CN109110966A - A kind of processing method of the raw water containing algae - Google Patents
A kind of processing method of the raw water containing algae Download PDFInfo
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- CN109110966A CN109110966A CN201811053582.4A CN201811053582A CN109110966A CN 109110966 A CN109110966 A CN 109110966A CN 201811053582 A CN201811053582 A CN 201811053582A CN 109110966 A CN109110966 A CN 109110966A
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- algae
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- 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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- 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
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- 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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
-
- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention provides a kind of processing method of raw water containing algae, is related to tap water purifying processing technology field.The processing method of present invention raw water containing algae: Cl is added2Carry out chlorination processing；Poly-iron chloride processing is added；Flocculation aid, activated silicic acid processing is added；Flocculation, precipitating, filtration treatment.The processing method of present invention raw water containing algae is on the basis of conventional water treatment, raw water containing algae is handled by preparatory chlorination, add the mode that poly-iron chloride, flocculation aid, activated silicic acid handle the raw water containing algae, except algae effect is good, algae removal rate reaches 98.5%, except algae excellent effect, the cyanobacteria in water body and other pollutants can be effectively removed.
Description
Technical field
The present invention relates to tap water purifying processing technology fields, and in particular to a kind of processing method of the raw water containing algae.
Background technique
With the continuous quickening of China's process of industrialization and being continuously increased for population, the contaminated situation in water source is increasingly tight
Weight, leads to algae and water mass propagation, and water quality is contaminated and generates eutrophication, or even directly results in breaking out greatly for cyanobacteria.Elder brother
Bright Dian Chi, Wuxi Taihu Lake, Chaohu, Anhui Province, China are especially prominent, bring difficulty to city water processing.The serious consequence that algae multiplies
It even forces individual water factories that can not supply water, therefore is of interest both at home and abroad to the processing of the raw water containing algae.
The presence of algae mainly has a following influence: organic object amount after increase processing in water, and when disinfection will increase chlorine consumption,
Rotten algae can exhaust the dissolved oxygen in water, both pipe network water may be made to generate unpleasant stink, and lead to corrosive pipeline
One factor；If containing a large amount of algae after processing in water, will lead to occur in water a large amount of viruses, bacterium, work microorganism
Deng；The algae for flowing into the distribution system of water supply, becomes the nutrient source of microorganism, microorganism breeds in water, polluted the water of pipe network again
Matter；Some algae have toxicity, and toxin contained by algae can be discharged into water after cell death rupture, as anabena can cause mind
Through being poisoned, Microcystis aeruginosa can lead to hepatotoxicity, these algae and its toxicity is more difficult is removed with conventional method.
In the prior art, there are many processing method of the raw water containing algae, but removing algae is not individual technique, it is necessary to
Combine with other techniques in water factory such as coagulation, precipitating, filtering and disinfection and is likely to obtain preferably except algae effect.It is common
Processing method it is as follows: (1) use Microfilter.The efficiency of Microfilter removal algae has very big difference with the type of algae,
Most tiny algae is most difficult to remove, and sometimes only about 10%, but this algae coagulation dosage needed for the coagulation stage is maximum, again
Because the turbidity that Microfilter can remove is few, so when using Microfilter pre-filtering, it is impossible to be substantially reduced coagulation dosage.
(2) it pre-oxidizes.Certain algae, such as green algae can be aoxidized with Cl2, O3, KMnO4 and ClO2 oxidant, to increase
Removal effect.(3) coagulation.(4) clarification or air bearing.The water factory on the ground such as China Kunming, Wuhan and Wuxi uses flotation tank, can be same
When achieve the purpose that clarification and except algae.(5) it filters.Directly filtering is unsuitable for handling the high water of amount containing algae, at this moment should filter
Increase precipitating or clarification process before pond, increases processing cost.
Therefore, the processing method for developing a kind of good raw water containing algae of algae removal effect is particularly important.
Summary of the invention
For technical problem in the prior art, the present invention provides a kind of processing method of raw water containing algae.
In order to achieve the above object, technical solution of the present invention is achieved by the following technical programs:
A kind of processing method of the raw water containing algae, comprising the following steps:
S1, it is ready in the investment of raw water containing algae preliminary sedimentation tank to be processed；
S2, the Cl that 0.5-2.0mg/L is added into preliminary sedimentation tank2, 5-20min is stirred, the raw water of chlorination is obtained；
S3, the raw water of step S2 chlorination is inputted in distribution well, 15-50mg/L poly-iron chloride is added, stir 0.5-2min
Afterwards, it then inputs in combined shaft；
S4,0.05-0.2mg/L flocculation aid, 0.1-0.3mg/L activated silicic acid are sequentially added into combined shaft, stir 12-
It is inputted in flocculation basin after 18min, flocculation reaction 3-8min, then inputs sedimentation basin, after quiet heavy 25-35min, carried out in filtering ponds
Filter processing.
Preferably, flocculation aid described in step S4 is finished in 50-100s addition.
Preferably, the flocculation aid is polydimethyl diallyl ammonium chloride.
Preferably, the step S2 are as follows: the raw water in preliminary sedimentation tank is stirred into 0.5-2min with the revolving speed of 180-250r/min
Afterwards, the Cl of 0.5-2.0mg/L is added while stirring2, continue to stir 5-20min, obtain the raw water of chlorination.
Preferably, the step S3 are as follows: by the raw water input distribution well of chlorination, 15-50mg/L poly-iron chloride is added, with
After the revolving speed stirring 0.5-2min of 350-500r/min, then input in combined shaft.
Preferably, the revolving speed of stirring described in step S4 is 100-200r/min.
Preferably, the preliminary sedimentation tank, distribution well, combined shaft, flocculation basin, sedimentation basin, filtering ponds are sequentially connected.
The present invention provides a kind of processing method of raw water containing algae, and advantage is compared with prior art:
The processing method of present invention raw water containing algae is to be handled by preparatory chlorination on the basis of conventional water treatment and contain algae
Class raw water adds the mode that poly-iron chloride, flocculation aid, activated silicic acid handle the raw water containing algae, except algae effect is good, algae removal
Rate reaches 98.5%, removes algae excellent effect, can effectively remove the cyanobacteria in water body and other pollutants.
Detailed description of the invention
Technical solution in the prior art in order to illustrate the embodiments of the present invention more clearly below will show embodiment
There is attached drawing needed in technical solution description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is the process flow chart of original sub-block containing algae of the invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below with reference to the embodiment of the present invention pair
Technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is a part of the invention
Embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making wound
Every other embodiment obtained under the premise of the property made labour, shall fall within the protection scope of the present invention.
Embodiment 1:
It is derived from the sample of raw water containing algae in Chaohu, Anhui Province, China waters, water sample amount containing algae is 30000/mL, turbidity 25NTU,
PH7.10, the processing method of the present embodiment raw water containing algae the following steps are included:
S1, it is ready in the investment of raw water containing algae preliminary sedimentation tank to be processed；
S2, the Cl that 0.5mg/L is added into preliminary sedimentation tank2, 5min is stirred, the raw water of chlorination is obtained；
S3, will step S2 chlorination raw water input distribution well in, be added 15mg/L poly-iron chloride, stir 0.5min after, then
It inputs in combined shaft；
S4,0.05mg/L flocculation aid, 0.1mg/L activated silicic acid are sequentially added into combined shaft, input wadding after stirring 12min
In solidifying pond, flocculation reaction 3min, then sedimentation basin is inputted, after quiet heavy 25min, processing is filtered in filtering ponds.
Take water after filter measurement except algae effect, detecting remaining amount of algae is 500/mL, and algae removal rate is 98.4%.
Embodiment 2:
It is derived from the sample of raw water containing algae in Kunming Dianchi lake waters, water sample amount containing algae is 40000/mL, turbidity 25NTU,
PH7.10, the processing method of the present embodiment raw water containing algae the following steps are included:
S1, it is ready in the investment of raw water containing algae preliminary sedimentation tank to be processed；
S2, after the raw water in preliminary sedimentation tank is stirred 2min with the revolving speed of 250r/min, it is added 2.0mg/L's while stirring
Cl2, continue to stir 20min, obtain the raw water of chlorination；
S3, the raw water of step S2 chlorination is inputted in distribution well, 50mg/L poly-iron chloride is added, with the revolving speed of 500r/min
After stirring 2min, then input in combined shaft；
S4,0.2mg/L polydimethyl diallyl ammonium chloride, 0.3mg/L activated silicic acid are sequentially added into combined shaft,
In, polydimethyl diallyl ammonium chloride is finished in 50s addition, is to input flocculation basin after 100r/min stirs 18min with revolving speed
In, flocculation reaction 3-8min, then sedimentation basin is inputted, after quiet heavy 35min, processing is filtered in filtering ponds.
Take water after filter measurement except algae effect, detecting remaining amount of algae is 680/mL, and algae removal rate is 98.3%.
Embodiment 3:
It is derived from the sample of raw water containing algae in Hengyang Yanqi Lake waters, water sample amount containing algae is 30500/mL, turbidity 25NTU,
PH7.10, the processing method of the present embodiment raw water containing algae the following steps are included:
S1, it is ready in the investment of raw water containing algae preliminary sedimentation tank to be processed；
S2, after the raw water in preliminary sedimentation tank is stirred 1min with the revolving speed of 200r/min, it is added 0.8mg/L's while stirring
Cl2, continue to stir 13min, obtain the raw water of chlorination；
S3, the raw water of step S2 chlorination is inputted in distribution well, 20mg/L poly-iron chloride is added, with the revolving speed of 400r/min
After stirring 1min, then input in combined shaft；
S4,0.1mg/L polydimethyl diallyl ammonium chloride, 0.1mg/L activated silicic acid are sequentially added into combined shaft,
In, polydimethyl diallyl ammonium chloride is finished in 75s addition, is to input flocculation basin after 150r/min stirs 15min with revolving speed
In, flocculation reaction 5min, then sedimentation basin is inputted, after quiet heavy 30min, processing is filtered in filtering ponds.
Take water after filter measurement except algae effect, detecting remaining amount of algae is 457/mL, and algae removal rate is 98.5%.
Embodiment 4:
It is derived from the sample of raw water containing algae of Wuxi Tai Lake, water sample amount containing algae is 31000/mL, turbidity 25NTU,
PH7.10, the processing method of the present embodiment raw water containing algae the following steps are included:
S1, it is ready in the investment of raw water containing algae preliminary sedimentation tank to be processed；
S2, after the raw water in preliminary sedimentation tank is stirred 1.5min with the revolving speed of 210r/min, it is added 1.5mg/L's while stirring
Cl2, continue to stir 10min, obtain the raw water of chlorination；
S3, the raw water of step S2 chlorination is inputted in distribution well, 30mg/L poly-iron chloride is added, with the revolving speed of 400r/min
After stirring 1.5min, then input in combined shaft；
S4,0.15mg/L polydimethyl diallyl ammonium chloride, 0.2mg/L activated silicic acid are sequentially added into combined shaft,
Wherein, polydimethyl diallyl ammonium chloride is finished in 80s addition, is to input flocculation after 160r/min stirs 15min with revolving speed
Chi Zhong, flocculation reaction 6min, then sedimentation basin is inputted, after quiet heavy 30min, processing is filtered in filtering ponds.
Take water after filter measurement except algae effect, detecting remaining amount of algae is 498/mL, and algae removal rate is 98.4%.
Embodiment 5:
It is derived from the sample of raw water containing algae in Hengyang Yanqi Lake waters, water sample amount containing algae is 30900/mL, turbidity 25NTU,
PH7.10, the processing method of the present embodiment raw water containing algae the following steps are included:
S1, it is ready in the investment of raw water containing algae preliminary sedimentation tank to be processed；
S2, after the raw water in preliminary sedimentation tank is stirred 1.2min with the revolving speed of 220r/min, it is added 1.2mg/L's while stirring
Cl2, continue to stir 18min, obtain the raw water of chlorination；
S3, the raw water of step S2 chlorination is inputted in distribution well, 25mg/L poly-iron chloride is added, with the revolving speed of 400r/min
After stirring 1.3min, then input in combined shaft；
S4,0.13mg/L polydimethyl diallyl ammonium chloride, 0.16mg/L activated silicic acid are sequentially added into combined shaft,
Wherein, polydimethyl diallyl ammonium chloride is finished in 70s addition, is to input flocculation after 130r/min stirs 16min with revolving speed
Chi Zhong, flocculation reaction 5min, then sedimentation basin is inputted, after quiet heavy 33min, processing is filtered in filtering ponds.
Take water after filter measurement except algae effect, detecting remaining amount of algae is 472/mL, and algae removal rate is 98.5%.
It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although ginseng
According to previous embodiment, invention is explained in detail, those skilled in the art should understand that: it still can be with
It modifies the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；And
These are modified or replaceed, the spirit and model of technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (7)
1. a kind of processing method of raw water containing algae, which comprises the following steps:
S1, it is ready in the investment of raw water containing algae preliminary sedimentation tank to be processed；
S2, the Cl that 0.5-2.0mg/L is added into preliminary sedimentation tank2, 5-20min is stirred, the raw water of chlorination is obtained；
S3, will step S2 chlorination raw water input distribution well in, be added 15-50mg/L poly-iron chloride, stir 0.5-2min after, then
It inputs in combined shaft；
S4,0.05-0.2mg/L flocculation aid, 0.1-0.3mg/L activated silicic acid are sequentially added into combined shaft, stir 12-18min
It inputs in flocculation basin afterwards, flocculation reaction 3-8min, then inputs sedimentation basin, after quiet heavy 25-35min, be filtered place in filtering ponds
Reason.
2. the processing method of the raw water containing algae according to claim 1, it is characterised in that: flocculation aid described in step S4 is in 50-
100s addition finishes.
3. the processing method of the raw water according to claim 1 or claim 2 containing algae, it is characterised in that: the flocculation aid is poly- diformazan
Base diallyl ammonium chloride.
4. the processing method of the raw water containing algae according to claim 1, which is characterized in that the step S2 are as follows: by preliminary sedimentation tank
In raw water 0.5-2min is stirred with the revolving speed of 180-250r/min after, the Cl of 0.5-2.0mg/L is added while stirring2, continue
5-20min is stirred, the raw water of chlorination is obtained.
5. the processing method of the raw water containing algae according to claim 1, which is characterized in that the step S3 are as follows: by chlorination
Raw water inputs in distribution well, and 15-50mg/L poly-iron chloride is added, after stirring 0.5-2min with the revolving speed of 350-500r/min, then
It inputs in combined shaft.
6. the processing method of the raw water containing algae according to claim 1, it is characterised in that: the revolving speed of stirring described in step S4 is
100-200r/min。
7. the processing method of the raw water containing algae according to claim 1, it is characterised in that: the preliminary sedimentation tank, distribution well, mixing
Well, flocculation basin, sedimentation basin, filtering ponds are sequentially connected.
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| CN201811053582.4A CN109110966A (en) | 2018-09-11 | 2018-09-11 | A kind of processing method of the raw water containing algae |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114933368A (en) * | 2022-04-28 | 2022-08-23 | 宁波三江益农化学有限公司 | Composition for controlling algae |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101134626A (en) * | 2007-08-01 | 2008-03-05 | 济南市供排水监测中心 | Emergency handling process for sudden burst of raw material alga |
| CN101525173A (en) * | 2009-03-17 | 2009-09-09 | 济南大学 | Oxygenation and dimethyl diallyl ammonium chloride composite modification silicoferrite coagulating agent and preparation method thereof |
-
2018
- 2018-09-11 CN CN201811053582.4A patent/CN109110966A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101134626A (en) * | 2007-08-01 | 2008-03-05 | 济南市供排水监测中心 | Emergency handling process for sudden burst of raw material alga |
| CN101525173A (en) * | 2009-03-17 | 2009-09-09 | 济南大学 | Oxygenation and dimethyl diallyl ammonium chloride composite modification silicoferrite coagulating agent and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114933368A (en) * | 2022-04-28 | 2022-08-23 | 宁波三江益农化学有限公司 | Composition for controlling algae |
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Application publication date: 20190101 |