Water supply plant sludge water treatment dosing system

Abstract

The utility model discloses a dosing system for treating sludge water in a waterworks. The system comprises an adjusting tank, a concentration tank, a sludge storage tank, a dehydration device, a first hopper, a second hopper, a liquid container, a liquid storage device, a first stirring device for stirring liquid in the liquid container, a second stirring device for stirring liquid in the liquid storage device, and a PAM concentration monitoring instrument I arranged in the liquid storage device, the timing device is used for recording the duration after the PAM particles in the first hopper are added into the liquid container, a first liquid level detection instrument is arranged in the sludge storage tank, and the regulating tank and the concentration tank are respectively provided with a supernatant recovery and extraction mechanism. Compared with the prior art, the dosing system for sludge water treatment of the waterworks has the advantages that when to prepare the PAM solution is controlled, the concentration of the PAM solution and the preservation time of the solution are determined and adjusted, the effect that the PAM solution serves as a sludge dewatering agent is guaranteed through stirring, material waste is avoided, and water resource waste can be reduced by recycling supernate.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of sludge water treatment of waterworks, more specifically, the utility model relates to a sludge water treatment dosing system of waterworks. BACKGROUND

[0002] The sludge water (sludge water of sedimentation tank and backwash water of filter tank) of waterworks accounts for about 2%-4% of the design scale of waterworks. Although inorganic components account for the majority in the sludge water of waterworks, the concentration of suspended solids is very high, if the waste water is directly discharged, it is not only a waste of water resources, but also causes a certain degree of pollution to water body.

[0003] In order to protect the environment, many waterworks are equipped with sludge water treatment facilities: in order to improve the dewatering performance of sludge, polyacrylamide (PAM) is added, so that the particles in the sludge water quickly form larger floc, which is convenient for sludge separation. When PAM is used as a sludge dewatering agent, it is first dissolved into a glue-like liquid (the ratio with water is controlled at 1‰-2‰), and then added to the sludge for mixing treatment (the ratio with sludge is generally 3%-10%), to form floc alun flower, and after treatment by dewatering equipment, dewatered sludge is formed.

[0004] In the related art, the sludge water treatment of the sludge water treatment system of waterworks generally includes the following links:

[0005] Adjustment: because the sludge discharge of the sedimentation tank of the waterworks and the waste water of the filter tank are intermittent, the water quality and the water volume are unstable, so a regulating tank is set to obtain a more stable solid content of the sludge water, which is conducive to the normal operation of the subsequent facilities.

[0006] Concentration: the solid content of the sludge water of waterworks is generally about 0.05%-0.5%, therefore, the sludge concentration needs to be improved by concentration treatment, so as to facilitate the subsequent dewatering treatment.

[0007] Sludge storage: in order to ensure the orderly connection between the sludge discharge of the concentration tank and the operation of the dewatering device and maintain the normal operation of the sludge dewatering equipment, a sludge storage tank is set after the concentration tank, which plays the role of buffering and storing concentrated sludge.

[0008] Dewatering: the concentrated sludge is dewatered to further reduce the water content and volume, which is convenient for transportation and final disposal. In order to improve the dewatering performance of the sludge, a flocculating agent is added when the sludge is dewatered, so that the particles in the sludge water can quickly form larger floc, which is convenient for sludge separation.

[0009] Although the sludge water treatment system of waterworks in the related art can realize sludge water treatment, it at least has the following defects:

[0010] (1) the self-use water rate of the water plant is low in the sludge water treatment process, and water resources are wasted;

[0011] (2) since the PAM particles have large crystal, they are easy to be lumped in water and float on the water surface in the drug preparation process, resulting in poor solubility and unsatisfied drug preparation concentration, and leading to poor sludge treatment effect; if a large amount of PAM particles is directly placed in the preparation process, the operation cost of the water plant is increased.

[0012] Therefore, it is necessary to provide a sludge water treatment dosing system for a water plant to overcome the defects of the prior art. Content of the utility model

[0013] The utility model discloses a sludge water treatment dosing system for a water plant, which can solve the problem of not wasting PAM and ensuring sludge treatment effect, and reduce water resource waste.

[0014] In order to realize the above-mentioned invention purpose, the utility model provides a sludge water treatment dosing system for a water plant, which comprises a regulating pool, a concentration pool, a sludge storage pool and a dewatering device connected in sequence, further comprises a first hopper for loading PAM particles, a second hopper for loading PAM particles, a liquid receiving container, a liquid storage device connected with the liquid outlet of the liquid receiving container, a first stirring device for stirring the liquid in the liquid receiving container, a second stirring device for stirring the liquid in the liquid storage device, a PAM concentration monitoring instrument one arranged in the liquid storage device and a timing device, the first hopper is arranged corresponding to the liquid receiving container, the second hopper is arranged corresponding to the liquid storage device, the timing device is used for recording the time length after PAM particles in the first hopper are added into the liquid receiving container, the liquid outlet of the liquid storage device is connected with the dewatering device, the sludge storage pool is provided with a first liquid level detection instrument, the regulating pool is provided with a supernatant recovery extraction mechanism, and the concentration pool is provided with a supernatant recovery extraction mechanism.

[0015] According to one preferred embodiment of the sludge water treatment dosing system for a water plant, the regulating pool is provided with a second liquid level detection instrument, and the concentration pool is provided with a third liquid level detection instrument.

[0016] According to one preferred embodiment of the sludge water treatment dosing system for a water plant, a second drug treatment device is arranged corresponding to the concentration pool, and the second drug treatment device is used for adding PAM particles or PAM solution into the concentration pool.

[0017] According to one preferred embodiment of the sludge water treatment dosing system for a water plant, the concentration pool is further provided with a third stirring device for stirring the liquid in the concentration pool.

[0018] According to one preferred embodiment of the water treatment dosing system for sludge water in a waterworks, the system further comprises a processing chip, and the processing chip is connected to the first liquid level detection instrument.

[0019] According to one preferred embodiment of the water treatment dosing system for sludge water in a waterworks, the processing chip is connected to a prompter, and the processing chip starts the prompter according to the detection value of the first liquid level detection instrument.

[0020] According to one preferred embodiment of the water treatment dosing system for sludge water in a waterworks, the processing chip is connected to the feeding switch of the first hopper and the first stirring device.

[0021] According to one preferred embodiment of the water treatment dosing system for sludge water in a waterworks, the processing chip is connected to the PAM concentration monitoring instrument, the timing device, the second hopper, the second stirring device, the liquid outlet valve of the liquid receiving container, and the liquid outlet valve of the liquid storage device.

[0022] According to one preferred embodiment of the water treatment dosing system for sludge water in a waterworks, the supernatant recovery and extraction mechanisms of the adjusting tank and the concentration tank are the same in structure, and each comprises a water suction pipe, a water suction pump arranged on the water suction pipe, a lift driving the water suction end of the water suction pipe to lift, and a liquid surface corresponding to the adjusting tank or the concentration tank.

[0023] According to one preferred embodiment of the water treatment dosing system for sludge water in a waterworks, the first stirring device comprises a bracket I connected to the liquid receiving container, a stirring motor I located on the bracket I, and stirring blades I connected to the stirring motor I, the bracket I and the stirring motor I are arranged directly above the liquid receiving container, and the stirring blades I are located in the liquid receiving container; the second stirring device comprises a bracket II connected to the liquid storage device, a stirring motor II located on the bracket II, and stirring blades II connected to the stirring motor II, and the stirring blades II are located in the liquid storage device.

[0024] Compared with the prior art, the utility model provides self -service water plant sludge water treatment dosing system is equipped with the first hopper of loading PAM particle, the second hopper of loading PAM particle, the liquid container, the liquid storage device, the first stirring device for stirring the liquid in the liquid container, the second stirring device for stirring the liquid in the liquid storage device, PAM concentration monitoring instrument one set up in the liquid storage device, timing device and first liquid level detection instrument, so design, the staff can know the mud amount in the sludge storage pool, can control when starting to make PAM solution according to the result of first liquid level detection instrument, determine and adjust PAM solution concentration, the staff can control solution storage time through timing device to guarantee the effect of PAM solution as sludge dewatering agent, also avoided material waste, according to the first stirring device and second stirring device improve the solubility and dissolution efficiency of PAM particle, need not configure time directly place a large amount of PAM particle, avoided the waste of PAM, saved the cost of sludge water treatment. BRIEF DESCRIPTION OF DRAWINGS

[0025] The utility model self -service water plant sludge water treatment dosing system and its technical effect are explained in detail below combining with the drawings and specific embodiment, wherein:

[0026] Figure 1 The structure schematic diagram of self -service water plant sludge water treatment dosing system provided by the utility model.

[0027] Figure 2 The process flow schematic diagram of self -service water plant sludge water treatment dosing system provided by the utility model.

[0028] Mark in the drawing:

[0029] 100--self -service water plant sludge water treatment dosing system, 10--adjustment pool, 11--adjustment pool supernatant recovery extraction mechanism, 20--concentration pool, 21--concentration pool supernatant recovery extraction mechanism, 22--second drug processing device, 30--sludge storage pool, 31--first liquid level detection instrument, 40--dewatering device, 50--liquid container, 51--first hopper, 52--first stirring device, 60--liquid storage device, 61--second hopper, 62--second stirring device, 63--PAM concentration monitoring instrument one. SPECIFIC EMBODIMENT

[0030] In order to make the application purpose, technical scheme and technical effect of the utility model clearer, the utility model will be explained in further detail below in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described in the specification are only for the purpose of explaining the utility model, and are not intended to limit the utility model.

[0031] Please refer to Figure 1 The utility model provides a kind of sludge water treatment dosing system 100 of waterworks, it includes the adjusting pool 10, thickening pool 20, sludge storage pool 30, dehydration device 40 in turn connection, and the first drug treatment device that communicates dehydration device 40.

[0032] First supernatant recovery extraction mechanism 11 is equipped on adjusting pool 10, and first supernatant recovery extraction mechanism 11 is used to recover supernatant in adjusting pool 10.Second supernatant recovery extraction mechanism 21 is equipped on thickening pool 20, and is used to recover supernatant in thickening pool 20.First liquid level detector 31 is equipped in sludge storage pool 30, and is used to detect the liquid level in sludge storage pool 30.

[0033] First drug treatment device includes liquid container 50 for loading water and PAM particles, first hopper 51 for loading PAM particles, first stirring device 52 for stirring liquid in liquid container 50, liquid storage device 60 connected with the liquid outlet of liquid container 50, second hopper 61 for loading PAM particles, second stirring device 62 for stirring liquid in liquid storage device 60, PAM concentration monitoring instrument one 63 arranged in liquid storage device 60.

[0034] First hopper 51 is arranged corresponding to liquid container 50, and second hopper 61 is arranged corresponding to liquid storage device 60, and the liquid outlet of liquid storage device 60 is connected with dehydration device 40.First drug treatment device further includes timing device, for recording the time length of PAM particles in first hopper 51 after being added into liquid container 50.The position of timing device is not limited, for example, on first hopper 51, or in the hand of operator.

[0035] In the embodiment, the time length of PAM solution can be controlled by timing device, and according to the timing control of timing device, when PAM particles are added into liquid container 50 and reach 90 minutes, the solution in liquid container 50 is discharged to liquid storage device 60, and according to the timing device, the time length of solution staying in liquid storage device 60 does not exceed 30 minutes, and then it is discharged to dehydration device 40 through corresponding valve, for example, to the mud inlet pipe of dehydration device 40, and then to the mixing tank of dehydration device 40, and then dehydration device 40 is stirred.In the solution in liquid storage device 60, the value of PAM concentration monitoring instrument one 63 is obtained, and if it does not meet the requirement, the PAM solution concentration is increased by second hopper 61 and second stirring device 62.

[0036] In the embodiment, the liquid container 50 is provided with a medicine feeding port, a water inlet and a liquid outlet, the discharge port of the first hopper 51 is arranged corresponding to the medicine feeding port of the liquid container 50, the liquid outlet of the liquid container 50 is connected to the liquid inlet of the liquid storage device 60, and the liquid outlet of the liquid storage device 60 is communicated with the dewatering device 40.

[0037] It should be noted that the medicine feeding port and the water inlet of the liquid container 50 can be the same port, which is referred to as a total inlet, for example, the liquid container 50 does not have an upper cover, the first stirring device 52 comprises a support one connected to the liquid container 50, a stirring motor one arranged on the support one and a stirring blade one connected to the stirring motor one, the support one and the stirring motor one are arranged above the liquid container 50, the stirring blade one is arranged in the liquid container 50 and controlled by the stirring motor one, and the space above the liquid container 50, except the space occupied by the support and the motor, is the feeding port.

[0038] In the embodiment, the second stirring device 62 comprises a support two connected to the liquid storage device 60, a stirring motor two arranged on the support two and a stirring blade two connected to the stirring motor two, the support two and the stirring motor two are arranged above the liquid storage device 60, and the stirring blade two is arranged in the liquid storage device 60 and controlled by the stirring motor two. The liquid storage device 60 is also provided with a medicine feeding port two, and the medicine feeding port two and the second hopper 61 are arranged correspondingly.

[0039] In the embodiment, the supernatant recovery and extraction mechanism 11 of the adjusting tank and the supernatant recovery and extraction mechanism 21 of the concentration tank have the same structure, and each comprises a water suction pipe, a water suction pump arranged on the water suction pipe, a lifting machine for lifting the water suction end of the water suction pipe, and the water suction end is arranged corresponding to the liquid level of the adjusting tank 10 or the concentration tank 20. The lifting machine can be installed on the wall of the adjusting tank 10 or the wall of the concentration tank 20, or can not be connected to the adjusting tank 10 or the concentration tank 20 and be located on the side of the adjusting tank 10 or the concentration tank 20.

[0040] In the embodiment, the adjusting tank 10 is provided with a second liquid level detection instrument, and the concentration tank 20 is provided with a third liquid level detection instrument.

[0041] In the embodiment, a second medicine treatment device 22 is arranged corresponding to the concentration tank 20, and the second medicine treatment device 22 is used for adding PAM particles or PAM solution into the concentration tank 20. The concentration tank 20 is also provided with a third stirring device for stirring the liquid in the concentration tank 20. The concentration tank 20 is provided with a sludge concentration meter, and when the sludge concentration (the solid content is generally 2%-5%) of the concentration tank 20 reaches a set value, the sludge is discharged into the sludge storage tank 30.

[0042] According to a preferred embodiment of the utility model, the system further comprises a processing chip, and the first liquid level detection instrument 31 is connected to the processing chip.

[0043] Specifically, in an embodiment, the processing chip is connected to the prompter, and the processing chip starts the prompter according to the detection value of the first liquid level detection instrument 31. Specifically, when the detection value of the first liquid level detection instrument 31 is H1 and H2, the prompter prompts; further, when the detection value is H3, the prompter also prompts, and all are positive numbers, and H1 < H2 < H3.

[0044] In another embodiment, the processing chip is connected to the feeding switch of the first hopper 51 and the first stirring device 52, and when the detection value of the first liquid level detection instrument 31 is H1, the processing chip opens the feeding switch and starts the first stirring device 52. The processing chip is also connected to the liquid outlet valve of the liquid receiving container 50 and the timing device, and when the timing value of the timing device reaches the first time, the processing chip opens the liquid outlet valve at the liquid outlet of the liquid receiving container 50; when the detection value of the first liquid level detection instrument 31 is H2, the processing chip opens the liquid outlet valve at the liquid outlet of the liquid storage device 60.

[0045] Further, the processing chip is connected to the PAM concentration monitoring instrument 63, the feeding switch of the second hopper 61 and the second stirring device 62, and whether to open the feeding switch of the second hopper 61 and the second stirring device 62 is determined according to the value of the PAM concentration monitoring instrument 63 of the processing chip. The processing chip is used to open the sludge conveying pump of the sludge storage tank 30 and the related pipeline valve, and when the detection value of the first liquid level detection instrument 31 is H2 and the value of the PAM concentration monitoring instrument 63 meets the preset preparation, the processing chip opens the liquid outlet valve of the liquid storage device 60 and the sludge conveying pump of the sludge storage tank 30 and the related pipeline valve. When the timing value of the timing device reaches the second time, the processing chip opens the liquid outlet valve of the liquid storage device 60 and the sludge conveying pump of the sludge storage tank 30 and the related pipeline valve. When the detection value of the first liquid level detection instrument 31 is H3, the processing chip opens the liquid outlet valve of the liquid storage device 60 and the sludge conveying pump of the sludge storage tank 30. It can be understood that the above processing chip can adopt a processor. The above is only an example, which can be independent of the processing chip, that is, manual operation is performed.

[0046] Please refer to Figure 2 The working process of the water treatment dosing system 100 is as follows:

[0047] The sludge water of the waterworks sedimentation tank and the backwash water of the filter tank are intermittently discharged into the adjusting tank 10 for buffering, and the supernatant of the adjusting tank 10 is returned to the front end of the water intake pump house to be treated together with raw water. The sludge water buffered in the adjusting tank 10 enters the thickening tank 20 (the solid content is generally 0.05%-0.5%), and gravity or dosing is used to further thicken the sludge water. The supernatant after thickening is sucked out by the supernatant recovery extraction mechanism 21 of the thickening tank and is reused as needed. When the sludge concentration meter detects that the sludge concentration (the solid content is generally 2%-5%) of the thickening tank 20 reaches the set value, the sludge is discharged into the sludge storage tank 30.

[0048] The sludge storage tank 30 is provided with three liquid levels H1, H2 and H3, and satisfies H1<H2<H3.

[0049] When the liquid level of the sludge storage tank 30 reaches the set value H1, the dosing device starts the PAM solution preparation work: the PAM particles in the hopper are sent into the mixing area through the quantitative feeding device, mixed with water, and after stirring, the mixed liquid is uniformly mixed into a PAM solution with a certain concentration, and finally enters the storage area and is added to the dosing point by the metering pump. The storage area is provided with a PAM concentration on-line monitoring instrument for real-time monitoring of the PAM concentration. In order to make the PAM fully dissolved, sufficient stirring should be performed, and if necessary, the stirring intensity should be increased, and the aging time of the PAM (generally about 90 minutes) should be controlled. From the start of dosing, when the quantitative PAM particles have been sent into the mixing area, within 120 minutes, if the PAM solution in the storage area does not reach the set concentration, the stirring should be continued / strengthened, and when the stirring time reaches 120 minutes, a small amount of PAM particles can be continuously added, and the stirring is continued until the PAM solution reaches the set concentration.

[0050] When the sludge in the sludge storage tank 30 reaches the set liquid level H2 and the PAM solution preparation is completed, the sludge pump and the dosing pump are started, and the corresponding pipeline valves are opened, so that the sludge and the PAM solution are mixed and flocculated. The mixing method can be mixed at the sludge inlet pipe or stirred and mixed in the mixing tank according to the actual situation. The mixed and flocculated sludge enters the dewatering process through the pipeline, and the dewatered sludge after treatment is transported and disposed.

[0051] When the sludge in the sludge storage tank 30 reaches the set liquid level H3, whether the PAM solution concentration reaches the set value or not, the sludge pump, the dosing pump and the corresponding pipeline valves are simultaneously opened, and after the sludge and the PAM solution are mixed, they enter the dewatering process. It should be noted that generally, the liquid level of the sludge storage tank will not reach H3, and the setting of H3 is mainly to cope with the situation of sudden increase of sludge in a short time due to sudden situation of the water plant.

[0052] According to one embodiment of the present application, the PAM dosing pump is a variable frequency pump, and a PID control method is used to calculate the operating frequency of the dosing pump, and the calculation formula is as follows:

[0053]

[0054] Wherein, e(t) is the sludge concentration in the sludge storage tank at time t, and KP, KI and KD are control parameters.

[0055] The dewatering system intermittently operates the water plant, and the emptying valve of the dosing device is linked with the dosing pump. When the dosing pump stops dosing for a set time, the PAM emptying valve is opened, so that the remaining PAM in the box is completely discharged, without affecting the subsequent dosing.

[0056] It should be noted that the present application can be set up modularly according to needs, specifically including sludge water conveying module, stirring module, dosing module and automatic monitoring module, which are connected with the central control room server through signal lines. The central control server records and stores the data of the operation of the above modules, and processes intelligently according to the program setting.

[0057] Sludge water conveying module: including sludge pump, pipeline and valve, etc.

[0058] Stirring module: including thickening tank, sludge storage tank, stirring device of dosing equipment.

[0059] Dosing module: including device for dispensing and dosing, specifically, PAM particles in the hopper are sent into the mixing area through the quantitative feeding device, mixed with water, and the mixture is stirred and mixed to form PAM solution with a set concentration, and finally enters the liquid storage area and is added to the dosing point by the metering pump. The liquid storage area is provided with a PAM concentration online monitoring instrument for real-time monitoring of PAM concentration.

[0060] Automatic monitoring module: including concentration detection instrument of thickening tank / sludge storage tank, liquid level detection instrument, PAM concentration detection instrument, all instrument data can be transmitted to the central control server through signal.

[0061] Central control room server: connected with sludge water conveying module, stirring module, dosing module and automatic monitoring module respectively, and controls the start and stop of the related modules.

[0062] From the detailed description of the specific embodiments of the present application, it can be seen that, compared with the prior art, the present application has the following advantages:

[0063] By adjusting the supernatant recovery and extraction mechanism 11 provided on the adjusting tank 10 and the supernatant recovery and extraction mechanism provided on the thickening tank 20, the self-use water rate of the waterworks during sludge water treatment is improved, and water resource waste is reduced.

[0064] Through the first hopper 51 containing PAM particles, the second hopper 61 containing PAM particles, the liquid containing container 50, the liquid storage device 60, the first stirring device 52 for stirring the liquid in the liquid containing container 50, the second stirring device 62 for stirring the liquid in the liquid storage device 60, the PAM concentration monitoring instrument one 63 provided in the liquid storage device 60, the timing device and the first liquid level detection instrument 31, the worker can know the amount of mud in the sludge storage tank 30, and can control when to start preparing PAM solution, determine and adjust the PAM solution concentration according to the result of the first liquid level detection instrument 31. The worker can control the solution storage time through the timing device to ensure the effect of PAM solution as a sludge dewatering agent, and also avoid material waste.

[0065] According to the first stirring device 52 and the second stirring device 62, the solubility and the dissolution efficiency of PAM particles are improved, a large amount of PAM particles can be directly placed without being configured in time, PAM waste is avoided, and the cost of sludge water treatment is saved.

[0066] In the present application, the description of "first", "second" and the like is only for the purpose of description and cannot be understood as indicating or implying the relative importance of the technical features or implicitly indicating the number of the technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor within the protection scope of the present application.

[0067] According to the above principle, the above embodiment can be appropriately changed and modified. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present application should fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the specification, these terms are only for convenience of description and do not constitute any limitation on the present application.

Claims

1. A dosing system for treating sludge water from a water treatment plant, characterized in that, The system comprises a conditioning tank, a concentration tank, a sludge storage tank and a dewatering device connected in sequence, a first hopper for storing PAM particles, a second hopper for storing PAM particles, a liquid container, a liquid storage device connected to the liquid outlet of the liquid container, a first stirring device for stirring the liquid in the liquid container, a second stirring device for stirring the liquid in the liquid storage device, a PAM concentration monitoring instrument one arranged in the liquid storage device, and a timing device.

2. The waterworks sludge water treatment dosing system according to claim 1, wherein The first hopper is arranged corresponding to the liquid container, the second hopper is arranged corresponding to the liquid storage device, and the timing device is used to record the time length after the PAM particles in the first hopper are added into the liquid container.

3. The waterworks sludge water treatment and dosing system according to claim 1, wherein The liquid outlet of the liquid storage device is connected to the dewatering device, the first liquid level detection instrument is arranged in the sludge storage tank, the conditioning tank is provided with a conditioning tank supernatant recovery extraction mechanism, and the concentration tank is provided with a concentration tank supernatant recovery extraction mechanism.

4. The waterworks sludge water treatment and dosing system according to claim 3, wherein The conditioning tank is provided with a second liquid level detection instrument, and the concentration tank is provided with a third liquid level detection instrument.

5. The waterworks sludge water treatment and dosing system according to claim 1, wherein The second medicament treatment device is arranged corresponding to the concentration tank and is used to add PAM particles or PAM solution into the concentration tank.

6. The waterworks sludge water treatment and dosing system according to claim 5, wherein The concentration tank is further provided with a third stirring device for stirring the liquid in the concentration tank.

7. The waterworks sludge water treatment and dosing system according to claim 5, wherein The system further comprises a processing chip connected to the first liquid level detection instrument.

8. The waterworks sludge water treatment and dosing system according to claim 7, wherein The processing chip is connected to a prompter, and the processing chip starts the prompter according to the detection value of the first liquid level detection instrument.

9. The waterworks sludge water treatment and dosing system according to claim 1, wherein The processing chip is connected to the feeding switch of the first hopper and the first stirring device.

10. The waterworks sludge water treatment and dosing system according to claim 1, wherein The processing chip is connected to the PAM concentration monitoring instrument one, the timing device, the second hopper, the second stirring device, the liquid outlet valve of the liquid container and the liquid outlet valve of the liquid storage device. The conditioning tank supernatant recovery extraction mechanism and the concentration tank supernatant recovery extraction mechanism have the same structure and comprise a water suction pipe, a water suction pump arranged on the water suction pipe, a lifting machine for lifting the water suction end of the water suction pipe, and the water suction end corresponding to the liquid surface of the conditioning tank or the concentration tank. The first stirring device comprises a support one connected to the liquid container, a stirring motor one arranged on the support one, and a stirring blade one connected to the stirring motor one, the support one and the stirring motor one are arranged directly above the liquid container, and the stirring blade one is arranged in the liquid container; the second stirring device comprises a support two connected to the liquid storage device, a stirring motor two arranged on the support two, and a stirring blade two connected to the stirring motor two, and the stirring blade two is arranged in the liquid storage device.

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