CN100368311C - Sedimentation tank and wastewater sedimentation method - Google Patents

Sedimentation tank and wastewater sedimentation method Download PDF

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Publication number
CN100368311C
CN100368311C CNB2005100021719A CN200510002171A CN100368311C CN 100368311 C CN100368311 C CN 100368311C CN B2005100021719 A CNB2005100021719 A CN B2005100021719A CN 200510002171 A CN200510002171 A CN 200510002171A CN 100368311 C CN100368311 C CN 100368311C
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water
pond
settling tank
flow
channel
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CN1803650A (en
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陈海明
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ATAL ENGINEERING Ltd
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ATAL ENGINEERING Ltd
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Abstract

The present invention discloses fluid treating and precipitating equipment and technology. The purpose is to provide a sedimentation tank and a sedimentation method with high treatment efficiency for effectively avoiding density flow. The sedimentation tank comprises a water tank, a water inlet channel, an overflow weir and a water outlet channel, wherein the water inlet channel is a water inlet distribution channel. A plurality of water distribution holes are arranged on the water inlet distribution channel for waste water to flow into the water tank. The sedimentation tank also comprises a skirt plate, wherein the skirt plate is arranged in the water tank. A space section is limited between the skirt plate and the inner wall of the water tank. The upper part of the space section is communicated with the water distribution hole, and the lower part of the space section is communicated with a water body at the lower part of the water tank. A flow slowing plate is arranged at the lower part of the water distribution hole to lower the flow rate of the waste water. The method is used for treating the waste water by using the sedimentation tank.

Description

A kind of settling tank and wastewater sedimentation method
Technical field
The present invention relates to a kind of liquid treatment settling apparatus and technology, particularly, relate to a kind of being used in water and the wastewater treatment process, in particular for precipitation with divide suspended solids in dried up the settling tank of purifying waste water to be provided and to use this settling tank to carry out the wastewater sedimentation method of wastewater treatment.
Background technology
In field of waste water treatment, traditional theory is thought, when using detention tank to dispose of sewage, sewage can be evenly and is passed through settling tank fifty-fifty, in this process, heavy mud or useless solid precipitation form mud at the bottom of dropping to the pond, and sludge blanket takes out at the bottom of by the collector pond, the water that purifies through precipitation flows through overflow weir, flows into water exit through the overflow weir upper end and then discharges.
But the analysis of practical situation in the industrial practice and above-mentioned traditional theory and prediction are come in and gone out very big.Discover that waterpower mobile situation has decisive influence to sedimentation effect in the settling tank.The too fast meeting of water inlet flow velocity of sewage causes serious density flow phenomenon, reason is that the proportion of into water current is more great than the ratio of the clear water in the settling tank, and natural faster flow velocity adds that into the inflow position of water current is higher, and the clear water that the water inlet current can drive in the settling tank forms eddy current (jet phenomenon).The eddy current discharge that produces often exceeds more than 10 times of flooding velocity, hinders the sedimentation effect of mud thereby serious eddy current causes mud at the bottom of the settling tank to be kicked up.
Summary of the invention
One object of the present invention is to overcome deficiency of the prior art, provide a kind of can obtain optimum flow rate, waste water can be imported in the best settling region and make water exit, with the settling tank more efficiently of thorough elimination density flow phenomenon away from possible sinuous flow district.
Another object of the present invention is to overcome deficiency of the prior art, provide a kind of can obtain optimum flow rate, waste water can be imported in the best settling region and make water exit, with the method for wastewater sedimentation more efficiently of thorough elimination density flow phenomenon away from possible sinuous flow district.
To achieve these goals, the technical solution used in the present invention is:
A kind of settling tank comprises pond, water entry, overflow weir and water exit, and wherein, described water entry is water inlet cloth aquaporin, and this water inlet cloth aquaporin is provided with a plurality of water distributing pores that flow into the pond for waste water; Described settling tank also comprises skirtboard, this skirtboard is arranged in the pond, and and pool inner wall between limit a space segment, the top of this space segment communicates with described water distributing pore, the bottom communicates with the water body of bottom, pond, described skirtboard extends downward the position near the bottom in pond, is used for making the water that enters described space segment to flow into the pond from the bottom of approaching the pond.
Moreover, below described water distributing pore, be provided with the unhurried current plate that can reduce the waste water flow velocity.Like this, can further reduce flow velocity, thereby eliminate the eddy current of waste water in the pond to greatest extent.
Moreover described water exit and water inlet cloth aquaporin are arranged on the position of the opposite side in pond or same side.
Moreover described pond is square, and described water exit and above-mentioned water inlet cloth aquaporin are parallel to each other.
Moreover described settling tank comprises the pond of a plurality of linear array, and the side in the pond of above-mentioned a plurality of linear array is provided with main waterwater entrance water channel, this main waterwater entrance water channel and described water inlet water distribution channel connection; Opposite side in the pond of above-mentioned a plurality of linear array is provided with main wastewater outlet water channel, and this main wastewater outlet water channel is communicated with described water exit.
A kind of wastewater sedimentation method comprises following steps:
A. waste water is entered the branch flow step in the space segment that communicates with the bottom water body in the pond of a settling tank via a plurality of water distributing pores of a water inlet cloth aquaporin;
B. flow into waste water steady sedimentary precipitate and separate step in the pond in described pond via the bottom of approaching basin bottom of described space segment;
C. the overflow step that enters a water exit via an overflow weir on top, described pond of the clean waste water after precipitate and separate.
Moreover this method comprises also that between above-mentioned A step and B step the waste water that will flow in the described space segment flows slowly plate to slow down the unhurried current step of flow velocity via one.
Owing to adopted above-mentioned settling tank and wastewater sedimentation method, the present invention can be with the flow velocity design of the best, waste water is steadily imported best settling region, and make water exit, thereby bring the separation efficiency of more good sedimentation effect and Geng Gao away from possible sinuous flow district.
The invention will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the local structure schematic top plan view of the embodiment of the invention one;
Fig. 2 is along the partial schematic sectional view of A-A direction among Fig. 1;
Fig. 3 is along the partial schematic sectional view of B-B direction among Fig. 1;
Fig. 4 is along the partial schematic sectional view of C-C direction among Fig. 1;
Fig. 5 is the edge of the embodiment of the invention two and the partial schematic sectional view of embodiment one C-C direction equidirectional.
Embodiment
As shown in Figures 1 to 4, the embodiment of the invention one described settling tank comprises pond 1, bottom 2, front bulkhead 3, aft end bulkhead 4, left side wall 5, right side wall 6, water entry 7, water distributing pore 8, skirtboard 9, unhurried current plate 10, water exit 11, overflow weir 12, main waterwater entrance water channel 13, main wastewater outlet water channel 14 and water entry outer side wall 15.
Wherein, described water entry 7 is water inlet cloth aquaporin, and it is arranged at the top of inner face of the left side wall 5 in pond 1.This water inlet cloth aquaporin is provided with a plurality of water distributing pores 8, uses flowing in the pond 1 for waste water.Because waste water flows in the pond 1 by the very little water distributing pore 8 in a plurality of apertures, can effectively disperse the flow velocity of current and reduction current.Therefore avoided current disturbance that concentrate in the pond and large-scale to a certain extent.
Preferably, described water entry 7 identical at each locational cross section can be reduced the complexity that adds man-hour like this and reduced cost.
Certainly, needs such as water distributing pore 8 flow equilibriums according to water entry 7 different positionss, those skilled in the art can be according to spirit of the present invention, with the big and less shape of the cross section of tail end of the cross section that replaces with water entry 7 head ends of water entry 7, the perhaps big and less shape of the cross section of head end of the cross section of tail end, and other shape that needs.
Preferably, be arranged at arrangement mode between each water distributing pore 8 on each water entry 7 for equidistantly arranging.Be easier to like this water yield from water entry 7 different positionss inflow pond 1 is carried out equilibrium control, thereby be more conducive to the even and steady of described space segment 16 interior current.Equally, those skilled in the art can arrange in conjunction with actual other non-equidistance that the arrangement mode between each water distributing pore 8 need be replaced with according to spirit of the present invention.
Described skirtboard 9 is arranged in the pond 1, and extends to position near the bottom 2 in pond 1 by the lower ends downward of the outer side wall 15 of water entry 7.Like this, between the left side wall 5 in pond 1 and skirtboard 9, formed a space segment 16.The top of this space segment 16 communicates with described water distributing pore 8, and its underpart communicates with the water body of 1 bottom, pond.Thereby the waste water that described water distributing pore 8 is flowed down flows into pond 1 via the guiding of described space segment 16 from the bottom of approaching pond 1.Rise reposefully, heavy mud or useless solid then reverse precipitation form mud at the bottom of dropping to the pond again.A kind of like this mode is easier to realize good separating effect.
Described unhurried current plate 10 be arranged in the described space segment 16 and be positioned at described water distributing pore 8 apertures under.Its role is to will be from described water distributing pore 8 effusive current further decentralized and slow down its flow velocity.Can ensure that like this current that flow to pond 1 from described space segment 16 bottoms are even mild laminar flow.Avoid sedimentary mud or useless solid on 1 bottom 2, pond are taken up.
Right side wall 6 inner faces relative that described water exit 11 is arranged at the pond with water entry 7.Like this, the waste water that is flow to pond 1 lower left quarter by described space segment 16 bottoms moves gently to the water exit 11 that is positioned at pond 1 upper right quarter, crosses described overflow weir 12 and enter in the described water exit 11 after fully precipitating, separating.
A side identical that as shown in Figure 5, also described water exit 11 can be arranged at the pond with water entry 7.Such as being arranged at (embodiment of the invention two) on the described water entry outer side wall 15.Like this, the waste water that is flow to pond 1 lower left quarter by described space segment 16 bottoms flows forward gently, rise again after receiving the stopping of pond 1 right side wall 6 then, then counterclockwise reflux to the water exit 11 that is positioned at pond 1 upper left quarter, cross described overflow weir 12 through the abundant precipitation in longer path, after separating and enter in the described water exit 11.
Preferably, described pond 1 is square.And described water exit 11 and above-mentioned water entry 7 are parallel to each other.To obtain in pond 1, obtaining steadily gentle laminar flow effect.Help simultaneously when the linear array of a plurality of ponds, saving floor occupying area, effectively utilize the space.
Moreover the side in the pond 1 of above-mentioned a plurality of linear array is provided with main waterwater entrance water channel 13, and this main waterwater entrance water channel 13 is communicated with described water entry 7; Opposite side in the pond 1 of above-mentioned a plurality of linear array is provided with main wastewater outlet water channel 14, and this main wastewater outlet water channel is communicated with described water exit.Like this, can gather a plurality of ponds easily, improve the treatment capacity and the processing efficiency of waste water greatly.
About the wastewater sedimentation method, in fact in to the explanation of settling tank description arranged above-mentioned more.Understand present method all sidedly for the ease of more clear, existing complete description is as follows:
With waste water via the branch flow step in the described water entry 7 that described main waterwater entrance water channel 13 enters with this main waterwater entrance water channel 13 communicates;
2. waste water is entered the branch flow step in the described space segment 16 that communicates with the bottom water body in the pond 1 of settling tank via a plurality of water distributing pores 8 of described water entry 7;
3. will flow into waste water in the described space segment 16 via described unhurried current plate 10 to slow down the unhurried current step of flow velocity;
4. flow into waste water steady sedimentary precipitate and separate step in pond 1 in described pond 1 via the bottom of described space segment 16;
5. the overflow step that enters described water exit 11 via the described overflow weir 12 on 1 top, described pond of the clean waste water after precipitate and separate.
6. the waste water of overflow being gone into described water exit 11 enters the wastewater collection step of described main wastewater outlet water channel.
Need refer to, alleged " waste water " of the present invention comprises water, sewage and other any liquid.

Claims (10)

1. a settling tank comprises pond, water entry, overflow weir and water exit, and described water entry is water inlet cloth aquaporin, and this water inlet cloth aquaporin is provided with a plurality of water distributing pores that flow into the pond for waste water; Described settling tank also comprises skirtboard, this skirtboard is arranged in the pond, and and pool inner wall between limit a space segment, the top of this space segment communicates with described water distributing pore, the bottom communicates with the water body of bottom, pond, it is characterized in that described skirtboard extends downward the position near the bottom in pond, be used for making the water that enters described space segment to flow into the pond from the bottom of approaching the pond.
2. settling tank as claimed in claim 1 is characterized in that, is provided with the unhurried current plate that can reduce the waste water flow velocity below described water distributing pore.
3. settling tank as claimed in claim 2 is characterized in that, described water exit and water inlet cloth aquaporin are arranged on the position of the opposite side in pond or same side.
4. settling tank as claimed in claim 3 is characterized in that, described pond is square, and described water exit and above-mentioned water inlet cloth aquaporin are parallel to each other.
5. settling tank as claimed in claim 4 is characterized in that described settling tank comprises the pond of a plurality of linear array, and the side in the pond of above-mentioned a plurality of linear array is provided with main waterwater entrance water channel, this main waterwater entrance water channel and described water inlet water distribution channel connection; Opposite side in the pond of above-mentioned a plurality of linear array is provided with main wastewater outlet water channel, and this main wastewater outlet water channel is communicated with described water exit.
6. as any one described settling tank of claim 1-5, it is characterized in that the arrangement mode between described each water distributing pore on the water inlet cloth aquaporin is equidistantly to arrange.
7. as any one described settling tank of claim 1-5, it is characterized in that the cross-sectional area of each position of described water inlet cloth aquaporin is identical.
8. wastewater sedimentation method comprises following steps:
A. waste water is entered the branch flow step in the space segment that communicates with the bottom water body in the pond of a settling tank via a plurality of water distributing pores of a water inlet cloth aquaporin;
B. flow into waste water steady sedimentary precipitate and separate step in the pond in described pond via the bottom of approaching basin bottom of described space segment;
C. the overflow step that enters a water exit via an overflow weir on top, described pond of the clean waste water after precipitate and separate.
9. wastewater sedimentation method as claimed in claim 8 is characterized in that, this method comprises also that between above-mentioned A step and B step the waste water that will flow in the described space segment flows slowly plate to slow down the unhurried current step of flow velocity via one.
10. wastewater sedimentation method as claimed in claim 9 is characterized in that, comprises also that before above-mentioned A step one enters branch flow step in the described water inlet cloth aquaporin that communicates with this main waterwater entrance water channel with waste water via a main waterwater entrance water channel; And the waste water of overflow being gone into described water exit after above-mentioned C step enters the wastewater collection step of a main wastewater outlet water channel.
CNB2005100021719A 2005-01-14 2005-01-14 Sedimentation tank and wastewater sedimentation method Active CN100368311C (en)

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2345869B1 (en) * 2009-04-03 2011-06-20 Centro De Investigaciones Submarinas, S.L. CLOSED WATER CIRCUIT SYSTEM FOR SUCTION DRAGES.
CN102139170A (en) * 2010-12-02 2011-08-03 李恩德 Sedimentation tank attached with switch door
CN105999776A (en) * 2016-07-13 2016-10-12 王灿 Sludge layer filtering and settling pond and method thereof
CN106477844A (en) * 2016-10-27 2017-03-08 马士龙 A kind of excrement material dewaterer
CN106984071A (en) * 2017-04-24 2017-07-28 浙江省环境监测中心 Effluent settling chamber and wastewater sedimentation method
CN110314424A (en) * 2019-07-30 2019-10-11 江苏通用环保集团有限公司 A kind of side water outlet peripheral drive sludge scraper and scrape mud method
CN110566274B (en) * 2019-09-25 2020-12-01 温州路家工业产品设计有限公司 Tunnel construction drainage equipment

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4059529A (en) * 1976-05-17 1977-11-22 Sybron Corporation Baffle for water or sewage settling tanks
US4253965A (en) * 1974-10-10 1981-03-03 Pielkenrood-Vinitex B.V. Purification device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253965A (en) * 1974-10-10 1981-03-03 Pielkenrood-Vinitex B.V. Purification device
US4059529A (en) * 1976-05-17 1977-11-22 Sybron Corporation Baffle for water or sewage settling tanks

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