CN101948210B - Treating process of navajoite waste water - Google Patents
Treating process of navajoite waste water Download PDFInfo
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- CN101948210B CN101948210B CN2010102866496A CN201010286649A CN101948210B CN 101948210 B CN101948210 B CN 101948210B CN 2010102866496 A CN2010102866496 A CN 2010102866496A CN 201010286649 A CN201010286649 A CN 201010286649A CN 101948210 B CN101948210 B CN 101948210B
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Abstract
The invention discloses a treating process of navajoite waste water, which comprises the following steps: 1, neutralizing waste water; 2, carrying out solid-liquid separation; 3, carrying out high-efficiency coagulating sedimentation; 4, deaminizing; 5, cooling; 6, pre-filtering; 7, filtering by utilizing an active carbon filter; 8, filtering by utilizing a precision filter; 9, carrying out membrane filtration; and 10, recycling: feeding purified water into a circulating and reusing water pool and pumping to a factory for production use. By using the combination process, the invention can effectively remove vanadium, chromium, ammonia nitrogen and other harmful heavy metals in the vanadium extraction and washing waste water as well as organic and inorganic pollutants, bacteria, microorganisms and other impurities in the waste water, can effectively recover the vanadium, the chromium and the other harmful heavy metal impurities as well as the ammonia nitrogen and the other harmful substances, and can simultaneously recycle the purified water.
Description
Technical field
The present invention relates to a kind of navajoite purification of waste water and reuse technology.
Background technology
Along with the continuous exploitation in alum ore deposit, the continuous expansion of vanadium turnout, environment pollution of vanadium problem progressively increases the weight of.The vanadium extraction is a kind of chemical process of separating and extracting vanadium; Still contain a certain amount of vanadium in the waste water after the extraction; Exceed standard discharging with serious environment pollution with influence human beings'health, be the problem that environmental protection industry (epi) is explored always therefore to the purification of vanadium-containing water and the research of recovery technology.
The chemical process of handling vanadium-containing water at present both at home and abroad mainly contains: 1, ferrous sulfate-Wingdale precipitator method, this method comprise the reduction and two chemical reaction processes that neutralize, and promptly in reduction process, add the reductive agent ferrous sulfate, in N-process, add CaO.This method is prone to produce the phenomenon of corrosion and passivation, thereby influences the stability of purifying water effect; 2, sulfurous gas-sodium hydroxide-distillation concentrates the reductive agent SO in this method
2The source problem that comes seriously limited its practical ranges; 3, ion exchange method is used strong alkaline quaternary ammonium type ion exchange resin, from contain the cationic aqueous solution of plurality of impurities, separates and the recovery vanadium, and its shortcoming is the ion exchange resin large usage quantity, and regeneration is frequent, and processing cost is high.
Summary of the invention
Technical problem to be solved by this invention just provides a kind of treatment process of navajoite waste water; Can effectively remove vanadium in the waste water, chromium and high efficiente callback utilization; Simultaneously can remove ammonia nitrogen in high density, make effluent quality reach country-level standard and cyclically utilizing is purified waste water, non-secondary pollution.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of treatment process of navajoite waste water is characterized in that comprising the steps:
Step 1: in and waste water, in alum ore deposit extraction and washes, throw in milk of lime, the pH value to 7 of adjusting waste water;
Step 2: solid-liquid separation, the waste water after the neutralization is flowed into settling tank carry out just heavy the processing, make solid-liquid separation, isolated solid slag is delivered to the mine tailing storehouse;
Step 3: highly effective coagulation deposition, the supernatant after the solid-liquid separation and scoriaceous filter sepage are excluded device and carry out highly effective coagulation and precipitate with being pumped into the heavy metal gap, thoroughly remove suspended substance and various heavy metal ion, intermediate pool is sent in water outlet;
Step 4: deamination is handled, and the back of heating up of the water in the intermediate pool is promoted with pump and sends into the ammonia still deamination, and reclaim deamination and the ammoniacal liquor that forms;
Step 5: cooling, the product water after the deamination processing is carried out processing under cooling;
Step 6: coarse filtration, cooled water are delivered to coarse sand filter through the pump lifting and are carried out the coarse filtration processing, further remove impurity such as trace suspension thing;
The filter of step 7, charcoal, the water after the coarse filtration filters through activated charcoal filter again, further adsorbs and removes impurity such as organism, oils;
Step 8, smart filter, the water after the charcoal filter filters through accurate filter again;
Step 9, membrane filtration, the water after the smart filter is through being pumped to membrane filtration system, and residual impurity in the filtrate comprises most organic molecule and part ion etc. in the water, thoroughly purifies water;
As preferably, the heavy metal gap excludes the integrated metals ion remover of device in the step 3.
As preferably, the ammonia still processing parameter is in the step 4: working pressure 5KG, reclaim than 3～5 feeding temperature＞140 ℃, deamination rate 99.5%.Water in the intermediate pool heats up and adopts interchanger.Deamination and the ammoniacal liquor that forms is recycled after forming high density ammoniacal liquor.
As preferably, cooling is that the product water behind the deamination is cooled to below 40 ℃ through interchanger earlier in the step 5, gets into cooling tower again and cools off.、
As preferably, the membrane element of membrane filtration system adopts composite package in the step 9.
As preferably; Said heavy metal gap excludes device and comprises and exclude the device housing; Exclude and be provided with water inlet structure, mixing section, first reaction chamber, second reaction chamber and the separate chamber that is communicated with successively in the device housing from bottom to top; The water outlet position, below of corresponding second reaction chamber also is provided with the swash plate reaction zone, is provided with the swash plate assembly of guiding usefulness in the swash plate reaction zone.Said swash plate assembly excludes the device bottom and has collected mud-removing bucket from excluding the device housing sidewall to excluding the setting of device bottom angled.Said swash plate assembly is some parallel being formed by stacking of swash plate.
The invention has the beneficial effects as follows:
1, adopts combination process; Can effectively remove impurity such as organic and inorganic pollutant in vanadium, chromium, ammonia nitrogen, other harmful heavy metals and the waste water in vanadium extraction and the washes, bacterium, mikrobe; Effluent quality reaches national grade one discharge standard (" sewage comprehensive discharge index " GB8978-1996), and wherein the clearance of vanadium can reach more than 98.8%, and the chromium clearance reaches more than 99.7%; Ammonia nitrogen removal frank reaches more than 99.8%, and remaining suspension thing content is less than 70mg/l.
2, objectionable impuritiess such as harmful heavy metal impurity such as efficient recovery vanadium, chromium and ammonia nitrogen, cyclically utilizing is purified waste water simultaneously, has really accomplished " zero release ", and has turned waste into wealth, and in the protection environment, has practiced thrift resource again, has improved economic benefit.
3, used the heavy metal gap in the technology and excluded device, i.e. one-step purifier is combined in kinds of processes such as reaction, flocculation, deposition, filtration, clarification and accomplishes in the equipment, and processing efficiency is further improved, and has reduced the technology cost.
Description of drawings
Below in conjunction with accompanying drawing heavy metal of the present invention gap being excluded device is further described:
Fig. 1 metal gap of attaching most importance to excludes the device structural representation.
Embodiment
Embodiment for the treatment process of navajoite waste water of the present invention comprises the steps:
Step 1: in and waste water, in alum ore deposit extraction and washes, throw in milk of lime, the pH value to 7 of adjusting waste water;
Step 2: solid-liquid separation, the waste water after the neutralization is flowed into settling tank carry out just heavy the processing, make solid-liquid separation, isolated solid slag is delivered to the mine tailing storehouse;
Step 3: highly effective coagulation deposition; Supernatant after the solid-liquid separation and scoriaceous filter sepage are excluded device and carry out the highly effective coagulation deposition with being pumped into the heavy metal gap; Thoroughly remove suspended substance and various heavy metal ion; Intermediate pool is sent in water outlet, and wherein the heavy metal gap excludes the integrated metals ion remover of device;
Step 4: deamination is handled, and the back of heating up of the water in the intermediate pool is promoted with pump and sends into the ammonia still deamination, and reclaim deamination and the ammoniacal liquor that forms, and wherein the ammonia still processing parameter is: working pressure 5KG, reclaim than 3～5 feeding temperature＞140 ℃, deamination rate 99.5%.Water in the intermediate pool heats up and adopts interchanger.Deamination and the ammoniacal liquor that forms is recycled after forming high density ammoniacal liquor;
Step 5: cooling, the product water after the deamination processing is carried out processing under cooling; Wherein cooling is that the product water behind the deamination is cooled to below 40 ℃ through interchanger earlier, gets into cooling tower again and cools off;
Step 6: coarse filtration, cooled water are delivered to coarse sand filter through the pump lifting and are carried out the coarse filtration processing, further remove impurity such as trace suspension thing;
The filter of step 7, charcoal, the water after the coarse filtration filters through activated charcoal filter again, further adsorbs and removes impurity such as organism, oils;
Step 8, smart filter, the water after the charcoal filter filters through accurate filter again;
Step 9, membrane filtration, the water after the smart filter is through being pumped to membrane filtration system, and residual impurity in the filtrate comprises most organic molecule and part ion etc. in the water, thoroughly purifies water, and wherein the membrane element of membrane filtration system adopts composite package;
As shown in Figure 1, the heavy metal gap excludes device, comprises excluding device housing 1; Exclude and be provided with successively the water inlet structure that is communicated with, mixing section 2, first reaction chamber 3, second reaction chamber 4 and separate chamber 5 in the device housing 1 from bottom to top, below water outlet 41 positions of corresponding second reaction chamber 4 also are provided with the swash plate reaction zone, are provided with the swash plate assembly 7 of guiding usefulness in the swash plate reaction zone; Utilize swash plate to increase desilting area, thereby strengthen sedimentation effect, the swash plate assembly is from excluding device housing 1 sidewall to excluding the setting of device bottom angled; Exclude the device bottom and collected mud-removing bucket 10; Be provided with shore pipe 11 in mud-removing bucket 10 bottoms, mud is discharged by shore pipe 11 and is flowed into sludge thickener, utilizes after concentrating again; The swash plate assembly can further increase desilting area some swash plates 71 parallel being formed by stacking.Roof with second reaction chamber 4 is designed to frustum simultaneously, and the conical surface of frustum has guiding function, can effectively eliminate the sludgd deposition phenomenon, improves sedimentation effect; The hydraucone that the feed-water end of mixing section 2 is designed to extend out; The hydraucone that expands in the feed-water end of first reaction chamber 3 is designed to; The mixing section 2 and first reaction chamber 3 form an eddy current reaction zone; The sewage that comes out by water inlet structure with exclude the device bottom and contain the water of a large amount of flocs units and mixes the generation throwing out; After get in second reaction chamber 4 through the hydraucone overflow of first reaction chamber 3 again, water volume flow rate slows down and makes flock reunite and increase, and helps mud-water separation; Water inlet structure comprises water inlet pipe 12, and the inner water outlet of water inlet pipe 12 is located in the hydraucone of mixing section 2, and water outlet is provided with nozzle 13, makes itself and mixing section 2 and first reaction chamber 3 form the high-speed eddy reaction zone, strengthens flocculating effect.
5 tops, separate chamber are provided with filter material layer 50 and filter cap 51; Filter cap 51 1 sides are circumscribed with rising pipe 52; Filter cap 51 tops also are provided with the back-purge system 6 that is used for back flushing filter material layer 50, and after filtration after a while, filter material layer 50 can be polluted; Regularly, regularly this layer is washed, can increase the service life; Back-purge system 6 adopts multi-level water spray formula rinser.The flushing scope is big, prevents the flushing dead angle; Exclude device housing 1 outer wall and be laid with rust preventive coating, exclude device housing 1 inwall and be laid with anticorrosion epoxy resin layer, increase the equipment practical life,
Sewage send into exclude device before earlier through the medicine system dosing, after utilize water pump to send into and exclude in the device from excluding the device inner bottom part, through nozzle 13 ejections; Nozzle 13, mixing section 2 and first reaction chamber, 3 threes form a high-speed eddy reaction zone, and the sewage that is sprayed at a high speed by nozzle 13 is mixed with the water that excludes a large amount of flocs units that contain the device bottom, produce throwing out; After the hydraucone overflow of first reaction chamber 3 gets into second reaction chamber 4, with slowing down of flow velocity flock is reunited and increase, this place is the slow reaction zone of gradual change; Because action of gravity, mud is along sliding in the mud-removing bucket 10 under the inclined plate sedimentation of second reaction chamber, 4 water outlets below, and this place is the swash plate reaction zone; At this moment, the liquid on upper strata constantly obtains clarification, only contains subparticle, and this place is suspension clarifying reaction district; The clear liquid that in separate chamber 5, contains subparticle filters the back overflow through the filter material layer 50 at 5 tops, separate chamber once more with filter cap 51 and goes out, and discharges reuses by rising pipe 52, and this place is powerful suction zone; Mud is discharged by shore pipe 11 and is flowed into sludge thickener, utilizes this place's mud enrichment region after concentrating again.
Claims (7)
1. the treatment process of a navajoite waste water is characterized in that comprising the steps:
Step 1: in and waste water, in alum ore deposit extraction and washes, throw in milk of lime, the pH value to 7 of adjusting waste water;
Step 2: solid-liquid separation, the waste water after the neutralization is flowed into settling tank carry out just heavy the processing, make solid-liquid separation, isolated solid slag is delivered to the mine tailing storehouse;
Step 3: highly effective coagulation deposition, the supernatant after the solid-liquid separation and scoriaceous filter sepage are excluded device and carry out highly effective coagulation and precipitate with being pumped into the heavy metal gap, thoroughly remove suspended substance and various heavy metal ion, intermediate pool is sent in water outlet;
Step 4: deamination is handled, and the back of heating up of the water in the intermediate pool is promoted with pump and sends into the ammonia still deamination, and reclaim deamination and the ammoniacal liquor that forms;
Step 5: cooling, the product water after the deamination processing is carried out processing under cooling;
Step 6: coarse filtration, cooled water are delivered to coarse sand filter through the pump lifting and are carried out the coarse filtration processing, further remove trace suspension thing impurity;
The filter of step 7, charcoal, the water after the coarse filtration filters through activated charcoal filter again, further adsorbs and removes organism, oil impurities;
Step 8, smart filter, the water after the charcoal filter filters through accurate filter again;
Step 9, membrane filtration, the water after the smart filter is through being pumped to membrane filtration system, and residual impurity in the filtrate comprises most organic molecule and part ion in the water, thoroughly purifies water;
Step 10, cyclically utilizing, the water after the purification is sent into the round-robin pond, delivers to plant produced again with pump and uses;
Heavy metal gap in the said step 3 excludes device, comprises excluding the device housing, excludes and is provided with water inlet structure, mixing section, first reaction chamber, second reaction chamber and the separate chamber that is communicated with successively in the device housing from bottom to top; The water outlet position, below of corresponding second reaction chamber also is provided with the swash plate reaction zone, is provided with the swash plate assembly of guiding usefulness in the swash plate reaction zone, utilizes swash plate to increase desilting area; Thereby reinforcement sedimentation effect; The swash plate assembly excludes the device bottom and has collected mud-removing bucket from excluding the device housing sidewall to excluding the setting of device bottom angled, is provided with shore pipe in the mud-removing bucket bottom; Mud is discharged by shore pipe and is flowed into sludge thickener, utilizes after concentrating again; The swash plate assembly can further increase desilting area some parallel being formed by stacking of swash plate; Roof with second reaction chamber is designed to frustum simultaneously, and the conical surface of frustum has guiding function, can effectively eliminate the sludgd deposition phenomenon, improves sedimentation effect; The hydraucone that the feed-water end of mixing section is designed to extend out; The hydraucone that expands in the feed-water end of first reaction chamber is designed to; Mixing section and first reaction chamber form an eddy current reaction zone, the sewage that comes out by water inlet structure with exclude the device bottom and contain the water of a large amount of flocs units and mix the generation throwing out; After get in second reaction chamber through the hydraucone overflow of first reaction chamber again, water volume flow rate slows down and makes flock reunite and increase, and helps mud-water separation; Water inlet structure comprises water inlet pipe, and the inner water outlet of water inlet pipe is located in the hydraucone of mixing section, and water outlet is provided with nozzle, makes itself and mixing section and first reaction chamber form the high-speed eddy reaction zone, strengthens flocculating effect; The top, separate chamber is provided with filter material layer and filter cap, and filter cap one side is circumscribed with rising pipe, and filter crown portion also is provided with the back-purge system that is used for the back flushing filter material layer; After filtration after a while; Filter material layer can be polluted, and regularly, regularly this layer is washed, can increase the service life; Back-purge system adopts multi-level water spray formula rinser, and the flushing scope is big, prevents the flushing dead angle; Exclude device housing outer wall and be laid with rust preventive coating, exclude the device inner walls and be laid with anticorrosion epoxy resin layer, increase the equipment practical life.
2. the treatment process of navajoite waste water according to claim 1 is characterized in that: the heavy metal gap excludes the integrated metals ion remover of device in the step 3.
3. the treatment process of navajoite waste water according to claim 1 is characterized in that: the ammonia still processing parameter is in the step 4: working pressure 5KG, reclaim than 3～5 feeding temperature＞140 ℃, deamination rate 99.5%.
4. the treatment process of navajoite waste water according to claim 3 is characterized in that: the water in the step 4 in the intermediate pool heats up and adopts interchanger.
5. the treatment process of navajoite waste water according to claim 4 is characterized in that: deamination in the step 4 and ammoniacal liquor that forms is recycled after forming high density ammoniacal liquor.
6. according to the treatment process of each described navajoite waste water of claim 1 to 5, it is characterized in that: cooling is that the product water behind the deamination is cooled to below 40 ℃ through interchanger earlier in the step 5, gets into cooling tower again and cools off.
7. the treatment process of navajoite waste water according to claim 1 is characterized in that: the membrane element of membrane filtration system adopts composite package in the step 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102866496A CN101948210B (en) | 2010-09-14 | 2010-09-14 | Treating process of navajoite waste water |
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| CN2010102866496A CN101948210B (en) | 2010-09-14 | 2010-09-14 | Treating process of navajoite waste water |
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| CN101948210B true CN101948210B (en) | 2012-07-04 |
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| CN103771654B (en) * | 2012-10-24 | 2016-04-27 | 中国石油化工股份有限公司 | A kind for the treatment of process containing vanadium aluminium wastewater |
| CN102942263A (en) * | 2012-11-11 | 2013-02-27 | 骆驼集团华南蓄电池有限公司 | Sewage treatment method |
| CN105567976B (en) * | 2016-01-13 | 2017-12-15 | 晟通亿和（天津）企业管理咨询有限公司 | A kind of vanadium extraction industrial acidic wastewater processing and the method for valuable metal synthetical recovery |
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| CN109292884A (en) * | 2018-10-24 | 2019-02-01 | 云南同硕环保科技有限公司 | Preprocess method before a kind of film of non-ferrous metal extraction extraction raffinate |
| CN112776191B (en) * | 2021-02-01 | 2022-06-03 | 中兴惠和(山东)环保科技有限公司 | Stone cutting sewage treatment device and using method thereof |
| CN115159742A (en) * | 2022-07-14 | 2022-10-11 | 浙江东洋环境科技有限公司 | Advanced wastewater treatment process and system thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073414A (en) * | 1992-11-21 | 1993-06-23 | 唐燕 | A kind of from vanadium chromium composite waste and vanadium, chrome waste water the method for Separation and Recovery vanadium and chromium |
| WO1999055804A1 (en) * | 1998-04-27 | 1999-11-04 | Toyo Engineering Corporation | Gasification method |
| CN101113062A (en) * | 2006-07-27 | 2008-01-30 | 边绍贵 | Vanadium-containing sewage treatment method |
-
2010
- 2010-09-14 CN CN2010102866496A patent/CN101948210B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073414A (en) * | 1992-11-21 | 1993-06-23 | 唐燕 | A kind of from vanadium chromium composite waste and vanadium, chrome waste water the method for Separation and Recovery vanadium and chromium |
| WO1999055804A1 (en) * | 1998-04-27 | 1999-11-04 | Toyo Engineering Corporation | Gasification method |
| CN101113062A (en) * | 2006-07-27 | 2008-01-30 | 边绍贵 | Vanadium-containing sewage treatment method |
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