive. The bottom sediment of the river and lake bed is polluted by the long-term erosion of the contaminated water body, and the sedimentation of the sediment is formed for many years, which is an intrinsic pollution source that affects the quality of the water environment.

[0003] In the process of water and river environment control in rivers and lakes, the industry has gradually formed a consensus that it needs to cut off external pollution sources, remove internal pollution sources, water purification, and ecological restoration. Among them, the internal pollution source is the contaminated sediment. Due to the complex composition of the contaminated sediment and high water content, at present, the domestic sediment treatment process is natural or mechanical dehydration, material solidification, etc., for example, one is naturally placed, and the sediment is about to be sedimented. Stored in a low-lying area for natural water filtration and drying; the other is mechanical dewatering. After the material is conditioned, the sediment is dewatered and reduced by mechanical equipment, and then transported to a designated storage place. Stabilizers, curing agents and other materials are added to the contaminated sediment, mixed with various mixing equipment, stacked and maintained, and transported to the designated place after curing; the other is mechanical dewatering and solidification, during the conditioning process before mechanical dewatering Also, the solidified material is added at the same time, and stable solidification is simultaneously achieved in the process of dehydration reduction. However, the sediment after dewatering and solidification can only be used for stacking and landfilling. On the one hand, a large amount of sediment requires a large amount of space for stacking and landfilling, and on the other hand, it is impossible to regenerate the soil in the sediment. Therefore, how to realize the regeneration of residual soil during the treatment of contaminated sediment has become a technical problem to be solved in the industry.

technical problem [0004] The object of the present invention is to provide a river and lake flu pollution sediment treatment residual soil regeneration system, aiming at solving the technical problem of how to regenerate the residual soil generated during the treatment of contaminated sediment.

Problem solution

Technical solution

[0005] The present invention is achieved in this way, a river and lake flu pollution sediment treatment residual soil regeneration system, comprising: [0006] a sedimentation device for precipitating contaminated sediment after garbage separation and sediment separation And purifying treatment to obtain mud;

[0007] a conditioning device, in communication with the precipitation device, and used to perform conditioning and tempering treatment on the slurry to obtain a concentrated conditioning slurry;

[0008] A filter press device for dehydrating and solidifying the concentrated conditioning mud to obtain a regenerable residue.

[0009] Further, the conditioning device includes:

[0010] a mud stirring device, configured to receive the slurry conveyed by the sedimentation device;

[0011] a drug conditioning device for storing conditioning conditioning drugs and adding the conditioning and conditioning drugs to the slurry mixing device;

[0012] wherein the mud stirring device uniformly agitates the mud and the conditioning and tempering drug.

[0013] Further, the river lake urgency sewage sediment treatment residual soil regeneration system further includes:

[0014] A dredging device, the dredging device is placed in the sedimentation device and the slurry in the sedimentation device is delivered to the slurry agitation device.

[0015] Further, the drug conditioning device includes a storage device for storing a curing agent, is mounted on a discharge port of the storage device, and delivers the curing agent in the storage device to the A conveying device in the slurry agitating device and a dosing device for adjusting the dosage and the type of the drug according to the parameters of the slurry in the slurry agitating device.

[0016] Further, the conditioning device further includes:

[0017] a mud concentrating device, the mud concentrating device is connected between the mud stirring device and the pressure filtering device, and the slurry stirred by the mud stirring device is sent to the mud concentrating device for static Set and concentrate;

[0018] a pumping device is connected between the mud concentrating device and the filter press device to pump the concentrated mud condensed by the mud concentrating device into the filter press device. [0019] Further, the river and lake flu pollution sediment treatment residual soil regeneration system further includes:

[0020] a gas recovery utilization device, the gas recovery utilization device is connected between the pressure filtration device and the mud concentration device and used to generate the pressure filtration device during dehydration and solidification of the concentrated mud slurry Residual high pressure gas is introduced into the mud concentrating device.

[0021] Further, the river and lake flu pollution sediment treatment residual soil regeneration system further includes

[0022] a residual water purification device, wherein the residual water purification device is connected to the sedimentation device and is used for purifying a supernatant generated by sedimentation of the contaminated sediment by the sedimentation device;

[0023] The overflow device is connected between the mud concentrating device and the residual water purifying device and is configured to introduce the overflow liquid deposited in the mud concentrating device into the residual water purifying device.

[0024] Further, the river lake urgency pollution sediment treatment residual soil regeneration system further includes:

[0025] a pressure filtrate recycling device for conveying the pressure filtrate generated in the process of dehydrating and solidifying the concentrated mud slurry to the sedimentation device, wherein the pressure filtrate recovery device is connected to the Between the filter press device and the forming device.

[0026] Further, the river and lake flu pollution sediment treatment residual soil regeneration system further includes:

[0027] A gas supply device is coupled to one end of the filter press device and configured to supply high pressure gas to the filter press device.

[0028] Further, the river lake urgency sewage sediment treatment residual soil regeneration system further includes:

[0029] The residual soil utilization module uses the renewable residual soil for resource utilization or resource treatment to obtain usable building materials.

Advantageous effects of the invention

Beneficial effect

[0030] The technical effect of the present invention relative to the prior art is: the river and lake pollution sludge treatment residual soil regeneration system uses the conditioning device to concentrate the conditioning, modification and tempering of the mud produced by the sedimentation device In order to change the internal microstructure of the mud, decompose, combine, chelate, consolidate, passivate, etc. the organic matter, heavy metals and the like in the mud, and simultaneously improve the dehydration and solidification of the filter press device. Effect: the mud conditioned and concentrated by the conditioning device enters the pressure filtration device to perform a mud-water separation operation, and the mud portion of the pressure filter device is compressed to obtain a solid mud cake (also referred to as "remaining" Soil ", the same below), the obtained mud cake has a low water content, and the harmless treatment and resource recycling of the contaminated sediment are realized. Brief description of the drawing

DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention or the description of the prior art will be briefly described below. Obviously, the drawings described below are merely Some embodiments of the present invention may also be used to obtain other drawings based on these drawings without departing from the prior art.

1 is a general frame diagram of a reclaimed system for treating residual soil in a river and a river;

2 is a detailed frame diagram of the river drug conditioning device of FIG. 1;

3 is a detailed frame view of the mud concentrating device of FIG. 1.

DESCRIPTION OF REFERENCE NUMERALS

[] [Table 1]

Embodiments of the invention The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

[0037] In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical" The orientation or positional relationship of the indications of "directly", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, for convenience of description of the present invention and simplified description. It is not intended to be a limitation or limitation of the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless specifically defined otherwise.

[0039] In the present invention, the terms "installation", "connected", "connected", "fixed" and the like should be understood broadly, and may be, for example, a fixed connection or a Removable connection, or integrated; can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, which can be the internal connection of two elements or the interaction of two elements. The meaning of the above terms in the present invention can be understood by those skilled in the art on a case-by-case basis.

[0040] In order to make the objects, technical solutions and advantages of the present invention more clear, the following is in conjunction with the accompanying drawings and embodiments.

The present invention will be further described in detail.

[0041] Referring to FIG. 1 to FIG. 3, the system for regenerating the residual soil of the river and lake pollution sediments provided by the embodiment of the present invention includes:

[0042] The precipitating device 10 is configured to perform sedimentation and purification treatment on the contaminated sediment separated by garbage sorting and sediment to obtain mud;

[0043] The conditioning device 20 is in communication with the sedimentation device 10 and is used for conditioning and quenching the slurry to obtain a concentrated conditioning mud;

[0044] The filter press device 30 is configured to dehydrate and solidify the concentrated conditioning slurry to obtain a regenerable residual soil. [0045] The river lake rushing sewage sediment treatment residual soil regeneration system provided by the embodiment of the present invention uses the conditioning device 20 to concentrate, condition, modify and temper the mud generated by the sedimentation device 10 to change the The internal microstructure of the mud decomposes and combines the pollutants such as organic matter and heavy metals in the mud.

, sequestering, consolidation, passivation, etc., simultaneously improving the dewatering and solidification effect of the filter press device 30; the mud that has been conditioned and concentrated by the conditioning device 20 enters the filter press device 30 for mud-water separation Operating, and compressing the mud portion in the filter press device 30 to obtain a solid mud cake (also referred to as "remaining soil", the same below), the obtained mud cake has a low moisture content, and the Harmless treatment of contaminated sediment and resource recycling.

[0046] In this embodiment, the moisture content of the mud cake after dewatering and pressure filtration by the pressure filter device 3064 is less than 35%, and the organic content of the mud cake satisfies the "Evaluation Standard for Soil Environmental Quality of Exhibition Sites (Provisional)" (HJ350) -2007) Class B standard, heavy metal pollutant leaching meets the requirements of the "Hazardous Waste Identification Standard" (GB5085.3-2007).

[0047] In this embodiment, the sedimentation device 10 is used to separate the mud and water from the muddy water mixture produced by separating the contaminated sediment through the garbage separation and the sediment, thereby obtaining a precipitate on the precipitate. The mud at the bottom of the device 10 and the supernatant floating on the surface of the mud. In this embodiment, the filter press device 30 is a plate and frame filter press.

[0048] Referring to FIG. 1 to FIG. 3, further, the conditioning device 20 includes:

[0049] a slurry agitating device 22, configured to receive the slurry conveyed by the sedimentation device 10;

[0050] a drug conditioning device 24, for storing conditioning conditioning drugs and adding the conditioning and conditioning drugs to the slurry mixing device 22;

[0051] wherein the mud stirring device 22 uniformly agitates the mud and the conditioning and tempering drug.

[0052] The mud stirring device 22 is disposed between the sedimentation device 10 and the pressure filter device 30, and the mud and the conditioning agent delivered by the sedimentation device 10 are in the mud stirring device. In 22, the mixture is thoroughly stirred and uniformly mixed to decompose, combine, sequester, solidify, passivate, etc. the organic matter, heavy metals and the like in the slurry to obtain a modified mud, which is prepared for the subsequent pressure filtration operation.

[0053] In this embodiment, the medicine adjusting device adds a quantitative conditioning and tempering drug to the slurry stirring device 22 according to the composition of the organic matter and heavy metals in the sludge, so as to achieve the most conditioning and conditioning effect. [0054] Please refer to FIG. 1 , further, the river lake flu pollution sediment treatment residual soil regeneration system further includes: [0055] a dredging device 50, wherein the dredging device 50 is placed in the sedimentation device 10 and The slurry in the sedimentation device 10 is delivered to the slurry agitation device 22. The residual soil recycling system can realize the automatic conveying of the mud by providing the dredging device 50, and the mud conveying amount can be adjusted according to the storage amount of the mud in the sedimentation device 10 and the capacity of the mud stirring device 22, for example, A mud level sensor is disposed in the mud agitating device 22, and the dredging device 50 delivers a specified amount of mud to the mud agitating device 22 based on the height value detected by the mud level sensor.

[0056] Preferably, the dredging device 50 is a small-sized cutter suction dredger, for example, a model XZY-WNC cutter suction dredger, and the dredger is used to slurry the sedimentation device 10. It is delivered to the slurry agitation device 22.

[0057] Referring to FIG. 1 to FIG. 3, further, the drug conditioning device 24 includes a storage device 240 for storing a curing agent, and is installed on a discharge port of the storage device 240 and stores the material. The curing agent in the device 240 is delivered to the conveying device 242 in the slurry agitating device 22 and to a dosing device 244 for adjusting the dosage and the type of drug based on the parameters of the slurry in the slurry agitating device 22. The residual soil recycling system adjusts the addition amount of the curing agent according to the parameters of the mud in the slurry stirring device 22 by disposing the storage device 240 and the dosing device 244 in the drug conditioning device 24 The dosage and dosage type are adjusted.

[0058] Please refer to FIG. 2, in this embodiment, the dosing device 244 is provided with at least a first conditioning box 2440 for storing a conditioning agent and a second conditioning box 2442 for storing a heavy metal capturing agent, and is provided with a a solvent tank 2445 in which the conditioning agent and the heavy metal capturing agent are sufficiently dissolved and mixed, and a metering pump 2446 is disposed between the solvent tank 2445 and the mud stirring device 22, according to the dosage and the type of the medicine A drug is added to the slurry agitating device 22. Preferably, the conditioning agent is a flocculating agent.

[0059] In other embodiments, the stocking device 240 may also be replaced with a curing agent transporter for storing the bulk curing agent. In this embodiment, the conveying device 242 is a conveying pipe that communicates between the storage device 240 and the mud stirring device 22, and is provided with a pump body that provides power.

[0060] Please refer to FIG. 1 to FIG. 3, further, the conditioning device 20 further includes:

[0061] a mud concentrating device 26, the mud concentrating device 26 is connected between the mud stirring device 22 and the pressure filter device 30, and the slurry stirred by the mud stirring device 22 is sent to the mud Concentrated equipment Set and hold in 26 and concentrate;

[0062] A pumping device 28 is connected between the mud concentrating device 26 and the filter press device 30 to pump the concentrated mud processed by the slurry concentrating device 26 to the filter press device 30.

[0063] The river lake rushing sediment sludge treatment residual soil regeneration system is configured by the mud concentrating device 26 to calm and concentrate the mud stirred by the mud stirring device 22 to reduce the mud The moisture content is set by pumping device 28 to pump the concentrated mud into the filter press device 30.

[0064] In this embodiment, the number of the pumping devices 28 corresponds to the number of the filter press devices 30, which is at least one. Preferably, the number of pumping devices 28 is four.

Referring to FIG. 3, in the embodiment, the mud concentrating device 26 includes a first conditioning chamber 260 that communicates with the mud stirring device 22, and communicates with the bottom of the bottom of the first conditioning chamber 260. A second conditioning chamber 262 having a slurry outlet, a pumping chamber 264 in communication with the slurry outlet and having the pumping device 28 disposed therein. The tempered slurry is allowed to stand and concentrate in the first conditioning chamber 260 through the slurry agitating device 22, and a concentrated mud that sinks at the bottom of the first conditioning chamber 260 is generated, and the concentrated mud is from the first a bottom of a conditioning chamber 260 flows into the second conditioning chamber 262 and is discharged along the slurry outlet to the pumping chamber 264 where the pumping device 28 is transported to the pumping chamber 264 Dewatering and solidification treatment is performed in the filter press device 30.

[0066] Please refer to FIG. 1, further, the river and lake flu pollution sediment treatment residual soil regeneration system further includes:

a gas recovery and utilization device 60, the gas recovery and utilization device 60 is in communication with the pressure filtration device 30 and the mud concentration device 26 and is used to dehydrate the concentrated mud slurry by the pressure filtration device 30. The residual high pressure gas generated during the solidification process is introduced into the slurry concentrating device 26.

[0068] The pressure filter device 30 generates a high-pressure gas during the dehydration and solidification process of the concentrated mud, and the high-pressure gas is introduced into the mud concentrating device 26 by the gas recovery device 60, so as to The mud is tumbling in the mud concentrating device 26 to achieve agitation of the mud, avoiding sedimentation of the mud, and avoiding noise generated by concentrated release of high pressure gas.

[0069] introducing the residual high pressure gas generated by the pressure filtration device 30 during the dehydration and solidification process into the conditioning device 20 by the gas recovery and utilization device 60 to accelerate the mud disturbance, the medicament in the conditioning device 20 Mix well and prevent mud sedimentation, promote various inorganic, inorganic pollutants, heavy metals, Escherichia coli and other toxic bacteria and other pollutants in the sediment through decomposition, compounding, chelation, passivation, a series of physical, chemical, biochemical reactions, and finally Realize the effective reduction or killing of organic pollutants and toxic bacteria in the sediment, heavy gold The pollutants are converted into harmless compounds through the compounding reaction or the free heavy metal pollutants are effectively solidified into the mud cake particles produced by the pressure device by chelation and passivation, so that the mud cake (the residual soil) is leached. Meet the requirements of the "Hazardous Waste Identification Standards" (GB5085.3-2007).

In this embodiment, the peripheral wall of the slurry concentrating device 26 is disposed in the vent hole in different directions. Preferably, each of the vent holes is disposed on a peripheral wall of the second conditioning chamber 262. The gas recovery device 60 is an exhaust pipe that communicates between each of the filter press devices 30 and the vent hole, and high pressure gas is discharged from the vent hole into the mud concentrating device 26 through the exhaust pipe. And impacting the mud in the mud concentrating device 26, and tumbling under the action of gas floating, not only achieving the agitation of the mud in the mud concentrating device 26, preventing the sedimentation and siltation of the mud, and also avoiding The noise generated by the concentrated release of high pressure gas.

[0071] In this embodiment, by setting the gas recovery and utilization device 60, the perimeter noise index of the perimeter of the construction river lake and the sediment treatment plant is lower than the four standards of the Urban Area Environmental Noise Standard (GB3096-1993).

[0072] Please refer to FIG. 1, further, the river and lake flu pollution sediment treatment residual soil regeneration system further includes

[0073] a water purification device 70, the residual water purification device 70 is connected to the sedimentation device 10 and used to purify the supernatant generated by the sedimentation device 10 to precipitate the contaminated sediment;

The overflow device 72 is connected between the mud concentrating device 26 and the residual water purification device 70 and used to introduce the overflow liquid deposited in the mud concentrating device 26 into the residual water purification device 70.

[0075] In this embodiment, the slurry in the first conditioning chamber 260 is subjected to a standing and concentration process to generate an overflow liquid floating on the surface of the concentrated mud, and the water is disposed in the first conditioning chamber 260. The overflow port flows along the overflow device 72 to the residual water purification device 70 for purification treatment. The residual water purification treatment purifies the supernatant liquid generated by the sedimentation device 10 and the overflow liquid flowing out from the overflow port to realize resource regeneration of the remaining water.

[0076] Please refer to FIG. 1 , further, the river lake flu pollution sediment treatment residual soil regeneration system further includes: [0077] a pressure filtrate recycling device 80, wherein the pressure filter device 30 is used to The pressure filtrate produced during the dewatering and solidification process of the concentrated mud is sent to the sedimentation device 10, and the ballast recovery device 80 is connected between the pressure filter device 30 and the forming device.

[0078] The river and lake flu pollution sediment treatment residual soil regeneration system is provided by setting the pressure filtrate recovery device 80 It is used to recover the pressure filtrate produced by the filter press device 30, and discharge the pressure filtrate into the sedimentation device 10. Since the pressure filtrate contains a coagulating material, the mud-water separation of the muddy water mixture in the sedimentation device 10 can be accelerated by mixing the residual coagulating material in the pressure filtrate with the muddy water mixture in the sedimentation device 10, that is, The precipitation of the slurry in the sedimentation device 10 and the rate of precipitation of the supernatant are increased.

[0079] Please refer to FIG. 1 , further, the river lake flu pollution sediment treatment residual soil regeneration system further includes: [0080] a gas supply device 90 connected to the pressure filter device 30 end and used to The filter press device 30 provides a high pressure gas.

[0081] The river lake rushing contaminated sediment treatment residual soil regeneration system provides high pressure gas to the pressure filter device 30 by providing the gas supply device 90 to dehydrate the concentrated mud transferred into the pressure filter device 30. The air supply device 90 provides power to the filter press device 30. In other embodiments, the air supply device ₉₀ may be replaced by other power sources, and is not limited thereto.

[0082] Please refer to FIG. 1 , further, the river and lake pollution sedimentary sludge treatment residual soil regeneration system further includes: [0083] a residual soil utilization module 40, resource-utilizing or reclaiming the renewable residual soil Processed to obtain usable building materials. The reclaimed residual soil is resourced and utilized by the residual soil utilization module 40, for example, directly using the regenerable residual soil, and the compressed mud cake satisfies the “Evaluation Standard for Soil Environmental Quality of Exhibition Lands (Provisional)” (HJ350) -2007) Class B standard, which can be directly used for terrestrial land use, such as venue land, green land, commercial land, and public municipal land; or, the compressed mud cake is used as the main raw material, and dried, crushed, and A series of processes such as high-temperature carbonization produce ceramsite with excellent properties such as low density, light weight, heat insulation, fire resistance and earthquake resistance. Apply ceramsite to new environmentally friendly building materials, and then produce ceramsite foam concrete or large-scale riverside green grass base for wetland and landscape greening, or for sponge city stagnant water, water, clean water and permeable paving Install and provide good new lightweight and environmentally friendly materials for environmental engineering and sponge city construction, so as to achieve harmless disposal and resource utilization of sediment.

[0084] In this embodiment, the river and lake flu pollution sediment treatment residual soil regeneration system is configured to utilize the residual soil utilization module 40 to perform resource treatment and direct utilization of the mud cake. The compressed mud cake meets the Class B standard of the “Evaluation Standard for Soil Environmental Quality of Exhibition Sites (Provisional)” (HJ350-2007), and can be directly used for land use, such as venue land, green land, commercial land, and public municipal land. Use soil. [0085] Preferably, the compressed mud cake is used as a main raw material, and a series of processes such as drying, pulverization and high-temperature carbonization are used to prepare ceramsite having excellent properties such as low density, light weight, heat insulation, fire resistance and earthquake resistance. Apply ceramsite to new environmentally friendly building materials, and then produce ceramsite foam concrete or large-scale riverside green grass base for wetland and landscape greening, or for sponge city stagnant water, water, clean water and permeable paving Install and provide good new lightweight and environmentally friendly materials for environmental engineering and sponge city construction, so as to achieve harmless disposal and resource utilization of sediment.

[0086] The river lake gushing contaminated sediment treatment residual soil regeneration system provided by the embodiment of the present invention provides the conditioning device 20 and the pressure filter device 30, and the conditioning modification and the pressure of the conditioning device 20 The main technical features of the deep dewatering technology of the filtering device 30: the dredged contaminated bottom mud is removed by the grid machine to remove the floating, garbage, etc., after the large-scale sedimentation and residual sand is discharged through the classified grit sedimentation system, after the garbage separation and the separation of the mud and sand, The muddy water is introduced into the sedimentation device 10, extracted by the dredging device 50 after initial sedimentation and concentration, and transported to the conditioning device 20 through a pipeline, and the material is added and tempered according to requirements during the pumping process. The organic matter is eliminated, the heavy metal is chelated and passivated, the internal microstructure of the mud is changed, and the subsequent dehydration and solidification effect is rapidly improved. After the conditioning is completed, the slurry is transferred from the pumping device 28 to the plate and frame filter press device 30 for deep dewatering, and the mud is dehydrated to form a hard plastic mud cake having a water content of not more than 40%, which can be directly used for landscaping, or stacked. After solidification, a soil body having a certain strength and no muddy is formed for engineering construction.

[0087] The bottom mud conditioning modification and the deep dewatering technology of the plate and frame filter device 30 can be realized in the river lake urgency sewage sediment treatment residual soil regeneration system provided by the embodiment of the present invention, and the flow can be realized, the automatic operation, the treatment process Environmentally friendly, not affected by the weather, each set of equipment can handle more than 800 cubic meters of underwater natural sediment per day. The number of equipment can be determined according to the needs of the project. The interface is large, the occupied space is small, the treatment efficiency is high, the quality is stable and reliable, the factory operation, no interference to the surrounding environment, suitable for the harmless treatment of urban river and lake dredged sediment.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalents, and improvements made within the spirit and scope of the present invention should be included in the present invention. Within the scope of protection of the invention.

Claims

Claim

[Claim 1] A river and lake flu pollution sediment treatment residual soil regeneration system, characterized by comprising: a sedimentation device for precipitating and purifying contaminated sediment after garbage separation and sediment separation Get mud;

a conditioning device, connected to the sedimentation device and used for conditioning and tempering the slurry to obtain a concentrated conditioning mud;

a filter press device, configured to dehydrate and solidify the concentrated conditioning mud to obtain a regenerable residual soil. The river lake gushing contaminated sediment treatment residual soil regeneration system according to claim 1, wherein the conditioning device comprises:

a slurry agitating device, configured to receive the slurry conveyed by the sedimentation device;

a medicine conditioning device for storing the conditioning and tempering drug and adding the conditioning and tempering drug to the mud stirring device;

Wherein the mud stirring device uniformly agitates the mud and the conditioning and tempering drug.

The river lake flooding sediment treatment residual soil regeneration system according to claim 2, characterized in that:

A dredging device is placed in the sedimentation device and transports the slurry in the sedimentation device to the mud agitating device.

The river lake irrigated sludge treatment residual soil regeneration system according to claim 2, wherein the drug conditioning device comprises a storage device for storing a curing agent, and is mounted on a discharge port of the storage device. And conveying the curing agent in the stocking device to the conveying device in the mud stirring device and the dosing device for adjusting the dosage and the kind of the medicine according to the parameter of the mud in the mud stirring device .

The system for regenerating a residual soil of a river-drainage sludge treatment according to claim 2, wherein the conditioning device further comprises:

a mud concentrating device, the mud concentrating device is connected between the mud stirring device and the pressure filtering device, and the slurry stirred by the mud stirring device is sent to the mud Standing and concentrating in a concentrating device;

A pumping device is coupled between the mud concentrating device and the filter press device to pump the concentrated mud condensed by the mud concentrating device to the filter press device.

The river lake irrigated sludge treatment residual soil regeneration system according to claim 5, characterized in that:

a gas recovery device, the gas recovery device is connected between the filter press device and the mud concentrating device and used to regenerate the high pressure gas generated by the filter press device during dehydration and solidification of the concentrated mud slurry Introduced into the mud concentrating device.

The river lake urgency sewage sediment treatment residual soil regeneration system according to claim 5, characterized in that

a residual water purification device, wherein the residual water purification device is connected to the precipitating device and is used for purifying the supernatant generated by the sedimentation device to precipitate the contaminated sediment; the overflow device is connected to the mud concentrating device An overflow liquid which is used between the residual water purification device and used to precipitate the mud concentrating device is introduced into the residual water purification device.

The river lake urgency sewage sediment treatment residual soil regeneration system according to claim 1, characterized in that:

a pressure filtrate recycling device for conveying the pressure filtrate generated in the process of dehydrating and solidifying the concentrated mud slurry to the sedimentation device, wherein the pressure filtrate recovery device is connected to the pressure filter Between the device and the precipitation device.

A gas supply means is connected to one end of the filter press and is used to supply high pressure gas to the filter press.

The residual soil utilization module utilizes the renewable residual soil for resource utilization or resource treatment to obtain usable building materials.