CN102674585A - Combined enhanced treatment process for low-turbidity high-alga raw water - Google Patents
Combined enhanced treatment process for low-turbidity high-alga raw water Download PDFInfo
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- CN102674585A CN102674585A CN201110060414XA CN201110060414A CN102674585A CN 102674585 A CN102674585 A CN 102674585A CN 201110060414X A CN201110060414X A CN 201110060414XA CN 201110060414 A CN201110060414 A CN 201110060414A CN 102674585 A CN102674585 A CN 102674585A
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Abstract
The invention discloses a combined enhanced treatment process for low-turbidity high-alga raw water. The treatment process is characterized in that according to raw water, the turbidity in winter is about 5NTU, and temperature less than 5 DEG C, or one liter of raw water contains more than one million algae in summer, and the treatment process comprises the following steps of: settling under the conventional condition by using a flocculation horizontal sedimentation tank or a high-efficiency sedimentation tank, performing air floatation by using an air floatation tank to remove algae, allowing outlet water to flow through an ultra filter membrane further to reduce turbidity and remove algae, adjusting storage by using a clear water tank, and feeding into a water distribution network by using a water feeding pump house. According to the low-turbidity and high-alga characteristics of the water quality of the raw water, the conventional coagulating sedimentation, air floatation, filter and ultra filtration processes are optimized and combined, and the utilization of geothermal resources of plant areas is fully considered, so that an enhanced conventional treatment system is formed. The combined process has the advantages that used land can be saved, the process can be optimized, the geothermal resources can be fully utilized, the production management can be simplified, and the water quality of the outlet water has obvious advantages.
Description
Technical field
A kind of water treatment combination reinforcing process of the present invention for relating in the water supply engineering; Specifically a kind of low turbid algae concentrated feeding water makes up strengthening treatment process, hangs down target turbid and the efficient processing of high algae employing combination reinforcement conventional processing realization in summer to former water winter low temperature.
Background technology
China's surface water quality differs greatly, and is that the intractability of low turbid algae concentrated feeding water of representative is not second to high ammonia nitrogen and high organism micro polluted source with lake and large reservoir wherein.Winter low turbid during the coagulating sedimentation weak effect, cause the settling tank delivery turbidity sometimes even be higher than influent turbidity, increase the weight of the burden of filtration process; Algae during the summer high algae in the former water can't be removed through deposition and air-float technology fully, gets into to cause filter material surface to stop up behind the filter tank and filtering layer penetrates, and causes algae entering clear-water reservoir and pipe network.
At present; Adopt general conventional treatment process to low turbid algae concentrated feeding water as the waterworks of drinking water source; When winter turbidity about 5NTU and temperature be lower than 5 ℃, summer algae surpass 1,000,000/when rising; Be difficult to the effluent water quality standard that reaches new, need make up and strengthen the conventional processing measure.Nearest raising along with water quality standard for drinking water; The output water turbidity day by day comes into one's own as the important controlling index of water quality of dispatching from the factory in some areas; Zhejiang Province modernization water factory standard requires turbidity to carry to 0.1NTU, and existing process combination will reach high water outlet like this and require difficulty higher.
Summary of the invention
The purpose of this invention is to provide a kind of low turbid algae concentrated feeding water combination strengthening treatment process; Be suitable for winter turbidity about 5NTU and temperature be lower than 5 ℃, summer algae surpass 1,000,000/liter low turbid algae concentrated feeding water treatment process, factors such as solution algae, turbidity and temperature variation are to the influence of whole art breading effect.
To achieve these goals; Technical scheme of the present invention is: a kind of low turbid algae concentrated feeding water combination strengthening treatment process; It is characterized in that when former water turbidity in winter about 5NTU and temperature be lower than 5 ℃ or summer algae surpass under 1,000,000/liter the normal condition; Treatment process comprises: adopt flocculation horizontal sedimentation tank or efficient sedimentation tank to precipitate earlier; Use the air flotation pool air floatation alga removing then, water outlet is further removed turbidity and algae through the ultra-filtration membrane group, sends into the distribution system of water supply by the conveying pump room after regulating and storing through clean water basin again.When higher or precipitated outlet water effect is relatively poor at raw water turbidity, can behind the air flotation pool air floatation alga removing, filter, further remove turbidity and algae by the ultra-filtration membrane group again through homogeneous filtering material air-water backwashing sand filter or security personnel's strainer.In order to improve treatment effect; In the low turbid former water technology of winter low temperature; Elder generation heats former water, improves the coagulating sedimentation treatment effect through improving water temperature, and concrete treatment process comprises: former water precipitates through entering flocculation horizontal sedimentation tank or efficient sedimentation tank after the heat riser raising water temperature earlier; Precipitated outlet water is further removed turbidity and algae through the ultra-filtration membrane group then, and water outlet is sent into the distribution system of water supply by the conveying pump room after regulating and storing through clean water basin.When plant area has geothermal energy resources to utilize, the underground heat temperature elevation system is set, directly adopt underground heat that former water is heated.
The characteristic that the present invention is directed to the low turbid high algae of raw water quality is optimized combination to conventional coagulating sedimentation, air supporting, filtration and ultrafiltration technology; And take into full account plant area's geothermal energy resources utilization; Form and strengthen the conventional processing system; Have more complete and dispatch film pre-treating technology flexibly than existing technology, guaranteeing that working cost is more economized under the effluent quality condition.The advantage of this combination process is and can saves the area, and optimizes flow process, makes full use of geothermal energy resources, simplifies production management, and to guaranteeing that effluent quality has remarkable advantages.
Description of drawings
Fig. 1 is the low turbid algae concentrated feeding water treatment process synoptic diagram of normal condition of the present invention.
Fig. 2 is for utilizing process modification synoptic diagram under the geothermal energy resources condition.
Fig. 3 is a underground heat temperature elevation system synoptic diagram.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further description.
The present invention is a kind of low turbid algae concentrated feeding water combination strengthening treatment process.Former water 1 adopts flocculation horizontal sedimentation tank 2 or efficient sedimentation tank 3 to precipitate earlier under the general condition; Use air flotation pool 4 air floatation alga removings then; Water outlet is further removed turbidity and algae through ultra-filtration membrane group 7, sends into the distribution system of water supply 10 by conveying pump room 9 after regulating and storing through clean water basin 8 again.When higher or precipitated outlet water effect is relatively poor at raw water turbidity; Can be behind air flotation pool 4 air floatation alga removings; Filter through homogeneous filtering material air-water backwashing sand filter 5 or security personnel's strainer 6; Further remove turbidity and algae by ultra-filtration membrane group 7 again, water outlet is sent into the distribution system of water supply 10 by conveying pump room 9 after regulating and storing through clean water basin 8.In the winter time; In order to improve treatment effect; Can before flocculation horizontal sedimentation tank 2 or efficient sedimentation tank 3, add and when plant area has geothermal energy resources to utilize, underground heat temperature elevation system 11 is set by heating unit; Directly adopt underground heat that former water is heated, if not then can heat former water through other modes.Concrete treatment process can be optimized for: get into flocculation horizontal sedimentation tank 2 behind former water logical earlier heating raising water temperature to 5 ~ 15 ℃ or efficient sedimentation tank 3 precipitates; Use air flotation pool 4 air floatation alga removings then; Then get into homogeneous filtering material air-water backwashing sand filter 5 or 6 filtrations of security personnel's strainer; Further remove turbidity and algae through ultra-filtration membrane group 7 again, water outlet is sent into the distribution system of water supply 10 by conveying pump room 9 after regulating and storing through clean water basin 8.Certainly, the lower or precipitated outlet water effect of raw water turbidity also can surmount air flotation pool 4 and homogeneous filtering material air-water backwashing sand filter 5 or security personnel's strainer 6 when better, directly precipitated outlet water is inserted ultra-filtration membrane group 7 and handle.
In the process combination; (whether the visual raw water quality test of general potassium permanganate and powder activated carbon decision need add, and all the other medicaments all need add, with reference to adding pharmaceutical quantities: the about 2mg/l of the dosage of chlorine to add chlorine or dioxide peroxide 12, potassium permanganate (composite salt) 13, powder activated carbon 14, alum 15 and coagulant aids 16 before flocculation horizontal sedimentation tank 2 or the efficient sedimentation tank 3; The about 1mg/l of the dosage of dioxide peroxide; About 1～the 2mg/l of the dosage of potassium permanganate, the about 5～10mg/l of the dosage of powder activated carbon, the about 20～30mg/l of the dosage of alum; Coagulant aids can adopt PAM, dosage about 0.1～0.2mg/l); (flocculating aids can adopt Poly aluminum Chloride (PAC), dosage about 3～5mg/l) to add flocculating aids 17 before homogeneous filtering material air-water backwashing sand filter 5 or the security personnel's strainer 6; Add chlorine or dioxide peroxide 12 sterilizations before the clean water basin 8.(the about 2～3mg/l of the dosage of chlorine, the dosage of dioxide peroxide about 1～2mg/l).
When plant area had geothermal energy resources to utilize, the underground heat temperature elevation system was made up of water inlet pipe 18, heat exchanger tube 19, rising pipe 20, water inlet shutdown valve 21, water outlet shutdown valve 22, flushing water intaking valve 23 and flushing outlet valve 24.Concrete structure is: this underground heat temperature elevation system comprises and is embedded in subterranean multichannel heat exchanger tube 19; One end of this multichannel heat exchanger tube 19 is connected with water inlet pipe 18; The other end of this multichannel heat exchanger tube is connected to flocculation horizontal sedimentation tank or efficient sedimentation tank through rising pipe 20; Be provided with a water inlet shutdown valve 21 between water inlet pipe 18 and each the road heat exchanger tube 19; Be provided with a water outlet shutdown valve 22 between rising pipe 20 and each the road heat exchanger tube 19, an end of each road heat exchanger tube 19 connects impressed pressure water through flushing water intaking valve 23, and the other end of each road heat exchanger tube 19 is established 24 drainings of flushing outlet valve.Mode of operation is: the settling tank water outlet is demultiplexing heat exchanger tube 19 on water inlet pipe 18, and heat exchanger tube 19 is imbedded underground abundant absorption underground heat and improved water temperature in the pipe, compiles the back by rising pipe 20 and gets into follow-up flocculation horizontal sedimentation tank 2 or efficient sedimentation tank 3; When single heat exchanger tube 19 needs flushing, close into water shutdown valve 21 and water outlet shutdown valve 22, open flushing water intaking valve 23 and wash and draining with impressed pressure water with flushing outlet valve 24.
All the other flocculation horizontal sedimentation tanks, efficient sedimentation tank, air flotation pool, homogeneous filtering material air-water backwashing sand filter, security personnel's strainer, ultra-filtration membrane group, clean water basin and conveying pump room are prior art, no longer detail.
Claims (6)
1. one kind low turbid algae concentrated feeding water makes up strengthening treatment process; It is characterized in that when former water turbidity in winter about 5NTU and temperature be lower than 5 ℃ or summer algae surpass under 1,000,000/liter the normal condition; Treatment process comprises: adopt flocculation horizontal sedimentation tank or efficient sedimentation tank to precipitate earlier; Use the air flotation pool air floatation alga removing then, water outlet is further removed turbidity and algae through the ultra-filtration membrane group, sends into the distribution system of water supply by the conveying pump room after regulating and storing through clean water basin again.
2. technology as claimed in claim 1, it is characterized in that the air flotation pool air floatation alga removing after, after filtering through homogeneous filtering material air-water backwashing sand filter or security personnel's strainer, insert the ultra-filtration membrane group again and handle.
3. according to claim 1 or claim 2 technology, when it is characterized in that winter, former water improves through heat riser earlier and gets into the flocculation horizontal sedimentation tank after the water temperature or efficient sedimentation tank precipitates.
4. technology as claimed in claim 3 is characterized in that heat riser is the underground heat temperature elevation system, directly adopts underground heat that former water is heated.
5. technology as claimed in claim 4; It is characterized in that this underground heat temperature elevation system comprises is embedded in subterranean multichannel heat exchanger tube; One end of this multichannel heat exchanger tube is connected with water inlet pipe, and the other end of this multichannel heat exchanger tube is connected to flocculation horizontal sedimentation tank or efficient sedimentation tank through rising pipe.
6. technology as claimed in claim 2 adds chlorine or dioxide peroxide, potassium permanganate, powder activated carbon, alum and coagulant aids before it is characterized in that flocculating horizontal sedimentation tank or the efficient sedimentation tank; Add flocculating aids before homogeneous filtering material air-water backwashing sand filter or the security personnel's strainer; Add chlorine or disinfection by chlorine dioxide before the clean water basin.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102976555A (en) * | 2012-11-30 | 2013-03-20 | 徐州工程学院 | Integrated air floatation-membrane bioreactor |
| CN103523967A (en) * | 2013-11-05 | 2014-01-22 | 哈尔滨工业大学 | Method for treating short-flow water with sedimentation and air-floating coupling as core |
| CN106587503A (en) * | 2016-12-16 | 2017-04-26 | 北京桑德环境工程有限公司 | Drinking water combination treatment system and method for treating light-pollution high-turbidity surface water source |
| CN108423765A (en) * | 2018-03-13 | 2018-08-21 | 常州大学 | A kind of method of algae in removal eutrophication water |
| CN110776194A (en) * | 2019-10-12 | 2020-02-11 | 西安交通大学 | Wastewater treatment system and method based on ecological water treatment coupling geothermal energy |
| CN113307424A (en) * | 2021-04-30 | 2021-08-27 | 武汉宝捷能环境工程技术有限公司 | Lake circulating water supply and activating system for purifying water quality based on physicochemical method |
| CN113321373A (en) * | 2021-04-30 | 2021-08-31 | 武汉宝捷能环境工程技术有限公司 | Grass type lake regeneration system with bypass purification circulation and water ecological reconstruction |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101921008A (en) * | 2010-09-25 | 2010-12-22 | 哈尔滨工业大学 | Water treatment device integrating functions of clarification, air flotation and ultrafiltration |
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2011
- 2011-03-14 CN CN201110060414.XA patent/CN102674585B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101921008A (en) * | 2010-09-25 | 2010-12-22 | 哈尔滨工业大学 | Water treatment device integrating functions of clarification, air flotation and ultrafiltration |
Non-Patent Citations (1)
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| 王占金等: ""气浮/超滤组合工艺处理微污染高藻原水"", 《中国给水排水》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102976555A (en) * | 2012-11-30 | 2013-03-20 | 徐州工程学院 | Integrated air floatation-membrane bioreactor |
| CN103523967A (en) * | 2013-11-05 | 2014-01-22 | 哈尔滨工业大学 | Method for treating short-flow water with sedimentation and air-floating coupling as core |
| CN106587503A (en) * | 2016-12-16 | 2017-04-26 | 北京桑德环境工程有限公司 | Drinking water combination treatment system and method for treating light-pollution high-turbidity surface water source |
| CN108423765A (en) * | 2018-03-13 | 2018-08-21 | 常州大学 | A kind of method of algae in removal eutrophication water |
| CN110776194A (en) * | 2019-10-12 | 2020-02-11 | 西安交通大学 | Wastewater treatment system and method based on ecological water treatment coupling geothermal energy |
| CN113307424A (en) * | 2021-04-30 | 2021-08-27 | 武汉宝捷能环境工程技术有限公司 | Lake circulating water supply and activating system for purifying water quality based on physicochemical method |
| CN113321373A (en) * | 2021-04-30 | 2021-08-31 | 武汉宝捷能环境工程技术有限公司 | Grass type lake regeneration system with bypass purification circulation and water ecological reconstruction |
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| CN102674585B (en) | 2015-05-20 |
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