CN203360177U - Arsenical waste water treatment system - Google Patents
Arsenical waste water treatment system Download PDFInfo
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- CN203360177U CN203360177U CN 201320415351 CN201320415351U CN203360177U CN 203360177 U CN203360177 U CN 203360177U CN 201320415351 CN201320415351 CN 201320415351 CN 201320415351 U CN201320415351 U CN 201320415351U CN 203360177 U CN203360177 U CN 203360177U
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- waste water
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Abstract
The utility model discloses an arsenical waste water treatment system which comprises a pretreatment device for adjusting the quality and quantity of waste water, a two-stage physicochemical treatment device for precipitating arsenic in the waste water, and a secondary treatment device for further removing impurities and metal ions from the waste water, wherein the three devices are sequentially communicated by pipelines. The arsenical waste water treatment system effectively filters arsenic ions out after treating the arsenical waste water, and realizes up-to-standard emission of the waste water. The system is applicable to treating the arsenical waste water.
Description
Technical field
The utility model relates to a kind of Waste Water Treatment, specifically a kind of arsenic-containing waste water treatment system.
Background technology
Arsenic and compound thereof are the carcinogenic substances that larger toxicity is arranged, if do not add control very easily to environment, once forming, its pollution also is difficult to eliminate, once particularly arsenic forms and pollutes water body, can enter human body by the surface water, underground water, harm humans health, the person poultry poisoning's event caused thus in actual life also happens occasionally.
Very active to the research of processing arsenic-containing waste water at present, but also there are many deficiencies in treatment technology, obviously lags behind surging environmental protection demand rapidly.
Concentration high (being up to 50mg/L) due to arsenic-containing waste water, change in concentration large (minimum is 5mg/L), the water yield changes greatly simultaneously, therefore should adopt efficient, low consumption, advanced person, reasonable, ripe technique and treatment system, make in wastewater treatment process to there is larger handiness, and adapting to the variation of water quality, the water yield, and strict implement national environmental protection relevant regulations, guarantee the water conditioning of water treatment system; In addition, also will be in conjunction with field condition and geographical features, in line with reduced investment, the construction costs working cost is low, easy construction, the simple principle of operation operational management, suits measures to local conditions, and selects suitable treatment system.
The utility model content
For solving the above deficiency existed in prior art, the utility model provides a kind of arsenic-containing waste water treatment system, arsenic-containing waste water by after pretreatment unit, two-stage materialization device, secondary treatment device, can effectively filter arsonium ion successively, realizes discharged wastewater met the national standard.
For achieving the above object, the technical scheme that the utility model adopts is as follows:
A kind of arsenic-containing waste water treatment system, it comprise by pipeline, be communicated with successively for the pretreatment unit of regulating waste water quality and the water yield, for the two-stage materialization device of the arsenic that precipitates waste water, for further removing the secondary treatment device of waste water impurity and metal ion.
As the restriction novel to this practicality, described pretreatment unit comprises the preaeration equalizing tank; Described preaeration equalizing tank is communicated with sewage pump, the integrated chemicals feeder of NaOH, and liquid level controller and the first air stirrer are housed in the preaeration equalizing tank.
As further restriction, described two-stage materialization device comprises the first reaction tank, the first settling tank, the second reaction tank, the second settling tank be communicated with successively by pipeline;
Be provided with the second air stirrer in described the first reaction tank; The front end of the first reaction tank is communicated with Ca (OH)
2integrated chemicals feeder, rear end is communicated with FeSO
4integrated chemicals feeder;
Described the first settling tank is communicated with sludge thickener by the first residual sea water pump;
Be provided with the 3rd air stirrer in described the second reaction tank; The front end of the second reaction tank is communicated with Ca (OH)
2integrated chemicals feeder, rear end is communicated with the PAM(polyacrylamide) integrated chemicals feeder;
Described the second settling tank is communicated with sludge thickener by the second residual sea water pump.
As further limiting, described two-stage materialization device also comprises intermediate pool, more medium filter, the neutralization tank be communicated with successively by pipeline with the second reaction tank;
Described intermediate pool is communicated with intermediate lift pump, is provided with liquid level controller in intermediate pool;
Described more medium filter is communicated with backwashing pump;
Described neutralization tank is communicated with acid chemicals feeder, is provided with the pH detector in pond.
As further limiting, described secondary treatment device is absorbent charcoal adsorber, and it is communicated with the arsenic on-line detector; The pipeline of absorbent charcoal adsorber rear end is divided into two-way, and a road is communicated with discharge tube, and another road is communicated with the front-end pipelines of preaeration equalizing tank.
Deeply limit and also have of the present utility model:
The first air stirrer, the second air stirrer, the 3rd air stirrer all are connected with blower fan.
Between described the first residual sea water pump and sludge thickener, between the second residual sea water pump and sludge thickener, pressure filter is housed.
Owing to having adopted technique scheme, compared with prior art, obtained technical progress is the utility model:
1. arsenic-containing waste water is successively by can effectively filtering arsonium ion after pretreatment unit, two-stage materialization device, secondary treatment device;
2. the Main Function of pretreatment unit is water quality and the water yield of regulating waste water, guarantees the steady running of follow-up unit, thereby improves the processing efficiency of follow-up unit.The preaeration equalizing tank both can prevent sludge settling, also can make NaOH solution and waste water merge well simultaneously, thereby improved the pH value;
3. two-stage materialization device Main Function is to remove trivalent arsenic and pentavalent arsenic in waste water, practical studies shows, pentavalent arsenic is than the easy removal of trivalent arsenic, therefore the primary and foremost purpose that materialization is processed, first trivalent arsenic to be oxidized to pentavalent arsenic in the first reaction tank, add neutralizing agent and coagulating agent afterwards in the second reaction tank, pentavalent arsenic is precipitated.In addition, utilize airborne oxygen to replace strong oxidizer to carry out trivalent arsenic in oxidized waste water, can reduce costs;
4. the effect of secondary treatment device is further to remove the impurity that can't precipitate, metal ion, pentavalent arsenic ion and, not by the trivalent arsenic ion of complete oxidation etc., make discharge of wastewater up to standard after the two-stage materialization is processed.
The utility model is applicable to arsenic-containing waste water is processed.
The accompanying drawing explanation
Below in conjunction with drawings and the specific embodiments, the utility model is done further to describe in detail.
The schematic flow sheet that Fig. 1 is the utility model embodiment.
In figure: 1, preaeration equalizing tank; 2, sewage pump; 3, the first reaction tank; 4, the first settling tank; 5, the second reaction tank; 6, the second settling tank; 7, the first residual sea water pump; 8, the second residual sea water pump; 9, sludge thickener; 10, intermediate pool; 11, intermediate lift pump; 12, more medium filter; 13, neutralization tank; 14, backwashing pump; 15, absorbent charcoal adsorber; 16, arsenic on-line detector; 17, blower fan; 18, the first air stirrer; 19, the second air stirrer; 20, the 3rd air stirrer.
Embodiment
Embodiment
A kind of arsenic-containing waste water treatment system, comprise the pretreatment unit, two-stage materialization device, the secondary treatment device that are communicated with successively by pipeline.
(1) pretreatment unit
Pretreatment unit, for regulating waste water quality and the water yield, comprises preaeration equalizing tank 1, and it is communicated with two sewage pumps 2 and the integrated chemicals feeder of NaOH.A unlatching in two sewage pumps 2, another is standby.In preaeration equalizing tank 1, liquid level controller is housed, for detection of the height of pool inner water position, when liquid level controller detects the pool inner water position lower than normal water level, it can stop the work of sewage pump 2 by the PLC Controlling System; When liquid level controller detects the pool inner water position higher than normal water level, it can open sewage pump 2 work by the PLC Controlling System; When liquid level controller detects the pool inner water position higher than the superelevation water level, the PLC Controlling System can automatic alarm.Also be provided with the first air stirrer 18 in preaeration equalizing tank 1, it is connected with blower fan 17.
(2) two-stage materialization device
Two-stage materialization device is for precipitating the arsenic of waste water, and it comprises the first reaction tank 3, the first settling tank 4, the second reaction tank 5, the second settling tank 6, intermediate pool 10, more medium filter 12, the neutralization tank 13 be communicated with successively by pipeline.
Be provided with the second air stirrer 19 in the first reaction tank 3, it is connected with blower fan 17.The first reaction tank 3 front ends are communicated with Ca (OH)
2integrated chemicals feeder, rear end is communicated with FeSO
4integrated chemicals feeder.
The first settling tank 4 is communicated with the first residual sea water pump 7, and it is communicated with sludge thickener 9, and on connecting pipe, pressure filter is housed.
Be provided with the 3rd air stirrer 20 in the second reaction tank 5, it is connected with blower fan 17.The second reaction tank 5 front ends are communicated with Ca (OH)
2integrated chemicals feeder, rear end is communicated with the integrated chemicals feeder of PAM.
The second settling tank 6 is communicated with the second residual sea water pump 8, and it is communicated with sludge thickener 9, and on connecting pipe, pressure filter is housed.
(3) secondary treatment device
The secondary treatment device is absorbent charcoal adsorber 15, and it is communicated with arsenic on-line detector 16.The pipeline of absorbent charcoal adsorber 15 rear ends is divided into two-way, and a road is communicated with discharge tube, and another road is communicated with the front-end pipelines of preaeration equalizing tank 1.
As shown in Figure 1, the technological process of the present embodiment is as follows:
At first arsenic-containing waste water enters preaeration equalizing tank 1, carries out the adjusting of the water yield and the mediation of water quality in pond, and the integrated chemicals feeder of NaOH is thrown in NaOH solution in pond.Preaeration equalizing tank 1 both can prevent sludge settling, also can make NaOH solution and waste water merge well simultaneously, thereby improved the pH value.
Then waste water enters the first reaction tank 3 through sewage pump 2, Ca (OH)
2integrated chemicals feeder is thrown in Ca (OH) to the pond Inner Front End
2solution, make the arsonium ion generation chemical reaction in waste water, and reaction formula is as follows:
After neutralization for the first time, FeSO
4integrated chemicals feeder is thrown in FeSO to rear end in pond
4solution, FeSO
4first be hydrolyzed into Fe (OH)
2, through oxidation, generate Fe (OH)
3, Fe (OH)
3be a kind of good coprecipitated dose, there is larger adsorption surface, can adsorb the throw out that wraps up arsenic; Simultaneously the oxyhydroxide of iron again can with arsenic generation chemical reaction, part generates Fe (AsO
2)
3 precipitation.Blower fan 17 blasts air by the second air stirrer 19 in pond, and air plays uniform stirring and oxygenizement, can be oxidation of ferrous iron to ferric iron.
Waste water through the first reaction tank 3 flows into the first settling tank 4 by pipeline, and a large amount of arsenic precipitate in pond, and the mud of precipitation pumps into pressure filter by the first residual sea water pump 7 and carries out the mummification dehydration, and the mud after dehydration is transported in sludge thickener 9.
The waste water of the first settling tank 4 flows into the second reaction tank 5 by pipeline, residual pollutent is further processed to Ca (OH)
2integrated chemicals feeder is thrown in Ca (OH) to the pond Inner Front End
2solution, further remove residual arsonium ion, and the integrated chemicals feeder of PAM is thrown in the PAM coagulant aids to rear end in pond, to promote the deposition efficiency of arsenic.Blower fan 17 blasts air by the 3rd air stirrer 20 in pond simultaneously, plays the effect of uniform stirring.
Waste water through the second reaction tank 5 flows into the second settling tank 6 by pipeline, and a large amount of arsenic precipitate in pond, and the mud of precipitation pumps into pressure filter by the second residual sea water pump 8 and carries out the mummification dehydration, and the mud after dehydration is transported in sludge thickener 9.
Waste water after clarification flows automatically to intermediate pool 10 from the second settling tank 6, intermediate lift pump 11 filters the waste water lifting in pond in more medium filter 12, and, after rinsing by backwashing pump 14, enters into neutralization tank 13, the interior input of neutralization tank 13 has acidic solution, to regulate the pH value.
Waste water in neutralization tank 13 flows in absorbent charcoal adsorber 15 by pipeline, to failing, by the minute impurities of gravity settling, residual arsonium ion and other heavy metals, is removed.
Through the waste water of absorbent charcoal adsorber 15, by arsenic on-line detector 16, detected: qualifiedly by discharge tube, get final product qualified discharge; Underproof waste water flows back to preaeration equalizing tank 1 to be processed again, to guarantee discharged wastewater met the national standard.
Claims (7)
1. an arsenic-containing waste water treatment system,
it is characterized in that:it comprises by pipeline, be communicated with successively for the pretreatment unit of regulating waste water quality and the water yield, for the two-stage materialization device of the arsenic that precipitates waste water, for further removing the secondary treatment device of waste water impurity and metal ion.
2. arsenic-containing waste water treatment system according to claim 1,
it is characterized in that:described pretreatment unit comprises the preaeration equalizing tank; Described preaeration equalizing tank is communicated with sewage pump, the integrated chemicals feeder of NaOH, and liquid level controller and the first air stirrer are housed in the preaeration equalizing tank.
3. arsenic-containing waste water treatment system according to claim 2,
it is characterized in that:described two-stage materialization device comprises the first reaction tank, the first settling tank, the second reaction tank, the second settling tank be communicated with successively by pipeline;
Be provided with the second air stirrer in described the first reaction tank; The front end of the first reaction tank is communicated with Ca (OH)
2integrated chemicals feeder, rear end is communicated with FeSO
4integrated chemicals feeder;
Described the first settling tank is communicated with sludge thickener by the first residual sea water pump;
Be provided with the 3rd air stirrer in described the second reaction tank; The front end of the second reaction tank is communicated with Ca (OH)
2integrated chemicals feeder, rear end is communicated with the integrated chemicals feeder of PAM;
Described the second settling tank is communicated with sludge thickener by the second residual sea water pump.
4. arsenic-containing waste water treatment system according to claim 3,
it is characterized in that:described two-stage materialization device also comprises intermediate pool, more medium filter, the neutralization tank be communicated with successively by pipeline with the second reaction tank;
Described intermediate pool is communicated with intermediate lift pump, is provided with liquid level controller in intermediate pool;
Described more medium filter is communicated with backwashing pump;
Described neutralization tank is communicated with acid chemicals feeder, is provided with the pH detector in pond.
5. arsenic-containing waste water treatment system according to claim 4,
it is characterized in that:described secondary treatment device is absorbent charcoal adsorber, and it is communicated with the arsenic on-line detector; The pipeline of absorbent charcoal adsorber rear end is divided into two-way, and a road is communicated with discharge tube, and another road is communicated with the front-end pipelines of preaeration equalizing tank.
6. arsenic-containing waste water treatment system according to claim 5,
it is characterized in that:described the first air stirrer, the second air stirrer, the 3rd air stirrer all are connected with blower fan.
7. arsenic-containing waste water treatment system according to claim 6,
it is characterized in that:between described the first residual sea water pump and sludge thickener, between the second residual sea water pump and sludge thickener, pressure filter is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320415351 CN203360177U (en) | 2013-07-12 | 2013-07-12 | Arsenical waste water treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320415351 CN203360177U (en) | 2013-07-12 | 2013-07-12 | Arsenical waste water treatment system |
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| CN203360177U true CN203360177U (en) | 2013-12-25 |
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| CN 201320415351 Expired - Lifetime CN203360177U (en) | 2013-07-12 | 2013-07-12 | Arsenical waste water treatment system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105384279A (en) * | 2015-12-09 | 2016-03-09 | 大唐国际化工技术研究院有限公司 | System and method for processing wastewater generated during regeneration of SCR denitration catalyst |
| CN105384296A (en) * | 2015-12-09 | 2016-03-09 | 大唐国际化工技术研究院有限公司 | System and method for processing wastewater generated during regeneration of SCR denitration catalyst |
| CN106007074A (en) * | 2016-07-04 | 2016-10-12 | 广西壮族自治区环境保护科学研究院 | Lead-zinc smelting wastewater treatment method |
-
2013
- 2013-07-12 CN CN 201320415351 patent/CN203360177U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105384279A (en) * | 2015-12-09 | 2016-03-09 | 大唐国际化工技术研究院有限公司 | System and method for processing wastewater generated during regeneration of SCR denitration catalyst |
| CN105384296A (en) * | 2015-12-09 | 2016-03-09 | 大唐国际化工技术研究院有限公司 | System and method for processing wastewater generated during regeneration of SCR denitration catalyst |
| CN105384296B (en) * | 2015-12-09 | 2019-06-28 | 大唐国际化工技术研究院有限公司 | A kind of processing system and processing method of the waste water that SCR denitration regeneration generates |
| CN106007074A (en) * | 2016-07-04 | 2016-10-12 | 广西壮族自治区环境保护科学研究院 | Lead-zinc smelting wastewater treatment method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160601 Address after: 050000, pay 1, Da Jie street, Qiaoxi District, Hebei, Shijiazhuang Patentee after: HEBEI OME ENVIRONMENT ENGINEERING CO.,LTD. Address before: 050000 Diamond Plaza, 466 East Zhongshan Road, Hebei, Shijiazhuang, B-911 Patentee before: Yuan Feng |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131225 |