High solid content wastewater treatment device

Abstract

The application belongs to the technical field of industrial wastewater treatment equipment, and particularly relates to a high-solid-content wastewater treatment device, which comprises a reactor inner cylinder, a reactor outer cylinder, a tubular membrane assembly, a thermal reaction table located below the membrane assembly, a liquid inlet pipe, a water outlet, an exhaust outlet and a residue outlet; the membrane assembly is located in the reactor inner cylinder, and a valve is installed at the end of the membrane assembly; the liquid inlet pipe is installed at one end of the inlet of the membrane assembly; the water outlet is located between the reactor inner cylinder and the membrane assembly; the exhaust outlet is located at the upper part of the reactor outer cylinder; the residue outlet is located at the lower part of the reactor outer cylinder and is used for discharging the residue after reaction; the thermal reaction table is located above the residue outlet and below the valve of the membrane assembly and is used for heating the filtered residue of the membrane assembly; the wastewater treatment device adopting the technical scheme of the application can solve the problems that the existing device can only realize solid-liquid separation and is difficult to make wastewater resourceful and has high treatment energy consumption.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of industrial wastewater treatment equipment, and particularly relates to a high-solid-content wastewater treatment device. BACKGROUND

[0002] High-solid-content wastewater such as anaerobic digestion liquid contains a large amount of inorganic and organic matters, and some even contain a certain concentration of toxic and harmful substances, which have potential risks to the environment, and therefore need to be environmentally treated.

[0003] Although Chinese patent CN113788513A discloses a filtering and separating device and application thereof, and realizes solid-liquid separation by adopting a ceramic membrane under cross-flow filtration technology, but it mainly realizes solid-liquid separation, and the subsequent product still needs to be further treated, such as anaerobic digestion, so as to meet the discharge standard; although Chinese patent CN214383741U discloses a treatment device for hot hydrolysis sludge anaerobic digestion liquid, and adopts a forward osmosis unit and a high-salt concentration unit to treat the digestion liquid, which solves the problem of difficult treatment of hot hydrolysis sludge anaerobic digestion liquid, but the process is complex, the energy consumption is high, and the generated solid substances often exist in the form of sludge, which is difficult to be resourcefully utilized.

[0004] In view of the above problems of the prior art, it is necessary to provide an improved device. SUMMARY

[0005] The application aims to provide a device for treating high-solid-content wastewater, so as to solve the problems that the existing device can only realize solid-liquid separation and is difficult to be resourcefully utilized, and the treatment energy consumption is high.

[0006] In order to achieve the above-mentioned purpose, the application provides a high-solid-content wastewater treatment device, which comprises a reactor inner cylinder, a reactor outer cylinder, a membrane assembly, a heating device, a heat accumulator, a gas inlet pipe, a liquid inlet pipe, a water outlet, an exhaust outlet and a residue outlet.

[0007] The connection between the liquid inlet pipe, the membrane assembly and the reactor inner shell is fixed by a flange, which facilitates disassembly and assembly,

[0008] The water outlet is used for timely discharging the filtered liquid passing through the membrane assembly from the reactor inner cylinder, so as to reduce the energy consumption of the heating device;

[0009] The residue outlet is used for timely discharging the residue after reaction at the upper part of the heat accumulator from the reactor outer cylinder, and the residue can be used for road paving and the like, so as to achieve resourceful utilization of waste;

[0010] The exhaust outlet is used for discharging the gas after reaction from the reactor outer cylinder.

[0011] The heating device adopts one or more of electric heating, plasma and natural gas to provide a heat source;

[0012] The heat accumulator is made of one or more of silicon and aluminum materials, which can lock the temperature released by the heating device, reduce the heating frequency and reduce the heat loss.

[0013] The membrane assembly is made of inorganic membrane assembly and adopts a tubular structure.

[0014] As a preferred solution, in order to ensure the durability of the reactor, the outer shell and the inner shell are made of stainless steel.

[0015] In order to facilitate the supply of industrial wastewater and ensure the durability of the inlet pipe, the inlet end of the inlet pipe is connected to a high-pressure pump, and the outlet is communicated with the membrane assembly; one end of the air inlet pipe is connected to an air compressor, and the other end is communicated with the membrane assembly; an electric valve is arranged at the outlet end of the membrane assembly; through the joint action of the valve and the high-pressure gas in the air inlet pipe, the retained substances attached to the membrane assembly are promptly discharged to the upper part of the heat accumulator for reaction; the inlet pipe is made of stainless steel.

[0016] As a preferred solution, in order to better lock the temperature, reduce the heating frequency and reduce the heat loss, the heat accumulator is made of one or more of silicon and aluminum materials, and the heating device can be intermittently heated; at the same time, a drain is installed in the inner cylinder of the reactor, which can promptly discharge the filtered liquid out of the system; through the joint action of the heat accumulator and the drain, the energy consumption of the filtered liquid can be reduced, the energy consumption can be greatly saved, and the cost can be reduced.

[0017] As a preferred solution, in order to ensure the filtration efficiency of the membrane assembly and reduce the use cost, the structure of the membrane assembly adopts a common tubular membrane on the market; the tubular membrane is a permeable tube in the inner cylinder of the reactor; according to the filtration requirement, different small holes with different pore sizes are separated, mainly involving one or more of microfiltration, ultrafiltration and nanofiltration holes.

[0018] As a preferred solution, in order to facilitate the installation of pressure and temperature monitoring elements and accurately detect the reaction temperature and pressure, a plurality of pressure and temperature monitoring ports are arranged on the reactor, and the opening design of the temperature and pressure monitoring ports is provided with a sleeve and a flange.

[0019] As a preferred solution, in order to facilitate the turning and cleaning of the substances on the hot reaction table, a blowing pipe is further arranged on the hot reaction table.

[0020] As a preferred solution, in order to clean the filtered substances on the membrane assembly and avoid the influence of the filtration efficiency caused by the blockage, the gas in the air inlet pipe adopts pulse supply, and the pulse frequency of the gas is the same as or close to the inherent frequency of the filtered substances.

[0021] The high solid-containing wastewater treatment device can treat high solid-containing wastewater, and the generated waste residue can be used as auxiliary material for road paving, the filtrate filtered by the membrane assembly is discharged from the system in time, the energy consumption of the heating device is reduced, the heat accumulator is arranged to maximize the use of the energy provided by the heating device, and the problem of high energy consumption is fundamentally solved.

[0022] Compared with the existing wastewater treatment device on the market, the device has the following advantages:

[0023] 1. The treatment device is simple, the high solid-containing wastewater is filtered through the membrane assembly, the filtrate is filtered and discharged in time, the energy consumption of the filtrate is reduced, and the heat accumulator arranged can store energy, greatly reducing the heating frequency and reducing heat loss.

[0024] 2. The membrane assembly is fixed on the reactor inner cylinder through the flange, the liquid inlet pipe and the gas inlet pipe are fixed on the membrane assembly through the flange, the filtered substances, i.e. large particle substances, are pressed and resonated by the high-pressure gas in the gas inlet pipe, so that the water content is reduced and the subsequent heat reaction energy consumption is reduced, and after the valve is opened, the filtered substances can be effectively separated from the membrane assembly and discharged, and fall on the surface of the heat reaction table to react, so that the COD and other substances are oxidized into harmless carbon dioxide and water, thereby realizing harmless treatment, the gas after reaction is directly discharged, the disposal cost of the subsequent product is reduced, and the cost is saved.

[0025] 3. The device has high practicability, wide application range, and can treat high solid-containing wastewater to meet the discharge standard, reduce environmental pollution, and reduce energy consumption, and has high economic and social effects. BRIEF DESCRIPTION OF DRAWINGS

[0026] The drawings accompanying the specification of this application serve to provide further understanding of the present application, and the illustrative embodiments of the present application and their descriptions serve to explain the present application, and do not constitute improper limitations on the present application. Among them:

[0027] Figure 1 FIG. 1 is a structural schematic view of a high solid-containing wastewater treatment device according to an embodiment of the present application;

[0028] Figure 2 FIG. 2 is another structural schematic view of a high solid-containing wastewater treatment device according to an embodiment of the present application;

[0029] Figure 3 FIG. 3 is a sectional structural schematic view of a high solid-containing wastewater treatment device according to an embodiment of the present application;

[0030] In the figure: 101 - reactor outer cylinder, 102 - reactor inner cylinder, 103 - blowing pipe, 201 - membrane module, 202 - liquid inlet pipe, 203 - gas inlet pipe, 301 - heating device, 401 - heat accumulator, 501 - water outlet, 601 - gas outlet, 701 - slag outlet. DETAILED DESCRIPTION

[0031] The application will be described in detail below with reference to the drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the application, but not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the application. It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict.

[0032] In the description of the application, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and do not require the application to be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the application. The terms "connected", "connected" used in the application should be understood broadly, for example, it can be fixed connection, can also be flange connection; can be threadedly connected, can also be indirectly connected through an intermediate part, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0033] As shown in Figure 1 , Figure 2 and Figure 3 , the embodiment of the application provides a high solid-containing wastewater treatment device, which comprises a reactor outer cylinder 101, a reactor inner cylinder 102, a membrane module 201, a liquid inlet pipe 202, a gas inlet pipe 203, a heating device 301, a heat accumulator 401, a water outlet 501, a gas outlet 601 and a slag outlet 701.

[0034] The reactor outer cylinder 101 provides a reaction site for the device, is made of stainless steel, and preferably has a vertical circular tank form. The reactor outer cylinder 101 has a reactor inner cylinder 102 designed inside. The membrane assembly 201 is fixed to the reactor inner cylinder 102 through a flange. The liquid inlet pipe 202 and the gas inlet pipe 203 are connected and fixed to the membrane assembly 201 through a flange. The membrane assembly 201 is tubular and preferably inorganic heat-resistant film. High-solid-content wastewater is pumped into the membrane assembly 201 through the liquid inlet pipe 202. The membrane assembly 201 is fixed vertically to the liquid inlet pipe 202. Under the action of the membrane assembly 201, the high-solid-content wastewater is treated, and large-particle substances (filtrates) are intercepted. Small-molecule filtrate substances pass through the membrane assembly 201 and are discharged from the reactor inner cylinder 102 through a drain port 501. The large-particle substances are intercepted on the inner wall of the membrane assembly 201, thereby achieving a solid-liquid separation effect. Under the action of high-pressure resonance gas in the gas inlet pipe 203, the large-particle substances can be further dewatered to reduce the energy consumption of subsequent thermal reactions. Then, after the valve is opened, the large-particle substances are vibrated and fall from the membrane assembly 201 and are blown into a thermal reaction platform in the reactor outer cylinder 101. In this embodiment, the thermal reaction platform preferably uses a heating device 301 and a heat accumulator 401. The heating device 301 can use one or a combination of electric heating, plasma, and natural gas to provide a heat source. The heat accumulator 401 can use one or a combination of silicon and aluminum. The heating device 301 heats the heat accumulator 401 in advance. After the heat accumulator 401 reaches the reaction temperature of the filtrates, the large-particle substances on the upper part of the heat accumulator 401 react, thereby removing pollutants. The purified gas is discharged from the reactor outer cylinder 101 through a gas outlet 601. The residues are discharged from the reactor outer cylinder 101 through a residue outlet 701. In order to facilitate the turning and removal of residues on the heat accumulator 401, a blowing pipe 103 is provided near the heat accumulator 401. The blowing pipe 103 is connected to compressed air. By providing holes on the heat accumulator, the reacted residues are blown by air through their own gravity, thereby falling into the residue outlet and being discharged from the system.

[0035] The liquid inlet pipe 202 and the gas inlet pipe 203 are fixed on the upper part of the membrane assembly 201 through a flange. The membrane assembly 201 is connected and fixed to the reactor inner cylinder 102 through a flange, which facilitates disassembly and installation.

[0036] In the embodiment of the present application, the high solid content wastewater is introduced into the membrane assembly 201 through the inlet pipe 202 by a high pressure pump, small molecules are filtered out of the liquid through the membrane assembly 201, and the large particle substances are intercepted on the inner wall of the membrane assembly 201, at the same time, after the heat reaction platform reaches the reaction temperature, the gas inlet pipe 203 is opened, the water outlet 501 is closed, the high pressure pulse gas is filled into the membrane assembly 201, then the electric valve at the lower part of the membrane assembly 201 is opened, the intercepted large particle substances are sprayed into the upper part of the heat accumulator 401 to react, the purified gas is discharged from the system through the gas outlet 601, the residue after the reaction penetrates through the heat accumulator 401, the residue is discharged from the system by opening the residue outlet 701 valve. In order to accurately detect the reaction temperature and pressure, a plurality of pressure and temperature monitoring ports are arranged on the outer cylinder 101 of the reactor, the openings of the temperature and pressure detection ports are provided with sleeves and flanges to facilitate installation, which has strong practicability, can better realize the solid-liquid separation of industrial wastewater, has low energy consumption, and achieves the purposes of resource utilization and harmless treatment.

[0037] The above description is only the preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. For example, the pulse gas is simply replaced by other high pressure gas or a brush, the structure of the heat reaction platform is simplified or replaced, and the like, any modification, equivalent replacement, improvement and the like within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A high solid content wastewater treatment apparatus, characterized by, The reactor comprises a reactor inner cylinder, a reactor outer cylinder, a tubular membrane assembly, a hot reaction platform under the membrane assembly, a liquid inlet pipe, a water outlet, a gas outlet and a residue outlet. The reactor inner cylinder and the reactor outer cylinder are used to provide a reaction site. The membrane assembly is located in the reactor inner cylinder, and a valve is installed at the end of the membrane assembly to control the discharge of the filtrate from the membrane assembly. The liquid inlet pipe is installed at the inlet end of the membrane assembly, and is used to supply high solid-containing wastewater to the membrane assembly for filtration. The water outlet is located between the reactor inner cylinder and the membrane assembly, and is used to discharge the filtrate from the membrane assembly. The gas outlet is located at the upper part of the reactor outer cylinder, and is used to discharge the reaction gas. The residue outlet is located at the lower part of the reactor outer cylinder, and is used to discharge the reaction residue. The hot reaction platform is located above the residue outlet and below the valve of the membrane assembly, and is used to perform a heating reaction on the filtrate of the membrane assembly.

2. The high solid content wastewater treatment device according to claim 1, wherein: The hot reaction platform comprises a heating device, which uses one or a combination of electric heating, plasma and natural gas to provide a heat source.

3. The high solid content wastewater treatment device according to claim 1 or 2, wherein: The reactor inner cylinder, the reactor outer cylinder and the liquid inlet pipe are made of stainless steel, and the inlet end of the liquid inlet pipe is connected to a high-pressure pump.

4. The high solid content wastewater treatment device according to claim 2, wherein: The hot reaction platform further comprises a heat accumulator made of one or a combination of silicon and aluminum.

5. A high solids wastewater treatment device as claimed in claim 1, 2 or 4, wherein: The hot reaction platform further comprises an air inlet pipe installed at the inlet end of the membrane assembly, which is used to blow the filtrate trapped outside the membrane assembly into the upper part of the hot reaction platform for reaction.

6. The high solid content wastewater treatment device of claim 1, wherein: The valve installed at the end of the membrane assembly is an electric valve or a manual valve with a handle extending to the outside of the reactor outer cylinder.

7. The high solid content wastewater treatment device of claim 1, wherein: The membrane assembly is an inorganic heat-resistant membrane.

8. The high solid content wastewater treatment device according to claim 1, wherein: The reactor inner cylinder and / or the reactor outer cylinder are provided with pressure and temperature monitoring ports, and the openings of the temperature and pressure monitoring ports are designed with a sleeve and a flange.

9. The high solid content wastewater treatment device of claim 1, wherein: The hot reaction platform is further provided with a blowing pipe, which is used to stir and remove the substances on the hot reaction platform.

10. The high solid content wastewater treatment device of claim 5, wherein: The gas of the air inlet pipe is supplied in pulses, and the pulse frequency of the gas is the same as or close to the inherent frequency of the filtrate.

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