CN102942263A - Sewage treatment method - Google Patents

Sewage treatment method Download PDF

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Publication number
CN102942263A
CN102942263A CN2012104467536A CN201210446753A CN102942263A CN 102942263 A CN102942263 A CN 102942263A CN 2012104467536 A CN2012104467536 A CN 2012104467536A CN 201210446753 A CN201210446753 A CN 201210446753A CN 102942263 A CN102942263 A CN 102942263A
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CN
China
Prior art keywords
sewage
water
value
enters
clean water
Prior art date
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.)
Pending
Application number
CN2012104467536A
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Chinese (zh)
Inventor
吴耀文
唐荣
冯伟明
陈豪
郑美雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CAMEL GROUP SOUTHERN BATTERY Co Ltd
Original Assignee
CAMEL GROUP SOUTHERN BATTERY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CAMEL GROUP SOUTHERN BATTERY Co Ltd filed Critical CAMEL GROUP SOUTHERN BATTERY Co Ltd
Priority to CN2012104467536A priority Critical patent/CN102942263A/en
Publication of CN102942263A publication Critical patent/CN102942263A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a sewage treatment method, which relates to the technical field of sewage treatment technology. The method includes the following steps: oil slick is skimmed, sewage stays in the reservoir of a raw water-regulating tank for 6 to 7 days, the amount of the water is stabilized, and the concentration of the water is uniformed; in the first stage of pH value regulation, the pH value of the sewage is regulated to 4.9 to 5.1; in the second stage of pH value regulation, the pH value of the sewage is regulated to 9.9 to 10.1, the sewage, the pH value of which ranges from 9.9 to 10.1, automatically flows into a coagulation reactor, and is then mixed with coagulant and coagulant aid, flocculate is discharged, so that the sewage is turned into clean water, and the clean water enters the clean water area of a tilted plate separator; the clean water which overflows from the sawtoothed overflow weir of the clean water area enters a test tank, the pH value of the clean water is tested, sulfuric acid is added into the clean water to regulate the pH value of the clean water to 6 to 9, and finally, the clean water is filtered and then enters an intermediate reservoir. Compared with the prior art, the sewage treatment method has the advantage that the quality of the water treated by the sewage treatment method comes up to the related discharge standards of national and local environmental regulations.

Description

The treatment process of sewage
Technical field
The present invention relates to technical field of sewage, the processing method that especially a kind of sewage for lead acid cell production process is produced carries out comprehensive treating process.
Background technology
In the sewage that store battery production produces, mainly containing harmful substances is sulfuric acid, and lead sulfate and lead plaster lead powder also have a small amount of floating to add the impurity such as agent, floating oil, silt particle in addition.If directly these waste water are discharged, can to environment on every side, especially can cause serious pollution to water resource environment on every side.The treatment process that enterprise moves the front original sewage of factory is sewage have been put into a plurality of settling tanks precipitate rear discharge.The treatment process of this sewage has following deficiency: the sewage that each station produces in the lead acid cell production process just directly is discharged to off-site through after simply processing, to the environment around the plant area, especially can have influence on plant area's water resource environment on every side.Therefore, need in the sewage network of whole store battery being produced line and treatment tank rational deployment, to find a kind of suitable processing method that the sewage that produces in store battery production is carried out comprehensive treating process for the design of new plant area.
Summary of the invention
The technical problem to be solved in the present invention provides a kind for the treatment of process of sewage, and the dissimilar pollutent that produces sewage in the treatment process store battery production of this this sewage is processed, and the water outlet after the processing can reuse and directly discharging.
The technical scheme that technical solution problem of the present invention adopts is: the treatment process of this sewage may further comprise the steps:
A, oil removing: the sewage that produces in the store battery production is sent into first the oil trap in former water water transfer pond, removed oil slick; In described oil trap, add simultaneously and enter calcium carbonate, the large particulate matter mineral acid in this calcium carbonate and the sewage and described calcium carbonate reaction, generation throw out; Produce after the throw out, sewage enters the water reservoir in former water water transfer pond from the passage gravity flow, and sewage was stopped 6~7 days in the water reservoir in described former water water transfer pond, the concentration of stabilizing water quantity and even water;
B, pH value one-level are regulated: the sewage after the A step process is pumped into the one-level setting device, detect the pH value of sewage, throw in sodium hydroxide in sewage, make the pH value of sewage transfer to 4.9~5.1;
C, pH value secondary are regulated: sewage enters the secondary setting device from the overflow of described one-level setting device, detects the pH value of sewage, throws in sodium hydroxide in sewage, makes the pH value of sewage transfer to 9.9~10.1; The sewage self-flowing of pH value in 9.9~10.1 scopes enters coagulation reaction device;
D, coagulating: after the sewage self-flowing of C step gained enters coagulation reaction device, stir and add coagulating agent and coagulant aids, sewage after stirring enters tilted plate separator from described coagulation reaction device overflow, under the effect of coagulating agent and coagulant aids, with the substance trapping that is difficult to sedimentation tiny in the sewage, make it to become the flocs unit of free settling, described flocs unit enters the sludge bucket of tilted plate separator under action of gravity along with plumbous mud; The sewage of discharging described flocs unit becomes clear water, and this clear water enters the clear water zone of described tilted plate separator; The clear water that overflows from the zig-zag overflow weir of clear water zone enters the detection groove, detects the pH value of clear water, adds sulfuric acid in clear water, and the pH value of clear water is transferred to 6~9;
E, separation of lead mud: the plumbous mud in the D step is sent into pressure filter, get plumbous mud product and sewage; Send sewage back to described former water water transfer pond;
F, water outlet: the clear water of pH value in 6~9 scopes in the D step got final product by entering intermediate pool after filtering.
In the technical scheme of the treatment process of above-mentioned sewage, technical scheme can also be more specifically: described coagulating agent is PAFS; Described coagulant aids is polyacrylamide.
Further, described former water water transfer pond is provided with oil trap and water reservoir.
Owing to having adopted technique scheme, the present invention compared with prior art, the beneficial effect that has is:
1, owing to being the optimal ph scope of finding out lead ion sedimentation and other impurity sedimentation by experiment repeatedly, find the best joint of economy and high treatment efficiency, the good separating effect of plumbous mud and other impurity and water in the sewage, the water quality after the processing meets the relevant emission standards of country and local environmental regulations.
2. the trees that are back to production and pouring lawn and on-site capable of circulation of the water after processing have been saved water consumption, have reduced cost.
The plumbous mud cake of 3, discharging in the sewage disposal can send the smeltery, saves production cost.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
The treatment process of sewage as shown in Figure 1 may further comprise the steps: oil removing: the sewage that produces in the store battery production is sent into first the oil trap in former water water transfer pond, removed oil slick; In oil trap, add simultaneously calcium carbonate, the large particulate matter mineral acid in this calcium carbonate and the sewage with state calcium carbonate reaction, the generation throw out; Produce after the throw out, sewage enters the water reservoir in former water water transfer pond from the passage gravity flow, and sewage was stopped 6~7 days in the water reservoir in former water water transfer pond, the concentration of stabilizing water quantity and even water; Former water water transfer pond is provided with oil trap and water reservoir.PH value one-level is regulated: the sewage after will processing pumps into the one-level setting device, detects the pH value of sewage, throws in sodium hydroxide in sewage, makes the pH value of sewage transfer to 4.9~5.1.PH value secondary is regulated: sewage enters the secondary setting device from the overflow of one-level setting device, detects the pH value of sewage, throws in sodium hydroxide in sewage, makes the pH value of sewage transfer to 9.9~10.1; The sewage self-flowing of pH value in 9.9~10.1 scopes enters coagulation reaction device.Coagulating: after sewage self-flowing enters coagulation reaction device, stir adding coagulating agent and coagulant aids, coagulating agent is PAFS; Coagulant aids is polyacrylamide.Sewage after stirring enters tilted plate separator from described coagulation reaction device overflow, under the effect of PAFS and polyacrylamide, with the substance trapping that is difficult to sedimentation tiny in the sewage, make it to become the flocs unit of free settling, flocs unit enters the sludge bucket of tilted plate separator under action of gravity along with plumbous mud; The sewage of discharging flocs unit becomes clear water, and this clear water enters the clear water zone of tilted plate separator; The clear water that overflows from the zig-zag overflow weir of clear water zone enters the detection groove, detects the pH value of clear water, adds sulfuric acid in clear water, and the pH value of clear water is transferred to 6~9; Separation of lead mud: plumbous mud is sent into pressure filter, get plumbous mud product and sewage; Send sewage back to former water water transfer pond;
Water outlet: the clear water of pH value in 6~9 scopes got final product by entering intermediate pool after filtering.Owing to being the optimal ph scope of finding out lead ion sedimentation and other impurity sedimentation by experiment repeatedly, find the best joint of economy and high treatment efficiency, plumbous mud and other impurity and moisture are from effective in the sewage disposal, and the water quality after the processing meets the relevant emission standards of country and local environmental regulations.

Claims (3)

1. the treatment process of a sewage is characterized in that may further comprise the steps:
A, oil removing: the sewage that produces in the store battery production is sent into first the oil trap in former water water transfer pond, removed oil slick; Simultaneously add calcium carbonate in described oil trap, the large particulate matter mineral acid in this calcium carbonate and the sewage and described calcium carbonate reaction produce throw out; Produce after the throw out, sewage enters the water reservoir in former water water transfer pond from the passage gravity flow, and sewage was stopped 6~7 days in the water reservoir in described former water water transfer pond, the concentration of stabilizing water quantity and even water;
B, pH value one-level are regulated: the sewage after the A step process is pumped into the one-level setting device, detect the pH value of sewage, throw in sodium hydroxide in sewage, make the pH value of sewage transfer to 4.9~5.1;
C, pH value secondary are regulated: sewage enters the secondary setting device from the overflow of described one-level setting device, detects the pH value of sewage, throws in sodium hydroxide in sewage, makes the pH value of sewage transfer to 9.9~10.1; The sewage self-flowing of pH value in 9.9~10.1 scopes enters coagulation reaction device;
D, coagulating: after the sewage self-flowing of C step gained enters coagulation reaction device, stir the coagulating agent and the coagulant aids that add, sewage after stirring enters tilted plate separator from described coagulation reaction device overflow, under the effect of coagulating agent and coagulant aids, with the substance trapping that is difficult to sedimentation tiny in the sewage, make it to become the flocs unit of free settling, described flocs unit enters the sludge bucket of tilted plate separator under action of gravity along with plumbous mud; The sewage of discharging described flocs unit becomes clear water, and this clear water enters the clear water zone of described tilted plate separator; The clear water that overflows from the zig-zag overflow weir of clear water zone enters the detection groove, detects the pH value of clear water, adds sulfuric acid in clear water, and the pH value of clear water is transferred to 6~9;
E, separation of lead mud: the plumbous mud in the D step is sent into pressure filter, get plumbous mud product and sewage; Send sewage back to described former water water transfer pond;
F, water outlet: the clear water of pH value in 6~9 scopes in the D step got final product by entering intermediate pool after filtering.
2. the treatment process of sewage according to claim 1, it is characterized in that: described coagulating agent is PAFS; Described coagulant aids is polyacrylamide.
3. the treatment process of sewage according to claim 1, it is characterized in that: described former water water transfer pond is provided with oil trap and water reservoir.
CN2012104467536A 2012-11-11 2012-11-11 Sewage treatment method Pending CN102942263A (en)

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Application Number Priority Date Filing Date Title
CN2012104467536A CN102942263A (en) 2012-11-11 2012-11-11 Sewage treatment method

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Application Number Priority Date Filing Date Title
CN2012104467536A CN102942263A (en) 2012-11-11 2012-11-11 Sewage treatment method

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
CN103482783A (en) * 2013-09-12 2014-01-01 安徽省绿巨人环境技术有限公司 Treatment process for plumbic acid waste water generated in production process of lead storage batteries
CN103663784A (en) * 2013-12-04 2014-03-26 天能电池(芜湖)有限公司 Treatment and recovery system for battery lead-acid waste water
CN103880208A (en) * 2014-03-05 2014-06-25 安徽永恒动力科技有限公司 Plumbic acid wastewater treatment process
CN104003553A (en) * 2014-05-30 2014-08-27 南京格洛特环境工程股份有限公司 Equipment for removing lead in wastewater of lead storage battery
CN109956582A (en) * 2017-12-25 2019-07-02 安徽洁之源环保科技有限公司 Hydrochloric acid acidleach quartz sand sewage treatment process

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103482783A (en) * 2013-09-12 2014-01-01 安徽省绿巨人环境技术有限公司 Treatment process for plumbic acid waste water generated in production process of lead storage batteries
CN103663784A (en) * 2013-12-04 2014-03-26 天能电池(芜湖)有限公司 Treatment and recovery system for battery lead-acid waste water
CN103880208A (en) * 2014-03-05 2014-06-25 安徽永恒动力科技有限公司 Plumbic acid wastewater treatment process
CN103880208B (en) * 2014-03-05 2015-09-09 安徽永恒动力科技有限公司 A kind of plumbic acid waste water treatment process
CN104003553A (en) * 2014-05-30 2014-08-27 南京格洛特环境工程股份有限公司 Equipment for removing lead in wastewater of lead storage battery
CN104003553B (en) * 2014-05-30 2016-01-13 南京格洛特环境工程股份有限公司 For the deleading equipment of lead storage battery waste water
CN109956582A (en) * 2017-12-25 2019-07-02 安徽洁之源环保科技有限公司 Hydrochloric acid acidleach quartz sand sewage treatment process

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Application publication date: 20130227