CN113877250A - Self-circulation high-density sedimentation tank and water treatment method - Google Patents
Self-circulation high-density sedimentation tank and water treatment method Download PDFInfo
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- CN113877250A CN113877250A CN202111296931.7A CN202111296931A CN113877250A CN 113877250 A CN113877250 A CN 113877250A CN 202111296931 A CN202111296931 A CN 202111296931A CN 113877250 A CN113877250 A CN 113877250A
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- 238000004062 sedimentation Methods 0.000 title claims abstract description 110
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000010802 sludge Substances 0.000 claims abstract description 188
- 238000005189 flocculation Methods 0.000 claims abstract description 96
- 230000016615 flocculation Effects 0.000 claims abstract description 96
- 239000002351 wastewater Substances 0.000 claims abstract description 31
- 238000010992 reflux Methods 0.000 claims abstract description 11
- 239000000470 constituent Substances 0.000 claims abstract description 10
- 230000003311 flocculating effect Effects 0.000 claims abstract description 10
- 238000005276 aerator Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000005273 aeration Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000007787 solid Substances 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005352 clarification Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/30—Control equipment
- B01D21/32—Density control of clear liquid or sediment, e.g. optical control ; Control of physical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/30—Control equipment
- B01D21/34—Controlling the feed distribution; Controlling the liquid level ; Control of process parameters
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to a self-circulation high-density sedimentation tank and a water treatment method, wherein the self-circulation high-density sedimentation tank comprises a negative pressure control switch circuit module, and the self-circulation high-density sedimentation tank comprises: comprises a plurality of flocculation tanks, an inclined tube sedimentation tank, a sludge balance tank and a sludge pump room; the water inlet end of the inclined tube sedimentation tank is connected with the water outlet end at the lower part of the flocculation tank and is used for settling a flocculating constituent formed after the flocculation treatment of the wastewater; the inclined tube sedimentation tank is communicated with the sludge balance tank through a sludge outlet pipe and is used for forming sludge from the sedimentation flocculation body and separating clear water; a sludge suction pipe of the sludge pump room is connected to a sludge suction pit at the bottom of the sludge balance tank and is used for sucking high-concentration sludge; and a sludge discharge pipe of the sludge pump room is connected to the flocculation tank and is used for refluxing the high-concentration sludge so as to improve the flocculation capacity in the primary flocculation tank. The technical scheme of the invention has the beneficial effects that: the treatment effect of sludge backflow is improved, and the stability of sludge at the bottom of the sedimentation tank is also kept.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to a self-circulation high-density sedimentation tank and a water treatment method.
Background
Sedimentation basins have recently been widely used in water treatment plants as water treatment structures for removing suspended substances from water. The sedimentation tanks which are applied more at present mainly comprise a horizontal flow sedimentation tank, a radial flow sedimentation tank, a vertical flow sedimentation tank, an inclined plate (inclined tube) sedimentation tank, an accelerated clarification tank (mechanical and hydraulic), a pulse clarification tank, a high-density sedimentation tank and the like. However, two extremes exist for each type of sedimentation tank sludge discharge system: one extreme is that the concentration of sludge water is too low due to excessive sludge discharge, and the other extreme is that the quality of effluent water of the sedimentation tank is influenced due to too little sludge discharge. In order to avoid the two extreme phenomena, operation managers of a water treatment plant carry out a great deal of research work on a sludge discharge system of a sedimentation tank, and the purpose is to ensure that the sludge discharge system stably runs between the two extremes. However, the sludge discharge system is affected by various factors such as raw water quantity, water quality, dosage, sludge discharge time and solid content of sludge discharge water, and therefore, in the actual operation process, stable operation of the sludge discharge system is difficult to guarantee.
The current high-density sedimentation tank technology mainly has the following problems: 1. the operation parameters are multiple, the management is complex, and the coordination difficulty between the dosing parameters and the sludge discharge parameters is large. 2. And an independent sludge storage area is not provided, and the sludge liquid level and the sludge concentration are not easy to control. 3. The concentration of dissolved oxygen in the bottom mud in the sedimentation tank is low, the biological activity of the sludge is weak, and the biological treatment effect is not obvious. 4. From the viewpoint of construction cost and construction safety, the depth of the bottom plate of the high-density sedimentation tank is limited, so that the sludge storage volume at the bottom of the sedimentation tank is limited.
Disclosure of Invention
According to the problems in the prior art, a self-circulation high-density sedimentation tank and a water treatment method are provided, and the problems of complex management, difficult control and the like in the prior art are solved.
The technical scheme specifically comprises the following steps:
a self-circulation high-density sedimentation tank comprises a plurality of flocculation tanks, an inclined tube sedimentation tank, a sludge balance tank and a sludge pump room;
the flocculation tank comprises a primary flocculation tank and a secondary flocculation tank, wherein a wastewater inlet pipe is arranged on the primary flocculation tank, and the secondary flocculation tank is arranged on two sides of the primary flocculation tank; the water inlet end of the secondary flocculation tank is connected with the water inlet end of the upper part of the primary flocculation tank;
the water inlet end of the inclined tube sedimentation tank is connected with the water outlet ends of the lower parts of the first-stage flocculation tank and the second-stage flocculation tank and is used for settling floccules formed after the wastewater flocculation treatment;
the inclined tube sedimentation tank is communicated with the sludge balance tank through a sludge outlet pipe and is used for settling the flocculating constituent to form sludge and separating clear water;
a sludge suction pipe of the sludge pump room is connected to a sludge suction pit at the bottom of the sludge balance tank and is used for sucking the high-concentration sludge;
and a sludge discharge pipe of the sludge pump room is connected to the flocculation tank and is used for refluxing the high-concentration sludge so as to improve the flocculation capacity in the primary flocculation tank.
Preferably, the flocculation tank is internally provided with:
the guide cylinder is used for accommodating wastewater;
and the flocculation stirrer is arranged in the guide cylinder and is used for stirring flocculated bodies formed after the flocculation treatment of the wastewater.
Preferably, the method further comprises the following steps:
the finger-shaped groove is arranged above the inclined tube sedimentation tank, and the water inlet end of the finger-shaped groove is connected to the clean water outlet end of the inclined tube sedimentation tank and is used for transmitting the clean water separated from the inclined tube sedimentation tank;
and the clear water tank is arranged above the inclined tube sedimentation tank, and the water inlet end of the clear water tank is connected to the water outlet end of the finger-shaped groove.
Preferably, the inclined tube sedimentation tank is internally provided with:
the inclined tube is arranged between the inclined tube sedimentation tank and the finger-shaped groove and is used for accessing clean water;
the sludge discharge hopper is arranged at the bottom of the inclined tube sedimentation tank;
and the central transmission mud scraper is arranged at the bottom of the inclined tube sedimentation tank and is used for stirring the flocculating constituent.
Preferably, the mud outlet pipe is provided with:
the sludge concentration meter is used for monitoring the sludge concentration in the sludge outlet pipe;
and the valves are arranged at two ends of the sludge concentration meter.
Preferably, the sludge balance tank is internally provided with:
and the aerator is used for carrying out aeration treatment on the wastewater discharged from the inclined tube sedimentation tank.
Preferably, the aerator is a centrifugal submersible aerator.
Preferably, be provided with in the sludge pump room:
the sludge reflux pump is used for refluxing the high-concentration sludge to the primary flocculation tank;
and the dehydrator feed pump is used for dehydrating the high-concentration sludge and discharging the high-concentration sludge so as to control the sludge concentration in the inclined tube sedimentation tank.
In this embodiment, the present invention further includes a water treatment method, which employs the self-circulation high-density sedimentation tank, and the water treatment method includes:
inputting the wastewater into a flocculation tank for flocculation treatment to obtain wastewater mixed with floccules;
inputting the wastewater mixed with the flocculating constituent into an inclined tube sedimentation tank, and separating clear water and sludge;
inputting the sludge into a sludge balancing tank to obtain high-concentration sludge;
and returning the high-concentration sludge to a flocculation tank by using a sludge return pump so as to perform subsequent flocculation treatment on the wastewater.
Preferably, the method further comprises a process of controlling the sludge concentration in the sludge balancing tank, and specifically comprises the following steps:
when the reading of the sludge concentration meter exceeds a first preset threshold value, controlling a feed pump of the dehydrator to start;
and when the reading of the sludge concentration meter exceeds a second preset threshold value, controlling the feeding pump of the dewatering machine to be closed.
The technical scheme of the invention has the beneficial effects that: the high-density sedimentation tank is mainly used for enhancing the flocculation sedimentation effect by controlling the sludge backflow of the sedimentation tank and carrying out the combined addition of a plurality of medicaments. The medicament is added to enable suspended matters in water to form large floccules, the density of the floccules is increased, the solid concentration of the flocculation reaction tank is increased by the returned high-concentration sludge, and the process of contact flocculation is strengthened. The sedimentation zone adopts the inclined plate sedimentation principle, the sludge at the bottom of the tank is further improved in solid content through the concentration sludge scraping equipment, the treatment effect of sludge backflow is improved, and the stability of the sludge at the bottom of the sedimentation tank is also kept.
Drawings
Embodiments of the present invention will now be described more fully hereinafter with reference to the accompanying drawings. The drawings are, however, to be regarded as illustrative and explanatory only and not as restrictive of the scope of the invention.
FIG. 1 is a schematic diagram of the upper layer structure of a self-circulation high-density sedimentation tank according to the present invention.
FIG. 2 is a schematic view of the lower layer structure of a self-circulation high-density sedimentation tank according to the present invention.
Fig. 3 is a cross-sectional view a-a of fig. 1.
Fig. 4 is a cross-sectional view of B-B in fig. 1.
Fig. 5 is a cross-sectional view of C-C in fig. 1.
Fig. 6 is a cross-sectional view of D-D in fig. 1.
FIG. 7 is a schematic flow chart of a water treatment method according to the present invention.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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 the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
Referring to fig. 1-6, the present embodiment provides a self-circulation high-density sedimentation tank, which includes a plurality of flocculation tanks 1, an inclined tube sedimentation tank 2, a sludge balancing tank 3, and a sludge pump room 4;
the flocculation tank 1 comprises a primary flocculation tank and a secondary flocculation tank, wherein a wastewater inlet pipe is arranged on the primary flocculation tank, and the two sides of the primary flocculation tank are provided with the secondary flocculation tanks; the water inlet end of the secondary flocculation tank is connected with the water inlet end of the upper part of the primary flocculation tank;
the water inlet end of the inclined tube sedimentation tank 2 is connected with the water outlet ends of the lower parts of the first-stage flocculation tank and the second-stage flocculation tank and is used for settling floccules formed after the wastewater flocculation treatment;
the inclined tube sedimentation tank 2 is communicated with the sludge balance tank 3 through a sludge outlet pipe 9 and is used for forming sludge from the sedimentation flocculation and separating clear water;
a sludge suction pipe of the sludge pump room 4 is connected to a sludge suction pit at the bottom of the sludge balancing tank 3 and is used for sucking high-concentration sludge;
the sludge discharge pipe of the sludge pump room 4 is connected to the primary flocculation tank and is used for returning high-concentration sludge so as to improve the flocculation capacity in the primary flocculation tank.
Specifically, a blow-down pipe is also arranged in the inclined-tube sedimentation tank 2.
The mud pipe of sludge pump room 4 is with high concentration mud backward flow to one-level flocculation basin, make it play the effect of contact flocculation, the floc in the high concentration mud that flows back promptly is as the medium, and the granule collision, the coalescence that newly got into the flocculation basin, suitable mud backward flow can improve the utilization efficiency of the flocculating agent of enrichment in waste water, reduce and throw the volume, can increase the concentration of aquatic particulate matter simultaneously, be convenient for granule gathering, subside to improve the precipitation effect behind the floc entering sedimentation tank.
The flocculation tank 1 is internally provided with:
a guide cylinder 20 for containing wastewater;
and the flocculation stirrer 5 is arranged in the guide cylinder and is used for stirring flocculated bodies formed after the wastewater flocculation treatment.
The self-circulation high-density sedimentation tank in this embodiment further includes:
the finger-shaped groove 18 is arranged above the inclined tube sedimentation tank 2, and the water inlet end of the finger-shaped groove is connected to the clean water outlet end of the inclined tube sedimentation tank 2 and is used for transmitting the clean water separated from the inclined tube sedimentation tank 2;
and the clean water tank 19 is arranged above the inclined tube sedimentation tank 2, and the water inlet end of the clean water tank is connected to the water outlet end of the finger-shaped groove 18.
The inclined tube sedimentation tank 2 is internally provided with:
the inclined tube 7 is arranged between the inclined tube sedimentation tank 2 and the finger-shaped groove 18 and is used for accessing clean water;
the sludge discharge hopper 6 is arranged at the bottom of the inclined tube sedimentation tank 2;
and the central transmission mud scraper 8 is arranged at the bottom of the inclined tube sedimentation tank 2 and is used for stirring flocculating constituents.
The mud outlet pipe 9 is provided with:
the sludge concentration meter 11 is used for monitoring the sludge concentration in the sludge outlet pipe 9;
two valves 10 are arranged at two ends of the sludge concentration meter.
The sludge discharge hopper 6 at the bottom of the inclined tube sedimentation tank 2 is communicated with the sludge balance tank 3 through a sludge discharge pipe 9, so that the inclined tube sedimentation tank 2 and the sludge balance tank 3 become communicated containers, meanwhile, openings at two ends are communicated with the atmosphere, and automatic liquid level balance is realized through the liquid pressure balance principle.
The sludge balance tank 3 is internally provided with:
and the aerator 12 is used for carrying out aeration treatment on the wastewater discharged from the inclined tube sedimentation tank 2.
Specifically, the aerator 12 is a centrifugal submersible aerator.
Be provided with in the sludge pump room 4:
a sludge reflux pump 14 for refluxing the high-concentration sludge to the primary flocculation tank;
and a dehydrator feed pump 16 for dehydrating and discharging the high-concentration sludge to control the sludge concentration in the inclined tube sedimentation tank 3.
Specifically, the flow of the sludge reflux pump 14 is 3-5% of the water inflow of the flocculation tank 1.
In this embodiment, waste water is divided both sides and is got into the second grade flocculation basin after the inlet tube input one-level flocculation basin, and the waste water after the flocculation treatment gets into pipe chute sedimentation tank 2 from the lower part delivery port in flocculation basin, and the flocculating constituent deposits on the mud bucket 6 of bottom of the pool, and the clear water of separation then gets into clear water groove 19 from the clear water delivery port of pipe chute sedimentation tank 2 top via finger groove 18 to by clear water groove 19 with its input in the subsequent water treatment flow in order to carry out further water treatment.
Further, the pipe chute sedimentation tank 2 is communicated with the sludge balance tank 3, a sludge suction pipe in the sludge pump room 4 sucks sludge from a sludge suction pit at the bottom of the pipe chute sedimentation tank 2 and returns to the flocculation tank 1 through a sludge reflux pump 14, a dehydrator feed pump 16 in the sludge pump room 4 is also connected to the sludge suction pipe, and the dehydrator feed pump 16 performs on-off control according to the sludge concentration monitored by a sludge concentration meter 11 in the sludge outlet pipe 9 so as to control the sludge concentration in the sludge balance tank 3.
Referring to fig. 7, the present invention further includes a water treatment method using the self-circulation high-density sedimentation tank, the water treatment method including:
s100, inputting the wastewater into a flocculation tank 1 for flocculation treatment to obtain wastewater mixed with floccules;
s200, inputting the wastewater mixed with the flocculating constituent into an inclined tube sedimentation tank 2, and separating clear water and sludge;
s300, inputting the sludge into a sludge balancing tank 3 to obtain high-concentration sludge;
and S400, returning the high-concentration sludge to the flocculation tank 1 by using a sludge return pump 14 to perform subsequent flocculation treatment on the wastewater.
The water treatment mode in this embodiment further includes a process of controlling the sludge concentration in the sludge balancing tank, and specifically includes:
when the reading of the sludge concentration meter 11 exceeds a first preset threshold value, controlling a feed pump 16 of the dewatering machine to start;
when the reading of the sludge concentration meter 11 does not exceed the second preset threshold, the dehydrator feed pump 16 is controlled to be turned off.
Specifically, the first preset threshold is, for example, 3%, and the second preset threshold is, for example, 2%.
It should be noted that the first preset threshold and the second preset threshold are both values obtained according to an actual processing process, and can be adjusted according to experience of a worker, which is not limited in the present invention.
For example, the sludge concentration meter 11 is mainly used for monitoring the sludge concentration in the sludge outlet pipe 9, and is one of the factors for controlling the sludge feeding pump, when the concentration is too high (more than 3%), the dehydrator feeding pump 16 is started, and when the concentration is too low (less than 2%), the dehydrator feeding pump 16 is stopped, so that the operation of the dehydrator feeding pump 16 is controlled, and the sludge concentration in the sludge balancing tank 3 is kept between 2% and 3%.
The liquid level of the sludge at the bottom of the inclined tube sedimentation tank 2 and the sludge concentration have relevance:
for example, after flocculation sedimentation, the self-circulation high-density sedimentation tank in this embodiment generates Δ M ═ Σ x of dry sludge, the system discharges Δ M ═ Σ y of dry sludge by the dewaterer feed pump, and the bottom of the inclined tube sedimentation tank 2 has a sludge accumulation area volume V1The sludge volume of the sludge discharge hopper 6 is V2The volume of the sludge balance tank 3 is V3There is an average sludge concentration value CnSo that C isn×(V1+V2+V3)＝Σx-Σy。
Where Σ x ═ x1+x2……+xn，xnRepresents the amount of mud produced on the n-th day, y1+y2……+yn，ynRepresenting the amount of sludge discharged on day n.
The dry sludge amount generated by the flocculation precipitation is related to the water quality of inlet water, the dosing amount and the flocculation precipitation effect, the empirical calculation can be carried out according to the turbidity, the chromaticity and the dosing amount of the inlet water, and the turbidity of the inlet water is related to the concentration C0 of the inlet water, so that the working time of the feeding pump 16 of the dehydrator can be adjusted and controlled according to the change of the concentration C0 of the inlet water every day in one year. So that xnAnd ynAs equal as possible, the value of Σ x- Σ y is stable after n days of system operation.
The amount x of dry mud generated during the operation of the system every day firstly causes the volume V of the mud accumulation area1Variation, V1And (4) multiplying A by h, wherein A is the bottom area of the inclined tube sedimentation tank 2, and h is the height of the sludge accumulation area. The sludge concentration Cn is thus related to the sludge accumulation zone height.
The play mud pipe 9 facial make-up mud concentration meter 11 that sets up between mud bucket 6 and sludge balance pond 3 mainly plays the effect of monitoring mud concentration Cn, and too high or low excessively when Cn can control the operation of hydroextractor feed pump, adjusts the height in long-pending mud district and the mud concentration in the pipe chute balance pond 2, guarantees all the time that there is stable high concentration mud to flow back to flocculation basin 1.
The technical scheme of the invention has the beneficial effects that: the high-density sedimentation tank is mainly used for enhancing the flocculation sedimentation effect by controlling the sludge backflow of the sedimentation tank and carrying out the combined addition of a plurality of medicaments. The medicament is added to enable suspended matters in water to form large floccules, the density of the floccules is increased, the solid concentration of the flocculation reaction tank is increased by the returned high-concentration sludge, and the process of contact flocculation is strengthened. The sedimentation zone adopts the inclined plate sedimentation principle, the sludge at the bottom of the tank is further improved in solid content through the concentration sludge scraping equipment, the treatment effect of sludge backflow is improved, and the stability of the sludge at the bottom of the sedimentation tank is also kept.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. A self-circulation high-density sedimentation tank is characterized by comprising a plurality of flocculation tanks, an inclined tube sedimentation tank, a sludge balance tank and a sludge pump room;
the flocculation tank comprises a primary flocculation tank and a secondary flocculation tank, wherein a wastewater inlet pipe is arranged on the primary flocculation tank, and the secondary flocculation tank is arranged on two sides of the primary flocculation tank; the water inlet end of the secondary flocculation tank is connected with the water inlet end of the upper part of the primary flocculation tank;
the water inlet end of the inclined tube sedimentation tank is connected with the water outlet ends of the lower parts of the first-stage flocculation tank and the second-stage flocculation tank and is used for settling floccules formed after the wastewater flocculation treatment;
the inclined tube sedimentation tank is communicated with the sludge balance tank through a sludge outlet pipe and is used for settling the flocculating constituent to form sludge and separating clear water;
a sludge suction pipe of the sludge pump room is connected to a sludge suction pit at the bottom of the sludge balance tank and is used for sucking the high-concentration sludge;
and a sludge discharge pipe of the sludge pump room is connected to the flocculation tank and is used for refluxing the high-concentration sludge so as to improve the flocculation capacity in the primary flocculation tank.
2. The self-circulating high density sedimentation tank of claim 1, wherein the flocculation tank is provided with:
the guide cylinder is used for accommodating wastewater;
and the flocculation stirrer is arranged in the guide cylinder and is used for stirring flocculated bodies formed after the flocculation treatment of the wastewater.
3. The self-circulating high density sedimentation tank of claim 1, further comprising:
the finger-shaped groove is arranged above the inclined tube sedimentation tank, and the water inlet end of the finger-shaped groove is connected to the clean water outlet end of the inclined tube sedimentation tank and is used for transmitting the clean water separated from the inclined tube sedimentation tank;
and the clear water tank is arranged above the inclined tube sedimentation tank, and the water inlet end of the clear water tank is connected to the water outlet end of the finger-shaped groove.
4. The self-circulating high density sedimentation tank of claim 3, wherein the inside of the inclined tube sedimentation tank is provided with:
the inclined tube is arranged between the inclined tube sedimentation tank and the finger-shaped groove and is used for accessing clean water;
the sludge discharge hopper is arranged at the bottom of the inclined tube sedimentation tank;
and the central transmission mud scraper is arranged at the bottom of the inclined tube sedimentation tank and is used for stirring the flocculating constituent.
5. The self-circulating high density sedimentation tank of claim 1, wherein the sludge discharge pipe is provided with:
the sludge concentration meter is used for monitoring the sludge concentration in the sludge outlet pipe;
and the valves are arranged at two ends of the sludge concentration meter.
6. The self-circulating high density sedimentation tank of claim 1, wherein the sludge balance tank is provided with:
and the aerator is used for carrying out aeration treatment on the wastewater discharged from the inclined tube sedimentation tank.
7. The self-circulating high density sedimentation tank of claim 6, wherein the aerator is a centrifugal submersible aerator.
8. The self-circulating high density sedimentation tank of claim 1, wherein the sludge pump room is provided with:
the sludge reflux pump is used for refluxing the high-concentration sludge to the primary flocculation tank;
and the dehydrator feed pump is used for dehydrating the high-concentration sludge and discharging the high-concentration sludge so as to control the sludge concentration in the inclined tube sedimentation tank.
9. A water treatment using the self-circulating high density sedimentation tank according to any one of claims 1 to 8, the water treatment comprising:
inputting the wastewater into a flocculation tank for flocculation treatment to obtain wastewater mixed with floccules;
inputting the wastewater mixed with the flocculating constituent into an inclined tube sedimentation tank, and separating clear water and sludge;
inputting the sludge into a sludge balancing tank to obtain high-concentration sludge;
and returning the high-concentration sludge to a flocculation tank by using a sludge return pump so as to perform subsequent flocculation treatment on the wastewater.
10. The water treatment method according to claim 9, further comprising a process of controlling the sludge concentration in the sludge balancing tank, specifically comprising:
when the reading of the sludge concentration meter exceeds a first preset threshold value, controlling a feed pump of the dehydrator to start;
and when the reading of the sludge concentration meter exceeds a second preset threshold value, controlling the feeding pump of the dewatering machine to be closed.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117756253A (en) * | 2024-02-22 | 2024-03-26 | 龙南市祥安材料有限公司 | Mixed feed liquid continuous thickening, enriching and separating method based on large-diameter tube sedimentation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS644208A (en) * | 1987-06-25 | 1989-01-09 | Fuji Electric Co Ltd | Sludge discharge controller at sedimentation basin |
| CN102659227A (en) * | 2012-05-03 | 2012-09-12 | 绍兴市制水有限公司曹娥江分公司 | Middle-set type high density sediment water purification tank and purification technology thereof |
| CN206767733U (en) * | 2017-05-08 | 2017-12-19 | 西安西热水务环保有限公司 | A kind of coagulating sedimentation reactor automatic mud removing system with sludge reflux |
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2021
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| JPS644208A (en) * | 1987-06-25 | 1989-01-09 | Fuji Electric Co Ltd | Sludge discharge controller at sedimentation basin |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117756253A (en) * | 2024-02-22 | 2024-03-26 | 龙南市祥安材料有限公司 | Mixed feed liquid continuous thickening, enriching and separating method based on large-diameter tube sedimentation |
| CN117756253B (en) * | 2024-02-22 | 2024-05-31 | 龙南市祥安材料有限公司 | Mixed feed liquid continuous thickening, enriching and separating method based on large-diameter tube sedimentation |
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