CN218202488U

CN218202488U - Sludge dewatering system of waterworks

Info

Publication number: CN218202488U
Application number: CN202221018012.3U
Authority: CN
Inventors: 陈艳萍; 许建鹏; 李林冲; 段立文; 丁小平
Original assignee: Guangzhou Zhenda Environmental Protection Industry Co ltd
Current assignee: Guangzhou Zhenda Environmental Protection Industry Co ltd
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2023-01-03
Anticipated expiration: 2032-04-27

Abstract

The application relates to a sludge dewatering system of a water works, belonging to the field of sludge dewatering systems. It includes: store up mud pit, sludge concentration and advance dredge pump, rotary drum thickener, sludge dewatering and advance dredge pump and spin dewaterer, the mud that stores up the mud pit passes through sludge concentration and advances dredge pump and carry extremely rotary drum thickener, rotary drum thickener row mud mouth exhaust concentrated mud passes through sludge dewatering advances dredge pump and carries extremely spin dewaterer. This application adopts rotary drum thickener and spinning dewaterer to jointly use, carries out "concentration + dehydration" with the feedwater mud of water works storage mud pond and handles, obtains the water content at 85 + -2% dehydration sludge cake for water works's storage mud pond mud carries out quick effectual minimizing treatment, has that area is little, the time limit for a project is short, the advantage of small investment, and the sludge minimizing treatment of the limited old water works of specially adapted extension area needs.

Description

Sludge dewatering system of water works

Technical Field

The invention relates to the field of sludge dewatering systems, in particular to a sludge dewatering system of a tap water plant.

Background

In the process of daily production of tap water in a tap water plant, a large amount of sewage and sludge are generated, the sewage is generally discharged into a sewer and is communicated to a nearby urban sewage plant for treatment, and the problem of deposition and blockage of the sewage due to poor fluidity of the water supply sludge is easy to occur in the sewer, so that the sewage is generally dehydrated in the sewage plant to form a mud cake and then is transported away to a sanitary landfill.

At present, most waterworks can build a sludge concentration tank in a factory area, and sludge is reduced through a gravity concentration mode, but the traditional treatment method needs a larger floor area, and some old waterworks without local expansion are difficult to solve the pressure of sludge treatment through building the sludge concentration tank, so that a sludge dewatering system which can be applied to the waterworks with limited built-up areas is urgently needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned prior art problems, the present application provides a sludge dewatering system of a waterworks.

The application provides a sludge dewatering system of water works, adopts following technical scheme:

a sludge dewatering system for a waterworks, comprising: store up mud pit, sludge concentration and advance dredge pump, rotary drum thickener, sludge dewatering and advance dredge pump and spin dewaterer, the mud that stores up the mud pit passes through sludge concentration and advances dredge pump and carry extremely rotary drum thickener, rotary drum thickener row mud mouth exhaust concentrated mud passes through sludge dewatering advances dredge pump and carries extremely spin dewaterer.

By adopting the technical scheme, the rotary drum thickener and the spinning dehydrator are used in a combined manner, and the sludge in the sludge storage tank is subjected to concentration and dehydration treatment, so that the sludge is subjected to rapid and effective reduction treatment.

Preferably, the sludge dewatering equipment further comprises a sludge buffer tank, wherein the sludge buffer tank is arranged between the rotary drum thickener and the spinning dewaterer, and the concentrated sludge is discharged into the sludge buffer tank.

By adopting the technical scheme, the concentrated sludge discharged from the rotary drum thickener is collected into the sludge buffer tank, and is pumped into the spinning dehydrator to be processed after being stored to a certain amount of sludge, so that the intermittent pumping dehydration processing is realized, and the problem of energy waste caused by the fact that the amount of the sludge discharged from the rotary drum thickener is not equal to the throughput of the spinning dehydrator is solved.

Preferably, the device further comprises a mud coagulant preparation device and a mud coagulant adding pump for dehydration, wherein the mud coagulant preparation device conveys the mud coagulant into the spinning dehydrator through the mud coagulant adding pump for dehydration.

Through adopting above-mentioned technical scheme, PAM medicament that the mud coagulant system medicine ware was made PAM dry powder solution throws the pump and is pumped to the spin-drying machine through the mud coagulant for the dehydration, PAM medicament congeals with mud intensive mixing mud to in carrying out the spin-drying treatment better, improved the minimizing treatment effect of mud.

Preferably, the system further comprises a mud coagulant preparation device and a mud coagulant adding pump for concentration, wherein the mud coagulant preparation device conveys the mud coagulant to the rotary drum thickener through the mud coagulant adding pump for concentration.

Through adopting above-mentioned technical scheme, PAM medicament that coagulant preparation ware dissolved PAM dry powder and made is thrown the pump and is sent to the rotary drum concentrator through concentrated with coagulant, and the mud after the flocculation can reduce the content rate in the rotary drum concentrator better, has good mud minimizing effect.

Preferably, the system further comprises a mixing and conditioning box, an overflow port of the mixing and conditioning box is connected with a sludge inlet of the drum concentrator, a bottom outlet of the mixing and conditioning box is connected with a top inlet of the sludge storage pool, and the sludge coagulant preparation device is connected to the mixing and conditioning box through a sludge coagulant feeding pump for concentration.

Because the mud moisture content in storing up the mud pond is higher, throw with mud pump and mud at the mixed case intensive mixing flocculation through concentrating the mud coagulant of PAM medicament, the suspension wadding group that the flocculation formed is discharged into the concentrated processing in the rotary drum concentrator through the overflow mouth, it is abundant to flocculate earlier, the rotary drum is concentrated again, the minimizing treatment effect of mud is better, and the sediment mud that fails abundant flocculation to become suspension wadding group then discharges into to storing up in the mud pond, the pump sending backward flow again with PAM medicament intensive mixing in the mixed case, with the mud of guaranteeing can obtain abundant mud coagulation processing, further improved the minimizing treatment effect to mud.

Preferably, the spinning water extractor further comprises a back flushing pipe, and the back flushing pipe is respectively connected with the rotary drum thickener and the spinning water extractor.

By adopting the technical scheme, the sludge blocked in the rotary drum thickener and the spinning dehydrator is back-washed and cleaned by the back-washing pipe.

Preferably, the system also comprises a concentrated sludge inlet flowmeter and a dewatered sludge inlet flowmeter, wherein the concentrated sludge inlet flowmeter is arranged on a pipeline connected to the input end of the rotary drum thickener, and the dewatered sludge inlet flowmeter is arranged on a pipeline connected to the input end of the spinning dehydrator.

By adopting the technical scheme, workers can perform corresponding equipment parameter adjustment operation according to the concentrated sludge inlet flowmeter and the dehydrated sludge inlet flowmeter so as to better run systematic sludge dehydration treatment.

Preferably, the sludge thickening sludge pump, the rotary drum thickener, the sludge dewatering sludge pump and the spinning dehydrator which are correspondingly connected form a sludge dewatering path, the tap water sludge dewatering system is provided with a plurality of sludge dewatering paths, and the plurality of sludge dewatering paths are connected in parallel.

By adopting the technical scheme, according to the actual demand of a water plant, a plurality of groups of rotary drum thickeners and spinning dewaterers can be skid-mounted for combined treatment, and sludge in a sludge storage pool of the water plant can be efficiently reduced.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the sludge in the sludge storage tank of the waterworks can be subjected to deep reduction treatment of concentration and dehydration by jointly installing the rotary drum thickener and the spinning dehydrator, and the sludge is treated by the combined use of the rotary drum thickener and the spinning dehydrator, so that the sludge reduction treatment device has the advantages of small floor area, quick construction, investment, short construction period and the like, and is particularly suitable for sludge reduction treatment of old waterworks with limited extension area;

2. the sludge caching tank is arranged between the rotary drum thickener and the spinning dehydrator, so that the sludge discharged by the rotary drum thickener can be cached in the sludge caching tank, and the sludge is pumped for dehydration treatment after being cached to a certain amount, thereby effectively saving the power consumption;

3. through setting up the mixed conditioning case, make the higher mud of water content can mix with PAM medicament in the mixed conditioning case fully and carry out mud and congeal, not only effectively improved the concentrated effect of rotary drum concentrator, the mud that fails fully mud to congeal moreover can flow into in the mud storage pond by the pumpout again and continue to carry out mud and congeal in the mixed conditioning case, improved the concentrated minimizing treatment effect to the higher feedwater mud of water content by a wide margin.

Drawings

FIG. 1 is a schematic view of the overall structure in embodiment 1 of the present application;

fig. 2 is a schematic view of the overall structure in embodiment 2 of the present application.

Description of reference numerals: 1. a mud storage pool; 2. a rotary drum thickener; 21. sludge is concentrated and enters a sludge pump; 22. a sludge concentration flow meter; 23. a mixing and conditioning box; 3. spinning a dehydrator; 31. sludge dewatering and feeding into a sludge pump; 32. dewatering and feeding into a mud flowmeter; 33. a sludge buffer tank; 4. preparing a medicine preparation device by using a mud coagulant; 41. adding a pump for a coagulant for concentration; 42. adding a mud coagulant for dehydration into a pump; 5. and (4) backwashing the pipe.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a sludge dewatering system of a water works.

Example 1:

referring to fig. 1, a sludge dewatering system of a water works comprises a sludge storage tank 1, a rotary drum thickener 2, a sludge concentration sludge inlet pump 21, a concentration sludge inlet flowmeter 22, a spinning dewaterer 3, a sludge dewatering sludge inlet pump 31, a dewatering sludge inlet flowmeter 32, a sludge buffer tank 33, a sludge coagulant preparation device 4, a concentration coagulant adding pump 41, a dewatering coagulant adding pump 42 and a back flushing pipe 5, wherein the sludge concentration sludge inlet pump 21, the rotary drum thickener 2, the spinning dewaterer 3 and the sludge dewatering sludge inlet pump 31 which are correspondingly connected form a sludge dewatering path.

Referring to fig. 1, a mixing and conditioning tank 23 is installed on the rotary drum thickener 2, an overflow port of the mixing and conditioning tank 23 is communicated with a rotary drum sludge inlet of the rotary drum thickener 2, and a bottom outlet of the mixing and conditioning tank 23 is communicated with a top inlet of the sludge storage tank 1. The input end of the sludge concentration inlet pump 21 is connected with a sludge discharge pipe at the bottom of the sludge storage tank 1, the output end of the sludge concentration inlet pump 21 is connected with the top inlet of the mixing and conditioning box 23, the sludge concentration inlet pump 21 can be specifically a slurry pump, and sludge is pumped into the mixing and conditioning box 23 through the sludge concentration inlet pump 21. The sludge-thickening flow meter 22 is installed on a connecting pipe between the sludge-thickening sludge pump 21 and the mixing and conditioning tank 23. Inlet tube and PAM powder feeder hopper are connected to the PAM medicament jar of mud coagulant system medicine 4, and the PAM powder drops into PAM medicament jar from the feeder hopper in, and the factory running water dissolves PAM powder from the inlet tube towards PAM medicament jar notes water, makes the PAM medicament through the stirring. The input of pump 41 is thrown with the mud coagulant in concentration and PAM medicament jar of mud coagulant system 4 is connected, and the output of pump 41 is thrown with the mud coagulant in concentration is connected with mixed case 23, and PAM medicament is thrown with the pump 41 through the mud coagulant in concentration and is pumped to mixed case 23 in.

The sludge in the sludge storage tank 1 is pumped into a mixing and conditioning box 23 by a sludge concentration mud inlet pump 21, a PAM medicament which is 2-4 per mill of the weight of the sludge is pumped into the mixing and conditioning box 23 by a sludge coagulant adding pump 41 for concentration, the sludge and the PAM medicament are fully mixed in the mixing and conditioning box 23, flocculated sludge flocs flow into a drum sludge inlet of a drum thickener 2 through an overflow port of the mixing and conditioning box 23, the drum thickener 2 carries out drum concentration treatment on the sludge and then discharges the concentrated sludge, the precipitated sludge which does not fully flocculate, suspend and overflow in the mixing and conditioning box 23 is discharged into the sludge storage tank 1 through an outlet at the bottom of the mixing and conditioning box 23, and the sludge in the sludge storage tank 1 is re-pumped and returned to the mixing and conditioning box 23 through the sludge concentration mud inlet pump 21 for continuous mixing and flocculation reaction.

Referring to fig. 1, a sludge discharge port of the drum concentrator 2 is connected to a tank top inlet of the sludge buffer tank 33, and the concentrated sludge treated by the drum concentrator 2 is discharged into the sludge buffer tank 33. The input end of the sludge dewatering sludge inlet pump 31 is connected with the sludge cache tank 33, the output end of the sludge dewatering sludge inlet pump 31 is connected with the sludge inlet of the spinning dehydrator 3, and the sludge dewatering sludge inlet pump 31 can be specifically a screw pump. The sludge is pumped into the spin dryer 3 by the sludge dewatering inlet pump 31. The dewatering sludge inflow meter 32 is installed on a connecting pipe between the sludge dewatering sludge inflow pump 31 and the spinning dewaterer 3. The input end of the mud coagulant adding pump 42 for dehydration is also connected with the PAM agent tank of the mud coagulant preparation device 4, the output end of the mud coagulant adding pump 42 for dehydration is connected with the spin dehydrator 3, and the PAM agent is pumped into the spin dehydrator 3 through the mud coagulant adding pump 42 for dehydration.

Since the sludge is reduced in the rotary drum thickener 2, the sludge buffer tank 33 is arranged between the rotary drum thickener 2 and the spinning dehydrator 3, the concentrated sludge discharged from the rotary drum thickener 2 is stored in the sludge buffer tank 33, after the concentrated sludge in the sludge buffer tank 33 is stored to a certain amount, the concentrated sludge is pumped into the spinning dehydrator 3 through the sludge dewatering sludge inlet pump 31, and the intermittent pumping dehydration treatment is used for replacing the continuous treatment, so that the problem of power waste caused by the fact that the sludge discharge amount of the rotary drum thickener 2 is not equal to the treatment amount of the spinning dehydrator 3 can be reduced. The spinning dehydrator 3 dehydrates the deeply concentrated sludge to obtain dehydrated sludge cakes, thereby completing the reduction treatment of the sludge.

Referring to fig. 1, two backwashing pipes 5 are respectively connected with a rotary drum thickener 2 and a spinning dehydrator 3, after a plant sludge dewatering system operates for a period of time, reclaimed water in a plant is introduced into the rotary drum thickener 2 and the spinning dehydrator 3 through the backwashing pipes 5 for backwashing, and backwashing sewage after backwashing is introduced into a trench and is discharged.

The implementation principle of the embodiment of the application is as follows:

the water supply sludge of a water plant is collected into a sludge storage tank 1, the sludge in the sludge storage tank 1 is pumped into a mixing and conditioning box 23 through a sludge concentration sludge inlet pump 21, a PAM medicament in a sludge coagulation doser is pumped into the mixing and conditioning box 23 through a concentration mud coagulant adding pump 41, the sludge in the mixing and conditioning box 23 and the PAM medicament are fully mixed and then are fed into a rotary drum concentrator 2, the sludge which is not fully flocculated in the mixing and conditioning box 23 flows into the sludge storage tank 1, the sludge is re-pumped into the mixing and conditioning box 23 through the sludge concentration sludge inlet pump 21, the sludge and the PAM medicament are mixed and coagulated again and then are discharged into the rotary drum concentrator 2 for rotary drum concentration treatment, the water content of the sludge before the concentration treatment of the rotary drum concentrator 2 is 99.5-99.7%, and the water content of the treated concentrated sludge is less than or equal to 99%. The concentrated sludge discharged by the rotary drum thickener 2 is introduced into the sludge buffer tank 33, after the sludge buffer tank 33 is stored to a certain amount, the concentrated sludge enters the sludge pump 31 through sludge dewatering and is pumped into the spinning dehydrator 3, meanwhile, a PAM medicament in the sludge coagulation chemical dosing device is pumped into the spinning dehydrator 3 through a sludge coagulation agent feeding pump 42 for dewatering, the concentrated sludge and the PAM medicament are mixed and coagulated in the spinning dehydrator 3 to obtain dewatering treatment, dewatered sludge cakes with the water content of 85 +/-2% are obtained after the dewatering treatment, and the dewatered sludge cakes can be carried to sanitary landfill treatment.

The utility model provides a sludge dewatering system can carry out the minimizing to the feedwater mud of water works, rotary drum thickener 2 jointly uses with spinning dewaterer 3, carry out the degree of depth minimizing of mud with the means of "concentration + dehydration", compare in traditional sludge thickening tank, the dewatering system of this application has to take up an area of for a short time, equipment is automatic, the small investment, the time limit for a project is short, easy operation, the power saving, and can also sled dress, so that the emergency treatment of the water works sludge volume increase suddenly.

Example 2:

the difference between the present embodiment and embodiment 1 is that the waterworks sludge dewatering system of the present embodiment is provided with two sludge dewatering paths, and the two sludge dewatering paths are connected in parallel. Referring to fig. 2, in the present embodiment, the sludge storage tank 1 is connected to two sets of rotary drum thickeners 2 and spin dehydrators 3, the two sets of rotary drum thickeners 2 are connected in parallel to the spin dehydrators 3, and two sets of sludge concentration sludge inlet pumps 21, sludge dehydration sludge inlet pumps 31, sludge buffer tanks 33, sludge coagulant adding pumps 41 for concentration, sludge coagulant adding pumps 42 for dehydration, sludge concentration flow meters 22, sludge dehydration flow meters 32, and back washing pipes 5 are correspondingly provided in a matching manner.

In other embodiments, the sludge dewatering path may be provided in a plurality of lines according to the demand for increase in capacity or the demand for emergency in the water plant. The multiple sets of rotary drum thickeners 2 and spin dewaterers 3 can synchronously and rapidly reduce the sludge in the sludge storage tank 1, so that the waterworks have higher sludge reduction treatment efficiency.

The above are all preferred embodiments of the present application, and the present embodiment is only explained for the present application, and the protection scope of the present application is not limited by this, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A sludge dewatering system for a water plant, comprising: store up mud pit (1), sludge concentration and advance dredge pump (21), rotary drum thickener (2), sludge dewatering and advance dredge pump (31) and spin dewaterer (3), the mud that stores up mud pit (1) advances dredge pump (21) through sludge concentration and carries extremely rotary drum thickener (2), rotary drum thickener (2) mud discharge outlet exhaust concentrated sludge passes through sludge dewatering advances dredge pump (31) and carries extremely spin dewaterer (3).

2. The sludge dewatering system of a water works according to claim 1, further comprising a sludge buffer tank (33), wherein the sludge buffer tank (33) is installed between the rotary drum concentrator (2) and the spin dryer (3), and the concentrated sludge is discharged into the sludge buffer tank (33).

3. The sludge dewatering system of the tap water plant according to claim 1, further comprising a coagulant preparation device (4) and a dewatering coagulant dosing pump (42), wherein the coagulant preparation device (4) delivers the coagulant into the spin-on dewaterer (3) through the dewatering coagulant dosing pump (42).

4. The sludge dewatering system of the tap water plant according to claim 1, further comprising a coagulant preparation device (4) and a concentration coagulant dosing pump (41), wherein the coagulant preparation device (4) delivers the coagulant into the drum concentrator (2) through the concentration coagulant dosing pump (41).

5. The sludge dewatering system of the water works, according to claim 4, characterized in that the sludge dewatering system further comprises a mixing and conditioning tank (23), an overflow port of the mixing and conditioning tank (23) is connected with a sludge inlet of the rotary drum thickener (2), a bottom outlet of the mixing and conditioning tank (23) is connected with a top inlet of the sludge storage pool (1), and the coagulant preparation device (4) is connected into the mixing and conditioning tank (23) through a coagulant adding pump (41) for concentration.

6. The sludge dewatering system of a water works according to claim 1, further comprising a backwash pipe (5), the backwash pipe (5) being connected to the rotary drum thickener (2) and the spin dryer (3), respectively.

7. The sludge dewatering system of a waterworks according to claim 1, further comprising a sludge thickening flow meter (22) and a sludge dewatering flow meter (32), wherein the sludge thickening flow meter (22) is installed on a pipe connected to an input end of the drum thickener (2), and the sludge dewatering flow meter (32) is installed on a pipe connected to an input end of the spinning dewaterer (3).

8. The sludge dewatering system of the water supply plant according to claim 1, wherein the sludge concentration sludge inlet pump (21), the rotary drum concentrator (2), the sludge dewatering sludge inlet pump (31) and the spin hydroextractor (3) which are correspondingly connected are a sludge dewatering path, and the sludge dewatering system of the water supply plant is provided with a plurality of sludge dewatering paths which are connected in parallel.