CN104787926A - Sewage treatment system and sewage treatment method - Google Patents
Sewage treatment system and sewage treatment method Download PDFInfo
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- CN104787926A CN104787926A CN201510145436.4A CN201510145436A CN104787926A CN 104787926 A CN104787926 A CN 104787926A CN 201510145436 A CN201510145436 A CN 201510145436A CN 104787926 A CN104787926 A CN 104787926A
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Abstract
The invention creatively relates to a sewage treatment system and a sewage treatment method. According to the adopted technical scheme, the sewage treatment system is composed of a flocculation tank and a sedimentation tank. According to the flocculation tank, a sewage inlet and a reaction water outlet are formed in a tank body I, and three baffle plates I are arranged in the tank body I to sequentially divide the interior of the tank body I into a cavity I, a cavity II, a cavity III and a cavity IV. According to the sedimentation tank, a reaction water inlet is formed in a tank body II, and three baffle plates II are arranged in the tank body II to divide the interior of the tank body II into a baffling area and a sedimentation area; a polyacrylamide inlet is formed in the baffling area, a sludge hopper is arranged at the lower end of the sedimentation area, a sludge discharging pipe is arranged at the lower end of the sludge hopper, a water distribution plate with a great number of water distribution holes is mounted at the upper end of the sludge hopper, a plurality of inclined plates are mounted on the water distribution plate, and a water drainage outlet is formed in the tank body II. According to the sewage treatment system and the sewage treatment method, the principle of sedimentation and air floatation is adopted, the efficiency of solid-liquid separation is improved to the greatest extent, and the final quality of drained water which is treated is guaranteed.
Description
Technical field
The invention belongs to sewage treatment area, relates to a kind of Sewage treatment systems and treatment process particularly.
Background technology
At mechanical processing industry, especially in surface-treated process, a large amount of trade effluents can be produced, if these trade effluents process not in time, serious pollution be caused to environment.In prior art, most employing chemical treatment method, Problems existing is: 1. because chemical feeding quantity can not be absolute suitable, have the heavy metallic salt of small portion can not be flocculated or coacervation, so also suspend in water in small particle, be difficult to overcome buoyancy of water and precipitate.Although 2. a part of metal-salt is flocculated or coacervation, particle is less, less relative to the difference in specific gravity of water, and the speed of precipitation is slow downwards, under the impact on whole current direction, also can be suspended in water and be discharged in the process of solid-liquid separation.
Summary of the invention
In order to overcome the above problems, the object of the invention is to provide a kind of structure simply, the Sewage treatment systems that wastewater purification efficiency is high.
Another object of the invention provides a kind of sewage water treatment method.
The technical scheme that the invention adopts is: Sewage treatment systems, is made up of flocculation basin and settling tank.
Described flocculation basin is: the upper end of pond body I is provided with wastewater inlet and reaction water outlet, in pond body I, wastewater inlet one end is provided with 3 pieces of traverse baffles I successively by pond body I point of coelosis I, chamber II, chamber III and chamber IV, the upper end in chamber I is provided with sodium hydroxide entrance, chamber II or upper end, chamber III are provided with calcium chloride entrance, upper end, chamber IV is provided with aluminum chloride entrance, is provided with whipping appts in chamber IV.
Described settling tank is: the upper end of pond body II is provided with the reaction mouth of a river and enters, and in pond body II, the reaction mouth of a river enters one end and is provided with 3 pieces of traverse baffles II and is divided into baffling district and settling region by pond body II; Upper end, baffling district is provided with polyacrylamide entrance, and the lower end of settling region is provided with sludge bucket, and sludge bucket lower end is provided with shore pipe, and the water dispensing board being shaped with some distributing holes is installed in sludge bucket upper end, and water dispensing board is installed some swash plates, pond body II is provided with water port.
Above-mentioned Sewage treatment systems, in pond body II, Ti Nei upper end, pond is divided into two independently water legs by L-type baffle plate I and L-type baffle plate II by the upper end of swash plate, one end of each water leg is provided with sewage routeway, be located at dissolved air water entrance outside pond body II and be located at the corresponding with the dissolved air water liberation port that dissolved air water entrance is connected and sewage routeway of inner side, water port is provided with at the middle part of each water leg, at pond body II upper end outward flange corresponding each water leg, a mud-collecting slot is set, the end of mud-collecting slot is mud discharging mouth, a corresponding slag scraper on each water leg, the end of slag scraper is corresponding with the entrance of mud-collecting slot.
A kind of sewage water treatment method, utilize above-mentioned Sewage treatment systems, method is as follows:
1) flocculation treatment: sewage enters flocculation basin by wastewater inlet, successively through chamber I, chamber II and chamber III enter in chamber IV, send into sodium hydroxide by sodium hydroxide entrance and regulate pH, send into calcium chloride through calcium chloride entrance and produce spumescence, in chamber IV, send into aluminum chloride through aluminum chloride entrance, stir, produce a large amount of flocculence materials, the reaction water containing flocculence material sends into settling tank through reaction water outlet;
2) precipitation process: the reaction water containing flocculence material enters to enter in pond body II through the reaction mouth of a river, baffling district is entered through traverse baffle II, at baffling, district adds polyacrylamide, settling region is entered after mixing, partial flocculation dress material sinks in sludge bucket, sewage continues the distributing hole on water dispensing board, along the swash plate on water dispensing board to up, partial sludge or flocculence material, slide under swash plate in sludge bucket, continuing up sewage enters in water leg along sewage routeway, simultaneously, the dissolved air water being dissolved with a large amount of microbubble enters in pond body II through dissolved air water entrance and dissolved air water liberation port, mix with up sewage at sewage routeway place, bubble mixes with the small-particle impurity in sewage, continue the upper end being up to pond body II, by slag scraper, impurity is scraped in mud-collecting slot, discharged by mud discharging mouth, the sewage of purification is discharged through water port.
Preferably, above-mentioned sewage water treatment method, adds sodium hydroxide and regulates the PH of sewage to be 8-9.Described calcium chloride is weight percentage as the calcium chloride water of 10-30%.Described aluminum chloride is weight percentage as 5-15% aluminum chloride aqueous solution.The polyacrylamide solution of described polyacrylamide to be concentration expressed in percentage by weight be 2-10%.
The beneficial effect of the invention is:
1) by flocculation basin, sewage is fully flocculated and condenses.
2) owing to being provided with swash plate in settling tank, make to enter in the sewage in settling region do not have precipitate flocculence material and mud when flowing through swash plate, because the effect of gravity is glided further, enter in sludge bucket, reach secondary sedimentation.
3) owing to being provided with the dissolved air water entrance corresponding with sewage routeway and dissolved air water liberation port, therefore a large amount of water being dissolved with fine gas bubbles can be discharged in water leg, these molten alveolate water can not have in active adsorption sewage to flocculate or the suspended substance of coacervation and particle less not have precipitate and the flocculence material of downslide, and carry the upper end floating to pond body II, scrape in mud-collecting slot through slag scraper and discharge, reach the effect of three blowdowns, thus effectively purify sewage.
4) the invention principal feature is at the sewage after helping solidifying and flocculation, in the link of solid-liquid separation, adopt comprehensive principle of design, under the prerequisite not increasing floor space and space, have employed precipitation and pneumatically supported principle, improve the efficiency of solid-liquid separation to greatest extent, ensure the final water quality of the outer draining after process.
5) the invention carries out breakdown of emulsion by adding calcium chloride, producing macroscopic suspended substance, by adding polymerize aluminum chloride, making suspended substance coacervation in water.
Accompanying drawing explanation
Fig. 1 is the structural representation of the invention.
Fig. 2 is the structural representation of water dispensing board.
Embodiment
Embodiment 1 Sewage treatment systems
As shown in Figure 1, Sewage treatment systems, is made up of flocculation basin and settling tank.
Described flocculation basin is: the upper end of pond body I (1) is provided with wastewater inlet (2) and reaction water outlet (3), pond body I (1) interior wastewater inlet (2) one end is provided with 3 pieces of traverse baffles I (4) successively by pond body (1) point of coelosis I (5), chamber II (6), chamber III (7) and chamber IV (8), the upper end in chamber I (5) is provided with sodium hydroxide entrance (9), chamber II (6) or upper end, chamber III (7) are provided with calcium chloride entrance (10), upper end, chamber IV (8) is provided with aluminum chloride entrance (11), whipping appts (12) is provided with in chamber IV (8).
Described settling tank is: the upper end of pond body II (13) is provided with the reaction mouth of a river and enters (14), and in pond body II (13), the reaction mouth of a river enters (14) one end and is provided with 3 pieces of traverse baffles II (15) and will be divided into baffling district (16) and settling region (17) in pond body II (13); Baffling district (16) upper end is provided with polyacrylamide entrance (18), the lower end of settling region (17) is provided with sludge bucket (19), sludge bucket (19) lower end is provided with shore pipe (26), the water dispensing board (20) being shaped with some distributing holes (21) is installed in sludge bucket (19) upper end, water dispensing board (20) is upper installs some swash plates (22), and pond body II (13) is provided with water port (30).
In pond body II (13), Ti Nei upper end, pond is divided into two independently water legs (25) by L-type baffle plate I (23) and L-type baffle plate II (24) by the upper end of swash plate (22), one end of each water leg (25) is provided with sewage routeway (27), be located at pond body II (13) outside dissolved air water entrance (28) and be located at inner side with the dissolved air water liberation port (29) that dissolved air water entrance (28) is connected and sewage routeway (27) corresponding, water port (30) is provided with at the middle part of each water leg (25), pond body II (13) upper end outward flange corresponding each water leg (25), a mud-collecting slot (31 is set, the end of mud-collecting slot (31) is mud discharging mouth (32), the upper corresponding slag scraper (33) of each water leg (25), the end of slag scraper (33) is corresponding with the entrance of mud-collecting slot (31).
Embodiment 2 sewage water treatment method
Adopt the Sewage treatment systems of embodiment 1, method is as follows:
1. flocculation treatment: sewage enters flocculation basin by wastewater inlet (2), successively through chamber I (5), chamber II (6) and chamber III (7) enter in chamber IV (8), sending into sodium hydroxide by sodium hydroxide entrance (9) regulates pH to be 8-9, sending into weight percent through calcium chloride entrance (10) is the calcium chloride water of 20%, produce spumescence, in chamber IV (8), sending into weight percent through aluminum chloride entrance (11) is the aluminum chloride aqueous solution of 10%, stir, produce a large amount of flocculence materials, reaction water containing flocculence material sends into settling tank through reaction water outlet (3).
2. precipitation process: the reaction water containing flocculence material enters (14) through the reaction mouth of a river and enters in pond body II (13), baffling district (16) is entered through traverse baffle II (15), the polyacrylamide that concentration expressed in percentage by weight is 5% is added in baffling district (16), settling region (17) is entered after mixing, partial flocculation dress material sinks in sludge bucket (19), sewage continues the distributing hole (21) on water dispensing board (20), along the swash plate (22) on water dispensing board (20) to up, partial sludge or flocculence material, slide under swash plate in sludge bucket, continuing up sewage enters in water leg (25) along sewage routeway (27), simultaneously, the dissolved air water being dissolved with a large amount of microbubble enters in pond body II (13) through dissolved air water entrance (28) and dissolved air water liberation port (29), mix with up sewage at sewage routeway (27) place, bubble mixes with the small-particle impurity in sewage, continue the upper end being up to pond body II (13), by slag scraper (33), impurity is scraped in mud-collecting slot (31), discharged by mud discharging mouth (32), the sewage of purification is discharged through water port (30).
Treatment effect: after above-mentioned Sewage treatment systems process is adopted to the sewage containing organism (COD3000mg/l), to discharge water sampling, leave standstill after supernatant liquor is analyzed, the COD of final water is 150-180mg/l, by the assay to final water sample, the content of the suspended substance in last discharge water reduces greatly, and final water quality can meet the requirement of environmental protection.
Claims (7)
1. Sewage treatment systems, is characterized in that: be made up of flocculation basin and settling tank;
Described flocculation basin is: the upper end of pond body I (1) is provided with wastewater inlet (2) and reaction water outlet (3), pond body I (1) interior wastewater inlet (2) one end is provided with 3 pieces of traverse baffles I (4) successively by pond body (1) point of coelosis I (5), chamber II (6), chamber III (7) and chamber IV (8), the upper end in chamber I (5) is provided with sodium hydroxide entrance (9), chamber II (6) or upper end, chamber III (7) are provided with calcium chloride entrance (10), upper end, chamber IV (8) is provided with aluminum chloride entrance (11), whipping appts (12) is provided with in chamber IV (8),
Described settling tank is: the upper end of pond body II (13) is provided with the reaction mouth of a river and enters (14), and in pond body II (13), the reaction mouth of a river enters (14) one end and is provided with 3 pieces of traverse baffles II (15) and will be divided into baffling district (16) and settling region (17) in pond body II (13); Baffling district (16) upper end is provided with polyacrylamide entrance (18), the lower end of settling region (17) is provided with sludge bucket (19), sludge bucket (19) lower end is provided with shore pipe (26), the water dispensing board (20) being shaped with some distributing holes (21) is installed in sludge bucket (19) upper end, water dispensing board (20) is upper installs some swash plates (22), and pond body II (13) is provided with water port (30).
2. Sewage treatment systems according to claim 1, it is characterized in that: in pond body II (13), Ti Nei upper end, pond is divided into two independently water legs (25) by L-type baffle plate I (23) and L-type baffle plate II (24) by the upper end of swash plate (22), one end of each water leg (25) is provided with sewage routeway (27), be located at pond body II (13) outside dissolved air water entrance (28) and be located at inner side with the dissolved air water liberation port (29) that dissolved air water entrance (28) is connected and sewage routeway (27) corresponding, water port (30) is provided with at the middle part of each water leg (25), pond body II (13) upper end outward flange corresponding each water leg (25), a mud-collecting slot (31) is set, the end of mud-collecting slot (31) is mud discharging mouth (32), the upper corresponding slag scraper (33) of each water leg (25), the end of slag scraper (33) is corresponding with the entrance of mud-collecting slot (31).
3. sewage water treatment method, it is characterized in that the Sewage treatment systems utilized described in claim 2, method is as follows:
1) flocculation treatment: sewage enters flocculation basin by wastewater inlet (2), successively through chamber I (5), chamber II (6) and chamber III (7) enter in chamber IV (8), send into sodium hydroxide by sodium hydroxide entrance (9) and regulate pH, send into calcium chloride through calcium chloride entrance (10) and produce spumescence, in chamber IV (8), aluminum chloride is sent into through aluminum chloride entrance (11), stir, produce a large amount of flocculence materials, the reaction water containing flocculence material sends into settling tank through reaction water outlet (3);
2) precipitation process: the reaction water containing flocculence material enters (14) through the reaction mouth of a river and enters in pond body II (13), baffling district (16) is entered through traverse baffle II (15), polyacrylamide is added in baffling district (16), settling region (17) is entered after mixing, partial flocculation dress material sinks in sludge bucket (19), sewage continues the distributing hole (21) on water dispensing board (20), along the swash plate (22) on water dispensing board (20) to up, partial sludge or flocculence material, slide under swash plate in sludge bucket, continuing up sewage enters in water leg (25) along sewage routeway (27), simultaneously, the dissolved air water being dissolved with a large amount of microbubble enters in pond body II (13) through dissolved air water entrance (28) and dissolved air water liberation port (29), mix with up sewage at sewage routeway (27) place, bubble mixes with the small-particle impurity in sewage, continue the upper end being up to pond body II (13), by slag scraper (33), impurity is scraped in mud-collecting slot (31), discharged by mud discharging mouth (32), the sewage of purification is discharged through water port (30).
4. sewage water treatment method according to claim 3, is characterized in that: add sodium hydroxide and regulate the PH of sewage to be 8-9.
5. sewage water treatment method according to claim 3, is characterized in that: described calcium chloride is weight percentage as the calcium chloride water of 10-30%.
6. sewage water treatment method according to claim 3, is characterized in that: described aluminum chloride is weight percentage as 5-15% aluminum chloride aqueous solution.
7. sewage water treatment method according to claim 3, is characterized in that: the polyacrylamide solution of described polyacrylamide to be concentration expressed in percentage by weight be 2-10%.
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| CN201510145436.4A CN104787926B (en) | 2015-03-30 | 2015-03-30 | Sewage treatment system and sewage treatment method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105293842A (en) * | 2015-12-04 | 2016-02-03 | 新蔡县青奎环保设备能源工程有限公司 | Process for treating fecal sewage in culture pond |
| CN106045120A (en) * | 2016-07-12 | 2016-10-26 | 佛山杰致信息科技有限公司 | Sewage treatment method |
| CN106380019A (en) * | 2016-10-24 | 2017-02-08 | 无锡海拓环保装备科技有限公司 | Novel water body purification device |
| CN107188344A (en) * | 2017-05-10 | 2017-09-22 | 安阳工学院 | A kind of sewage-treatment plant and sewage water treatment method |
| CN108947014A (en) * | 2018-08-07 | 2018-12-07 | 广东科创工程技术有限公司 | Nanometer air bearing inclined tube or sloping plate deposition integral pool after a kind of coagulation |
| CN109704537A (en) * | 2019-01-29 | 2019-05-03 | 中运建设控股有限公司 | A kind of folded spiral shell formula sludge treatment equipment |
| CN110092504A (en) * | 2019-05-20 | 2019-08-06 | 浙江天行健水务有限公司 | A kind of sludge desliming water post-processing approach |
| CN110803807A (en) * | 2019-12-19 | 2020-02-18 | 欧尔东（朝阳）环保集团股份有限公司 | Washing plastic pulp separation system and method |
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| CN110803807A (en) * | 2019-12-19 | 2020-02-18 | 欧尔东（朝阳）环保集团股份有限公司 | Washing plastic pulp separation system and method |
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Inventor after: Zhao Lijun Inventor after: Xu Shanwen Inventor before: Chen Yingxin Inventor before: Zhang Yanyan Inventor before: Cui Duo Inventor before: Sun Bojun |
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Effective date of registration: 20161117 Address after: 100094, No. 3, building, No. 3, Feng Xiu Middle Road, Beijing, Haidian District Applicant after: SHENGDA ENVIRONMENT ENGIEERING CO., LTD. Address before: Ling Bei Jie Huanggu District of Shenyang City, Liaoning Province, No. 1 110034 Applicant before: Shenyang aircraft industry (Group) Co., Ltd. |
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