Full-automatic sludge system for bar factory

Abstract

The invention discloses a bar factory full-automatic sludge system, the bar factory full-automatic sludge system comprises a horizontal flow sedimentation tank, a hydraulic mixer, an inclined plate precipitator, a sludge adjusting tank, a concentration tank, a sludge tank and a filter press, the horizontal flow sedimentation tank is communicated with the hydraulic mixer, the hydraulic mixer is communicated with the inclined plate precipitator, the sludge adjusting tank is communicated with the sludge tank, and the sludge adjusting tank is communicated with the sludge tank. The inclined plate precipitator is communicated with the sludge adjusting tank, the sludge adjusting tank is communicated with the concentration tank, the concentration tank is communicated with the sludge tank, and the sludge tank is communicated with the filter press; the device has the advantages of automatic operation, high treatment efficiency, thorough pollution discharge, reduction of sludge accumulation, saving of a large amount of manpower and material resources, and saving of a large amount of chemicals through backflow of filtrate and supernate.

Description

Technical Field

[0001] The invention relates to the technical field of sludge treatment systems for rod mills, and in particular to a fully automatic sludge system for rod mills. Background Art

[0002] The existing circulating water system of the bar mill usually produces a large amount of sludge, which needs to be properly treated to prevent environmental pollution. However, the existing sludge treatment methods usually require manual operation, low treatment efficiency, and the treatment quality cannot be guaranteed, resulting in serious sludge accumulation in the system.

[0003] Therefore, a fully automatic sludge system for a bar factory is provided to solve the above problems. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the existing circulating water system of a bar mill usually produces a large amount of sludge, which needs to be properly treated to prevent environmental pollution. However, the existing sludge treatment method usually requires manual operation, has low treatment efficiency, cannot guarantee treatment quality, and has serious sludge accumulation in the system. Therefore, a fully automatic sludge system for a bar mill is provided, and the fully automatic sludge system for a bar mill includes: A horizontal flow sedimentation tank, a hydraulic mixer, an inclined plate sedimentation mechanism, a sludge regulating tank, a thickening tank, a sludge tank and a filter press, wherein the horizontal flow sedimentation tank is connected to the hydraulic mixer, the hydraulic mixer is connected to the inclined plate sedimentation mechanism, the inclined plate sedimentation mechanism is connected to the sludge regulating tank, the sludge regulating tank is connected to the thickening tank, the thickening tank is connected to the sludge tank, and the sludge tank is connected to the filter press; It also includes a first online turbidity monitoring mechanism, which is fixedly installed on the pipeline between the horizontal flow sedimentation tank and the hydraulic mixer. The sludge regulating tank is also connected to the aeration pipeline.

[0005] Furthermore, the hydraulic mixer is provided with a dosing pipeline, and the dosing pipeline is used for adding coagulants and flocculants.

[0006] Furthermore, the inclined plate sedimentation mechanism includes several groups of inclined plate sedimentators, each group of inclined plate sedimentators includes several inclined plate sedimentators, the water inlet pipes of all the inclined plate sedimentators are connected to the water outlet pipes of the hydraulic mixer, the water outlet pipes of all the inclined plate sedimentators in each group are connected to a water outlet main pipe, each of the inclined plate sedimentators is also provided with a sewage pipe, the sewage pipes of all the inclined plate sedimentators are connected to the same sewage main pipe, the water outlet main pipe is connected to an external sewage treatment equipment, the water outlet main pipe is also used to backwash all the inclined plate sedimentators in the group, and each of the water outlet main pipes is provided with a second online turbidity monitoring mechanism.

[0007] Furthermore, the sewage main pipe is connected to the sludge regulating tank, and a third online turbidity monitoring mechanism is provided on the sewage main pipe.

[0008] Furthermore, the aeration pipeline is connected to an external compressed air source, and a liquid level meter is also provided in the sludge regulating tank.

[0009] Furthermore, a concentration meter is provided on the liquid inlet pipe of the concentration tank, an overflow pipe is also provided above the concentration tank, one end of the overflow pipe is connected to the concentration tank, and the other end is connected to the horizontal flow sedimentation tank, and a sludge scraper is provided in the concentration tank.

[0010] Furthermore, it also includes a filtrate return pipe, one end of the filtrate return pipe is connected to the filter press, and the other end is connected to the horizontal flow sedimentation tank.

[0011] Furthermore, a pressure transmitter is provided at the inlet pipe of the filter press, and the pressure transmitter is used to monitor the feed pressure of the filter press.

[0012] The implementation of the present invention has the following beneficial effects: 1. The present invention realizes the full automatic operation of the whole sludge system through a large number of sensors, online monitoring equipment and intelligent control, with high treatment efficiency, thorough sewage discharge, reduced sludge accumulation, and a large amount of manpower and material resources saved. The reflux of filtrate and supernatant can save a large amount of reagents. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a simplified structural diagram of the system of the present invention. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0015] Please refer to the attached drawings of the specification. The technical problem to be solved in this embodiment is that the existing circulating water system of the bar factory usually produces a large amount of sludge, which needs to be properly treated to prevent environmental pollution. However, the existing sludge treatment method usually requires manual operation, low treatment efficiency, and the treatment quality cannot be guaranteed. The system sludge accumulates seriously, so a fully automatic sludge system for a bar factory is provided, and the fully automatic sludge system for a bar factory includes: A horizontal flow sedimentation tank, a hydraulic mixer, an inclined plate sedimentation mechanism, a sludge regulating tank, a thickening tank, a sludge tank and a filter press, the horizontal flow sedimentation tank is connected to the hydraulic mixer, the hydraulic mixer is connected to the inclined plate sedimentation mechanism, the inclined plate sedimentation mechanism is connected to the sludge regulating tank, the sludge regulating tank is connected to the thickening tank, the thickening tank is connected to the sludge tank, and the sludge tank is connected to the filter press; It also includes a first online turbidity monitoring mechanism, which is fixedly installed on the pipeline between the horizontal flow sedimentation tank and the hydraulic mixer. The sludge regulating tank is also connected to the aeration pipeline.

[0016] The hydraulic mixer is provided with a dosing pipeline, which is used for adding coagulants and flocculants.

[0017] The inclined plate sedimentation mechanism includes several groups of inclined plate sedimentators, each group of inclined plate sedimentators includes several inclined plate sedimentators, the water inlet pipes of all inclined plate sedimentators are connected with the water outlet pipes of the hydraulic mixer, the water outlet pipes of all inclined plate sedimentators in each group are connected with a water outlet main pipe, each inclined plate sedimentator is also provided with a sewage pipe, the sewage pipes of all inclined plate sedimentators are connected with the same sewage outlet main pipe, the water outlet main pipe is connected with an external sewage treatment equipment, the water outlet main pipe is also used for backwashing all the inclined plate sedimentators in the group, and each water outlet main pipe is provided with a second online turbidity monitoring mechanism.

[0018] The sewage main pipe is connected with the sludge regulating tank, and a third online turbidity monitoring mechanism is arranged on the sewage main pipe.

[0019] The aeration pipeline is connected to an external compressed air source, and a liquid level meter is also provided in the sludge regulating tank.

[0020] A concentration meter is arranged on the liquid inlet pipe of the concentration tank, and an overflow pipe is arranged above the concentration tank. One end of the overflow pipe is connected to the concentration tank, and the other end is connected to the horizontal flow sedimentation tank. A sludge scraper is arranged in the concentration tank.

[0021] The invention also comprises a filtrate return pipe, one end of which is connected to the filter press, and the other end of which is connected to the horizontal flow sedimentation tank.

[0022] A pressure transmitter is provided at the inlet pipe of the filter press, and the pressure transmitter is used to monitor the feed pressure of the filter press.

[0023] During operation, the turbid circulating water enters the horizontal flow sedimentation tank for sufficient sedimentation, and is then lifted by the lifting pump to the hydraulic mixer. PAC (coagulant) and PAM (flocculant) are added through the dosing pipe of the hydraulic mixer. The inlet pipe of the hydraulic mixer is equipped with an online turbidity monitoring instrument to adjust the dosage according to the turbidity of the inlet water. The hydraulic mixer is equipped with a porous mixing ball to produce a mixed flow reaction on the incoming liquid, and the liquid and the agent are mixed by hydraulic force. After the agent and sewage are fully mixed, they enter the inclined plate sedimentator for flocculation and sedimentation, where a large amount of sludge is produced. The treated clean water is transported to the next process.

[0024] The inclined plate sedimentation mechanism includes several groups of inclined plate sedimentators, each group of inclined plate sedimentators includes several inclined plate sedimentators, and the number of inclined plate sedimentators is set according to the upstream flow rate. For example, the flow rate processed by each inclined plate sedimentator per unit time is 300, and the total upstream flow rate per unit time is 4800, then 16 inclined plate sedimentators are needed, and the 16 inclined plate sedimentators are grouped into 5-6 groups. The inlet pipes of all inclined plate sedimentators are connected to the outlet pipes of the hydraulic mixer, and the outlet pipes of all inclined plate sedimentators in each group are connected to an outlet main pipe. Each inclined plate sedimentator is also provided with a sewage pipe, and the sewage pipes of all inclined plate sedimentators are connected to the same sewage main pipe. The outlet main pipe is connected to the external sewage treatment equipment, and the outlet main pipe is also used to backwash all the inclined plate sedimentators in the group. Each outlet main pipe is provided with a second online turbidity monitoring mechanism The second online turbidity monitoring mechanism monitors the turbidity of the effluent in real time on a group basis. When the turbidity of the effluent is ≥30 NTU, it indicates that the turbidity of the effluent from the inclined plate sedimentation tank of this group is too high and needs to be discharged. At this time, all the inclined plate sedimentation tanks in this group automatically close the outlet valve, open the sewage valve to discharge sewage, and record the sewage discharge time. A sampling tube is installed on the sewage pipe to the online turbidity monitoring instrument to monitor the turbidity of the discharged sewage in real time. When the turbidity is ≤25NTU, the sewage discharge is completed and the sewage valve is automatically closed and the outlet valve is opened.

[0025] The inclined plate settler has an automatic backwashing function: when the sewage discharge time of an inclined plate settler exceeds 2 minutes, the automatic backwashing is turned on after the sewage discharge is completed, the water inlet valve of the inclined plate settler is closed, the water outlet valve and the sewage valve of the inclined plate settler are opened, and the outlet water of other inclined plate settlers in the same group is used to backwash the inside of the inclined plate settler. The backwashing sewage flows out from the sewage pipe of the inclined plate settler, and the turbidity is monitored. When the turbidity is ≤25NTU, the backwashing is completed and normal operation is restored.

[0026] The sewage from the inclined plate sedimentation tank enters the sludge regulating tank. The volume of the sludge regulating tank meets the sewage discharge of the inclined plate sedimentation tank for 24 hours. Compressed air is passed through the bottom of the sludge regulating tank for aeration to prevent the suspended matter in the tank from sinking and strengthen the contact between the organic matter in the tank and the microorganisms and dissolved oxygen, thereby ensuring that the microorganisms in the tank can oxidize and decompose the organic matter in the sewage under the condition of sufficient dissolved oxygen. The sludge regulating tank is equipped with a liquid level gauge to adjust the valve opening of the compressed air intake regulating valve according to the real-time liquid level to save compressed air.

[0027] After the pump start level is met in the sludge regulating tank, the pump is started to lift the sewage to the gravity thickening tank for concentration. A concentration meter is installed on the liquid inlet pipe to monitor the feed concentration. The concentration time is adjusted according to the feed concentration. A scraper is installed in the thickening tank to scrape the mud when there is material. A supernatant overflow pipe is installed above the thickening tank. When the discharge volume of the inclined plate settler is large and the liquid level of the regulating tank is high, continuous concentration can be carried out. Continuous feeding can be carried out, and the upper supernatant in the thickening tank can be returned to the horizontal flow sedimentation tank through the overflow pipe. Under the action of gravity and the scraper, the concentrated mud flows to the sludge tank below and is lifted to the filter press for filtration. After filtration, the mud cake is recycled and the filtrate is returned to the horizontal flow sedimentation tank. The filtrate and the supernatant of the thickening tank still contain oil residual agents, which can be returned to the horizontal flow sedimentation tank for recycling.

[0028] In particular, the feed port of the concentration tank should be set at the bottom of the concentration tank, which is conducive to concentration and sedimentation and overflow of the supernatant.

[0029] A pressure transmitter is installed on the inlet pipe of the filter press to monitor the feed pressure of the filter press in real time. When the pressure reaches the lift of the lifting pump, it indicates that the material is full. The feed pump and the feed valve are closed, and compressed air is passed into the filter plate for backblowing until no water comes out. Automatic unloading begins, and the mud cake after filtration is recycled.

[0030] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fully automatic sludge system for a bar factory, characterized in that: include: A horizontal flow sedimentation tank, a hydraulic mixer, an inclined plate sedimentation mechanism, a sludge regulating tank, a thickening tank, a sludge tank and a filter press, wherein the horizontal flow sedimentation tank is connected to the hydraulic mixer, the hydraulic mixer is connected to the inclined plate sedimentation mechanism, the inclined plate sedimentation mechanism is connected to the sludge regulating tank, the sludge regulating tank is connected to the thickening tank, the thickening tank is connected to the sludge tank, and the sludge tank is connected to the filter press; It also includes a first online turbidity monitoring mechanism, which is fixedly installed on the pipeline between the horizontal flow sedimentation tank and the hydraulic mixer. The sludge regulating tank is also connected to the aeration pipeline.

2. The fully automatic sludge system for a bar mill according to claim 1 is characterized in that: The hydraulic mixer is provided with a dosing pipeline, and the dosing pipeline is used for adding coagulant and flocculant.

3. The fully automatic sludge system for a bar mill according to claim 2 is characterized in that: The inclined plate sedimentation mechanism includes several groups of inclined plate sedimentators, each group of inclined plate sedimentators includes several inclined plate sedimentators, the water inlet pipes of all the inclined plate sedimentators are connected to the water outlet pipes of the hydraulic mixer, the water outlet pipes of all the inclined plate sedimentators in each group are connected to a water outlet main pipe, each of the inclined plate sedimentators is also provided with a sewage pipe, the sewage pipes of all the inclined plate sedimentators are connected to the same sewage main pipe, the water outlet main pipe is connected to an external sewage treatment equipment, the water outlet main pipe is also used to backwash all the inclined plate sedimentators in the group, and each of the water outlet main pipes is provided with a second online turbidity monitoring mechanism.

4. The fully automatic sludge system for a bar mill according to claim 3 is characterized in that: The sewage main pipe is connected to the sludge regulating tank, and a third online turbidity monitoring mechanism is arranged on the sewage main pipe.

5. The fully automatic sludge system for a bar mill according to claim 4 is characterized in that: The aeration pipeline is connected to an external compressed air source, and a liquid level meter is also arranged in the sludge regulating tank.

6. The fully automatic sludge system for a bar mill according to claim 5 is characterized in that: A concentration meter is arranged on the liquid inlet pipe of the concentration tank, an overflow pipe is arranged above the concentration tank, one end of the overflow pipe is connected to the concentration tank, and the other end is connected to the horizontal flow sedimentation tank, and a sludge scraper is arranged in the concentration tank.

7. The fully automatic sludge system for a bar mill according to claim 6 is characterized in that: It also includes a filtrate return pipeline, one end of which is connected to the filter press, and the other end of which is connected to the horizontal flow sedimentation tank.

8. The fully automatic sludge system for a bar mill according to claim 7 is characterized in that: A pressure transmitter is provided at the inlet pipe of the filter press, and the pressure transmitter is used to monitor the feed pressure of the filter press.

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