Wastewater sludge treatment system

Abstract

The utility model provides a wastewater sludge treatment system which comprises a conveyor, a reaction tank, a dosing tank, a rotary screen, a filter press, a mud tank and a water storage tank, the conveyor and the dosing tank are respectively connected with the reaction tank, the outlet end of the reaction tank is connected with the inlet end of the drum screen, the outlet end of the drum screen is connected with the inlet end of the mud tank, the outlet end of the mud tank is connected with the filter press, and the water storage tank is respectively connected with the filter press, the drum screen and the mud tank. The utility model further discloses a wastewater sludge treatment method which comprises the following steps: conveying wastewater sludge into the reaction tank by adopting the conveyor, carrying out chemical reaction, then carrying out dry-wet separation, and respectively treating dry and wet; the method is green, low-carbon, economical, efficient, convenient to implement, low in operation cost and stable and reliable in treatment effect.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater sludge treatment, in particular to a wastewater sludge treatment system. Background Art

[0002] Medical wastewater sludge contains a variety of components such as organic matter, inorganic matter, and microorganisms, and has dangerous characteristics such as biological pathogenicity and chemical toxicity. In the process of treating medical wastewater sludge, due to the industry specificity of medical wastewater, the wastewater sludge produced in the wastewater treatment process contains a large number of bacteria, viruses, and parasite eggs, which are infectious and harmful. Since the "National Hazardous Waste Management List" and the "Medical Waste Classification Catalog" do not classify and describe medical wastewater sludge, enterprises do not have certain treatment standards for medical wastewater sludge treatment. Medical wastewater sludge has been accumulated in wastewater sludge concentration tanks for a long time and cannot be properly disposed of. Even if medical wastewater sludge can be treated, it cannot be treated safely and efficiently due to the lack of a better treatment system and process. It is easy to cause pollution to the surrounding environment during the treatment process, and there are safety hazards. Utility Model Content

[0003] Therefore, one purpose of the utility model is to provide a wastewater sludge treatment system to solve the problems mentioned in the background technology and overcome the deficiencies in the prior art.

[0004] The utility model discloses a wastewater sludge treatment system, comprising a conveyor, a reaction tank, a dosing tank, a drum screen, a filter press, a mud tank and a water storage tank; the conveyor and the dosing tank are respectively connected to the reaction tank, the outlet end of the reaction tank is connected to the inlet end of the drum screen, the outlet end of the drum screen is connected to the inlet end of the mud tank, the outlet end of the mud tank is connected to the filter press, and the water storage tank is respectively connected to the filter press, the drum screen and the mud tank.

[0005] Preferably, the filter press comprises a frame, a plate pulling track, a plate pulling trolley, an electric control cabinet and a hydraulic cylinder, the frame is provided with a plate pulling track, the plate pulling trolley is provided on the plate pulling track, and the electric control cabinet is connected to the hydraulic cylinder.

[0006] Preferably, in any of the above schemes, a carton turner is further included, the conveyor is connected to the carton turner, and a nozzle is provided in the carton turner.

[0007] Preferably, in any of the above schemes, a cleaning unit is further included, the cleaning unit includes a high-pressure water pump and a cleaning nozzle, the high-pressure water pump is connected to the cleaning nozzle, and the cleaning nozzle is arranged inside the reaction tank.

[0008] In any of the above schemes, preferably, the reaction tank is provided with a liquid level meter, a pH sensor and a temperature sensor.

[0009] In any of the above schemes, it is preferred that a negative pressure deodorization system and a stirring device are provided in the reaction tank.

[0010] In any of the above schemes, it is preferred that a caustic soda flake feeding tank is further included, and the caustic soda flake feeding tank is connected to the reaction tank.

[0011] Preferably, any of the above schemes further comprises a heating and heat preservation system, wherein the heating and heat preservation system comprises a heating pipe, and the heating pipe is attached to the outer surface of the reaction tank.

[0012] The utility model also discloses a wastewater sludge treatment method, which utilizes any of the above wastewater sludge treatment systems and comprises the following steps:

[0013] Step S1: adding a certain amount of water into the reaction tank according to a set amount;

[0014] Step S2: After the water is added, the heating and heat preservation system is turned on to control the temperature in the reaction tank according to the set temperature;

[0015] Step S3: Start the negative pressure deodorization system and the stirring device, and the stirring device starts stirring.

[0016] Step S4: The conveyor weighs the wastewater sludge and conveys it to the reaction tank, the dosing tank adds the reagent to the wastewater sludge, and the caustic soda adding tank adds caustic soda solution to the reaction tank;

[0017] Step S5: After the wastewater sludge is added to the reaction tank, the timing starts. When the set time is reached, the wastewater sludge is transported to the drum screen for screening, and the screened wastewater sludge is discharged into the mud tank;

[0018] Step S6: The wastewater sludge in the slurry tank is transported to the filter press, and the filter press concentrates and dehydrates the wastewater sludge and then discharges it.

[0019] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0020] 1. The wastewater sludge treatment system of the utility model transports the wastewater sludge to the reaction tank to fully react with other reagents. The reaction control is safer. The wastewater sludge is processed by the drum screen and the filter press. The treatment is simple and efficient, with a high degree of automation and little pollution to the surrounding environment.

[0021] 2. The wastewater sludge treatment system of the utility model filters the wastewater sludge through a drum screen and then passes it through a filter press to press the wastewater sludge into a cake shape, and then transports it to an incineration plant for incineration treatment, thereby achieving dry and wet separation of the wastewater sludge for separate treatment, which is safer.

[0022] 3. The wastewater sludge treatment method of the utility model adopts a conveyor to transport the wastewater sludge to a reaction tank for chemical reaction first, and then separates the dry and wet parts, and treats the dry and wet parts separately; it is green and low-carbon, economical and efficient, easy to implement, low in operating costs, and has stable and reliable treatment effects.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 It is a schematic diagram of the structure of a wastewater sludge treatment system according to an embodiment of the utility model;

[0026] Figure 2 A schematic diagram of the process structure of a wastewater sludge treatment system according to an embodiment of the utility model;

[0027] Figure 3 The present invention is a schematic diagram of the structure of a filter press in a wastewater sludge treatment system according to an embodiment of the present invention.

[0028] Among them: 1- conveyor; 2- reaction tank; 3- dosing tank; 4- drum screen; 5- filter press; 6- mud tank; 7- water storage tank; 8- frame; 9- pull plate track; 10- pull plate trolley; 11- electric control cabinet; 12- hydraulic cylinder; 13- box turner; 14- level meter; 15- PH value sensor; 16- temperature sensor; 17- stirring device; 18- flake caustic soda dosing tank; 19- heating pipe. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0030] like Figure 1 and Figure 2 As shown, a wastewater sludge treatment system according to an embodiment of the utility model includes a conveyor 1, a reaction tank 2, a dosing tank 3, a drum screen 4, a filter press 5, a mud tank 6 and a water storage tank 7.

[0031] The conveyor 1 and the dosing tank 3 are respectively connected to the reaction tank 2, the outlet end of the reaction tank 2 is connected to the inlet end of the drum screen 4, the outlet end of the drum screen 4 is connected to the inlet end of the mud tank 6, the outlet end of the mud tank 6 is connected to the filter press 5, and the water storage tank 7 is respectively connected to the filter press 5, the drum screen 4 and the mud tank 6.

[0032] The conveyor 1 of the utility model is also provided with a weighing device. The wastewater sludge on the conveyor 1 is weighed and then input into the reaction tank 2, so as to reasonably control the dosage of the wastewater sludge. The conveyor 1 transports the wastewater sludge into the reaction tank 2, and the wastewater sludge in the reaction tank 2 is fully reacted with the medicine added into the reaction tank 2 before being output. The outputted wastewater sludge is screened through the drum screen 4. A pneumatic diaphragm pump is provided between the reaction tank 2 and the drum screen 4. The pneumatic diaphragm pump transports the wastewater in the reaction tank 2 through a pipeline to the drum screen 4 for screening. The medical wastewater sludge after disinfection is pumped into the drum screen 4 through the pneumatic diaphragm pump. Under the action of the screen, the drum screen 4 screens the wastewater sludge. The drum screen 4 filters larger solid wastes and removes larger solid wastes, providing favorable conditions for the next process. The screened medical wastewater sludge is discharged into the mud tank 6 for subsequent treatment. The filtered wastewater sludge is transported to the slurry tank, and the wastewater sludge in the slurry tank 6 is then discharged into the filter press to squeeze out the water in the sludge. The production wastewater inside the sludge room is mainly the clear liquid compressed by the filter press 5, etc., which all enter the treatment system through the factory drainage channel without generating new pollution. Finally, the dry cake-like sludge is sent to the incineration plant for incineration.

[0033] The water storage tank 7 provides water required in the processing or cleaning process for the drum screen 4, the mud tank 6 and the filter press 5. A pneumatic diaphragm pump is arranged between the mud tank 6 and the filter press 5.

[0034] The wastewater sludge treatment system of the utility model transports the wastewater sludge to the reaction tank 2 to fully react with other reagents, and the reaction control is safer. The wastewater sludge is processed by the drum screen 4 and the filter press 5, and the treatment is simple and efficient, with a high degree of automation and little pollution to the surrounding environment.

[0035] like Figure 3 As shown, the filter press 5 includes a frame 8, a plate pulling track 9, a plate pulling trolley 10, an electric control cabinet 11 and a hydraulic cylinder 12. The frame 8 is provided with a plate pulling track 9, the plate pulling track 9 is provided with a plate pulling trolley 10, the electric control cabinet 11 is connected to the hydraulic cylinder 12, the plate pulling trolley 10 pulls the wastewater sludge to the bottom of the hydraulic cylinder 12, and the hydraulic cylinder 12 squeezes the sludge.

[0036] Furthermore, it also includes a carton turner 13, the conveyor 1 is connected to the carton turner 13, and a nozzle is arranged in the carton turner 13.

[0037] Considering that the sludge is not easy to pour out due to its viscosity, a high nozzle is added at the position where the box tipper 13 tipps the box to flush the sludge material, preferably a high-pressure nozzle.

[0038] After the box turning machine 13 puts the sludge into the reaction tank 2, the box turning machine 13 moves in the reverse direction, and the empty boxes are returned to be collected and placed.

[0039] Furthermore, a cleaning unit is also included, and the cleaning unit is connected to the reaction tank 2. After the treatment is completed, the cleaning unit cleans the wastewater sludge remaining in the reaction tank 2. The cleaning unit includes a high-pressure water pump and a cleaning nozzle connected to the high-pressure water gun, and the cleaning nozzle is arranged inside the reaction tank 2, and preferably the cleaning nozzle is arranged on the top of the reaction tank 2.

[0040] Optionally, the reaction tank 2 is provided with a liquid level meter 14 , a pH value sensor 15 and a temperature sensor 16 to measure relevant parameters in the reaction tank 2 respectively.

[0041] Specifically, the reaction tank 2 is provided with a negative pressure deodorization system and a stirring device 17. The negative pressure deodorization system is preferably a waste negative pressure deodorization device, and the stirring device 17 stirs the wastewater sludge in the reaction tank 2 to fully mix it with the reagent.

[0042] Further, it also includes a caustic soda feeding tank 18, which is connected to the reaction tank 2. The caustic soda feeding tank 18 is filled with caustic soda, which can be used for disinfection, deodorization, rust prevention, etc., and is added to the reaction tank 2 to mix with wastewater sludge.

[0043] Optionally, a heating and heat preservation system is also included, and the heating and heat preservation system is arranged on the reaction tank 2. The heating and heat preservation system includes a heating pipe 19, and the heating pipe 19 is fitted around the outer surface of the reaction tank 2. Steam is filled in the heating pipe 19 to heat the reaction tank 2 and control the temperature. The connection of the above tank bodies is connected through a pipeline, and a solenoid valve is arranged on the pipeline to control the flow rate of the medium, and a flow meter can also be arranged on the pipeline to monitor the flow rate.

[0044] It also includes a PLC control system, which is used to control the entire process and monitor the parameters of each process.

[0045] The utility model also discloses a wastewater sludge treatment method, which adopts the above-mentioned sludge treatment system and comprises the following steps:

[0046] Step S1: adding a certain amount of water into the reaction tank according to a set amount;

[0047] Step S2: After the water is added, the heating and heat preservation system is turned on to control the temperature in the reaction tank according to the set temperature;

[0048] Step S3: Start the negative pressure deodorization system and the stirring device, and the stirring device starts stirring.

[0049] Step S4: The conveyor weighs the wastewater sludge and conveys it to the reaction tank, the dosing tank adds the reagent to the wastewater sludge, and the caustic soda adding tank adds caustic soda solution to the reaction tank;

[0050] The powder and caustic soda flake solution are added in proportion to the sludge weight.

[0051] Step S5: After the wastewater sludge is added to the reaction tank, the timing starts. When the set time is reached, the wastewater sludge is transported to the drum screen for screening, and the screened wastewater sludge is discharged into the mud tank;

[0052] The disinfected medical waste sludge is pumped into the drum screen filter through a pneumatic diaphragm pump. Under the action of the screen, larger solid waste is removed, providing favorable conditions for the next process; the screened medical waste sludge is discharged into the mud tank and waits for subsequent treatment.

[0053] Step S6: The wastewater sludge in the slurry tank is transported to the filter press, and the filter press concentrates and dehydrates the wastewater sludge and then discharges it.

[0054] The medical waste sludge in the mud tank is transported to the filter press through a pneumatic diaphragm pump, and its volume is reduced through the concentration and dehydration effect of the filter press. The filter cake is regularly transported to the incineration plant for incineration treatment.

[0055] When the processing is completed, the residue inside the reaction tank is cleaned by the cleaning unit. After the cleaning time is over, the discharge electric valve opens, the cleaning wastewater is discharged, the cleaning is completed, and a process flow is completed.

[0056] The utility model relates to a wastewater sludge treatment method, which uses a conveyor to convey the wastewater sludge to a reaction tank for chemical reaction first, and then separates the dry and wet parts, and treats the dry and wet parts separately; the utility model is green, low-carbon, economical and efficient, easy to implement, low in operating cost, and has stable and reliable treatment effect.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] It is not difficult for those skilled in the art to understand that the utility model includes any combination of the utility model content and the specific implementation method part of the above specification and the various parts shown in the drawings. Due to the limited space and to make the specification concise, the various schemes composed of these combinations are not described one by one. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

[0059] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wastewater sludge treatment system, characterized in that: Including conveyors, reaction tanks, dosing tanks, drum screens, filter presses, mud tanks and water storage tanks; The conveyor and the dosing tank are respectively connected to the reaction tank, the outlet end of the reaction tank is connected to the inlet end of the drum screen, the outlet end of the drum screen is connected to the inlet end of the mud tank, the outlet end of the mud tank is connected to the filter press, and the water storage tank is respectively connected to the filter press, the drum screen and the mud tank.

2. A wastewater sludge treatment system as claimed in claim 1, characterized in that: The filter press comprises a frame, a plate pulling track, a plate pulling trolley, an electric control cabinet and a hydraulic cylinder. The frame is provided with the plate pulling track, the plate pulling trolley is provided on the plate pulling track, and the electric control cabinet is connected to the hydraulic cylinder.

3. A wastewater sludge treatment system as claimed in claim 2, characterized in that: It also includes a box turning machine, the conveyor is connected to the box turning machine, and a nozzle is arranged in the box turning machine.

4. A wastewater sludge treatment system as claimed in claim 3, characterized in that: It also includes a cleaning unit, which includes a high-pressure water pump and a cleaning nozzle. The high-pressure water pump is connected to the cleaning nozzle, and the cleaning nozzle is arranged inside the reaction tank.

5. A wastewater sludge treatment system as claimed in claim 4, characterized in that: The reaction tank is provided with a liquid level meter, a pH value sensor and a temperature sensor.

6. A wastewater sludge treatment system as claimed in claim 5, characterized in that: The reaction tank is provided with a negative pressure deodorization system and a stirring device.

7. A wastewater sludge treatment system as claimed in claim 6, characterized in that: It also comprises a caustic soda flake feeding tank, which is connected to the reaction tank.

8. A wastewater sludge treatment system as claimed in claim 7, characterized in that: It also includes a heating and heat preservation system, which includes a heating pipe, and the heating pipe is attached to the outer surface of the reaction tank.

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