CN102942271A - Comprehensive treatment process of inorganic laboratory wastewater - Google Patents
Comprehensive treatment process of inorganic laboratory wastewater Download PDFInfo
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- CN102942271A CN102942271A CN2012105162060A CN201210516206A CN102942271A CN 102942271 A CN102942271 A CN 102942271A CN 2012105162060 A CN2012105162060 A CN 2012105162060A CN 201210516206 A CN201210516206 A CN 201210516206A CN 102942271 A CN102942271 A CN 102942271A
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Abstract
The invention discloses a comprehensive treatment process of inorganic laboratory wastewater and belongs to the field of comprehensive treatment technologies of inorganic laboratory wastewater. According to the comprehensive treatment process, the laboratory wastewater is treated by a two-stage flocculation-active carbon adsorption method, the effect is remarkable, the toxic and harmful substances in the wastewater can be effectively removed, the turbidity of the wastewater is improved, the chroma is effectively reduced and the harm of the laboratory wastewater to the environment is decreased, so that the comprehensive treatment process of the inorganic laboratory wastewater is an effective laboratory wastewater treatment way which is rapid, low in cost and simple in process.
Description
Technical field
The invention belongs to waste water comprehensive treatment technique field, Inorganic Experiment chamber, particularly a kind of Inorganic Experiment chamber waste water comprehensive processing technique.
Background technology
More and more deeply with extensive, the laboratory waste water of discharging from the laboratory increases the scientific experiment that the R﹠D institution of China and institution of higher learning carry out relatively, and the water quality of waste water is more complicated also.The discharging cycle of this type of waste water is indefinite, quantity discharged is irregularities also, and contained pollutant component is comparatively complicated, except containing the organism such as washing composition and common solvent, also has more soda acid, poisonous and hazardous organism, three causes thing, phenol and environmental hormone class material etc. and heavy metal, and contains the very doubt newborn substance of many character.Laboratory waste water has the bulk properties of sanitary sewage and trade effluent, and a large amount of laboratory waste water is just the same with sanitary sewage as trade effluent, can cause serious pollution to environment.Now, the normally not treated sanitary sewage of just sneaking into of waste water of scientific research institutions and the discharging of universities and colleges laboratories enters urban sewage pipe, so not only can the heavy corrosion pipeline, also can affect the processing of follow-up municipal effluent.
In the wastewater processing technology of existing Inorganic Experiment chamber, flocculent precipitation is a kind of very ripe the dirty water decontamination handles technology, be applicable to contain the more Inorganic Experiment chamber waste water of heavy metal ion, this type of precipitation has good adsorption and large loading capacity, can in heavy-metal ion removal, remove other pollutent in a part of water, thereby reduce the chemical oxygen demand (COD) of waste water, improve the biodegradability of waste water, so simple because of its technique, efficient is high, expense is lower etc., and advantage is used widely.Shortcoming is the impact of toxic confrontation treatment effect of character, economic benefit and the flocculation agent of single flocculation process consumption of being subject to waste water ph, temperature, stirring velocity and time, flocculation agent etc., flocculation agent itself itself.Active carbon adsorption is multiplex removes the organism that is dissolved state in the trace that can not remove with biology or physics, chemical method, have and absorb that the pollutent ability is strong, capacity of resisting impact load is strong, the advantage that be easy to control and management, can reuse, be widely used in water technology, having obtained preferably application and development in the combination process of dirty wastewater treatment.
Existing Inorganic Experiment chamber wastewater processing technology has flocculent precipitation, sulphide precipitation, redox neutralization precipitation method and active carbon adsorption.These methods all are the technology of the processing waste water of maturation, are widely used in the processing of laboratory waste water.The shortcoming of these methods is to be applied among the processing of Inorganic Experiment chamber waste water as single processing means, every kind for the treatment of technology is all for processing waste water of different nature, and need to carry out categorised collection and the pre-treatment of waste water, be unfavorable for focusing on of a large amount of poisonous and harmful Inorganic Experiment chamber waste water, the treatment process of ripe Inorganic Experiment chamber waste water is still few.Treatment process for the patented mandate of chemistry of laboratory waste water is also arranged at present, mainly is to be made of interior electrolyzer, micro cell, biological adsorption pond and settling tank such as CN101659504A; Its shortcoming is: 1, can only process pollutent limited in the waste water; 2, the processing water yield is limited; 3, mud etc. there is not special collection; 4, technological process is loaded down with trivial details.
The shortcoming of prior art one
Existing treatment technology is the effective laboratory inorganic wastewater treatment process that combines on the bases of comprehensively existing, ripe and economical and practical all technology.But exist following shortcoming with not enough:
(1) technological process is more, with the Industrial Wastewater Treatment basic simlarity, is unfavorable for widespread use and the popularization of laboratory inorganic wastewater treatment technology.
(2) can only process the good laboratory waste water of classifying, not good to water treatment effect that can not Complete Classification, processing efficiency is low.
Summary of the invention
The object of the invention is to the method for two-stage flocculation and charcoal absorption is combined, a kind of advantages of simple, processing efficiency is high, quick, energy consumption is low and working cost is low Inorganic Experiment chamber waste water treatment process of making up is provided.
This technique is used the method treating lab inorganic wastewater of two-stage flocculation+charcoal absorption, purpose is flocculation and these two kinds of wastewater processing technologies of charcoal absorption are combined, and provides a kind of and makes up rationally, processing efficiency is high, working cost is low, quick, technique that the simple secondary flocculation activity of technique charcoal is processed Inorganic Experiment chamber waste water.
Inorganic Experiment provided by the invention chamber waste water comprehensive processing technique, realize by following scheme:
(1) waste water enters in the wastewater collection pond and mixes;
(2) mixed waste water carries out the processing of one-level flocculation sediment through the one-level flocculation sedimentation tank, and flocculation sedimentation tank bottom mud is collected sludge sump;
(3) water outlet enters the secondary flocculation sedimentation tank and carries out the secondary flocculation treatment after the one-level flocculation treatment, and flocculation sedimentation tank bottom mud is collected sludge sump;
(4) water outlet enters activated carbon adsorber and carries out adsorption treatment after the secondary flocculation treatment;
(5) the water collecting basin discharging is delivered in water outlet after charcoal absorption;
(6) mud of collecting in the sludge sump is through the dehydration outward transport, and the water of deviating from is delivered to the wastewater collection pond.
The principle of the secondary flocculation sediment that the present invention provides+charcoal absorption waste water treatment process is: because aluminium salt and molysite make easily, price comparison economy, have simple to operate, expense is low, temperature influence is little, flco is strong to the avidity of microorganism, the advantages such as suspended substance in the water, colloid, aerobic bacteria be can effectively remove, turbidity removal, decolouring and the waste water control of Drinking Water and various industrial water supplies are widely used in.Polymerize aluminum chloride (PAC) and ferrous sulfate (FeSO
47H
2O) all be traditional flocculation agent, so as flocculation agent its versatility is arranged, be widely used.The precipitation zone of molysite is extensive far beyond aluminium salt, and molysite has the ability of stronger hydrolysis, polymerization and precipitation than aluminium salt.The precipitation zone of molysite is far beyond the broadness of aluminium salt, and this explanation molysite has stronger hydrolysis, polymerization and precipitation ability than aluminium salt.Changeable, the various impurity of wastewater property in the one-level flocculation basin is more, so need to add the strong ferrous sulfate of flocculation ability, and the pH value scope 5.5～9.8 of the waste water of ferrous sulfate adaptation, after the pH value flocculation treatment of regulating the one-level flocculation, pH value and the basicity rangeability of water are little after purifying, and the applicable pH value scope that is fit to polymerize aluminum chloride is 5.0～9.8, so just can transfer the pH value of secondary flocculation water inlet again, medicine can be effectively saved, also secondary pollution can be prevented.The microvoid structure of gac is very flourishing, and good adsorption performance is that a kind of use is the most extensive, also comparatively economic sorbent material.We utilize adsorption property, chemical property, catalytic property and the mechanical properties of gac effectively to eliminate the effective ways of organism remaining in the waste water, colloidal particle, microorganism, chlorine residue, trace heavy metal etc., and can be used to decolouring and deodorizing.Selection has larger loading capacity, the granulated active carbon of rate of adsorption, the characteristic such as regenerability is good, the life-span is long is as sorbing material faster; consider the combination with the front end flocculation treatment process; what this test was used is decline streaming activated carbon adsorber; absorbent charcoal adsorption tank is that on the spot container of streaming falls in gravity, water by abhiseca enter, the tank underflow goes out.
One-level flocculation working concentration is that the ferrous sulfate of 100mg/L is made flocculation agent, control pH value is in 8.56～9.75 scope in the treating processes, stirring velocity is 80r/min, aeration time is controlled under 20～30 minutes the condition, can effectively removes the pollution substances such as heavy metal in the sewage and sulfide; Waste water through precipitation enters secondary flocculation sedimentation tank flocculation sediment from the top rising pipe, working concentration is that the polymerize aluminum chloride of 50mg/L is as flocculation agent, the pH value is controlled in 7.6～8.01 the scope, under the condition of stirring velocity 80r/min, can effectively remove after the one-level flocculation water outlet remaining pollution substance in the waste water, make removal effect reach more satisfactory effect; Activated carbon adsorber adopts decline streaming activated carbon adsorber, and absorbent charcoal adsorption tank is that on the spot container of streaming falls in gravity, water by abhiseca enter, the tank underflow goes out, the water conservancy load is controlled at 2.0～3.3L/m
2S, be 20min duration of contact, through the waste water of charcoal absorption, collects water collecting basin through the bottom collection tube and discharge.Mud and the throw out collected from two-stage flocculation sedimentation tank bottom are discharged to sludge thickener, after the mud after concentrating is processed with the sludge treating system plate-and-frame filter press again, and further processing of dewatered sludge outward transport.
Further, the one-level flocculation adds flocculation agent ferrous sulfate (FeSO
47H
2O), the pH value of control waste liquid is about 9.25, and the concentration that adds of flocculation agent is 100mg/L, and stirring velocity is 80r/min, and aeration time is 30min.The secondary flocculation adds flocculant poly aluminum chloride (PAC), and the pH value of control waste liquid is 7.82, and the dosage of flocculation agent is 50mg/L, and stirring velocity is 80r/min.Activated carbon adsorber adopts decline streaming activated carbon adsorber, and absorbent charcoal adsorption tank is that on the spot container of streaming falls in gravity, water by abhiseca enter, the tank underflow goes out, the water conservancy load is controlled at 2.0～3.3L/m
2S, be 20min duration of contact.Adopt above-mentioned technique Inorganic Experiment chamber waste water comprehensive treatment effect better.
Above-mentioned technique can be carried out in the integrated wastewater treatment plant of Inorganic Experiment chamber, this device mainly comprises the wastewater collection pond, the one-level flocculation sedimentation tank, the secondary flocculation sedimentation tank, activated carbon adsorber, water collecting basin, sludge thickener and integral type plate-and-frame filter press, wherein, waste water in the wastewater collection pond is promoted to the one-level flocculation sedimentation tank through lift pump, the water outlet of one-level flocculation sedimentation tank is more successively through entering water collecting basin behind secondary flocculation sedimentation tank and the activated carbon adsorber, the mud of one-level flocculation sedimentation tank and secondary flocculation sedimentation tank enters sludge thickener, and mud rises to through the sludge lifting pump and carries out press filtration in the integral type plate-and-frame filter press.
In the said apparatus, one-level flocculation sedimentation tank and secondary flocculation sedimentation tank form by reaction tank and tube settler, and waste water enters tube settler after entering reaction tank again, then flows out; Tube settler forms by supernatant pond and settling tank, is equipped with one deck level inclination on settling tank top and is 60 ° swash plate.
In the said apparatus, be equipped with the agitator in order to stir in the reaction tank of one-level flocculation sedimentation tank and secondary flocculation sedimentation tank, in the reaction tank of one-level flocculation sedimentation tank, be provided with the gas blower in order to aeration.
The beneficial effect that technical solution of the present invention is brought
The present invention adopts two-stage flocculation-active carbon adsorption treatment of laboratory waste water effect remarkable, can effectively remove the hazardous and noxious substances in the waste water, improve the turbidity of sewage, and effectively reduce colourity, reduced the waste water of laboratory discharging to the harm of environment, be a kind of fast, the effective way of low-cost, technique simple treatment of laboratory waste water.The present invention compared with prior art also has following advantage:
(1) the treatment unit treatment of laboratory waste water that adopts the present invention to provide, utilize two-stage flocculation-active carbon adsorption treatment of laboratory waste water technique, the method that adopts all is first at the maturation process in field of waste water treatment, the application of technology has very high reliability, these two kinds of Method And Principles are all fairly simple, and the material of test usefulness is all cheap and easy to get, laboratory for present each colleges and universities and scientific research institutions, broken through original categorised collection, simply dealt thinking, the comprehensive treating process laboratory waste water.
(2) the two-stage flocculation-absorbent charcoal adsorber that adopts and method are processed the various laboratory waste water of the difficulty that quantity discharged is little, character is complicated, pollution range is wide, process, treatment effect is good, make the concentration of every pollutent in the sewage all reach emission standard, reduced the harm of laboratory waste water to environment, this treatment process be a kind of efficient, low-cost, technique is simple, laboratory waste water comprehensive processing method with application value.
Description of drawings
Fig. 1 is Inorganic Experiment chamber integrated wastewater treatment plant synoptic diagram;
Fig. 2 is the one-level flocculation sedimentation tank synoptic diagram in the integrated wastewater treatment plant of Inorganic Experiment chamber;
Fig. 3 is the secondary flocculation sedimentation tank synoptic diagram in the integrated wastewater treatment plant of Inorganic Experiment chamber;
Fig. 4 is the activated carbon adsorber synoptic diagram in the integrated wastewater treatment plant of Inorganic Experiment chamber;
Fig. 5 is Inorganic Experiment chamber waste water comprehensive processing technique synoptic diagram;
Number in the figure: 1-wastewater collection pond; 2-one-level flocculation sedimentation tank; 3-secondary flocculation sedimentation tank; The 4-activated carbon adsorber; The 5-water collecting basin; The 6-sludge thickener; 7-integral type plate-and-frame filter press.
Embodiment
The following examples can make those skilled in the art more fully understand the present invention, but do not limit the present invention in any way.
Embodiment
A kind of Inorganic Experiment chamber waste water comprehensive processing technique, as shown in Figure 5, realize by following scheme:
(1) waste water enters in the wastewater collection pond and mixes;
(2) mixed waste water carries out the processing of one-level flocculation sediment through the one-level flocculation sedimentation tank, and flocculation sedimentation tank bottom mud is collected sludge sump;
(3) water outlet enters the secondary flocculation sedimentation tank and carries out the secondary flocculation treatment after the one-level flocculation treatment, and flocculation sedimentation tank bottom mud is collected sludge sump;
(4) water outlet enters activated carbon adsorber and carries out adsorption treatment after the secondary flocculation treatment;
(5) the water collecting basin discharging is delivered in water outlet after charcoal absorption;
(6) mud of collecting in the sludge sump is through the dehydration outward transport, and the water of deviating from is delivered to the wastewater collection pond.
The one-level flocculation adds flocculation agent ferrous sulfate (FeSO
47H
2O), the pH value of control waste liquid is about 9.25, and the concentration that adds of flocculation agent is 100mg/L, and stirring velocity is 80r/min, and aeration time is 30min.The secondary flocculation adds flocculant poly aluminum chloride (PAC), and the pH value of control waste liquid is 7.82, and the dosage of flocculation agent is 50mg/L, and stirring velocity is 80r/min.Activated carbon adsorber adopts decline streaming activated carbon adsorber, and absorbent charcoal adsorption tank is that on the spot container of streaming falls in gravity, water by abhiseca enter, the tank underflow goes out, the water conservancy load is controlled at 2.0～3.3L/m
2S, be 20min duration of contact.
The treating processes of the tube settler in this technique is: flocculation sedimentation tank is divided into reaction tank and tube settler two portions, carries out the gas blower blast aeration by pipeline access flocculation basin, carries out adding of flocculation agent and pH regulator liquid by supporting administration device.
Above-mentioned technique can be carried out in the integrated wastewater treatment plant of Inorganic Experiment chamber, this device mainly comprises wastewater collection pond 1, one-level flocculation sedimentation tank 2, secondary flocculation sedimentation tank 3, activated carbon adsorber 4, water collecting basin 5, sludge thickener 6 and integral type plate-and-frame filter press 7, wherein, waste water in the wastewater collection pond 1 is promoted to one-level flocculation sedimentation tank 2 through lift pump, the water outlet of one-level flocculation sedimentation tank 2 is more successively through entering water collecting basin 5 behind secondary flocculation sedimentation tank 3 and the activated carbon adsorber 4, the mud of one-level flocculation sedimentation tank 2 and secondary flocculation sedimentation tank 3 enters sludge thickener 6, and mud rises to through the sludge lifting pump and carries out press filtration in the integral type plate-and-frame filter press 7.
In the said apparatus, one-level flocculation sedimentation tank and secondary flocculation sedimentation tank form by reaction tank and tube settler, and waste water enters tube settler after entering reaction tank again, then flows out; Tube settler forms by supernatant pond and settling tank, is equipped with one deck level inclination on settling tank top and is 60 ° swash plate.
In the said apparatus, be equipped with the agitator in order to stir in the reaction tank of one-level flocculation sedimentation tank and secondary flocculation sedimentation tank, in the reaction tank of one-level flocculation sedimentation tank, be provided with the gas blower in order to aeration.
With reference to accompanying drawing, be described in detail as follows:
Collecting waste water places wastewater collection pond 1 to mix, by lift pump waste water lifting is arrived one-level flocculation sedimentation tank 2, enter reaction tank A through water-in a, start the agitator b in the one-level flocculation sedimentation tank, and drop into ferrous sulfate from dispensing mouthful c and do the medicaments such as flocculation agent, pH value conditioning agent, carry out aeration by gas blower through pipeline d, flocculation reaction occurs in one-level flocculation sedimentation tank 2 generate the wadding gelatinous precipitate.After reaction is finished, waste water slowly enters tube settler B through water outlet e, it is 60 ° swash plate f that one deck level inclination is established on settling tank top, mud and throw out are deposited on tube settler B bottom C, regularly the shore pipe g with tube settler bottom C opens, and allows mud and throw out enter sludge thickener 6.Control valve during water inlet on the water inlet pipe is open mode, is closing condition in the reaction precipitation stage.Control valve on the mud collection tube of tube settler bottom C the treatment stage be closing condition, be open mode at the mud collection phase only.
Waste water after one-level flocculation flows out through the water outlet h of tube settler B upper end, enters the reaction tank D among the water-in i of secondary flocculation sedimentation tank 3.Start the agitator j in the secondary flocculation sedimentation tank, and drop into polymerize aluminum chloride from dispensing mouthful k and do the medicaments such as flocculation agent, pH value conditioning agent, flocculation reaction occurs in secondary flocculation sedimentation tank 3 generate the wadding gelatinous precipitate.After reaction is finished, waste water slowly enters tube settler E through water outlet y, it is 60 ° swash plate m that one deck level inclination is established on settling tank top, mud and throw out are deposited on tube settler F bottom, regularly the shore pipe n with tube settler C bottom opens, and allows mud and throw out enter sludge thickener 6.Control valve during water inlet on the water inlet pipe is open mode, is closing condition in the reaction precipitation stage.Control valve on the mud collection tube of tube settler bottom F the treatment stage be closing condition, be open mode at the mud collection phase only.
Waste water after the secondary flocculation through the water outlet o outflow of tube settler E upper end, enters the water-in p of activated carbon adsorber 4 upper ends.Waste water passes through gac obturator G sluggish flow from the top down in activated carbon adsorber 4, filtrate directly drains into water collecting basin 5 from water purification delivery pipe q.To carry out regular back flushing to activated carbon adsorber 4, backwashing water enters activated carbon adsorber 4 from the backwash tube u with control valve, waste water flows from the top down, and the back flushing rising pipe v that backwashing water enters with control valve from activated carbon adsorber 4 bottoms enters wastewater collection pond 1.Wherein in the back flushing stage, the control valve on back flushing water inlet pipe u and the back flushing rising pipe v is open mode; The control valve of upper end water-in p and water purification water outlet q is closing condition.In the non-back flushing stage, the control valve of back flushing water inlet pipe u and back flushing rising pipe v is closing condition, and the control valve of upper end water-in p and water purification water outlet q is open mode.
Water purification after charcoal absorption enters water collecting basin 5, after drain into urban pipe network.Enter sludge thickener 6 from mud and the flocs unit of one-level flocculation sedimentation tank 2 and the collection of secondary flocculation sedimentation tank 3 bottoms through collection tube, mud is transported outward after the sludge lifting pump rises to 7 press filtrations of integral type plate-and-frame filter press and is carried out special disposal.
Adopt above-mentioned technique and device to process waste water, influent concentration: sexavalent chrome (Cr
6+)＜0.194mg/L, manganese (Mn)＜0.289mg/L, zinc (Zn)＜0.339mg/L, copper (Cu
2+)＜0.215mg/L, iron (Fe
2+)＜1.283mg/L, sulfide＜0.141mg/L, aniline＜0.119 mg/L.
Water outlet monitoring result: ferrous sulfate (FeSO
47H
2O) and the secondary flucculation process of polymerize aluminum chloride (PAC) combination can effectively reduce other pollutents such as heavy metal in the sewage and sulfide, secondary uses polymerize aluminum chloride (PAC) to the bad Cr of removal effect in the one-level flocculation
6+Removal effect remarkable, clearance reaches 90%.And gac is best to the removal effect of the aniline that all can't reach treatment effect in front two-stage flocculation treatment, and clearance reaches 89.9%, all reaches the emission standard of national requirements, improves the turbidity of sewage, and effectively reduces colourity.In the certain situation of flocculation temperature, stirring and aeration and pH value of sewage water regulation range, various removal of pollutants are satisfactory for result, and the clearance of multiple pollutant is all more than 90%.Two-stage flocculation-activated carbon method treatment of laboratory waste water effect is remarkable, can effectively remove the hazardous and noxious substances in the water.
The above; only for the better embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (3)
1. Inorganic Experiment chamber waste water comprehensive processing technique is characterized in that this technique is as follows:
(1) waste water enters in the wastewater collection pond and mixes;
(2) mixed waste water carries out the processing of one-level flocculation sediment through the one-level flocculation sedimentation tank, and flocculation sedimentation tank bottom mud is collected sludge sump;
(3) water outlet enters the secondary flocculation sedimentation tank and carries out the secondary flocculation treatment after the one-level flocculation treatment, and flocculation sedimentation tank bottom mud is collected sludge sump;
(4) water outlet enters activated carbon adsorber and carries out adsorption treatment after the secondary flocculation treatment;
(5) the water collecting basin discharging is delivered in water outlet after charcoal absorption;
(6) mud of collecting in the sludge sump is through the dehydration outward transport, and the water of deviating from is delivered to the wastewater collection pond.
2. technique according to claim 1 is characterized in that:
One-level flocculation working concentration is that the ferrous sulfate of 100mg/L is made flocculation agent, and control pH value is in 8.56～9.75 scope in the treating processes, and stirring velocity is 80r/min, makes aeration time be controlled at 20～30 minutes;
Secondary flocculation working concentration be the polymerize aluminum chloride of 50mg/L as flocculation agent, the pH value is controlled in 7.6～8.01 the scope, stirring velocity 80r/min;
Activated carbon adsorber adopts decline streaming activated carbon adsorber, and absorbent charcoal adsorption tank is that on the spot container of streaming falls in gravity, water by abhiseca enter, the tank underflow goes out, the water conservancy load is controlled at 2.0～3.3L/m
2S, be 20min duration of contact.
3. technique according to claim 1 is characterized in that: the one-level flocculation adds the flocculation agent ferrous sulfate, and the pH value of control waste liquid is 9.25, and the concentration that adds of flocculation agent is 100mg/L, and stirring velocity is 80r/min, and aeration time is 30min; The secondary flocculation adds flocculant poly aluminum chloride, and the pH value of control waste liquid is 7.82, and the dosage of flocculation agent is 50mg/L, and stirring velocity is 80r/min; Activated carbon adsorber adopts decline streaming activated carbon adsorber, and absorbent charcoal adsorption tank is that on the spot container of streaming falls in gravity, water by abhiseca enter, the tank underflow goes out, the water conservancy load is controlled at 2.0～3.3L/m
2S, be 20min duration of contact.
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| CN105036417A (en) * | 2015-08-05 | 2015-11-11 | 枞阳县宇瑞环保科技有限公司 | Sewage treatment method for laboratory |
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| CN107381879A (en) * | 2017-09-05 | 2017-11-24 | 浙江大学宁波理工学院 | A kind of method for handling gasification of biomass gas washing wastewater and recycling wastewater treatment product |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104060301A (en) * | 2014-05-08 | 2014-09-24 | 昆明有色冶金设计研究院股份公司 | System and method for treating waste electrolyte |
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Application publication date: 20130227 |