Slag liquid filtering combined device

Abstract

The utility model provides a residue liquid filtering combined device which comprises a ceramic membrane filtering system and a plate-and-frame filter pressing system, a feeding hole of the plate-and-frame filter pressing system is communicated to a slag liquid pool through a pipeline; the ceramic membrane filtration system is provided with a liquid inlet, a filtrate outlet and a slurry outlet; a filtrate outlet of the plate-and-frame pressure filtration system is communicated with a liquid inlet of the ceramic membrane filtration system through a pipeline; a slurry outlet of the ceramic membrane filtration system is communicated to the slag liquid pool through a pipeline; the slag liquid pool is filled with a mixture of slag liquid to be treated and slurry discharged by the ceramic membrane filtration system; and a filtrate outlet of the ceramic membrane filtration system is communicated to a product solution tank through a pipeline. The technical scheme provided by the utility model is suitable for the condition that the content of suspended matters in a slag-liquid mixture is high, and a final product solution obtained by filtering is high in quality.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, and more specifically, to a combined sludge-liquid filtration device. Background Technology

[0002] In chemical processes such as solid waste treatment, the crushing, dissolving, or water quenching of solid waste often yields a slag-liquid mixture with a high solid content. This mixture is often complex in composition and requires multiple processing steps. Solid-liquid separation of the slag-liquid mixture to obtain high-quality filtrate is beneficial for subsequent processing. Filtrate obtained by using only a plate and frame filter press generally still contains a high amount of suspended solids, increasing the difficulty of subsequent filtrate processing. Furthermore, excessively high solid content in the slag-liquid mixture can easily damage and clog ceramic membrane filtration systems. Therefore, designing a reasonably structured slag-liquid filtration device is crucial. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a combined sludge-liquid filtration device for filtering sludge-liquid mixtures under conditions requiring high filtrate quality.

[0004] The technical means adopted in this utility model are as follows:

[0005] A combined sludge-liquid filtration device includes a ceramic membrane filtration system and a plate and frame filter press system;

[0006] The feed inlet of the plate and frame filter press system is connected to the sludge tank via a pipeline.

[0007] The ceramic membrane filtration system is equipped with a liquid inlet, a filtrate outlet, and a slurry outlet.

[0008] The filtrate outlet of the plate and frame filter press system is connected to the inlet of the ceramic membrane filtration system via a pipeline.

[0009] The slurry outlet of the ceramic membrane filtration system is connected to the sludge tank via a pipeline; the sludge tank contains a mixture of the sludge to be treated and the slurry discharged from the ceramic membrane filtration system; the filtrate outlet of the ceramic membrane filtration system is connected to the product solution tank via a pipeline.

[0010] Furthermore, the plate and frame filtration system is used to filter the mixture of the sludge to be treated in the sludge tank and the slurry discharged from the membrane filtration system; the ceramic membrane filtration system is used to filter the filtrate discharged from the plate and frame filter press system, and the filtrate obtained after filtration is the product solution after sludge treatment.

[0011] Furthermore, a slurry pump is provided between the sludge tank and the plate and frame filter press system for transporting a mixture of the sludge to be treated in the sludge tank and the slurry discharged from the membrane filtration system.

[0012] Furthermore, it also includes a filtrate collection tank, wherein the filtrate outlet of the plate and frame filter press system is connected to the inlet of the filtrate collection tank via a pipeline, and the outlet of the filtrate collection tank is connected to the liquid inlet of the ceramic membrane filtration system via a pipeline.

[0013] Furthermore, the membrane inside the ceramic membrane filtration system is a flat sheet membrane made of silicon carbide.

[0014] Furthermore, a backwash pump I is provided between the product solution tank and the ceramic membrane filtration system for periodically supplying the product solution to the ceramic membrane filtration system for backwashing.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The sludge-liquid filtration combination device provided by this utility model uses a ceramic membrane filtration system and a secondary filtration plate and frame filter system to filter the filtrate, thereby filtering the sludge-liquid mixture with a high concentration of suspended solids and producing a high-quality filtrate.

[0017] Based on the above reasons, this utility model can be widely promoted in the field of chemical solid waste treatment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the sludge-liquid filtration combination device of this utility model. Detailed Implementation

[0020] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0023] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0024] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0025] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0026] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0027] Example 1

[0028] like Figure 1 As shown, this utility model provides a combined sludge filtration device, including a ceramic membrane filtration system and a plate and frame filter press system;

[0029] The feed inlet of the plate and frame filter press system is connected to the sludge tank via a pipeline.

[0030] The ceramic membrane filtration system is equipped with a liquid inlet, a filtrate outlet, and a slurry outlet.

[0031] The filtrate outlet of the plate and frame filter press system is connected to the inlet of the ceramic membrane filtration system via a pipeline.

[0032] The slurry outlet of the ceramic membrane filtration system is connected to the sludge tank via a pipeline; the sludge tank contains a mixture of the sludge to be treated and the slurry discharged from the ceramic membrane filtration system; the filtrate outlet of the ceramic membrane filtration system is connected to the product solution tank via a pipeline.

[0033] Furthermore, the plate and frame filtration system is used to filter the mixture of the sludge to be treated in the sludge tank and the slurry discharged from the membrane filtration system; the ceramic membrane filtration system is used to filter the filtrate discharged from the plate and frame filter press system, and the filtrate obtained after filtration is the product solution after sludge treatment.

[0034] Furthermore, a slurry pump is provided between the sludge tank and the plate and frame filter press system for transporting a mixture of the sludge to be treated in the sludge tank and the slurry discharged from the membrane filtration system.

[0035] Furthermore, it also includes a filtrate collection tank, wherein the filtrate outlet of the plate and frame filter press system is connected to the inlet of the filtrate collection tank via a pipeline, and the outlet of the filtrate collection tank is connected to the liquid inlet of the ceramic membrane filtration system via a pipeline.

[0036] Furthermore, the membrane inside the ceramic membrane filtration system is a flat sheet membrane made of silicon carbide.

[0037] Furthermore, a backwash pump I is provided between the product solution tank and the ceramic membrane filtration system for periodically supplying the product solution to the ceramic membrane filtration system for backwashing.

[0038] Furthermore, it also includes a backwash pump II and a cleaning tank containing acidic cleaning solution. The backwash pump II is located between the outlet of the cleaning tank and the inlet of the ceramic membrane filtration system. It is used to periodically deliver the acidic cleaning solution from the cleaning tank to the ceramic membrane filtration system for rinsing. After the ceramic membrane filtration system is rinsed with the acidic cleaning solution, the product solution is delivered by the backwash pump I for backwashing. The acidic cleaning solution is recycled back to the cleaning tank after rinsing. The product solution after backwashing enters the sludge pool.

[0039] Furthermore, the pipes, mud pump, backwash pump I, and backwash pump II used in the sludge filtration combination device are all wear-resistant and resistant to material corrosion.

[0040] Furthermore, the ceramic membrane filtration system has a membrane spacing of 10 mm, a membrane pore size of 100 nm, and a sludge-liquid treatment capacity of 120 m³ / h. 3 / h;

[0041] The plate and frame filter press system uses an XAZGFQ700 / 200-UK plate and frame filter press with a feed pressure of 0.6MPa-0.8MPa, a pressing pressure of 12MPa, a back pressure of 30MPa, and a filtration pressure of 0.8MPa.

[0042] The sludge-liquid filtration combination device provided by this utility model is suitable for situations where the suspended solids content in the sludge-liquid mixture is high, and the final product solution obtained by filtration has high quality. Specific working process:

[0043] The sludge to be treated is collected and mixed in a sludge tank, then pumped into a plate and frame filter press system for filtration. The filtrate produced by the plate and frame filter press system is then sent to a ceramic membrane filter system. The filter cake produced by the plate and frame filter press system is sent for external disposal. The sludge obtained from the ceramic membrane filter system is then sent to a sludge tank for mixing and then back into a plate and frame filter press system for filtration. The filtrate obtained after filtration by the ceramic membrane filter system is the product solution. The product solution is collected in a product solution tank and then sent to the next process.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A combination slag-liquid filtration apparatus, characterized by, The ceramic membrane filtration system and the plate-and-frame filter pressing system are included. The feed inlet of the plate-and-frame filter pressing system is connected to the residue-liquid pool through a pipeline. The ceramic membrane filtration system is provided with a liquid inlet, a filtrate outlet and a slurry outlet. The filtrate outlet of the plate-and-frame filter pressing system is connected to the liquid inlet of the ceramic membrane filtration system through a pipeline. The slurry outlet of the ceramic membrane filtration system is connected to the residue-liquid pool through a pipeline.

2. The combination slag liquid filter apparatus according to claim 1, wherein, The residue-liquid pool is filled with a mixture of the residue-liquid to be treated and the slurry discharged by the ceramic membrane filtration system.

3. The combination slag liquid filter apparatus of claim 1 wherein, The plate-and-frame filter pressing system is used to filter the mixture of the residue-liquid to be treated and the slurry discharged by the membrane filtration system in the residue-liquid pool.

4. The combination slag liquid filter apparatus of claim 1 wherein, The ceramic membrane filtration system is used to filter the filtrate discharged by the plate-and-frame filter pressing system, and the filtered filtrate is the product solution after residue-liquid treatment.

5. The combination slag liquid filter apparatus of claim 1 wherein, A slurry pump is arranged between the residue-liquid pool and the plate-and-frame filter pressing system to transport the mixture of the residue-liquid to be treated and the slurry discharged by the membrane filtration system in the residue-liquid pool.

6. The combination slag liquid filter apparatus of claim 1 wherein, A filtrate collection pool is further included, the filtrate outlet of the plate-and-frame filter pressing system is connected to the inlet of the filtrate collection pool through a pipeline, and the outlet of the filtrate collection pool is connected to the liquid inlet of the ceramic membrane filtration system through a pipeline. The membrane sheet inside the ceramic membrane filtration system adopts a flat sheet membrane form, and the material of the membrane sheet is silicon carbide. A backwashing pump I is arranged between the product solution tank and the ceramic membrane filtration system to periodically transport the product solution to the ceramic membrane filtration system for backwashing.

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