CN204111506U - A kind of Coal Chemical Industry strong brine technique of zero discharge specific equipment - Google Patents

A kind of Coal Chemical Industry strong brine technique of zero discharge specific equipment Download PDF

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CN204111506U
CN204111506U CN201420579782.4U CN201420579782U CN204111506U CN 204111506 U CN204111506 U CN 204111506U CN 201420579782 U CN201420579782 U CN 201420579782U CN 204111506 U CN204111506 U CN 204111506U
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output terminal
pond
terminal connects
equipment
softening
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兰建伟
潘文刚
江晶
苏志峰
夏俊方
张水水
赵剑锋
徐文军
陆魁
肖龙博
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SHANGHAI JINGYU ENVIRONMENTAL ENGINEERING CO., LTD.
SHENZHEN ENERGY RESOURCE COMPREHENSIVE DEVELOPMENT CO., LTD.
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SHANGHAI JINGYU ENVIRONMENT ENGINEERING Co Ltd
SHENZHEN ENERGY RESOURCE COMPREHENSIVE DEVELOPMENT Co Ltd
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Abstract

A kind of Coal Chemical Industry strong brine technique of zero discharge specific equipment, adopt that two-stage clarification is softening, ultrafiltration, ion exchange softening, two steps ro, clarification, evaporative crystallization method Coal Chemical Industry strong brine is processed, on the one hand, Water Sproading rate reaches more than 98%, saved water resources, on the other hand, the mud that system produces enters sludge treating system and carries out processed, decrease dope and arrange the environmental pollution brought outward, thus achieve the zero release of Coal Chemical Industry strong brine.

Description

A kind of Coal Chemical Industry strong brine technique of zero discharge specific equipment
Technical field
The utility model belongs to coal chemical industrial waste water process environmental technology field, specifically just relates to a kind of coal Coal Chemical Industry strong brine technique of zero discharge specific equipment.
Background technology
Modern Coal-based Chemical take coal as raw material, makes coal be converted into gas, liquid and solid phase prod, and be processed into the infant industry of a series of Chemicals further through chemical process.It mainly comprises coal gasification, liquidation of coal, tar is chemical, carbide acetylene is chemical; in recent years; Developing Coal Chemical Industry is rapid; but because Chemical Industry needs at substantial water; the water resources recycling thereupon brought becomes increasingly conspicuous with environmental protection problem, and the area being especially in many droughts short of rain is comparatively outstanding.Therefore, the environmental issue of Coal Chemical Industry urgently needs to solve.
At present, the operational path of traditional coal chemical industrial waste water process comprises: first, physico-chemical pretreatment; Secondly, A/O biochemical treatment; Finally, materialization advanced treatment.Wherein, coal chemical industrial waste water is after biochemical treatment, and the COD in water, ammonia nitrogen etc. significantly reduce, but hardly degraded organic substance still makes the indexs such as the colourity of waste water, COD cannot reach emission standard, and especially the biochemical system water outlet of supersalinity cannot carry out reuse.Therefore, the waste water (strong brine) after biochemical treatment, still needs to carry out advanced treatment.
Coal Chemical Industry strong brine deep treatment method mainly comprises immobilized biotechnology, coagulant sedimentation, absorption method and the membrane processing method such as ultrafiltration, reverse osmosis.
The fixing dominant bacteria of the first immobilized biotechnology alternative, can process containing hardly degraded organic substance waste water simultaneously targetedly.But the requirement of this technology to bacterial classification is high, be applicable to some specific used water difficult to degradate of process.
The second coagulant sedimentation strengthens sedimentation effect with coagulating agent such as aluminium salt, molysite, Polyferric Sulfate, poly-aluminium and polyacrylamide etc. in process of production, pH value will be regulated simultaneously, make suspended substance in waste water can accelerate to assemble, sink under coagulating agent effect, reach solid-liquid separation, thus suspended organic matter in waste water can be removed, effectively reduce turbidity of wastewater, but this technology requires to the pH value of waste water high.
The third absorption method utilizes solid surface to have the ability of absorption solute, colloid, and therefore, when waste water is by the very large sorbent material of specific surface area, pollutent wherein just may be adsorbed on solid particulate.This method can obtain good effect, but is only suitable for processing containing the more waste water of solid particulate, and adsorbent amount greatly, costly, easily produces secondary pollution.
The 4th kind of membrane processing method such as ultrafiltration, reverse osmosis, by most of turbidity, organism in ultrafiltration removing waste water, alleviates the pollution to reverse osmosis membrane, can extend the life-span of film, reduce running cost.Reverse osmosis membrane can not only remove the organism in waste water, but also can carry out desalination, decolouring, and effluent quality is good, directly as production cycle water, can realize zero release and the Coal Chemical Industry cleaner production of coal chemical industrial waste water.But the requirement of the membrane processing method such as ultrafiltration, reverse osmosis to influent quality, film is high, be not directly applicable to the process of all waste water.
Utility model content
The purpose of this utility model exists for above-mentioned existing Coal Chemical Industry strong brine deep treatment method to make Coal Chemical Industry strong brine reach the technological deficiency of zero release object, provide a kind of Coal Chemical Industry strong brine technique of zero discharge and specific equipment, Coal Chemical Industry strong brine is carried out two-stage clarification is softening, ultrafiltration, ion exchange softening, two steps ro, clarification, evaporative crystallization process, strong brine is made finally to realize the reuse of more than 98%, decrease dope and arrange the environmental pollution brought outward, thus achieve the target of Coal Chemical Industry strong brine zero release.
Technical scheme
In order to above-mentioned technical purpose, the utility model designs a kind of Coal Chemical Industry strong brine technique of zero discharge, and it is characterized in that, it comprises following step:
The first step, carries out two-stage clarification sofening treatment by Coal Chemical Industry strong brine, remove SS, COD in waste water, fluorine, total silicon and calcium magnesium metal ion, obtains the softening water outlet of two-stage level clarification;
Second step, carries out uf processing after the softening water outlet of the two-stage level the first step obtained clarification regulates pH to neutrality, retains SS, colloid pollution material further, obtain dense water and produce water;
3rd step, the ultrafiltration obtained by second step is produced water and is softened, and residue calcium, magnesium metal ion in absorption waste water, obtain softening water outlet;
4th step, carries out first-stage reverse osmosis concentrating and separating by the softening water outlet that the 3rd step obtains, and obtains the dense water of one-level and produces water;
5th step, the further reverse osmosis concentration of the dense water of one-level the 4th step obtained is separated and obtains the dense water of secondary and produce water;
6th step, the dense water of secondary the 5th step obtained carries out clarification, removes the PO in waste water 4 3-, CO 3 2-, SS, COD, fluorine, total metal ion such as silicon and calcium magnesium barium strontium, colloidalmaterial and dissolving CO 2, obtain purifying water outlet and dope;
7th step, carries out evaporation concentration, separation, drying by the purifying water outlet that the 6th step obtains, obtains Industrial Salt.
Further, the operating pressure of described 4th step is 15 ~ 40bar.
Further, the operating pressure of described 5th step is 25 ~ 55bar.
For Coal Chemical Industry strong brine technique of zero discharge specific equipment described above, it is characterized in that: it comprises the softening pond of one-level clarification, the softening pond of secondary clarification, ultrafiltration membrane system, ion exchange softening equipment, first-stage reverse osmosis system, two-stage reverse osmosis system, purification system, evaporation and crystallization system;
Former pond and one-level are clarified softening pond and are connected, the first intake pump connecting pipeline is equipped with, the clear liquid output terminal in the softening pond of one-level clarification connects the softening pond of secondary clarification, mud output terminal connects sludge treating system, secondary clarification softening pond clear liquid output terminal connects pH regulator pond, mud output terminal connects sludge treating system, pH regulator pond output terminal connects ultrafiltration membrane system, pH regulator pond and ultrafiltration membrane system connecting pipeline are equipped with the second intake pump, the product water end (W.E.) of ultrafiltration membrane system connects ion exchange softening equipment, dope output terminal connects go back to pH regulator pond, ion exchange softening equipment clear liquid output terminal connects first-stage reverse osmosis system, regenerative wastewater output terminal connects go back to former pond, first-stage reverse osmosis system is produced water end (W.E.) and is connected product pond, dope output terminal connects two-stage reverse osmosis system, two-stage reverse osmosis system produces water end (W.E.) and connects product pond, dope output terminal connects purification system, purification system clear liquid output terminal connects evaporation and crystallization system, dope output terminal connects dope pond, evaporation and crystallization system clear liquid output terminal connects product pond, dope output terminal connects Industrial Salt collection bag.
Further, the softening pond of described one-level clarification and secondary clarifys softening pond and are all equipped with and stir and conversion unit, mud scraper and dosing pump, sludge circulation pump, weir plate, overflow groove, and stirring and conversion unit, mud scraper are all positioned at inside, main body pond.
Further, described ultrafiltration membrane system is equipped with cartridge filter, hyperfiltration membrane assembly and dosing pump, under meter, pressure transmitter, and cartridge filter output terminal connects hyperfiltration membrane assembly.
Further, described ion exchange softening equipment is equipped with soften resin, softening agent, flow take into account acid-alkali regeneration unit, and soften resin output terminal connects softening agent, softening agent output terminal connection traffic meter.
Further, accurate filter, high-pressure pump, membrane element and energy recycle device, conductivity sensor, pressure transmitter and flow sensor, flushing water pump are all equipped with in described first-stage reverse osmosis system and two-stage reverse osmosis system inside, accurate filter output terminal connects high-pressure pump, high-pressure pump output terminal connecting membrane elements.
Further, described purification system comprises purification membrane, impurity removing equipment, degassing equipment, oxidation furnaces, and purification membrane output terminal connects impurity removing equipment, and impurity removing equipment output terminal connects degassing equipment, and degassing equipment output terminal connects oxidation furnaces.
Further, described evaporation and crystallization system comprises evaporating pot, crystallizer, centrifugal separation equipment, drying plant, and evaporating pot output terminal connects crystallizer, and crystallizer output terminal connects centrifugal separation equipment, and centrifugal separation equipment output terminal connects drying plant.
Beneficial effect
A kind of Coal Chemical Industry strong brine technique of zero discharge that the utility model provides and specific equipment, Coal Chemical Industry strong brine is carried out two-stage clarification is softening, ultrafiltration, ion exchange softening, two steps ro, clarification, evaporative crystallization process, strong brine is made finally to realize the reuse of more than 98%, decrease dope and arrange the environmental pollution brought outward, thus achieve the target of Coal Chemical Industry strong brine zero release.
Accompanying drawing explanation
Accompanying drawing 1 is process flow sheet of the present utility model.
Accompanying drawing 2 is equipment connecting relation schematic diagram of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further.
Embodiment
As shown in Figure 2, Coal Chemical Industry strong brine technique of zero discharge specific equipment, is characterized in that: it comprises the softening pond 1 of one-level clarification, the softening pond 2 of secondary clarification, ultrafiltration membrane system 3, ion exchange softening equipment 4, first-stage reverse osmosis system 5, two-stage reverse osmosis system 6, purification system 7, evaporation and crystallization system 8;
Former pond 9 and one-level are clarified softening pond 1 and are connected, the first intake pump 10 connecting pipeline is equipped with, the clear liquid output terminal in the softening pond 1 of one-level clarification connects the softening pond 2 of secondary clarification, mud output terminal connects sludge treating system 34, secondary clarification softening pond 2 clear liquid output terminal connects pH regulator pond 13, mud output terminal connects sludge treating system 34, pH regulator pond 13 output terminal connects ultrafiltration membrane system 3, pH regulator pond 13 and ultrafiltration membrane system 3 connecting pipeline are equipped with the second intake pump 14, the product water end (W.E.) of ultrafiltration membrane system 3 connects ion exchange softening equipment 4, dope output terminal connects go back to pH regulator pond 13, ion exchange softening equipment 4 clear liquid output terminal connects first-stage reverse osmosis system 5, regenerative wastewater output terminal connects go back to former pond 9, first-stage reverse osmosis system 5 is produced water end (W.E.) and is connected product pond 23, dope output terminal connects two-stage reverse osmosis system 6, two-stage reverse osmosis system 6 produces water end (W.E.) and connects product pond 23, dope output terminal connects purification system 7, purification system 7 clear liquid output terminal connects evaporation and crystallization system 8, dope output terminal connects dope pond 33, evaporation and crystallization system 8 clear liquid output terminal connects product pond 23, dope output terminal connects Industrial Salt collection bag 32.
The softening pond 1 of described one-level clarification and secondary clarifys softening pond 2 and are all equipped with and stir and conversion unit 11, mud scraper 12 and dosing pump, sludge circulation pump, weir plate, overflow groove, stir and conversion unit 11, mud scraper 12 are all positioned at inside, main body pond.
Described ultrafiltration membrane system 3 is equipped with cartridge filter 15, hyperfiltration membrane assembly 16 and dosing pump, under meter, pressure transmitter, and cartridge filter 15 output terminal connects hyperfiltration membrane assembly 16.
Described ion exchange softening equipment 4 is equipped with soften resin 17, softening agent 18, under meter 19 and acid-alkali regeneration unit, and soften resin 17 output terminal connects softening agent 18, softening agent 18 output terminal connection traffic meter 19.
Accurate filter 20, high-pressure pump 21, membrane element 22 and energy recycle device, conductivity sensor, pressure transmitter and flow sensor, flushing water pump are all equipped with in described first-stage reverse osmosis system 5 and two-stage reverse osmosis system 6 inside, accurate filter 20 output terminal connects high-pressure pump 21, high-pressure pump 21 output terminal connecting membrane elements 22.
Described purification system 7 comprises purification membrane 24, impurity removing equipment 25, degassing equipment 26, oxidation furnaces 27, and purification membrane 24 output terminal connects impurity removing equipment 25, and impurity removing equipment 25 output terminal connects degassing equipment 26, and degassing equipment 26 output terminal connects oxidation furnaces 27.
Described evaporation and crystallization system 8 comprises evaporating pot 28, crystallizer 29, centrifugal separation equipment 30, drying plant 31, evaporating pot 28 output terminal connects crystallizer 29, crystallizer 29 output terminal connects centrifugal separation equipment 30, and centrifugal separation equipment 30 output terminal connects drying plant 31.
Above-mentioned special purpose device is utilized to carry out coal chemical industry wastewater zero emission treatment process process as follows:
The first step: Coal Chemical Industry strong brine is pumped into the softening pond 1 of one-level clarification and clarify softening pond 2 with secondary, under normal temperature condition, add oxygenant, calcium hydroxide, coagulating agent and flocculation agent, SS in waste water, COD, fluorine, total metal ion such as silicon and calcium magnesium are precipitated, then, in the clear liquid obtained, add sodium carbonate, coagulating agent and flocculation agent, the SS in waste water, COD, calcium are precipitated further, mud enters sludge treating system 34.
Second step: the softening pond 2 of secondary clarification in the first step is softened before water outlet enters ultrafiltration system, first regulate pH to neutral, then ultrafiltration membrane system 3 is pumped into, retain the pollution substance such as SS, colloid further, concentrate recirculation carries out circular treatment to pH regulator pond 13, the product water SDI value obtained is less than 3, and the concentration of metal ions such as heavy metal and iron is reduced to extremely low, and the Water Sproading rate of this element is 85%-95%.
3rd step: second step ultrafiltration membrane system 3 is gone out water ion exchange softening equipment 4, by the switching performance of ion exchange resin, the metal ion such as residue calcium, magnesium in absorption waste water, regenerative wastewater is back to former pump sump and carries out circular treatment, and the clearance of heavy metal and calcium magnesium hardness is greater than 98%.Wherein, the object of this process is the pollution in order to alleviate reverse osmosis membrane, extends the work-ing life of film.
4th step: the 3rd step ion exchange softening equipment 4 water outlet is entered first-stage reverse osmosis system 5, under the pressure condition of 15-40bar, carry out concentrating and separating, retain most of salt, small organic molecule etc., make it produce water and reach recycle water standard, can enter product pond and carry out reuse, this element Water Sproading rate is 55-70%.
5th step: first-stage reverse osmosis system 5 dope of the 4th step is passed into two-stage reverse osmosis system 6, under the pressure condition of 25-55bar, further concentrating and separating, retain residual salts, small organic molecule etc., make it produce water and reach recycle water standard, can be incorporated to first-stage reverse osmosis system 5 to produce water and carry out reuse, dope enters haline water treatment system, and this element Water Sproading rate is 40-60%.
6th step: dense for two-stage reverse osmosis system 6 in the 5th step water is sent into purification system 7, carries out chemical subtraction, degassed, oxide treatment, removes the PO in waste water 4 3-, CO 3 2-, SS, COD, fluorine, total metal ion, colloid, the CO such as silicon and calcium magnesium barium strontium 2deng material, dope returns biochemical system or returns strong brine processing system after mixing coal dynamic combustion or oxidation.
7th step: evaporation and crystallization system 8 is sent in purification system 7 water outlet in the 6th step, through evaporation concentration process, distilled water reuse, dense saline solution, to crystalline element, after thickening adjustment, centrifugation and vibration drying, finally obtains Industrial Salt NaCl, purity is greater than 92%, Industrial Salt Na 2sO 4, purity is greater than 92%, can as resource reutilization; Wherein, if when in former water inlet, nitrate nitrogen content is higher, also can obtain purity 85% after refining 98% Industrial Salt NaNO 3resource reutilization.
The utility model adopts two-stage clarification softening, ultrafiltration, ion exchange softening, two steps ro, clarification, the method of evaporative crystallization processes Coal Chemical Industry strong brine, its Water Sproading rate is made to reach more than 98% on the one hand, save water resources, on the other hand, the mud that system produces enters sludge treating system and carries out processed, dope finally mixes coal dynamic combustion, or return biochemical system after oxidation or return strong brine processing system, decrease dope and arrange the environmental pollution brought outward, thus achieve the zero release of Coal Chemical Industry strong brine, in coal chemical industrial waste water treatment industry, there is huge environmental benefit and actual application value.

Claims (7)

1. a Coal Chemical Industry strong brine technique of zero discharge specific equipment, is characterized in that: it comprises the softening pond (1) of one-level clarification, the softening pond (2) of secondary clarification, ultrafiltration membrane system (3), ion exchange softening equipment (4), first-stage reverse osmosis system (5), two-stage reverse osmosis system (6), purification system (7), evaporation and crystallization system (8);
Former pond (9) and one-level are clarified softening pond (1) and are connected, the first intake pump (10) connecting pipeline is equipped with, the clear liquid output terminal in the softening pond (1) of one-level clarification connects the softening pond (2) of secondary clarification, mud output terminal connects sludge treating system (34), softening pond (2) the clear liquid output terminal of secondary clarification connects pH regulator pond (13), mud output terminal connects sludge treating system (34), pH regulator pond (13) output terminal connects ultrafiltration membrane system (3), pH regulator pond (13) and ultrafiltration membrane system (3) connecting pipeline are equipped with the second intake pump (14), the product water end (W.E.) of ultrafiltration membrane system (3) connects ion exchange softening equipment (4), dope output terminal connects go back to pH regulator pond (13), ion exchange softening equipment (4) clear liquid output terminal connects first-stage reverse osmosis system (5), regenerative wastewater output terminal connects go back to former pond (9), first-stage reverse osmosis system (5) is produced water end (W.E.) and is connected product pond (23), dope output terminal connects two-stage reverse osmosis system (6), two-stage reverse osmosis system (6) produces water end (W.E.) and connects product pond (23), dope output terminal connects purification system (7), purification system (7) clear liquid output terminal connects evaporation and crystallization system (8), dope output terminal connects dope pond (33), evaporation and crystallization system (8) clear liquid output terminal connects product pond (23), dope output terminal connects Industrial Salt collection bag (32).
2. Coal Chemical Industry strong brine technique of zero discharge specific equipment as claimed in claim 1, it is characterized in that: the softening pond (1) of described one-level clarification and secondary clarifys softening pond (2) and be all equipped with and stir and conversion unit (11), mud scraper (12) and dosing pump, sludge circulation pump, weir plate, overflow groove, to stir and conversion unit (11) and mud scraper (12) are all positioned at inside, main body pond.
3. Coal Chemical Industry strong brine technique of zero discharge specific equipment as claimed in claim 1, it is characterized in that: described ultrafiltration membrane system (3) is equipped with cartridge filter (15), hyperfiltration membrane assembly (16) and dosing pump, under meter, pressure transmitter, cartridge filter (15) output terminal connects hyperfiltration membrane assembly (16).
4. Coal Chemical Industry strong brine technique of zero discharge specific equipment as claimed in claim 1, it is characterized in that: described ion exchange softening equipment (4) is equipped with soften resin (17), softening agent (18), under meter (19) and acid-alkali regeneration unit, soften resin (17) output terminal connects softening agent (18), softening agent (18) output terminal connection traffic meter (19).
5. Coal Chemical Industry strong brine technique of zero discharge specific equipment as claimed in claim 1, it is characterized in that: accurate filter (20), high-pressure pump (21), membrane element (22) and energy recycle device, conductivity sensor, pressure transmitter and flow sensor, flushing water pump are all equipped with in described first-stage reverse osmosis system (5) and two-stage reverse osmosis system (6) inside, accurate filter (20) output terminal connects high-pressure pump (21), high-pressure pump (21) output terminal connecting membrane elements (22).
6. Coal Chemical Industry strong brine technique of zero discharge specific equipment as claimed in claim 1, it is characterized in that: described purification system (7) comprises purification membrane (24), impurity removing equipment (25), degassing equipment (26), oxidation furnaces (27), purification membrane (24) output terminal connects impurity removing equipment (25), impurity removing equipment (25) output terminal connects degassing equipment (26), and degassing equipment (26) output terminal connects oxidation furnaces (27).
7. Coal Chemical Industry strong brine technique of zero discharge specific equipment as claimed in claim 1, it is characterized in that: described evaporation and crystallization system (8) comprises evaporating pot (28), crystallizer (29), centrifugal separation equipment (30), drying plant (31), evaporating pot (28) output terminal connects crystallizer (29), crystallizer (29) output terminal connects centrifugal separation equipment (30), and centrifugal separation equipment (30) output terminal connects drying plant (31).
CN201420579782.4U 2014-09-30 2014-09-30 A kind of Coal Chemical Industry strong brine technique of zero discharge specific equipment Active CN204111506U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104276709A (en) * 2014-09-30 2015-01-14 深圳能源资源综合开发有限公司 Coal chemical industry concentrated brine zero discharge technique and special equipment thereof
CN107010768A (en) * 2017-03-01 2017-08-04 沃邦环保有限公司 Derived energy chemical strong brine Zero discharging system and its handling process

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104276709A (en) * 2014-09-30 2015-01-14 深圳能源资源综合开发有限公司 Coal chemical industry concentrated brine zero discharge technique and special equipment thereof
CN104276709B (en) * 2014-09-30 2017-01-18 深圳能源资源综合开发有限公司 Special equipment of coal chemical industry concentrated brine zero discharge technique
CN107010768A (en) * 2017-03-01 2017-08-04 沃邦环保有限公司 Derived energy chemical strong brine Zero discharging system and its handling process

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Address after: Peak building, Shangbu road Futian District Shenzhen city of Guangdong Province Jin 518031 office building 20 floor H

Co-patentee after: SHANGHAI JINGYU ENVIRONMENTAL ENGINEERING CO., LTD.

Patentee after: SHENZHEN ENERGY RESOURCE COMPREHENSIVE DEVELOPMENT CO., LTD.

Address before: Peak building, Shangbu road Futian District Shenzhen city of Guangdong Province Jin 518031 office building 20 floor H

Co-patentee before: Shanghai Jingyu Environment Engineering Co., Ltd.

Patentee before: SHENZHEN ENERGY RESOURCE COMPREHENSIVE DEVELOPMENT CO., LTD.