CN105540920A - Conventional water treatment strengthening filtering process - Google Patents
Conventional water treatment strengthening filtering process Download PDFInfo
- Publication number
- CN105540920A CN105540920A CN201510956492.6A CN201510956492A CN105540920A CN 105540920 A CN105540920 A CN 105540920A CN 201510956492 A CN201510956492 A CN 201510956492A CN 105540920 A CN105540920 A CN 105540920A
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- CN
- China
- Prior art keywords
- water
- filtration
- medicament
- treatment
- secondary filtration
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- 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
-
- 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
- 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 discloses a conventional water treatment strengthening filtering process, the interception capacity of a filter pool can be improved through use of an agent, according to the characteristics and quality of raw water and coagulation process treatment conditions, an appropriate agent is selected, before filteration, a small amount of the appropriate agent is added for changing surface properties of residual water impurity particles before the filteration and a filter material, in essence, the surface properties of the impurity particles and / or the filter material can be changed, the probability of effective collision among the particles and among the particles and the filter material, the case of down movement of the impurity particles in the filter material layer can be improved, and the purposes of improvement and purification of the quality of water can be achieved.
Description
[technical field]
The present invention relates to the technical field of purifying water process, the technical field of the intensive filtration technique particularly in a kind of conventional water treatment.
[background technology]
Middle method water utilities starts to carry out output water 0.2NTU turbidity control objectives, each cooperative venture active response, improves configuration and the operation of water factory, payes attention to water quality management.Because each cooperative venture raw water quality and water technology there are differences, situation about occurring in the process of implementation is also incomplete same.Some cooperative venture by strengthening management or/and a small amount of improve dosage just can realize target, even and if some increases substantially dosage and is also difficult to realize target.The precipitation water turbidity 2-3NTU of some water factory is even higher, and after filter, water turbidity also can reach 0.1NTU, and the precipitation water turbidity of some water factory to be less than 1NTU even lower, could realize filter afterwards water turbidity be less than the target of 0.2NTU.For better performing turbidity control objectives, increase water quality, energy-saving and cost-reducing, simultaneously also for solving the low problem of some water factory's filter tank interception capacities, we need searching more effectively, more reasonably totally to improve water quality scheme.Overall one of key point of water quality scheme of improving is intensive filtration.Intensive filtration technology can application success, can effectively improve water quality, it suitability how, need to select which kind of medicament, have the series of problems such as what impact to production run, all need practice and exploring.
[summary of the invention]
Object of the present invention solves the problems of the prior art exactly, intensive filtration technique in a kind of conventional water treatment is proposed, can according to raw water quality feature and coagulation process disposition, select to be applicable to medicament, add on a small quantity before filter, change the front water residual impurity particle of filter and filter material surface character, thus improve the crown_interception of filtrate to impurity, reach the object improving water quality of purifying waste water.
For achieving the above object, the present invention proposes the intensive filtration technique in a kind of conventional water treatment, comprise the following steps:
Step one: raw water quality is detected, as required former water is added after coagulating agent carries out premix and introduce settling tank, what former water carried out for some time in settling tank staticly settles reaction, precipitated impurities in former water converges to sludge hopper by inclined tube district, and the supernatant liquor in former water converges in water leg as secondary filtration water;
Step 2: the water quality situation detecting secondary filtration water, adds filtration medicament by multiple adding of agent point to the secondary filtration water in water leg as required;
Step 3: open slide valve, make to form drop liquid level successively between water leg, the total canal of precipitation water, connection canal, filter tank inlet channel, water distribution weir under gravity poor, secondary filtration water mixes under drop effect mutually with filtration medicament;
Step 4: the secondary filtration water mixed and filtration medicament are introduced into sand filter, and sand filter carries out filtration treatment to secondary filtration water;
Step 5: water quality detection is carried out to the secondary filtration water after sand filter filtration treatment, the follow-up water treatment operation of qualified rear introducing.
As preferably, the composition of described coagulating agent is PaCl, FeCl
3, Al
2(SO
4)
3in at least one, the component proportions of described coagulating agent is determined according to the water quality detection result of former water.
As preferably, the composition of described filtration medicament is PaCl, FeCl
3in at least one, the component proportions of described filtration medicament is determined according to the water quality detection result of secondary filtration water in step 2.
As preferably, described adding of agent point is connected with liquid medicine case by volume pump, described volume pump can control medicament delivery amount and the medicament delivery speed of adding of agent point, and the quantity of described adding of agent point has multiple, and the position of described adding of agent point has multiple.
Beneficial effect of the present invention: the present invention is under the prerequisite ensureing coagulation condition and optimal coagulant dosage, filter tank interception capacity is improved by medicament, according to raw water quality feature and coagulation process disposition, select to be applicable to medicament, add on a small quantity before filter, before changing filter, water residual impurity particle is or/and filter material surface character, essence improves impurity particle or/and filter material surface character, improve between particle and the effective collision probability of particle and filtrate, thus the situation that minimizing impurity particle moves down at filter material layer, thus improve the crown_interception of filtrate to impurity, reach the object improving water quality of purifying waste water.
Feature of the present invention and advantage will be described in detail by reference to the accompanying drawings by embodiment.
[accompanying drawing explanation]
Fig. 1 is the process flow sheet of the intensive filtration technique in a kind of conventional water treatment of the present invention.
[embodiment]
Consult Fig. 1, the intensive filtration technique in a kind of conventional water treatment of the present invention, comprises the following steps:
Step one: raw water quality is detected, as required former water is added after coagulating agent carries out premix and introduce settling tank, what former water carried out for some time in settling tank staticly settles reaction, precipitated impurities in former water converges to sludge hopper by inclined tube district, and the supernatant liquor in former water converges in water leg as secondary filtration water;
Step 2: the water quality situation detecting secondary filtration water, adds filtration medicament by multiple adding of agent point to the secondary filtration water in water leg as required;
Step 3: open slide valve, make to form drop liquid level successively between water leg, the total canal of precipitation water, connection canal, filter tank inlet channel, water distribution weir under gravity poor, secondary filtration water mixes under drop effect mutually with filtration medicament;
Step 4: the secondary filtration water mixed and filtration medicament are introduced into sand filter, and sand filter carries out filtration treatment to secondary filtration water;
Step 5: water quality detection is carried out to the secondary filtration water after sand filter filtration treatment, the follow-up water treatment operation of qualified rear introducing.
The composition of described coagulating agent is PaCl, FeCl
3, Al
2(SO
4)
3in at least one, the component proportions of described coagulating agent is determined according to the water quality detection result of former water, and the composition of described filtration medicament is PaCl, FeCl
3in at least one, the component proportions of described filtration medicament is determined according to the water quality detection result of secondary filtration water in step 2, described adding of agent point is connected with liquid medicine case by volume pump, described volume pump can control medicament delivery amount and the medicament delivery speed of adding of agent point, the quantity of described adding of agent point has multiple, and the position of described adding of agent point has multiple.
The present invention is under the prerequisite ensureing coagulation condition and optimal coagulant dosage, filter tank interception capacity is improved by medicament, according to raw water quality feature and coagulation process disposition, select to be applicable to medicament, add on a small quantity before filter, before changing filter, water residual impurity particle is or/and filter material surface character, essence improves impurity particle or/and filter material surface character, improve between particle and the effective collision probability of particle and filtrate, thus the situation that minimizing impurity particle moves down at filter material layer, thus improve the crown_interception of filtrate to impurity, reach the object improving water quality of purifying waste water.
Above-described embodiment is to explanation of the present invention, is not limitation of the invention, anyly all belongs to protection scope of the present invention to the scheme after simple transformation of the present invention.
Claims (4)
1. the intensive filtration technique in conventional water treatment, is characterized in that: comprise the following steps:
Step one: raw water quality is detected, as required former water is added after coagulating agent carries out premix and introduce settling tank, what former water carried out for some time in settling tank staticly settles reaction, precipitated impurities in former water converges to sludge hopper by inclined tube district, and the supernatant liquor in former water converges in water leg as secondary filtration water;
Step 2: the water quality situation detecting secondary filtration water, adds filtration medicament by multiple adding of agent point to the secondary filtration water in water leg as required;
Step 3: open slide valve, make to form drop liquid level successively between water leg, the total canal of precipitation water, connection canal, filter tank inlet channel, water distribution weir under gravity poor, secondary filtration water mixes under drop effect mutually with filtration medicament;
Step 4: the secondary filtration water mixed and filtration medicament are introduced into sand filter, and sand filter carries out filtration treatment to secondary filtration water;
Step 5: water quality detection is carried out to the secondary filtration water after sand filter filtration treatment, the follow-up water treatment operation of qualified rear introducing.
2. the intensive filtration technique in a kind of conventional water treatment as claimed in claim 1, it is characterized in that: the composition of described coagulating agent is at least one in PaCl, FeCl3, Al2 (SO4) 3, the component proportions of described coagulating agent is determined according to the water quality detection result of former water.
3. the intensive filtration technique in a kind of conventional water treatment as claimed in claim 1, it is characterized in that: the composition of described filtration medicament is at least one in PaCl, FeCl3, the component proportions of described filtration medicament is determined according to the water quality detection result of secondary filtration water in step 2.
4. the intensive filtration technique in a kind of conventional water treatment as claimed in claim 1, it is characterized in that: described adding of agent point is connected with liquid medicine case by volume pump, described volume pump can control medicament delivery amount and the medicament delivery speed of adding of agent point, the quantity of described adding of agent point has multiple, and the position of described adding of agent point has multiple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510956492.6A CN105540920A (en) | 2015-12-18 | 2015-12-18 | Conventional water treatment strengthening filtering process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510956492.6A CN105540920A (en) | 2015-12-18 | 2015-12-18 | Conventional water treatment strengthening filtering process |
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| Publication Number | Publication Date |
|---|---|
| CN105540920A true CN105540920A (en) | 2016-05-04 |
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|---|---|---|---|
| CN201510956492.6A Pending CN105540920A (en) | 2015-12-18 | 2015-12-18 | Conventional water treatment strengthening filtering process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106830430A (en) * | 2017-03-07 | 2017-06-13 | 李如意 | The efficient fast treating process and method of a kind of low temperature and low turbidity water |
| CN111943392A (en) * | 2020-07-27 | 2020-11-17 | 湖南农业大学 | Device and method for quickly purifying cadmium-polluted irrigation water before entering field |
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| CN101962251A (en) * | 2010-09-10 | 2011-02-02 | 北京工业大学 | Powdered carbon backflow and carbon/sand filter combined process for treating polluted water |
| CN202778085U (en) * | 2012-05-15 | 2013-03-13 | 北京理想华源环境科技有限公司 | Flocculation filtering device of sewage treatment system |
| CN103041923A (en) * | 2012-12-28 | 2013-04-17 | 国家电网公司 | Process of recycling ash removing water of wet electrostatic precipitator in thermal power plant |
| CN203653353U (en) * | 2013-11-06 | 2014-06-18 | 成都绿源新创环保科技有限公司 | Water-treatment filter-cloth filter tank |
| CN204779170U (en) * | 2015-07-01 | 2015-11-18 | 毛允明 | Remove look water purification unit |
-
2015
- 2015-12-18 CN CN201510956492.6A patent/CN105540920A/en active Pending
Patent Citations (5)
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| CN101962251A (en) * | 2010-09-10 | 2011-02-02 | 北京工业大学 | Powdered carbon backflow and carbon/sand filter combined process for treating polluted water |
| CN202778085U (en) * | 2012-05-15 | 2013-03-13 | 北京理想华源环境科技有限公司 | Flocculation filtering device of sewage treatment system |
| CN103041923A (en) * | 2012-12-28 | 2013-04-17 | 国家电网公司 | Process of recycling ash removing water of wet electrostatic precipitator in thermal power plant |
| CN203653353U (en) * | 2013-11-06 | 2014-06-18 | 成都绿源新创环保科技有限公司 | Water-treatment filter-cloth filter tank |
| CN204779170U (en) * | 2015-07-01 | 2015-11-18 | 毛允明 | Remove look water purification unit |
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| 何文杰 等: "《安全饮用水保障技术》", 31 March 2006 * |
| 全国勘察设计注册工程师公用设备专业管理委员会秘书处: "《全国勘察设计注册公用设备工程师 给水排水专业 考试复习教材》", 30 April 2004 * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106830430A (en) * | 2017-03-07 | 2017-06-13 | 李如意 | The efficient fast treating process and method of a kind of low temperature and low turbidity water |
| CN106830430B (en) * | 2017-03-07 | 2021-02-09 | 李如意 | Efficient and rapid treatment process and method for low-temperature and low-turbidity water |
| CN111943392A (en) * | 2020-07-27 | 2020-11-17 | 湖南农业大学 | Device and method for quickly purifying cadmium-polluted irrigation water before entering field |
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Application publication date: 20160504 |