CN205556295U - Desulfurization waste water softens processing apparatus - Google Patents
Desulfurization waste water softens processing apparatus Download PDFInfo
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- CN205556295U CN205556295U CN201520735691.XU CN201520735691U CN205556295U CN 205556295 U CN205556295 U CN 205556295U CN 201520735691 U CN201520735691 U CN 201520735691U CN 205556295 U CN205556295 U CN 205556295U
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- desulfurization waste
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Abstract
The utility model discloses a desulfurization waste liquid softens processing apparatus, including desulfurization waste water baffle -box (1), desulfurization waste water pump (2), softening agent dosing tank (3), softening agent dosing pump (4), heavy metal remover dosing tank (5), heavy metal remover dosing pump (6), coagulant dosing tank (7), coagulant dosing pump (8), line mixer (9), integration desulfurization waste water softening installation (10), middle water tank (11), middle water pump (12), cation softening installation (13). Most calcium magnesium ion is got rid of at integration desulfurization waste water softening installation to desulfurization waste water, mix congeal, clarification and filtration. The clear water gets into thermopnore cation softening installation, the residual harness of further getting rid of. The utility model discloses a degree of depth to desulfurization waste water is softened, avoids subsequent evaporative concentration or crystallization scale deposit.
Description
Technical field
The utility model relates to Industrial Wastewater Treatment and resource circulation utilization technical field, particularly relates to a kind of desulfurization wastewater sofening treatment device.
Background technology
Wet desulphurization Waste Water Treatment in thermal power plant uses dosing, coagulation, clarification process, in three headers, respectively by feeding lime or soda ash, part removes the hardness in waste water and heavy metal, remove removing heavy metals by organic sulfur, remove oil removal by adding flocculant and flocculation aid.The last separation realizing suspension and water in depositing reservoir.Suspension forms thickened sludge under gravity, deposits to bottom, and mud is taken away by sludge circulation pump, through plate and frame filter press compression outward transport；Primary water is overflowed pond body by pond periphery overflow groove, from flowing into reuse or qualified discharge in filtered water tank.Investigate 20 thermal power plants, only 5 power plant's operational excellences.The subject matter existed is that three header coagulation effects are poor, and depositing reservoir separating effect is the best, filter press majority fault, and processing system is complicated, and floor space is big, arranges, it is impossible to realize zero-emission outside desulfurization wastewater.
The patent of invention of Application No. 201010187343.5, disclose reducing amount of volatile heavy metal sludge in desulfurization wastewater processing system and processing method, use two-stage chemical precipitation technique that desulfurization wastewater is processed, it is acid for adding hydrochloric acid regulation waste water in first order chemical precipitation, addition aluminium polychloride be flocculating agent, polyacrylamide be that flocculation aid carries out flocculation reaction, make the body refuse that the first order precipitates significantly reduces containing volatile heavy metal, and body refuse amount is relatively big, can return Boiler Mixed Burning；Adding calcium hydroxide regulation waste water in the chemical precipitation of the second level is alkalescence, add the heavy metal precipitator-organic sulfur (TMT15) heavy metal in waste water and be combined the chelate that generation is highly stable, add molysite be flocculating agent, polyacrylamide be flocculation aid, make in the body refuse that the second level precipitates rich in heavy metal, and body refuse amount is less, can individually bury disposal.In clear water, add hydrochloric acid and sodium hypochlorite, make the water outlet after process reach GB8978-1996 and DL/T 997-2006 standard-required.
The patent of invention of application number 201110377524.9, disclose a kind of water-saving clarification cleaning system and technique, the pending former water in former pond carries out dosing mixing by multisection type pipe-line mixer, eddy flow enters the fin flocculation reactor flocculation of variable orifice footpath, enter back into precipitate and separate device and carry out separation of solid and liquid, filtering finally by filter, it is stand-by that water outlet enters clear water reserviors deposit；Precipitate and separate device separation body refuse is concentrated by deposition bucket, concentrates rear section active sludge and is back to flocculation reactor by EGR, and residue body refuse is by filter press press filtration, and filtrate is back to former pond；Filter backwash draining is back to former pond.It mixes, flocculate, precipitate, filtration step completes in integrated high-efficiency clarification clarifier, refluxed by the concentration cycles of body refuse and reduce residue body refuse moisture content, by filter-pressing device filtrate and filter backwash Water Sproading extremely former pond, thus greatly reduce clarification and purify the outer discharge rate of technique, improve the water-saving performance of process system.Compared with conventional coagulation clarification technique, this technique has good water-saving performance.
Above-mentioned patent preferably eliminates desulfurization wastewater suspension and heavy metal ion.But hardness ions content is higher in the desulfurization wastewater after Chu Liing.When needs desulfurization wastewater realizes zero-emission, use above-mentioned patented method, it is impossible to avoid producing fouling in subsequent evaporation concentration technology, affect properly functioning.
Summary of the invention
Technical problem to be solved in the utility model is, the processed waste water hardness existed for above-mentioned desulfuration waste water treatment process is higher, causes the problem that fouling during subsequent treatment process is serious, it is provided that a kind of desulfurization wastewater sofening treatment device.
Described a kind of desulfurization wastewater sofening treatment device, including desulfurization wastewater baffle-box (1), desulfurization wastewater pump (2), softening agent dosing tank (3), softening agent dosing pump (4), heavy metals removal agent dosing tank (5), heavy metals removal agent dosing pump (6), coagulant dosing tank (7), coagulant dosing pump (8), pipe-line mixer (9), integrated desulfurization waste water softening plant (10), intermediate water tank (11), middle water pump (12), cation softening plant (13).Its technical characterstic is that the entrance point of desulfurization wastewater baffle-box (1) is connected with the desulfurated plaster Filtrate separator of original system, and the port of export is connected with the entrance of desulfurization wastewater pump；The arrival end of described pipe-line mixer is connected with the port of export of desulfurization wastewater pump (2), arrange three altogether, the dosing mouth of first pipe-line mixer (9) exports with the softening agent dosing pump (4) of chemicals dosing plant and is connected, the dosing mouth of second pipe-line mixer (9) is connected with heavy metals removal agent dosing pump (6) outlet, and the dosing mouth of the 3rd pipe-line mixer (9) is connected with coagulant dosing pump (8) outlet；Described integrated desulfurization waste water softening plant (10) entrance and the 3rd pipe-line mixer outlet are connected, and outlet is connected with intermediate water tank (11), middle water pump (12), cation softening plant (13) successively.Described integrated desulfurization waste water softening plant (10), reacts inner core, clarification urceolus, nutsch filter, agitator including housing and layout speed change within it.
When the utility model uses, desulfurization wastewater baffle-box (1) collects the desulfurization wastewater from gypsum dehydration separator, pressurize through desulfurization wastewater pump (2), enter pipe-line mixer (9), mix with from chemical agents such as the softening agent of chemicals dosing plant, heavy metals removal agent, coagulant, precipitation of heavy metals ion and part calcium ions and magnesium ions, and make suspension form the floccule of free settling, enter integrated desulfurization waste water softening plant (10), most calcium ions and magnesium ions precipitates, it is achieved mud and the separation of clear water.Enter intermediate water tank (11) at clear water, after middle water pump (12) pressurization, enter cation softening plant (13), remove the hardness in clear water further.
Compared with prior art, the beneficial effects of the utility model are, eliminate the scale-forming ion in desulfurization wastewater, heavy metal ion and suspension the most thoroughly.The problem avoiding subsequent evaporation concentration technology device fouling.Simpler than traditional desulfurization wastewater pretreating process flow process, reliability is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Wherein, 1-desulfurization wastewater baffle-box, 2-desulfurization wastewater pump, 3-softening agent dosing tank, 4-softening agent dosing pump, 5-heavy metals removal agent dosing tank, 6-heavy metals removal agent dosing pump, 7-coagulant dosing tank, 8-coagulant dosing pump, 9-pipe-line mixer, 10-integrated desulfurization waste water softening plant, 11-intermediate water tank, water pump in the middle of 12-, 13-cation softening plant.
Detailed description of the invention
Certain power plant is as shown in table 1 from the desulfurization waste water quality of gypsum dehydration separator.
The desulfurization wastewater of gypsum dehydration separator, about 10t/h, gravity flow enters desulfurization wastewater baffle-box (1), after desulfurization wastewater pump (2) pressurizes, sequentially enters in three pipe-line mixers (9).From the softening agent of softening agent dosing tank (3), softened dose of dosing pump (4) adds first pipe-line mixer (9)；From the heavy metals removal agent of heavy metals removal agent dosing tank (5), add second pipe-line mixer (9) through heavy metals removal agent dosing pump (6)；From the coagulant of coagulant dosing tank (7), add the 3rd pipe-line mixer (9) through coagulant dosing pump (8).Heavy metal ion in desulfurization wastewater and Ca2+、Mg2+Respectively with chemical agent, generate heavy metal sulfide, CaCO3And MgCO3Solid particle precipitates, under the effect being deposited in coagulant of generation, and the precipitation particles generation alumen ustum that suspension original with desulfurization wastewater and reaction generate.Reacted desulfurization wastewater enters integrated desulfurization waste water softening plant (10), increases further, form the floccule being prone to sedimentation in speed change reaction inner core, it is deflected into urceolus, clarifying under gravity, floccule sinks to generating mud, clear water flows through nutsch filter and filters further.In above process, in desulfurization wastewater, major part heavy metal and hardness are removed, and residual harness is about 40mg/L.Filtrate enters intermediate water tank (11), after middle water pump (12) pressurization, enters cation and softens bed (13).In cation softens bed (13), the residual hardness of desulfurization wastewater and the Na type resin cation generation exchange reaction in softening plant, Ca2+、Mg2+Replaced it is fixed on resin, makes the hardness of desulfurization wastewater reduce further, about 2-5mg/L.By said process, the hardness overwhelming majority in desulfurization wastewater is removed.
When the desulfurization wastewater after softening enters follow-up evaporation and concentration or crystallization processes, in consersion unit, it is not likely to produce calcium and magnesium dirt.
Claims (1)
1. a desulfurization wastewater sofening treatment device, it is characterised in that: the entrance point of desulfurization wastewater baffle-box (1) is connected with the desulfurated plaster Filtrate separator of original system, and the port of export is connected with the entrance of desulfurization wastewater pump；The arrival end of described pipe-line mixer is connected with the port of export of desulfurization wastewater pump (2), arrange three altogether, the dosing mouth of first pipe-line mixer (9) exports with the softening agent dosing pump (4) of chemicals dosing plant and is connected, the dosing mouth of second pipe-line mixer (9) is connected with heavy metals removal agent dosing pump (6) outlet, and the dosing mouth of the 3rd pipe-line mixer (9) is connected with coagulant dosing pump (8) outlet；Described integrated desulfurization waste water softening plant (10) entrance and the 3rd pipe-line mixer outlet are connected, and outlet is connected with intermediate water tank (11), middle water pump (12), cation softening plant (13) successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520735691.XU CN205556295U (en) | 2015-09-22 | 2015-09-22 | Desulfurization waste water softens processing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520735691.XU CN205556295U (en) | 2015-09-22 | 2015-09-22 | Desulfurization waste water softens processing apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN205556295U true CN205556295U (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520735691.XU Expired - Fee Related CN205556295U (en) | 2015-09-22 | 2015-09-22 | Desulfurization waste water softens processing apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112875829A (en) * | 2021-01-25 | 2021-06-01 | 江苏海容热能环境工程有限公司 | Desulfurization wastewater purification system and purification method based on self-crystallization fluidized bed |
-
2015
- 2015-09-22 CN CN201520735691.XU patent/CN205556295U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112875829A (en) * | 2021-01-25 | 2021-06-01 | 江苏海容热能环境工程有限公司 | Desulfurization wastewater purification system and purification method based on self-crystallization fluidized bed |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 Termination date: 20180922 |
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| CF01 | Termination of patent right due to non-payment of annual fee |