CN105600981A - Seal water system for pump station - Google Patents
Seal water system for pump station Download PDFInfo
- Publication number
- CN105600981A CN105600981A CN201510977318.XA CN201510977318A CN105600981A CN 105600981 A CN105600981 A CN 105600981A CN 201510977318 A CN201510977318 A CN 201510977318A CN 105600981 A CN105600981 A CN 105600981A
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- Prior art keywords
- water
- pump
- pipeline
- inlet end
- water inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/04—Methods or installations for obtaining or collecting drinking water or tap water from surface water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Details Of Reciprocating Pumps (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a seal water system for a pump station. A water outlet end of a water taking pump is connected with a water inlet end of a pipeline mixer through a pipeline; a chemical adding device is connected with the water inlet end of the pipeline mixer through a pipeline; a water outlet end of the pipeline mixer is connected with a water inlet end of a sand filter through a pipeline; a filtered water outlet end of the sand filter is connected with a water inlet end of a stainless steel water tank through a pipeline; a mud water outlet end of the sand filter is connected with a water inlet end of a pump station forebay through a pipeline; a water outlet end of the stainless steel water tank is connected with a water inlet end of a seal water pipe network through a water delivery pump; a water outlet end of the seal water pipe network is connected with a water inlet end of a water pump stuffing box; a water outlet end of the water pump stuffing box is connected with the water inlet end of the pump station forebay through a sewer. The number of the pump stations with application of old seal water systems is not smaller than 50, and if the project can be extended in Shanghai, 15 million yuan can be saved every year on the basis that 0.3 million yuan can be saved by each pump station every year through rough calculation.
Description
Technical field
The sewage disposal system technical field the present invention relates to, pumping plant seal water system specifically, particularly itsSystem syndeton.
Background technology
The Bai Long of Shanghai City Municipal Drainage Co., Ltd. port SB of sewage transport branch company pumping plant has 6 large-scale mixed-flow pumps, this typeNumber water pump has metal (upper cooling water and water pump stuffing box sealing water three place's water-cooled protection systems. Cooling water and sealing water supply water allAdopt tap water supply, bearing cooling water has adopted internal circulation apparatus, and loss still can be accepted. But sealing water is due to operation principleFactor, produced and mixed with sewage, directly enter sewer, cannot reclaim. According to operating statistic analysis, the monthly water of pumping plantAmount is greatly about 1.2 ten thousand tons. Wherein seal water and account for 92%. In the face of so huge water yield waste, such water quality type in ShanghaiThe city of lack of water, obviously and branch company's energy-saving and emission-reduction and the general orientation of walking sustainable development path have very large difference, solve closeThe energy-saving and cost-reducing problem of water shutoff cooling system also becomes the most important thing.
Sealing water is less demanding for water quality, and main order ground is the pressure that ensures sealing water, does not allow sewage from stuffing-boxIn overflow, the solution of water resources problem is relatively easy. According to pumping plant on-site actual situations, except running water, pumping plant also has otherTwo water source, places can utilize, and the one, the sewage of pumping plant, the 2nd, river course, pumping plant side water. Pumping plant sewage is rich in organic matter, locatesReason more complicated, processing cost is higher. Water in river course is as long as sunk fixed and filtered and just can utilize by simple, and treatment process is simple,Processing cost is lower, therefore can adopt river course water as sealing water water source.
Summary of the invention
The object of the present invention is to provide pumping plant seal water system, it adopts river course water as sealing water water source, river course waterAfter processing, utilize independently pipeline, give water pump by booster pump and use, seal water transformation simultaneously, that it is not completeEntirely from original cooling system, spin off, increase valve at former pipeline, former cooling water system is unified and newly done seal water systemKeep apart, in the time that water treatment system is overhauled or broken down, switch in time former cooling water system, can ensure like this waterPump normally moves.
Water treatment system is operated at full capacity (24 hours), and a day processing water yield is 570 tons/day, and this project adopts discontinuous operation,Moving the working time every day is 16 hours, within 8 hours, is stand-by time.
To achieve these goals, technical scheme of the present invention is: pumping plant seal water system, it comprises and is arranged on river course waterThe overflow well at source place, is provided with water pump in this overflow well, and the water side of this water pump is by the water inlet of pipeline and pipe-line mixerEnd connects, and the pipeline that passes through of chemicals dosing plant is connected with the water inlet end of pipe-line mixer, and pipeline is passed through in the water side of pipe-line mixerBe connected with the water inlet end of sand filter, the filtered water water side of sand filter is connected with the water inlet end of stainless steel water tank by pipeline, sandThe silt water water side of filter is connected with the water inlet end of Forebay of Pumping Station by pipeline, and conveying pump is passed through in the water side of stainless steel water tankBe connected with the water inlet end of sealing grid, the sealing water side of grid and the water inlet end of water pump stuffing box are connected, water pump fillerThe water side of letter is connected with the water inlet end of Forebay of Pumping Station by sewer.
The invention discloses pumping plant seal water system, system utilizes river course water to promote by vacuum water pump, first passes throughSand filter flocculation filtration, flows into water tank, stores by water tank, will be from filter, and the impurity bringing out by current is again heavyFixed, water after treatment is again for main pump, thereby reaches the effect of energy-saving and emission-reduction. System adopts a key operation key, after startup,River course water promotes by vacuum water pump, first by sand filter flocculation filtration, flows into water tank, stores by water tank, will be from mistakeIn filter, the impurity bringing out by current is again heavy fixed, processes like this water and substantially can reach requirement, finally by centrifugalBlower pump for pipeline is squeezed into and is newly done in sealing grid, for main pump. Starting and walk lamp step after this key and be---water intaking gate valve is openedOpen---water pump operation---dosing pump operation---water tank carry out moisturizing [water level+2.5m(is with respect to ground elevation) for waterTreatment system stops liquid level, and water level+1.5m(is with respect to ground elevation) be water tank ultra low water level alarm liquid level]--booster pump fortuneOK--booster pump startup--enters main pump (sealing grid by new work)---and completes whole flow process to packing chamber. System adoptsOne key backwashing pump key in case of water pump has precipitation dirt, can automatically be opened a key backwashing water and automatically rush in the time startingWash. System adopts booster pump selective switchgear, identical with water pump occupation mode, frequency of utilization is identical, under manual modeCan switch voluntarily.
Apply not lower 50 of the pumping plant of old seal water system in Shanghai, if this project can be expanded in Shanghai, rootCan save every year 300000 yuan of budgetary estimates according to single seat pumping plant, within 1 year, can save 1,500 ten thousand yuan. The pumping plant of the old seal water system of whole nation applicationEstimate not to be less than 200, if this project can be applied in the whole nation, according to budgetary estimate, can save every year 6000 ten thousand yuan. This projectSuccess is gone into operation, and to energy-saving and emission-reduction, to the sustainable development of water resource, means a great.
The comparison of new-old system expense:
Old seal water system daily consumption expense: 12000 × 3.8 × 92%/30.5=1376 unit.
Novel sealing water system operating cost:
The daily consumption electricity charge: (3 × 12+3.5 × 24+3) × 0.65=80 unit;
Daily consumption medicament expense is used: 25 yuan;
Daily consumption labour cost: 60 yuan;
Source water is collected the charges: 362 × 0.35=127 unit;
Expense adds up to: 80+25+60+127=340 unit;
Can reduce expenses every year: ten thousand yuan of (1376-340) × 30.5 × 12=38.
Approximately 680,000 yuan of Meteorologicals, the cost of substantially recouping the investment in two years.
Brief description of the drawings
Fig. 1 is prior art systems FB(flow block).
Fig. 2 is system flow block diagram of the present invention.
Fig. 3 is process flow diagram of the present invention.
Fig. 4 is water treatment system control principle drawing.
Wherein:
1, overflow well;
2, water pump;
3, pipe-line mixer;
4, chemicals dosing plant;
5, sand filter;
6, stainless steel water tank;
7, Forebay of Pumping Station;
8, conveying pump;
9, sealing grid;
10, water pump stuffing box;
11, sewer.
Detailed description of the invention
With reference to the accompanying drawings, the present invention is further described.
The present invention is pumping plant seal water system, and as shown in fig. 1, it comprises the overflow well 1 that is arranged on water source, river course place, itsBeing different from prior art is: in this overflow well 1, be provided with water pump 2, mix with pipeline by pipeline the water side of this water pump 2The water inlet end of device 3 connects, and the pipeline that passes through of chemicals dosing plant 4 is connected with the water inlet end of pipe-line mixer 3, the going out of pipe-line mixer 3Water end (W.E.) is connected with the water inlet end of sand filter 5 by pipeline, and the filtered water water side of sand filter 5 is by pipeline and stainless steel water tank 6Water inlet end connect, the silt water water side of sand filter 5 is connected with the water inlet end of Forebay of Pumping Station 7 by pipeline, stainless steel water tank 6Water side be connected with the water inlet end of sealing grid 9 by conveying pump 8, seal water side and the water pump stuffing box of grid 910 water inlet end connects, and the water side of water pump stuffing box 10 is connected with the water inlet end of Forebay of Pumping Station 7 by sewer 11.
In the specific implementation, sealing waterpipe, due to the cause of booster pump, has certain pressure, must adopt independent line,Be incorporated to former sealing waterpipe at sealing waterpipe terminal position. Described sealing grid 9 is made up of main line pipeline and tap line,The DN80PP-R pipe that wherein pipe diameter of main line pipeline is 75mm-85mm, the pipe diameter of tap line is 20mm-30mmDN25PP-R pipe. Outdoor section direct-burried is underground, and interior conduit adopts support surface to establish.
In the specific implementation, described water pump 2 adopts immersible pump, and flow Q is 28 ~ 35 tons/hour, and lift H is 8 meters, waterPump power P is 3 kilowatts, considers reliability and regular maintenance, and a side of water pump 2 is also provided with a water pump for subsequent use. Water pumpBe arranged in dump mouth wet well, adopt directly and start.
In the specific implementation, conveying pump is due to needs supercharging river course water, and pipeline distance is longer, water intaking place and water pump stuffing boxBetween pipeline fall difference also larger, determine adopt centrifugal pipe pump, described conveying pump 8 flow Q are 13 ~ 18 tons/hour, lift H is25 meters, pump power P is 3.5 kilowatts, considers equally reliability and regular maintenance, a side of conveying pump 8 be also provided with one for subsequent useConveying pump, the using and the reserved. Conveying pump is arranged on pump house water pump layer, adopts variable frequency starting.
In the specific implementation, described pipe-line mixer 3 places are provided with backwashing pump, and this backwashing pump adopts centrifugal pipelinePump, flow Q is 5 tons/hour, lift H is 20 meters, pump power P is 1.5 kilowatts, a side of backwashing pump be also provided with one standbyWith backwashing pump, the using and the reserved. Backwashing pump is arranged on processor scene, adopts directly and starts.
In the specific implementation, described sand filter 5 adopts quartz sand filter-press, and water treatment amount is 24 tons/hour, entersWaterpipe DN50, outlet conduit DN80, delivery turbidity (NTU)≤5, inner stuffing is quartz sand, material is carbon steel. Filter is adoptedWith the complete sets of products of sky, Jiangsu rain pro-environment group. At the inlet channel pipe laying blender of sand filter, allow flocculant and riverWater fully mixes, and make impurity in river flocculate into bulky grain suspension, and interception is in the quartz sand of filter. Filter usesAfter a period of time, must automatically open backwashing pump, by interceptor in tank, recoil is washed off.
In the specific implementation, the bottom of described stainless steel water tank 6 is outstanding cone downwards, and the cone tip part of cone is provided with oneMotor-driven valve, utilizes the heavy earnest at the bottom of the water pressure discharge outlet in stainless steel water tank 6. Water tank dischargeable capacity be 60 tons (6 meters × 4 meters ×2.5 meters). Water tank basis adopts reinforced concrete structure.
In the specific implementation, the inclined-plane that the bottom of described stainless steel water tank 6 is symmetric, the lowest part shape on two inclined-planesBecome a point end, this place is provided with a motor-driven valve in the point end, utilizes the heavy earnest at the bottom of the water pressure discharge outlet in stainless steel water tank 6. Water tank hasEffect volume is 60 tons (6 meters × 4 meters × 2.5 meters). Water tank basis adopts reinforced concrete structure.
In the specific implementation, described chemicals dosing plant 4 adopts diaphragm type dosing pump, and flow Q is 8 ~ 12 tons/hour. FlocculantAgitator can adopt PC material, approximately 1 ton of volume. Chemicals dosing plant has adopted the complete factory of upper Heiden group Machinery Co., Ltd. productProduct.
In the specific implementation, pipeline all adopts PP-R material pipeline, adopts surface to establish or buried-pipe laying method, and valve adoptsBall valve and butterfly valve, hand-operated valve all adopts stainless steel ball valve, and motor-driven valve adopts wafer type electric butterfly valve.
In the specific implementation, consider that energy-saving and emission-reduction and the project implementation minimize, control system does not adopt PLC to control, andAdopt more direct solenoid control. Whole system is equipped with a stainless steel switch board, and power supply is taken from forebay power cabinet. 1) water intakingPump is according to the liquid level control start-stop pump of water tank, and high water tank is measured available tongue tube ball float. 2) send water booster pump to adopt frequency conversion controlSystem (ABB), regulates pump rotary speed according to pipeline pressure, and pipeline pressure requires to set according to water pump. 3) sand filter backwashing pump, rootThe cleannes of the water flowing out according to backwash, determine backwashing time. 4) water tank motor-driven valve, according to how much sedimentary, passes through the timeController is set a time value, carrys out time switch electrically operated valve, utilizes Water in Water Tank pressure to fall wherein sediment.
Whole system can be manual, also can be automatic. Operate very easyly, general elementary pump station operator can graspDo freely. Change-over switch is dialed to manual position, and every equipment can manually move by separate unit, and change-over switch is dialed to automatic positionPut, can automatically regulate water treatment system running status according to high water tank, water level+2.0 meter (with respect to a ground elevation) is water placeReason system starts liquid level, and water level+2.5 meter (with respect to ground elevation) for water treatment system stops liquid level, and water level+1.5 are meter (relativeIn ground elevation) be water tank ultra low water level alarm liquid level.
The regular job of system and maintenance:
1, carry out fixed point location tour according to the every 2 hours system of inspection tours;
2, regularly (on every Fridays) carries out dosing to chemicals dosing plant.
The scope of examination:
Whether 1, check booster pump ruuning situation, Pressure gauge should be more than 0.2MP, drainage;
2, whether the each indicator lamp of control cabinet is normal;
3, whether cistern water level is too low, whether has low liquid level warning phenomenon;
4, check the ruuning situation of each equipment.
More than show and described general principle of the present invention, principal character and advantage of the present invention. The technology of the industryPersonnel should understand, and the present invention is not restricted to the described embodiments, and the just explanation of describing in above-described embodiment and description originallyThe principle of invention, the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, these changesChange and improve and all fall in the claimed scope of the invention. The claimed scope of the present invention by appending claims andEquivalent defines.
Claims (9)
1. pumping plant seal water system, it comprises the overflow well (1) that is arranged on water source, river course place, it is characterized in that: this overflow well (1)Inside be provided with water pump (2), the water side of this water pump (2) is connected with the water inlet end of pipe-line mixer (3) by pipeline, dosing dressThe pipeline that passes through of putting (4) is connected with the water inlet end of pipe-line mixer (3), and the water side of pipe-line mixer (3) is by pipeline and sandThe water inlet end of filter (5) connects, and the filtered water water side of sand filter (5) connects by the water inlet end of pipeline and stainless steel water tank (6)Connect, the silt water water side of sand filter (5) is connected with the water inlet end of Forebay of Pumping Station (7) by pipeline, the going out of stainless steel water tank (6)Water end (W.E.) is connected with the water inlet end of sealing grid (9) by conveying pump (8), water side and the water pump filler of sealing grid (9)The water inlet end of letter (10) connects, and the water side of water pump stuffing box (10) is the water inlet end with Forebay of Pumping Station (7) by sewer (11)Connect.
2. pumping plant seal water system according to claim 1, is characterized in that: described sealing grid (9) is by main line pipeRoad and tap line form, and wherein the pipe diameter of main line pipeline is 75mm-85mm, and the pipe diameter of tap line is 20mm-30mm。
3. pumping plant seal water system according to claim 1, is characterized in that: described water pump (2) adopts immersible pump, streamAmount Q is 28 ~ 35 tons/hour, and lift H is 8 meters, and a side of water pump (2) is also provided with a water pump for subsequent use.
4. pumping plant seal water system according to claim 1, is characterized in that: described conveying pump (8) flow Q is 13 ~ 18Ton/hour, lift H is 25 meters, and pump power P is 3.5 kilowatts, and a side of conveying pump (8) is also provided with a conveying pump for subsequent use.
5. pumping plant seal water system according to claim 1, is characterized in that: described pipe-line mixer (3) is located to be provided withBackwashing pump, this backwashing pump adopts centrifugal pipe pump, and flow Q is 5 tons/hour, and lift H is 20 meters, and pump power P is 1.5Kilowatt, a side of backwashing pump is also provided with a backwashing pump for subsequent use.
6. pumping plant seal water system according to claim 1, is characterized in that: described sand filter (5) adopts quartz sand to pressPower filter, water treatment amount is 24 tons/hour, inlet channel DN50, outlet conduit DN80.
7. pumping plant seal water system according to claim 1, is characterized in that: the bottom of described stainless steel water tank (6) isOutstanding cone downwards, the cone tip part of cone is provided with a motor-driven valve, utilizes heavy at the bottom of the water pressure discharge outlet in stainless steel water tank (6)Earnest.
8. pumping plant seal water system according to claim 1, is characterized in that: the bottom of described stainless steel water tank (6) isSymmetrical inclined-plane, the lowest part on two inclined-planes forms a point end, and this place is provided with a motor-driven valve in the point end, utilizes stainless steel waterHeavy earnest at the bottom of water pressure discharge outlet in case (6).
9. pumping plant seal water system according to claim 1, is characterized in that: described chemicals dosing plant (4) adopts diaphragm typeDosing pump, flow Q is 8 ~ 12 tons/hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510977318.XA CN105600981A (en) | 2015-10-22 | 2015-12-23 | Seal water system for pump station |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015208184465 | 2015-10-22 | ||
| CN201520818446 | 2015-10-22 | ||
| CN201510977318.XA CN105600981A (en) | 2015-10-22 | 2015-12-23 | Seal water system for pump station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105600981A true CN105600981A (en) | 2016-05-25 |
Family
ID=55981413
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510977318.XA Pending CN105600981A (en) | 2015-10-22 | 2015-12-23 | Seal water system for pump station |
| CN201521084188.9U Expired - Fee Related CN205313252U (en) | 2015-10-22 | 2015-12-23 | Pump station seal water system |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521084188.9U Expired - Fee Related CN205313252U (en) | 2015-10-22 | 2015-12-23 | Pump station seal water system |
Country Status (1)
| Country | Link |
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| CN (2) | CN105600981A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372063A (en) * | 2018-12-14 | 2019-02-22 | 青岛润通源水务工程设备有限责任公司 | A kind of no negative pressure pipe network pressurizing current stabilization supply equipment |
| CN111285495A (en) * | 2020-02-28 | 2020-06-16 | 舟山中远海运重工有限公司 | Integrated sewage collecting and treating device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105600981A (en) * | 2015-10-22 | 2016-05-25 | 上海市城市排水有限公司 | Seal water system for pump station |
| CN110498533A (en) * | 2019-08-13 | 2019-11-26 | 济南瑞安源环境科技有限公司 | A kind of intelligent frequency-conversion cooling system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5926671A (en) * | 1982-08-06 | 1984-02-10 | Mitsubishi Heavy Ind Ltd | Water sealing method for shaft seal part of pump |
| CN2198426Y (en) * | 1994-07-15 | 1995-05-24 | 王春志 | Liquid closing water pump shaft seal device |
| WO2006135944A1 (en) * | 2005-06-21 | 2006-12-28 | Erwin Kopp | Radial sealing device |
| CN102730886A (en) * | 2012-08-01 | 2012-10-17 | 南京松本水处理技术有限公司 | River way water purification and water resource supply system as well as working method thereof |
| CN102764737A (en) * | 2011-05-03 | 2012-11-07 | 克朗斯股份公司 | Seal water system |
| CN104404930A (en) * | 2014-11-28 | 2015-03-11 | 张波 | River mouth power generation system for river emptying into sea |
| CN205313252U (en) * | 2015-10-22 | 2016-06-15 | 上海市城市排水有限公司 | Pump station seal water system |
-
2015
- 2015-12-23 CN CN201510977318.XA patent/CN105600981A/en active Pending
- 2015-12-23 CN CN201521084188.9U patent/CN205313252U/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5926671A (en) * | 1982-08-06 | 1984-02-10 | Mitsubishi Heavy Ind Ltd | Water sealing method for shaft seal part of pump |
| CN2198426Y (en) * | 1994-07-15 | 1995-05-24 | 王春志 | Liquid closing water pump shaft seal device |
| WO2006135944A1 (en) * | 2005-06-21 | 2006-12-28 | Erwin Kopp | Radial sealing device |
| CN102764737A (en) * | 2011-05-03 | 2012-11-07 | 克朗斯股份公司 | Seal water system |
| CN102730886A (en) * | 2012-08-01 | 2012-10-17 | 南京松本水处理技术有限公司 | River way water purification and water resource supply system as well as working method thereof |
| CN104404930A (en) * | 2014-11-28 | 2015-03-11 | 张波 | River mouth power generation system for river emptying into sea |
| CN205313252U (en) * | 2015-10-22 | 2016-06-15 | 上海市城市排水有限公司 | Pump station seal water system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372063A (en) * | 2018-12-14 | 2019-02-22 | 青岛润通源水务工程设备有限责任公司 | A kind of no negative pressure pipe network pressurizing current stabilization supply equipment |
| CN111285495A (en) * | 2020-02-28 | 2020-06-16 | 舟山中远海运重工有限公司 | Integrated sewage collecting and treating device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN205313252U (en) | 2016-06-15 |
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