CN207738557U - A kind of desulfurization wastewater treatment system - Google Patents

A kind of desulfurization wastewater treatment system Download PDF

Info

Publication number
CN207738557U
CN207738557U CN201721782007.9U CN201721782007U CN207738557U CN 207738557 U CN207738557 U CN 207738557U CN 201721782007 U CN201721782007 U CN 201721782007U CN 207738557 U CN207738557 U CN 207738557U
Authority
CN
China
Prior art keywords
connecting pipe
medicine
waste water
electric fenton
medicine system
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.)
Active
Application number
CN201721782007.9U
Other languages
Chinese (zh)
Inventor
龚北平
黄开进
黎英
王作辉
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.)
Fujian Longking Co Ltd.
Original Assignee
Fujian Longking 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 Fujian Longking Co Ltd. filed Critical Fujian Longking Co Ltd.
Priority to CN201721782007.9U priority Critical patent/CN207738557U/en
Application granted granted Critical
Publication of CN207738557U publication Critical patent/CN207738557U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a kind of desulfurization wastewater treatment systems.It includes water inlet system, medicine system, filtering emission system, and medicine system includes reaction chamber, electric Fenton case, flow tank, milk of lime or NaOH medicine systems, hydrochloric acid medicine system, ferrous sulfate medicine system, hydrogen peroxide medicine system, flocculation aid medicine system, flocculant medicine system and aerating system;Reaction lower box part is connected to electric Fenton lower box part by connecting pipe, electric Fenton upper box part is connected to sedimentation upper box part by connecting pipe, sedimentation lower box part is connect by connecting pipe with waste water lifting pump, waste water lifting pump is connected to membrane filter lower part by connecting pipe, filtrate is discharged in membrane filter upper end by connecting pipe, and membrane filter lower end is connect by connecting pipe with sludge collection pit;Milk of lime or NaOH medicine systems are connected to reaction chamber upper end by connecting pipe.The utility model has the advantages that effectively remove desulfurization wastewater COD.

Description

A kind of desulfurization wastewater treatment system
Technical field
The utility model is related to desulfurization wastewater process fields, more specifically say it is a kind of desulfurization wastewater treatment system, special It is not related to a kind of processing system suitable for heat-engine plant desulfurized waste water.
Background technology
Moisture in desulfurizer slurries can be enriched with Cl, F and each Heavy Metallic Elements during continuous cycle, and one Aspect accelerates the corrosion of desulphurization plant, on the other hand influences the quality of gypsum, and therefore, desulfurizer will discharge a certain amount of useless Water;To ensure that the waste water of discharge meets national effluent specification, need to enter desulfurization wastewater treatment system before desulfurization wastewater discharge, in With the processing procedures such as flocculation, precipitation and filtering, it is back to dry ash after up to standard and mixes the sprinkling of wet, coal yard or outer row.
Traditional desulfurization wastewater treatment system includes mainly water inlet system, medicine system, concentrating clarifying system, outlet system four A part;Treated waste water usually can effectively remove the heavy metal in waste water.But COD, the solid contained in waste water Suspended matter tends not to effectively remove, therefore cannot reach national wastewater discharge standard.Excessive solid suspension itself also can The problem for causing desulfurization wastewater treatment system reliability low.
Invention content
The purpose of this utility model is to provide a kind of desulfurization wastewater treatment system, can effectively remove the weight in desulfurization wastewater The pollutants such as metal can also effectively remove COD and solid suspension, to the removal rate of desulfurization wastewater COD can reach 90% with On, the removal rate to solid suspension is more than 99%, while having good decolorizing effect, to ensure that desulfurization wastewater is had Effect processing can be with qualified discharge, while also improving the reliability of desulfurization wastewater system.
To achieve the goals above, the technical solution of the utility model is:A kind of desulfurization wastewater treatment system, including water inlet System, medicine system, filtering emission system, it is characterised in that:Medicine system includes reaction chamber, electric Fenton case, flow tank, lime Breast or NaOH medicine systems, hydrochloric acid medicine system, ferrous sulfate medicine system, hydrogen peroxide medicine system, flocculation aid medicine system, Flocculant medicine system and aerating system;
Waste water baffle-box is connected to reaction chamber upper end by connecting pipe, and reaction lower box part is connected to electricity by connecting pipe Fenton lower box part, electric Fenton upper box part are connected to sedimentation upper box part by connecting pipe, sedimentation lower box part by connecting pipe with Waste water lifting pump connects, and waste water lifting pump is connected to membrane filter lower part by connecting pipe, and membrane filter upper end passes through Connecting pipe discharges filtrate, and membrane filter lower end is connect by connecting pipe with sludge collection pit, and sludge collection pit passes through company Take over road is connected to sludge reflux pump one end, and the sludge reflux pump other end connects desulfurated plaster dewatering system by connecting pipe; There is sedimentation box mixer to be set in flow tank;There are electric Fenton box mixer and electric Fenton oxidation device to may be contained within electric Fenton case It is interior;There is reaction box mixer to be set in reaction chamber;
Milk of lime or NaOH medicine systems are connected to reaction chamber upper end by connecting pipe;
Ferrous sulfate medicine system and hydrogen peroxide medicine system are connected to electric Fenton case upper end by connecting pipe respectively;
Flocculation aid medicine system and flocculant medicine system are connected to flow tank upper end by connecting pipe respectively;
Hydrochloric acid medicine system is connected in the middle part of membrane filter by connecting pipe and is located at filter membrane side-lower;
Aerating system includes Aeration fan, air distribution, nozzle, and air distribution connects Aeration fan and nozzle, spray Mouth is located in electric Fenton case, and electric Fenton box mixer is located between nozzle and electric Fenton oxidation device.
In the above-mentioned technical solutions, filtering emission system include waste water lifting pump, membrane filter, sludge collection pit and Sludge reflux pump;Water inlet system includes waste water baffle-box, waste water buffering pump;Water inlet system water source is derived from gypsum dehydration system filtrate Receiving tank underflow has waste water baffle-box overflow pipe to be set on waste water baffle-box.
The utility model has the following advantages that:
(1) in this desulfuration waste water treatment process, untreated waste water from desulphurization system, successively through neutralization case, Electric Fenton case, flow tank and membrane filter, in membrane filter, the solid particle in waste water is detached with waste water, after processing Discharge of wastewater to designated position, the solid particle separated in membrane filter enters collection mud sump and passes through sludge reflux pump It is delivered in desulfurated plaster dewatering system, can not only effectively remove the pollutants such as the heavy metal in desulfurization wastewater, to COD and admittedly Body suspended matter can also effectively remove, and 90% or more be can reach to the removal rate of desulfurization wastewater COD, to the removal rate of solid suspension More than 99%, while there is good decolorizing effect, to ensure desulfurization wastewater be effectively addressed, can be with qualified discharge, together When also improve the reliability of desulfurization wastewater system;
(2) as a result of electric Fenton and membrane filtration system, this technique floor space is small;A small amount of chemical drugs only need to be added Processing cost can be greatly lowered in agent;Processing procedure cleaning will not generate secondary pollution to water quality;
(3) applicability is wide, can handle the desulfurization wastewater that suspension content is 0.002%-10%, can effectively remove suspension Object, treated, and filtrate is limpid.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model.
1- reaction chambers in figure, 1a- react box mixer, 2- electricity Fenton casees, 2a- electricity Fenton box mixers, 2b- electricity Fenton oxygen Change device, 3- flow tanks, 3a- settles box mixer, 4- aerating systems, 5- milk of limes or NaOH medicine systems, 6- hydrogen peroxide dosings System, 7- ferrous sulfate medicine systems, 8- flocculation aid medicine systems, 9- flocculant medicine systems, 10- hydrochloric acid medicine systems, 11- Waste water lifting pump, 12- membrane filters, 13- sludge collection pits, 14- sludge reflux pumps.
Specific implementation mode
The performance that according to the present invention will be described in detail below with reference to the accompanying drawings, but they are not constituted to the utility model It limits, it is only for example.The advantages of making the utility model by explanation simultaneously, is more clear and is readily appreciated that.
Refering to known to attached drawing:A kind of desulfurization wastewater treatment system, including water inlet system, medicine system, filtering emission system, Medicine system includes reaction chamber 1, electric Fenton case 2, flow tank 3, milk of lime or NaOH medicine systems 5, hydrochloric acid medicine system 10, sulphur Sour ferrous iron medicine system 7, hydrogen peroxide medicine system 6, flocculation aid medicine system 8, flocculant medicine system 9 and aerating system 4; The flocculant of flocculant medicine system 9 includes organic sulfur, Polyferric Sulfate;
Waste water baffle-box is connected to 1 upper end of reaction chamber by connecting pipe, and 1 lower part of reaction chamber is connected to by connecting pipe Electric 2 lower part of Fenton case, electric 2 top of Fenton case are connected to 3 top of flow tank by connecting pipe, and 3 lower part of flow tank passes through connection Pipeline is connect with waste water lifting pump 11, and waste water lifting pump 11 is connected to 12 lower part of membrane filter, film mistake by connecting pipe Filtrate is discharged in 12 upper end of filter by connecting pipe, and 12 lower end of membrane filter is connected by connecting pipe and sludge collection pit 13 It connects, sludge collection pit 13 is connected to 14 one end of sludge reflux pump by connecting pipe, and 14 other end of sludge reflux pump passes through connection Pipeline connects desulfurated plaster dewatering system;There is sedimentation box mixer 3a to be set in flow tank 3;Have electric Fenton box mixer 2a and Electric Fenton oxidation device 2b may be contained in electric Fenton case 2;There is reaction box mixer 1a to be set in reaction chamber 1;
Milk of lime or NaOH medicine systems 5 are connected to 1 upper end of reaction chamber by connecting pipe;
Ferrous sulfate medicine system 7 and hydrogen peroxide medicine system 6 are connected to by connecting pipe on electric Fenton case 2 respectively End;
Flocculation aid medicine system 8 and flocculant medicine system 9 are connected to 3 upper end of flow tank by connecting pipe respectively;
Hydrochloric acid medicine system 10 is connected to 12 middle part of membrane filter by connecting pipe and is located at filter membrane side-lower;
Aerating system 4 includes Aeration fan, air distribution, nozzle, and air distribution connects Aeration fan and nozzle, spray Mouth is located in electric Fenton case 2 and above the electricity sides Fenton box mixer 2a, and electric Fenton box mixer 2a is located at nozzle and electricity is fragrant Between oxidator.Filtering emission system includes that waste water lifting pump 11, membrane filter 12, sludge collection pit 13 and sludge return Stream pump 14;Water inlet system includes waste water baffle-box, waste water buffering pump;Water inlet system water source is derived from the reception of gypsum dehydration system filtrate Tank bottom stream has waste water baffle-box overflow pipe to be set on waste water baffle-box.
The wastewater pH for neutralizing case is adjusted to 10 or more by the milk of lime or NaOH that milk of lime or NaOH medicine systems 5 add.
Since waste water quality differs greatly in each project, influence that water qualitative factor is more, therefore the stream of each medicine system Amount need to be adjusted according to contained pollutant in different quality.
A kind of processing method of desulfurization wastewater treatment system includes the following steps:
Step 1:Untreated waste water from desulphurization system enters into reaction chamber 1, in the stirring of reaction box mixer 1a The lower milk of lime added with milk of lime or NaOH medicine systems 5 or NaOH are answered, and most of heavy metal ion is made to form the hydrogen of indissoluble Oxide solid little particle, and wastewater pH is adjusted to 10 or more, precipitation is easier to produce in alkaline environment;It is main in reaction chamber 1 Want reaction equation as follows:
Zn2++2OH-=Zn (OH)2
Cr3++3OH-=Cr (OH)3
Pb2++2OH-=Pb (OH)2
Ni2++2OH-=Ni (OH)2
Step 2:Treated that desulfurization wastewater enters in electric Fenton case 2 for step 1, in electric Fenton case 2, passes through hydrogen peroxide Medicine system 6 adds hydrogen peroxide and ferrous sulfate medicament with ferrous sulfate medicine system 7 to electric Fenton oxidation device, while passing through exposure The Aeration fan of gas system 4 blasts large quantity of air into chest;And lead to the electric current of upper 0~60mA, reduce COD in waste water, aggregation Suspended matter and organic matter in waste water form micelle;This technique can reach 90% or more to the removal rate of desulfurization wastewater COD, simultaneously With good decolorizing effect;
In energization, electric Fenton oxidation device anode loses two electronics, is oxidized to Fe2+, part of sulfuric acid can be supplemented Ferrous consumption;Meanwhile oxygen is reduced into hydrogen peroxide in electric Fenton oxidation device cathode, can supplement the consumption of part hydrogen peroxide; Fe2+It reacts with hydrogen peroxide, generates the hydroxyl radical free radical and cotton-shaped Fe (OH) of strong oxidizing property3, Fe (OH)3Package is suspended Object and organic matter are co-deposited;
Reaction equation is as follows in electric Fenton oxidation device:
Anode reacts:Fe-2e-=Fe2+
Cathode reacts:O2+2H++ 2e=H2O2
Reaction in solution:H2O2+Fe2+=OH+OH-+Fe3+
Fe3++3OH-=Fe (OH)3
Step 3:Treated that desulfurization wastewater enters in flow tank 3 for step 2, mainly passes through flocculation aid in flow tank 3 Flocculation aid and flocculant is added in medicine system 8 and flocculant medicine system 9, and the hydroxide of the indissoluble of generation is reacted in step 2 Solid and sulfide solid little particle are gathered into bulky grain, in favor of subsequent thin film filtration treatment;
Reaction equation is as follows:
CmHnOp-S+Hg2+=CmHnOp+HgS↓
CmHnOp-S+Cd2+=CmHnOp+CdS↓
3CmHnOp-S+2As3+=3CmHnOp+As2S3
Wherein, CmHnOp- S indicates the organic matter containing sulfenyl, CmHnOpIndicate organic matter;
Step 4:Step 3 treated desulfurization wastewater is entered by the boosting of waste water lifting pump 11 in membrane filter 12, Mainly lead to hydrochloric acid medicine system 10 in membrane filter 12 and hydrochloric acid is added, since the precipitation reaction of step 1 to step 3 is in alkalinity The alkali that can comparatively fast carry out in environment, therefore be added in step 1 is excessive, but discharge of wastewater requires to discharge to obtain pH value of waste water Hydrochloric acid should be added herein and be used for neutralizing the OH in waste water between 6-9-, adjust pH value, equation, that is, H++OH-=H2O;
Bulky grain suspended matter is intercepted by film in waste water, and filtrate is discharged through film, from 12 top of membrane filter, The bulky grain suspended matter being blocked is gathered in membrane filter bottom and forms sludge, and sludge receipts are discharged to after collecting certain amount In collection hole 13, the unconventional sludge reflux pump of sludge in sludge collection pit 13 14 is delivered to gypsum dehydration system further after dehydration, It admixes in desulfurated plaster.
In step 3, electric Fenton oxidation device anode uses iron material matter, cathode to use carbon fiber or graphite network base or titanium ruthenium iridium not Rust steel mesh material.
In step 4, the film used in membrane filter 12 is microfiltration membranes.
The filtrate water quality of discharge is detected, testing result is as shown in table 1 below:
1 filtrate water quality detection result of table
By upper table 1 it is found that the filtrate water quality of discharge meets the requirement of rower DL/T997.
In order to more clearly illustrate that a kind of desulfurization wastewater treatment system described in the utility model takes off with existing Sulphur waste water treatment system compares possessed advantage, and staff is compared both technical solutions, comparing result As shown in table 2 below:
2 comparing result table of table
By upper table 2 it is found that a kind of desulfurization wastewater treatment system described in the utility model is handled with existing desulfurization wastewater System is compared, higher to the removal rate of desulfurization wastewater COD, and removal rate is 90% or more, and applicability is wide, after desulfurization wastewater processing Water stabilization it is up to standard.
Other unaccounted parts belong to the prior art.

Claims (2)

1. a kind of desulfurization wastewater treatment system, including water inlet system, medicine system, filtering emission system, it is characterised in that:Dosing System includes reaction chamber (1), electric Fenton case (2), flow tank (3), milk of lime or NaOH medicine systems (5), hydrochloric acid medicine system (10), ferrous sulfate medicine system (7), hydrogen peroxide medicine system (6), flocculation aid medicine system (8), flocculant medicine system (9) and aerating system (4);
Waste water baffle-box is connected to reaction chamber (1) upper end by connecting pipe, and reaction chamber (1) lower part is connected to by connecting pipe Electric Fenton case (2) lower part, electric Fenton case (2) top are connected to flow tank (3) top, flow tank (3) lower part by connecting pipe It is connect with waste water lifting pump (11) by connecting pipe, waste water lifting pump (11) is connected to membrane filter by connecting pipe (12) filtrate is discharged in lower part, membrane filter (12) upper end by connecting pipe, and membrane filter (12) lower end passes through connecting tube Road is connect with sludge collection pit (13), and sludge collection pit (13) is connected to sludge reflux pump (14) one end by connecting pipe, dirty Mud reflux pump (14) other end connects desulfurated plaster dewatering system by connecting pipe;There is sedimentation box mixer (3a) to be set to heavy It drops in case (3);There are electric Fenton box mixer (2a) and electric Fenton oxidation device (2b) to may be contained in electric Fenton case (2);There is reaction Box mixer (1a) is set in reaction chamber (1);
Milk of lime or NaOH medicine systems (5) are connected to reaction chamber (1) upper end by connecting pipe;
Ferrous sulfate medicine system (7) and hydrogen peroxide medicine system (6) are connected to by connecting pipe on electric Fenton case (2) respectively End;
Flocculation aid medicine system (8) and flocculant medicine system (9) are connected to flow tank (3) upper end by connecting pipe respectively;
Hydrochloric acid medicine system (10) is connected in the middle part of membrane filter (12) by connecting pipe and is located at filter membrane side-lower;
Aerating system (4) includes Aeration fan, air distribution, nozzle, and air distribution connects Aeration fan and nozzle, nozzle In electric Fenton case (2), electric Fenton box mixer (2a) is located between nozzle and electric Fenton oxidation device.
2. a kind of desulfurization wastewater treatment system according to claim 1, it is characterised in that:Filtering emission system includes waste water Elevator pump (11), membrane filter (12), sludge collection pit (13) and sludge reflux pump (14);Water inlet system includes that waste water is slow Rush case, waste water buffering pump;Water inlet system water source is derived from gypsum dehydration system filtrate receiving tank underflow, there is waste water baffle-box overflow pipe Road is set on waste water baffle-box.
CN201721782007.9U 2017-12-19 2017-12-19 A kind of desulfurization wastewater treatment system Active CN207738557U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721782007.9U CN207738557U (en) 2017-12-19 2017-12-19 A kind of desulfurization wastewater treatment system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721782007.9U CN207738557U (en) 2017-12-19 2017-12-19 A kind of desulfurization wastewater treatment system

Publications (1)

Publication Number Publication Date
CN207738557U true CN207738557U (en) 2018-08-17

Family

ID=63118700

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721782007.9U Active CN207738557U (en) 2017-12-19 2017-12-19 A kind of desulfurization wastewater treatment system

Country Status (1)

Country Link
CN (1) CN207738557U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109626716A (en) * 2018-12-10 2019-04-16 中海油天津化工研究设计院有限公司 A kind of method of " coagulating sedimentation-aerobic-chemical oxidation " Combined Treatment flue gas desulfurization waste-water
CN110668637A (en) * 2019-09-18 2020-01-10 海绵城市投资有限公司 Pit and pond wastewater treatment method and device
CN111204896A (en) * 2020-01-15 2020-05-29 国网山东省电力公司电力科学研究院 Desulfurization wastewater pretreatment process based on flocculation-Fenton-like coupling method and activating agent

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109626716A (en) * 2018-12-10 2019-04-16 中海油天津化工研究设计院有限公司 A kind of method of " coagulating sedimentation-aerobic-chemical oxidation " Combined Treatment flue gas desulfurization waste-water
CN110668637A (en) * 2019-09-18 2020-01-10 海绵城市投资有限公司 Pit and pond wastewater treatment method and device
CN111204896A (en) * 2020-01-15 2020-05-29 国网山东省电力公司电力科学研究院 Desulfurization wastewater pretreatment process based on flocculation-Fenton-like coupling method and activating agent

Similar Documents

Publication Publication Date Title
CN207738557U (en) A kind of desulfurization wastewater treatment system
CN107473466B (en) Treatment method of beneficiation wastewater
WO2019196053A1 (en) High-efficiency energy-saving integrated water treatment device
CN107304093A (en) Containing formaldehyde, the integrated deep treatment method of methanol waste water and processing unit
CN110240331B (en) Method and system for performing biogas desulfurization by using electrolysis and air flotation to treat biogas slurry
CN107337301A (en) A kind of method of the electric Fenton processing waste water of additional hydrogen peroxide
CN109437448A (en) Pb-Zn deposits beneficiation wastewater treatment for reuse devices and methods therefor
CN113443758A (en) Full-quantitative pretreatment device, treatment system and treatment method for landfill leachate
CN203382613U (en) Treatment equipment for removing fluorine and calcium ions in wastewater of coal chemical industries
CN212954727U (en) Viscose fiber production drainage processing apparatus
CN106517578A (en) Heavy metal wastewater treatment method by breaking complexes by granular sludge and ceramic membrane
CN207726882U (en) concentrated water processing system
CN106242131A (en) A kind of sulfur-containing waste water processing system and process process thereof
CN209081653U (en) A kind of novel petrochemical sewage treatment equipment
CN105621725B (en) Heavy metal-polluted acid waste water treatment system
CN216890527U (en) Silane effluent disposal system
CN107162122A (en) Iron carbon microvovtex flocculation clarifier
CN203568922U (en) Deep sewage treatment system
CN208471826U (en) Catalyst production waste water processing system
CN216191754U (en) Reclaimed rubber wastewater treatment system
CN210313908U (en) Waste water treatment device for processing phthalocyanine blue pigment
CN212954743U (en) Oily sewage treatment device
CN215855636U (en) System for compound desorption COD of coking wastewater
CN106587420A (en) System and method for removing heavy metals from wastewater
CN217323713U (en) Magnesium desulfurization wastewater treatment integrated equipment

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant