CN113620554A - Comprehensive treatment system for dredging and drying river channel - Google Patents
Comprehensive treatment system for dredging and drying river channel Download PDFInfo
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- CN113620554A CN113620554A CN202010380920.6A CN202010380920A CN113620554A CN 113620554 A CN113620554 A CN 113620554A CN 202010380920 A CN202010380920 A CN 202010380920A CN 113620554 A CN113620554 A CN 113620554A
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- buffer tank
- sludge
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- outlet
- primary buffer
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- 238000001035 drying Methods 0.000 title abstract description 8
- 239000010802 sludge Substances 0.000 claims abstract description 60
- 230000003750 conditioning effect Effects 0.000 claims abstract description 25
- 238000005188 flotation Methods 0.000 claims abstract description 21
- 239000006228 supernatant Substances 0.000 claims abstract description 12
- 239000008394 flocculating agent Substances 0.000 claims abstract description 8
- 239000010865 sewage Substances 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 239000003814 drug Substances 0.000 claims description 25
- 238000003756 stirring Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- 238000000926 separation method Methods 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000001376 precipitating effect Effects 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000003311 flocculating effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 229940037003 alum Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004094 preconcentration Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/125—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using screw filters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/148—Combined use of inorganic and organic substances, being added in the same treatment step
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/28—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physical Water Treatments (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a comprehensive treatment system for dredging and drying a river channel, which is characterized in that river channel sludge is wrapped, is sucked and lifted by a suction dredger and is connected with a primary buffer tank through a movable compression-resistant conveying hose, a supernatant outlet above the primary buffer tank is connected with a sewage inlet of a shallow ion air flotation machine, clear water of the shallow ion air flotation machine is discharged into the river channel, and a scum outlet of the shallow ion air flotation machine is connected with an inlet of a secondary buffer tank; a sludge outlet of the primary buffer tank is connected with an inlet of the secondary buffer tank, a supernatant outlet of the secondary buffer tank is connected with a sewage inlet of the shallow ion air flotation machine, a sludge outlet of the secondary buffer tank is connected with a sludge conditioning tank, a sludge outlet of the sludge conditioning tank is connected with a screw squeezing separator, and a separation liquid outlet of the screw squeezing separator is connected with an inlet of the primary buffer tank; the flocculating agent is added into the primary buffer tank and the sludge conditioning tank, and the system can efficiently treat and dispose the sludge, so that the labor is saved.
Description
Technical Field
The invention mainly relates to the technical field of river basin treatment, in particular to a comprehensive treatment system for dredging and drying a river channel.
Background
With the rapid development of urban construction, the urban river serves as an important component of an urban water system, and the river is silted and drained unsmooth, so that the life and property safety of people can be threatened directly. The urban river silt has high water content and complex components, and most of the urban river silt contains pollutants such as heavy metals, and if the urban river silt is not well treated, the urban river silt not only can cause serious secondary pollution, but also can occupy a large amount of land resources.
At present, a conventional dredging method is adopted, a river channel is intercepted, a construction cofferdam is built, open water in a dredging river section is discharged, a manual excavator is adopted on site to load silt into a tank car, and the tank car is transported to a disposal and stacking point outside the tank car. The method has a plurality of defects, and the sludge in the river channel is exposed, so that the bottom sludge can generate odor, pollute the surrounding environment and influence the life of residents.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a comprehensive treatment system for dredging and drying a river channel.
The purpose of the invention can be realized by the following technical scheme:
a comprehensive treatment system for dredging and drying a river channel comprises a primary buffer tank, a shallow ion air flotation machine, a secondary buffer tank, a sludge conditioning tank and a screw squeezing separator, wherein river channel sludge is lifted by a cutter suction type dredging ship through cutter suction and is connected with the primary buffer tank through a movable pressure-resistant conveying hose, a supernatant outlet above the primary buffer tank is connected with a sewage inlet of the shallow ion air flotation machine, clear water of the shallow ion air flotation machine is discharged into the river channel, and a scum outlet of the shallow ion air flotation machine is connected with an inlet of the secondary buffer tank;
a sludge outlet of the primary buffer tank is connected with an inlet of a secondary buffer tank, a supernatant outlet of the secondary buffer tank is connected with a sewage inlet of a shallow ion air flotation machine, a sludge outlet of the secondary buffer tank is connected with a sludge conditioning tank, a sludge outlet of the sludge conditioning tank is connected with a screw squeezing separator, and a separated liquid outlet of the screw squeezing separator is connected with an inlet of the primary buffer tank;
and flocculating agents are added into the primary buffer tank and the sludge conditioning tank.
Preferably, the primary buffer tank adds a flocculating agent into the tank through a medicine dissolving and adding unit.
Preferably, dissolve medicine and add the medicine unit and include medicament bucket, mixer, motor, measuring pump, the motor is connected to the mixer, and the mixer setting is in the medicament bucket, the medicament bucket passes through the measuring pump and connects one-level buffer pool.
Preparing a combined medicament (PAC/PAM) in a medicament barrel according to a certain proportion, uniformly stirring, and then respectively pumping into a buffer tank and a sludge conditioning tank by a metering pump.
Preferably, a stirring device is arranged inside the sludge conditioning tank, and the sludge conditioning tank is connected with a medicine dissolving and adding unit.
The invention has the beneficial effects that:
the system can efficiently treat the sludge, improve the normal living environment of residents around the river channel, bring obvious environmental benefits and social benefit environment for the society, and can treat the sludge simply and quickly and save manpower.
Drawings
Fig. 1 is a flow chart of a system architecture of the present patent application.
Detailed Description
The technical scheme of the invention is further described by combining the attached drawings:
a comprehensive treatment system for dredging and drying a river channel comprises a primary buffer tank, a shallow ion air flotation machine, a secondary buffer tank, a sludge conditioning tank and a screw squeezing separator, wherein river channel sludge is lifted by a cutter suction type dredging ship through cutter suction and is connected with the primary buffer tank through a movable pressure-resistant conveying hose, a supernatant outlet above the primary buffer tank is connected with a sewage inlet of the shallow ion air flotation machine, clear water of the shallow ion air flotation machine is discharged into the river channel, and a scum outlet of the shallow ion air flotation machine is connected with an inlet of the secondary buffer tank;
a sludge outlet of the primary buffer tank is connected with an inlet of a secondary buffer tank, a supernatant outlet of the secondary buffer tank is connected with a sewage inlet of a shallow ion air flotation machine, a sludge outlet of the secondary buffer tank is connected with a sludge conditioning tank, a sludge outlet of the sludge conditioning tank is connected with a screw squeezing separator, and a separated liquid outlet of the screw squeezing separator is connected with an inlet of the primary buffer tank;
and flocculating agents are added into the primary buffer tank and the sludge conditioning tank.
A small cutter suction dredger utilizes a reamer arranged at the front section of a reamer rest to grind underwater mud stones to form a mud-water mixture, then sucks underwater mud from a mud head at the front section of the reamer rest through a centrifugal mud pump, and discharges the underwater mud to a mud discharging place through an in-ship suction pipe, a mud pump and a mud discharging pipe, thereby completing dredging operation. The movable pressure-resistant transportation hose conveys the muddy water mixture to an appointed place on the shore for subsequent corresponding treatment and disposal.
And collecting sludge, adding a flocculating agent into the first-stage buffer tank through a dissolved medicine dosing unit, mixing, uniformly precipitating, pumping the bottom precipitated sludge to a sludge conditioning tank, and automatically flowing the supernatant to a shallow ion air flotation machine.
The medicine dissolving and adding unit comprises a medicine barrel, a stirrer, a motor, a metering pump and the like, a combined medicine (PAC/PAM) is prepared in the medicine barrel according to a certain proportion and is uniformly stirred, and then the medicine dissolving and adding unit is respectively pumped into a buffer tank and a sludge conditioning tank through the metering pump.
And the supernatant passing through the primary buffer tank and the secondary buffer tank realizes the integrated operation of flocculation, air flotation, skimming and mud scraping in a shallow ion air flotation machine. And the treated clear effluent is used for supplementing water to the river, and the skimmed scum enters a secondary buffer tank.
The sludge conditioning tank is provided with a stirring device, and under the stirring effect, the combined medicament (such as PAC/PAM) and the river sludge are quickly and uniformly mixed. Colloid in the river course silt loses stability under the effect of coagulating agent, and mutual coalescence forms the alum album, has increaseed the collision probability between the flocculating constituent simultaneously under the effect of stirring, forms big flocculating constituent gradually, is favorable to deposiing silt and gets into the screw rod squeezer, and subsequent silt of being convenient for is squeezed. In order to further concentrate the settled sludge, it is arranged to enter a screw press separator.
The screw squeezing separator comprises a pretreatment unit and a squeezing unit. The sludge separated from the sludge conditioning tank is pumped into a screw press with preconcentration for concentration and is dehydrated under the action of pressure difference, and finally, the pressure borne by sludge mixed liquor is continuously increased due to the fact that the screw pitch between screw rotary sheets of a squeezing unit is gradually reduced, dehydration is started under the action of the pressure difference, and water flows out from a filtering gap between a fixed ring and a movable ring. The water content of the sludge after the pressing treatment can reach about 85 percent, and the amount of the sludge after drying is greatly reduced.
River silt promotes river silt through small-size cutter-suction type dredging ship cutter-suction, through pump sending to one-level buffer pool, dissolves in the medicine goes out the medicine mouth of adding the medicine unit and is connected to one-level buffer pool in, carries out misce bene, even, deposits, then the bottom deposits silt and gets into second grade buffer pool, and the supernatant flows to shallow layer ion air supporting unit automatically, and the clear water that clarifies out is used for the river course moisturizing. And (4) allowing the scum skimmed by the shallow ion air flotation machine to enter a secondary buffer tank, and mixing, homogenizing and precipitating again. The supernatant fluid automatically flows to a shallow layer ion air flotation machine for circular treatment, the bottom precipitated sludge is pumped to a sludge conditioning pool, a flocculating agent is added into the sludge conditioning pool for mixing, uniform and precipitation, and the sludge concentrated and precipitated at the bottom is conveyed to a screw type squeezing separator by a pump for further squeezing and dewatering. The water content of the sludge after the pressing treatment can reach about 85 percent. The dried sludge amount is greatly reduced, so that the number of transport vehicles for outward transportation and disposal is reduced. In addition, the generated squeezed separation liquid is discharged to the primary buffer tank for mixing, homogenizing and precipitating, and bottom precipitated sludge enters the secondary buffer tank for circular treatment, so that the recovery rate of the sludge is greatly improved. And the supernatant is subjected to circulating treatment, and the clarified clear water is used for replenishing water in the riverway, so that the water replenishing rate of the riverway is improved.
Finally, it should be noted that:
the method may be carried out and its application may be carried out by those skilled in the art with reference to the disclosure herein, and it is expressly intended that all such alternatives and modifications as would be apparent to those skilled in the art are deemed to be included within the invention. While the method and application of the present invention have been described in terms of preferred embodiments, it will be apparent to those of ordinary skill in the art that variations and modifications in the method and application of the invention as described herein may be made and equivalents employed without departing from the spirit and scope of the invention.
Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention, and the appended claims are intended to cover such modifications and equivalents as fall within the true spirit and scope of the invention.
Claims (4)
1. The utility model provides a comprehensive treatment system of river course desilting and mummification which characterized in that: the system comprises a primary buffer tank, a shallow ion air flotation machine, a secondary buffer tank, a sludge conditioning tank and a screw squeezing separator, wherein river sludge is lifted by a cutter suction type desilting boat through cutter suction, and is connected with the primary buffer tank through a movable pressure-resistant conveying hose;
a sludge outlet of the primary buffer tank is connected with an inlet of a secondary buffer tank, a supernatant outlet of the secondary buffer tank is connected with a sewage inlet of a shallow ion air flotation machine, a sludge outlet of the secondary buffer tank is connected with a sludge conditioning tank, a sludge outlet of the sludge conditioning tank is connected with a screw squeezing separator, and a separated liquid outlet of the screw squeezing separator is connected with an inlet of the primary buffer tank;
and flocculating agents are added into the primary buffer tank and the sludge conditioning tank.
2. An integrated processing system as defined in claim 1, wherein: and the primary buffer tank adds a flocculating agent into the tank through a medicine dissolving and adding unit.
3. An integrated processing system as defined in claim 2, wherein: the medicine dissolving and adding unit comprises a medicine barrel, a stirrer, a motor and a metering pump, wherein the stirrer is connected with the motor, the stirrer is arranged in the medicine barrel, and the medicine barrel is connected with a primary buffer tank through the metering pump.
4. An integrated processing system as defined in claim 1, wherein: the sludge conditioning tank is internally provided with a stirring device and is connected with a medicine dissolving and adding unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010380920.6A CN113620554A (en) | 2020-05-08 | 2020-05-08 | Comprehensive treatment system for dredging and drying river channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010380920.6A CN113620554A (en) | 2020-05-08 | 2020-05-08 | Comprehensive treatment system for dredging and drying river channel |
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| Publication Number | Publication Date |
|---|---|
| CN113620554A true CN113620554A (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010380920.6A Pending CN113620554A (en) | 2020-05-08 | 2020-05-08 | Comprehensive treatment system for dredging and drying river channel |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1343628A (en) * | 2000-09-18 | 2002-04-10 | 中国科学院生态环境研究中心 | Ship-type air float method and equipment for removing algae |
| CN102079553A (en) * | 2010-12-02 | 2011-06-01 | 广州益方田园环保科技开发有限公司 | Shallow layer flotation machine for industrial wastewater treatment and treatment process thereof |
| CN203530056U (en) * | 2013-10-18 | 2014-04-09 | 杭州浩蓝环境工程技术有限公司 | River water purification and recycling system |
| CN103896474A (en) * | 2014-03-13 | 2014-07-02 | 南京道科环境科技有限公司 | Efficient dehydrating method for sludge |
| CN105293845A (en) * | 2015-10-26 | 2016-02-03 | 广州立白企业集团有限公司 | Treatment method for sludge reduction |
| CN105731688A (en) * | 2016-03-08 | 2016-07-06 | 中国矿业大学 | Equipment for treating lake water suspended substances and eutrophic air flotation fillers and method thereof |
| CN207451875U (en) * | 2017-10-27 | 2018-06-05 | 东元环保设备(福州)有限公司 | A kind of river, lake pollution source enrichment thickening-purification technology device |
| CN207918659U (en) * | 2018-05-03 | 2018-09-28 | 北京天仪百康科贸有限公司 | A kind of hydraulic engineering device for treating sludge |
| CN209242891U (en) * | 2018-08-14 | 2019-08-13 | 辽宁中绿环境工程有限公司 | A kind of sludge dewatering treatment system |
| CN110451766A (en) * | 2019-07-17 | 2019-11-15 | 湖南君诚绿康环境治理有限公司 | Riverbed sludge pollution sources cut down equipment |
| CN212451121U (en) * | 2020-05-08 | 2021-02-02 | 无锡蓝湾资源再生科技有限公司 | Comprehensive treatment system for dredging and drying river channel |
-
2020
- 2020-05-08 CN CN202010380920.6A patent/CN113620554A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1343628A (en) * | 2000-09-18 | 2002-04-10 | 中国科学院生态环境研究中心 | Ship-type air float method and equipment for removing algae |
| CN102079553A (en) * | 2010-12-02 | 2011-06-01 | 广州益方田园环保科技开发有限公司 | Shallow layer flotation machine for industrial wastewater treatment and treatment process thereof |
| CN203530056U (en) * | 2013-10-18 | 2014-04-09 | 杭州浩蓝环境工程技术有限公司 | River water purification and recycling system |
| CN103896474A (en) * | 2014-03-13 | 2014-07-02 | 南京道科环境科技有限公司 | Efficient dehydrating method for sludge |
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| CN105731688A (en) * | 2016-03-08 | 2016-07-06 | 中国矿业大学 | Equipment for treating lake water suspended substances and eutrophic air flotation fillers and method thereof |
| CN207451875U (en) * | 2017-10-27 | 2018-06-05 | 东元环保设备(福州)有限公司 | A kind of river, lake pollution source enrichment thickening-purification technology device |
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| CN110451766A (en) * | 2019-07-17 | 2019-11-15 | 湖南君诚绿康环境治理有限公司 | Riverbed sludge pollution sources cut down equipment |
| CN212451121U (en) * | 2020-05-08 | 2021-02-02 | 无锡蓝湾资源再生科技有限公司 | Comprehensive treatment system for dredging and drying river channel |
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