CN215712407U

CN215712407U - Novel magnetic medium coagulating sedimentation system

Info

Publication number: CN215712407U
Application number: CN202120937568.1U
Authority: CN
Inventors: 唐宇; 李庸全; 鲁鸿; 宋兴堂
Original assignee: Chengdu Huanneng Demei Environmental Protection Equipment Manufacturing Co ltd
Current assignee: Chengdu Huanneng Demei Environmental Protection Equipment Manufacturing Co ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2022-02-01
Anticipated expiration: 2031-04-30

Abstract

The utility model provides a novel magnetic medium coagulating sedimentation system, which comprises a wastewater conditioning unit, a sludge sedimentation unit and a magnetic medium recovery unit, wherein the wastewater conditioning unit comprises a coagulating reaction device for conditioning wastewater, the sludge sedimentation unit comprises a sedimentation device for separating sludge, the coagulating reaction device is communicated with the sedimentation device, the magnetic medium recovery unit comprises a magnetic mud pump, a magnetic mud pipe and a magnetic recovery device for separating magnetic medium, the magnetic mud pump is arranged in the magnetic mud pipe, one end of the magnetic mud pipe is communicated with a sludge outlet of the sedimentation device, the other end of the magnetic mud pipe is connected with a three-way valve, the three-way valve is connected with a return sludge pipe and a residual sludge pipe, the return sludge pipe is communicated with the coagulating reaction device, the residual sludge pipe is communicated with the magnetic recovery device, the return sludge pipe is provided with a return valve and a return electromagnetic flowmeter, and the residual sludge pipe is provided with a residual valve and a residual electromagnetic flowmeter, the utility model adopts the single magnetic mud pump to recover the magnetic mud, and has the characteristics of low energy consumption and low maintenance.

Description

Novel magnetic medium coagulating sedimentation system

Technical Field

The utility model relates to the technical field of sewage treatment devices, in particular to a novel magnetic medium coagulating sedimentation system.

Background

At present, domestic water pollution is increasingly serious, and water pollution treatment processes are more and mature. The magnetic coagulation sedimentation technology is increasingly applied in the fields of deep phosphorus removal of wastewater, heavy metal wastewater treatment, black odor river treatment and the like in recent years, and particularly in sewage upgrading transformation, the magnetic coagulation sedimentation technology occupies small area, has high treatment efficiency and is widely used.

When sludge is subjected to backflow recovery treatment in the mainstream process of the magnetic medium coagulating sedimentation tank at present, two modes are generally adopted, the first mode is that a sludge backflow pump is adopted to ensure the concentration of pollutants in a system, and meanwhile, a residual sludge pump is adopted to discharge the pollutants, 2 pumps are used in total, so that the equipment cost is high, and the operation cost and fault points are increased; the second is to adopt a flow divider or a swirler to divide the discharged sludge, so that the inherent cost of equipment is increased, and meanwhile, the flow of the divided flow cannot be effectively controlled, so that the fluctuation of the content of pollutants in the system is easily caused to influence the quality of the discharged water; meanwhile, due to the density difference between the magnetic powder and the mud, the magnetic powder is easy to accumulate when the shunt or the cyclone operates, and the mud is excessively discharged, so that the actual real magnetic mud backflow amount can not be judged according to the flow.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel magnetic medium coagulating sedimentation system to solve the problems in the background technology.

The embodiment of the utility model is realized by the following technical scheme: a novel magnetic medium coagulating sedimentation system, which comprises a wastewater conditioning unit, a sludge sedimentation unit and a magnetic medium recovery unit, the wastewater conditioning unit comprises a coagulation reaction device for conditioning wastewater, the sludge precipitation unit comprises a precipitation device for separating sludge, the coagulation reaction device is communicated with the precipitation device, the magnetic medium recovery unit comprises a magnetic sludge pump, a magnetic sludge pipe and a magnetic recovery device for separating magnetic media, the magnetic sludge pump is arranged on the magnetic sludge pipe, one end of the magnetic mud pipe is communicated with a mud outlet of the sedimentation device, the other end of the magnetic mud pipe is connected with a three-way valve, the three-way valve is connected with a return sludge pipe and a residual sludge pipe, the return sludge pipe is communicated with the coagulation reaction device, the residual sludge pipe is communicated with the magnetic recovery device, the return sludge pipe is provided with a return valve and a return electromagnetic flowmeter, and the residual sludge pipe is provided with a residual valve and a residual electromagnetic flowmeter.

The excess sludge pipe is also provided with an electric throttle valve.

Coagulation reaction unit includes magnetic medium coagulation reaction case, disposes first stirring pond and the second stirring pond of mutual intercommunication in the magnetic medium coagulation reaction case, and second stirring pond is linked together with the sediment device, dispose folded plate reaction area in the first stirring pond, dispose a plurality of baffling boards that are used for the vortex in the folded plate reaction area, this folded plate reaction area bottom disposes the inlet tube, and the inlet tube disposes water inlet electromagnetic flowmeter, and folded plate reaction area top and first stirring pond are linked together.

Waste water quenching and tempering unit still includes PAC preparation facilities and the first PAM preparation facilities that is used for preparing the medicament, PAC preparation facilities disposes the PAC measuring pump, and the PAC measuring pump passes through PAC and adds the pencil and connect folded plate reaction zone, first PAM preparation facilities disposes first PAM measuring pump, and first PAM measuring pump adds the pencil through first PAM and connects first stirring pond.

Dispose draft tube agitating unit in the second stirring pond, draft tube agitating unit includes agitator motor, (mixing) shaft and draft tube, agitator motor disposes in second stirring pond top, and agitator motor's drive end is connected the (mixing) shaft, and agitator motor's one end is kept away from to the (mixing) shaft is located second stirring pond bottom and is connected the draft tube.

The sedimentation device comprises a magnetic medium sedimentation tank, a water outlet pipe is arranged at the top of the magnetic medium sedimentation tank, a sludge outlet is arranged at the bottom of the magnetic medium sedimentation tank, maintenance pipe fittings are arranged at the bottoms of the magnetic medium sedimentation tank and the magnetic medium coagulation reaction box, and each maintenance pipe fitting comprises a maintenance emptying port and an emptying pipe which are sequentially arranged from top to bottom.

The device also comprises a sludge dewatering unit, wherein the sludge dewatering unit comprises a sludge buffer tank, a dewatering machine, a sludge pump and a second PAM preparation device; the magnetic recovery device is connected with the sludge buffer tank through a first sludge pipeline, the bottom of the sludge buffer tank is connected with the sludge dewatering machine through a second sludge pipeline, the sludge pump is arranged in a second sludge pipeline, the second PAM preparation device is provided with a second PAM metering pump, and the second PAM metering pump is connected with the sludge dewatering machine through a second PAM dosing pipe.

And a liquid level meter is arranged in the sludge buffer tank.

The device is characterized by further comprising a skid-mounted base, wherein the wastewater conditioning unit, the sludge precipitation unit and the magnetic medium recovery unit are mounted on the skid-mounted base in a skid-mounted mode.

The technical scheme of the embodiment of the utility model at least has the following advantages and beneficial effects:

(1) the utility model realizes the purpose of shunting and recycling the sludge by only using one pump (magnetic sludge pump), reduces the cost of equipment, and reduces the operation cost and fault points; through backward flow electromagnetic flowmeter and return valve, realized the regulation and control to mud flow in the return sludge pipe, guaranteed to get into the balance of mud volume in the coagulation reaction device, through residual valve and residual electromagnetic flowmeter, realized the regulation and control to mud flow in the residual sludge pipe, judge actual magnetism recovery unit's magnetic mud backward flow volume through its mud flow size.

(2) The utility model can realize remote flow regulation and simultaneously play a role in flow protection to prevent excess sludge from overflowing through the automatic control of the joint operation of the reflux electromagnetic flowmeter, the residual electromagnetic flowmeter and the electric throttle valve.

(3) According to the utility model, the second-stage stirring is realized by arranging the folded plate reaction zone, the mixing of the PAC medicament and the sewage is accelerated by the turbulence effect of the baffle plate in the folded plate reaction zone, and compared with the mode of adding medicament and carrying out third-stage stirring by using a pipeline mixer, the cost is saved, the reaction effect is good, and the overall structure degree of the equipment is high.

(4) According to the utility model, by configuring the maintenance pipe group, when the debugging period or the equipment is shut down and restarted due to operation failure, if the produced sewage which does not reach the standard is directly discharged through the emptying pipe, a large amount of magnetic powder in the system is lost. And through the sewage sedimentation of standing in the system, then adopt the maintenance evacuation mouth to discharge upper portion clear water only, and then kept magnetic in the system, avoided the condition of magnetic powder loss in a large number in the system to take place.

(5) The skid-mounted type automatic treatment device is arranged by adopting a skid-mounted structure, so that the whole integration level of the device is high, the transportation is convenient, the occupied area is small, and the treatment efficiency is high.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural diagram of a magnetic medium coagulation reaction box according to the present invention;

FIG. 3 is a top view of example 2 of the present invention;

FIG. 4 is a side view of example 2 of the present invention;

icon: 1-magnetic medium coagulation reaction box, 11-first stirring tank, 12-second stirring tank, 121-stirring motor, 122-stirring shaft, 123-guide cylinder, 13-folded plate reaction zone, 131-baffle plate, 132-water inlet pipe, 133-water inlet electromagnetic flowmeter, 2-precipitation device, 31-magnetosludge pump, 32-magnetosludge pipe, 33-magnetic recovery device, 34-three-way valve, 35-return sludge pipe, 351-return valve, 352-return electromagnetic flowmeter, 36-residual sludge pipe, 361-residual valve, 362-residual electromagnetic flowmeter, 363-electric throttle valve, 41-PAC preparation device, 411-PAC metering pump, 412-PAC dosing pipe, 42-first PAM preparation device, 421-first PAM metering pump, 422-a first PAM dosing pipe, 51-a magnetic medium sedimentation tank, 511-a water outlet pipe, 512-a sludge outlet, 513-an overhaul evacuation port, 514-an evacuation pipe, 52-an inclined plate, 61-a sludge buffer tank, 611-a liquid level meter, 62-a dehydrator, 63-a sludge pump, 64-a second PAM preparation device, 641-a second PAM metering pump, 642-a second PAM dosing pipe, 65-a first sludge pipeline, 66-a second sludge pipeline, 7-a skid-mounted base and 71-an electric control cabinet.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of this application is used, the description is merely for convenience and simplicity of description, and it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

Referring to fig. 1 to 2, the present embodiment provides a novel magnetic medium coagulating sedimentation system, including a wastewater conditioning unit, a sludge sedimentation unit, a magnetic medium recovery unit, and a sludge dewatering unit, where the wastewater conditioning unit includes a coagulating reaction device for wastewater conditioning, the sludge sedimentation unit includes a sedimentation device 2 for separating sludge, and the coagulating reaction device is communicated with the sedimentation device 2.

The magnetic medium recovery unit comprises a magnetic sludge pump 31, a magnetic sludge pipe 32 and a magnetic recovery device 33 for separating magnetic media, wherein the magnetic sludge pump 31 is configured on the magnetic sludge pipe 32, one end of the magnetic sludge pipe 32 is communicated with a sludge outlet 512 of the sedimentation device 2, the other end of the magnetic sludge pipe 32 is connected with a three-way valve 34, the three-way valve 34 is connected with a return sludge pipe 35 and a residual sludge pipe 36, the return sludge pipe 35 is communicated with the coagulation reaction device, and the residual sludge pipe 36 is communicated with the magnetic recovery device 33; the sludge separated by the sedimentation device 2 is pumped out of the sedimentation device 2 by a magnetic sludge pump 31; after passing through the magnetic sludge pump 31, the sludge is shunted through a three-way valve 34, one part of the sludge flows into a return sludge pipe 35 and flows into a coagulation reaction device as return sludge, so that the concentration of the sludge in the system is balanced, the other part of the sludge flows into a residual sludge pipe 36 and enters a magnetic recovery device 33 for magnetic sludge separation, and the recovered magnetic powder falls into the coagulation reaction device by gravity to supplement the magnetic powder; the return sludge pipe 35 is provided with a return valve 351 and a return electromagnetic flowmeter 352, and the residual sludge pipe 36 is provided with a residual valve 361 and a residual electromagnetic flowmeter 362; by configuring the reflux electromagnetic flowmeter 352 and the reflux valve 351, the reflux electromagnetic flowmeter 352 monitors the sludge flow in the reflux sludge pipe 35, and the reflux valve 351 is adjusted by the sludge flow detected by the reflux electromagnetic flowmeter 352, so that the control of the reflux sludge amount is realized; the residual valve 361 and the residual electromagnetic flowmeter 362 are configured, the residual electromagnetic flowmeter 362 realizes monitoring of the sludge flow in the residual sludge pipe 36, and the residual valve 361 is adjusted through the sludge flow detected by the residual electromagnetic flowmeter 362, so that the control of the sludge entering the magnetic recovery device 33 is realized; compared with two commonly used sludge backflow modes, the two pumps are adopted to respectively perform backflow control on the backflow sludge pipe 35 and the excess sludge pipe 36, and the pump is matched with the current mode of a flow divider or a swirler, so that the aim of realizing the flow dividing recycling of sludge by only using one pump (the magnetic sludge pump 31) is fulfilled, the cost of equipment is reduced, the adjustment control on the sludge flow in the backflow sludge pipe 35 is realized through the backflow electromagnetic flow meter 352 and the backflow valve 351, the balance of the sludge amount entering the coagulation reaction device is ensured, the adjustment control on the sludge flow in the excess sludge pipe 36 is realized through the excess valve 361 and the residual electromagnetic flow meter 362, and the magnetic sludge backflow amount of the actual magnetic recovery device 33 is judged according to the sludge flow amount; furthermore, the excess sludge pipe 36 is also provided with an electric throttle valve 363, the electric control system of the embodiment carries a PLC and remote control of the internet of things, and the system can be remotely monitored and controlled through a cloud platform. The reflux electromagnetic flow meter 352, the residual electromagnetic flow meter 362, the magnetic mud pump 31 and the electric throttle valve 363 are all connected with a PLC (programmable logic controller), theoretical calculation values are preset in the PLC, and when the residual electromagnetic flow meter 362 or the reflux electromagnetic flow meter 352 displays that the data deviation is more than 20%, the system gives an alarm; meanwhile, when the magnetor pump 31 is abnormal or the return sludge pipe 35 is blocked, the sludge amount at the residual sludge pipe 36 is increased to cause overflow at the magnetic recovery device 33, therefore, when the deviation of the flow data detected by the residual electromagnetic flowmeter 362 is greater than 10%, the opening of the electric throttle valve 363 is automatically adjusted until the flow is less than 10%, meanwhile, an operator can remotely adjust the sludge amount of the magnetor pump 31 through PLC control according to the inflow water flow, and the electric throttle valve 363 is controlled and adjusted to reach the theoretical return magnetic sludge value through the values of the residual electromagnetic flowmeter 362 and the return electromagnetic flowmeter 352, so that the integral operation of the device is effectively guaranteed. And further realizes remote automatic monitoring and control.

The coagulation reaction device comprises a magnetic medium coagulation reaction box 1, a first stirring tank 11 and a second stirring tank 12 which are mutually communicated are arranged in the magnetic medium coagulation reaction box 1, the second stirring tank 12 is communicated with a precipitation device 2, a folded plate reaction area 13 is arranged in the first stirring tank 11, a plurality of baffle plates 131 for turbulent flow are arranged in the folded plate reaction area 13, a water inlet pipe 132 is arranged at the bottom of the folded plate reaction area 13, a water inlet electromagnetic flow meter 133 is arranged on the water inlet pipe 132, and the water inlet electromagnetic flow meter 133 is connected with a PLC (programmable logic controller) so as to know the water inlet amount of the water inlet pipe 132 for monitoring; the top of the folded plate reaction area 13 is communicated with the first stirring pool 11.

The wastewater conditioning unit further comprises a PAC preparation device 41 and a first PAM preparation device 42, wherein the PAC preparation device 41 is used for preparing medicaments, the PAC preparation device 41 is provided with a PAC metering pump 411, the PAC metering pump 411 is connected with the folded plate reaction zone 13 through a PAC dosing pipe 412, and liquid medicine prepared by the PAC preparation device 41 flows into the folded plate reaction zone 13 from the PAC dosing pipe 412 under the driving force of the PAC metering pump 411; first PAM preparation facilities 42 disposes first PAM measuring pump 421, and first PAM measuring pump 421 connects first stirring pond 11 through first PAM dosing pipe 422, and the liquid medicine of preparing through first PAM preparation facilities 42 flows into first stirring pond 11 from first PAM dosing pipe 422 under the power drive of first PAM measuring pump 421.

A draft tube 123 stirring device is configured in the second stirring tank 12, the draft tube 123 stirring device includes a stirring motor 121, a stirring shaft 122 and a draft tube 123, the stirring motor 121 is configured at the top of the second stirring tank 12, the driving end of the stirring motor 121 is connected with the stirring shaft 122, one end of the stirring shaft 122, which is far away from the stirring motor 121, is located at the bottom of the second stirring tank 12 and is connected with the draft tube 123, it is to be noted that the draft tube 123 is a commonly used component in the art and is used for stirring and guiding sludge, the specific structure of the draft tube is not described any more, a first stirring device is configured in the first stirring tank 11 and is used for stirring in the first stirring tank 11.

The sedimentation device 2 comprises a magnetic medium sedimentation tank 51, wherein a water outlet pipe 511 is arranged at the top of the magnetic medium sedimentation tank 51, a sludge outlet 512 is arranged at the bottom of the magnetic medium sedimentation tank 51, a plurality of inclined plates 52 are arranged in the magnetic medium sedimentation tank 51, a water outlet weir is arranged at the top of each inclined plate 52, a mud scraper and a sludge hopper are arranged at the middle part of the bottom in the magnetic medium sedimentation tank 51, the sludge outlet 512 is connected with the sludge outlet, and after mud and water in the magnetic medium sedimentation tank 51 are separated, clear water enters the upper water outlet weir through the inclined plates 52, is collected and then enters the water outlet pipe 511 to be discharged after reaching the standard; the sludge is settled by gravity, collected by a sludge scraper, enters a sludge hopper and is discharged from a sludge outlet 512; the magnetic medium sedimentation tank 51 and the bottom of the magnetic medium coagulation reaction box 1 are both provided with maintenance pipe sets, and the maintenance pipe sets comprise a maintenance emptying port 513 and an emptying pipe 514 which are sequentially arranged from top to bottom. Through configuration maintenance pipe group, when debugging period or equipment operation fault shut down restart, if the sewage that does not reach standard that produces directly discharges through blow-down pipe, magnetic in the system will run off in a large number. And through the sewage in the system standing and precipitating, and then adopt the maintenance evacuation mouth 513 can only discharge upper portion clear water, and then has remain magnetic powder in the system, has avoided the condition of magnetic powder loss in a large number in the system to take place.

The sludge dewatering unit comprises a sludge buffer tank 61, a dewatering machine 62, a sludge pump 63 and a second PAM preparation device 64; the magnetic recovery device 33 is connected with a sludge buffer tank 61 through a first sludge pipeline 65, and a liquid level meter 611 is arranged in the sludge buffer tank 61 for liquid level protection to prevent a sludge pump 63 from being damaged by dry pumping; the sludge after magnetic recovery enters a sludge buffer tank 61 through a first sludge pipeline 65, the bottom of the sludge buffer tank 61 is connected with a sludge dewatering machine 62 through a second sludge pipeline 66, a sludge pump 63 is arranged on the second sludge pipeline 66, and the sludge in the sludge buffer tank 61 flows into the dewatering machine 62 from the second sludge pipeline 66 under the driving of the power of the sludge pump 63 for dewatering; the second PAM preparation apparatus 64 is provided with a second PAM metering pump 641, the second PAM metering pump 641 is connected to the sludge dewatering apparatus 62 through a second PAM dosing pipe 642, and the liquid medicine prepared by the second PAM preparation apparatus 64 is driven by the power of the second PAM metering pump 641 to enter the sludge dewatering apparatus 62 through the second PAM dosing pipe 642.

The specific working principle is as follows: sewage enters the magnetic medium coagulation reaction box 1 through the water inlet pipe 132 and enters the folded plate reaction zone 13 of the first stirring tank 11, meanwhile, PAC dry powder is configured into a certain concentration through the PAC preparation device 41 and then is fed into the folded plate reaction zone 13 through the PAC metering pump 411, and meanwhile, a medicament configured by the first PAM preparation device 42 is fed into the first stirring tank 11 of the magnetic medium coagulation reaction box 1 through the first PAM metering pump 421; after the sewage enters the folded plate reaction zone 13, the PAC medicament and the sewage are accelerated to be mixed under the action of baffling disturbance of the baffle plate 131; then the mixed sewage enters the first stirring tank 11 from the top of the folded plate reaction zone 13, under the action of the first stirring device, the sewage is mixed with PAM medicament and then flows into the second stirring tank 12, the mixture is stirred by the guide cylinder 123 to accelerate particle size collision and combine to form micro magnetic floccules, then the micro magnetic floccules enter the magnetic medium sedimentation tank 51, after the mud-water separation is carried out in the magnetic medium sedimentation tank 51, clear water enters the upper water outlet weir through the inclined plate 52 and enters the water outlet pipe 511 to be discharged after reaching the standard after being collected; the sludge is settled by gravity, collected by a sludge scraper and enters a sludge hopper, and under the driving action of a magnetic sludge pump 31, the sludge is discharged from a sludge outlet 512 and enters a magnetic sludge pipe 32; the sludge is divided by the three-way valve 34, and a part of the sludge is taken as return sludge, and enters the first stirring tank 11 of the magnetic medium coagulation reaction box 1 after passing through the return electromagnetic flowmeter 352 and the return valve 351, so that the sludge concentration in the system is balanced; the other part of the residual sludge passes through a residual valve 361, a residual electromagnetic flowmeter 362 and an electric throttle valve 363 and then enters a magnetic recovery device 33 for magnetic sludge separation, the recovered magnetic powder falls into a first stirring tank 11 of the magnetic medium coagulation reaction box 1 by gravity, and the sludge separated by the magnetic recovery device 33 enters a sludge buffer tank 61 for sludge temporary storage; the sludge is pumped into the dehydrator 62 from the bottom of the sludge buffer tank 61 through the sludge pump 63, and meanwhile the medicament prepared by the second PAM preparation device 64 is fed into the dehydrator 62 through the second PAM metering pump 641; the final dry sludge produced by dewaterer 62 is shipped for disposal.

Example 2

Referring to fig. 3 to 4, in this embodiment, based on the novel magnetic medium coagulating sedimentation system of embodiment 1, the novel magnetic medium coagulating sedimentation system further includes a skid-mounted base 7, the wastewater conditioning unit, the sludge sedimentation unit and the magnetic medium recovery unit are all skid-mounted on the skid-mounted base 7, an electric control cabinet 71 is configured on the skid-mounted base 7, and the PLC is configured in the electric control cabinet 71. When the apparatus is operating, water is drawn into the system by an external lift pump. Through adopting the sled dress setting, the whole integrated level of equipment is high, convenient transportation, and it is little to take up an area of, and the treatment effeciency is high.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel magnetic medium coagulating sedimentation system comprises a wastewater conditioning unit, a sludge sedimentation unit and a magnetic medium recovery unit, wherein the wastewater conditioning unit comprises a coagulating reaction device for conditioning wastewater, the sludge sedimentation unit comprises a sedimentation device for separating sludge, the coagulating reaction device is communicated with the sedimentation device, and the novel magnetic medium coagulating sedimentation system is characterized in that,

the magnetic medium recovery unit comprises a magnetic mud pump, a magnetic mud pipe and a magnetic recovery device for separating magnetic media, the magnetic mud pump is arranged in the magnetic mud pipe, one end of the magnetic mud pipe is communicated with a sludge outlet of the sedimentation device, the other end of the magnetic mud pipe is connected with a three-way valve, the three-way valve is connected with a return sludge pipe and a residual sludge pipe, the return sludge pipe is communicated with a coagulation reaction device, the residual sludge pipe is communicated with the magnetic recovery device, the return sludge pipe is provided with a return valve and a return electromagnetic flowmeter, and the residual sludge pipe is provided with a residual valve and a residual electromagnetic flowmeter.

2. The novel magnetic medium coagulating sedimentation system according to claim 1, wherein the excess sludge pipe is further provided with an electric throttle valve.

3. The novel magnetic medium coagulating sedimentation system as claimed in claim 1, wherein the coagulating reaction device comprises a magnetic medium coagulating reaction box, a first stirring tank and a second stirring tank which are communicated with each other are arranged in the magnetic medium coagulating reaction box, the second stirring tank is communicated with the sedimentation device, a folded plate reaction area is arranged in the first stirring tank, a plurality of baffle plates for turbulent flow are arranged in the folded plate reaction area, a water inlet pipe is arranged at the bottom of the folded plate reaction area, a water inlet electromagnetic flow meter is arranged in the water inlet pipe, and the top of the folded plate reaction area is communicated with the first stirring tank.

4. The novel magnetic medium coagulating sedimentation system as claimed in claim 3, wherein the wastewater conditioning unit further comprises a PAC preparation device and a first PAM preparation device for preparing a medicament, the PAC preparation device is provided with a PAC metering pump, the PAC metering pump is connected with the folded plate reaction zone through a PAC dosing pipe, the first PAM preparation device is provided with a first PAM metering pump, and the first PAM metering pump is connected with the first stirring tank through a first PAM dosing pipe.

5. The novel magnetic medium coagulating sedimentation system according to claim 3, wherein a draft tube stirring device is arranged in the second stirring tank, the draft tube stirring device comprises a stirring motor, a stirring shaft and a draft tube, the stirring motor is arranged at the top of the second stirring tank, the driving end of the stirring motor is connected with the stirring shaft, and one end of the stirring shaft, which is far away from the stirring motor, is positioned at the bottom of the second stirring tank and is connected with the draft tube.

6. The novel magnetic medium coagulating sedimentation system according to claim 3, wherein the sedimentation device comprises a magnetic medium sedimentation tank, a water outlet pipe is arranged at the top of the magnetic medium sedimentation tank, a sludge outlet is arranged at the bottom of the magnetic medium sedimentation tank, maintenance pipe sets are arranged at the bottoms of the magnetic medium sedimentation tank and the magnetic medium coagulating reaction box respectively, and each maintenance pipe set comprises a maintenance evacuation port and an evacuation pipe which are arranged from top to bottom in sequence.

7. The novel magnetic medium coagulating sedimentation system according to claim 1, characterized by further comprising a sludge dewatering unit, wherein the sludge dewatering unit comprises a sludge buffer tank, a dewatering machine, a sludge pump and a second PAM preparation device; the magnetic recovery device is connected with the sludge buffer tank through a first sludge pipeline, the bottom of the sludge buffer tank is connected with the sludge dewatering machine through a second sludge pipeline, the sludge pump is arranged in a second sludge pipeline, the second PAM preparation device is provided with a second PAM metering pump, and the second PAM metering pump is connected with the sludge dewatering machine through a second PAM dosing pipe.

8. The system of claim 7, wherein a liquid level meter is disposed in the sludge buffer tank.

9. The novel magnetic medium coagulating sedimentation system according to claim 7, further comprising a skid-mounted base, wherein the wastewater conditioning unit, the sludge settling unit and the magnetic medium recovery unit are skid-mounted on the skid-mounted base.