CN102390905A - Advanced treatment device and method of micropolluted organic sewage - Google Patents
Advanced treatment device and method of micropolluted organic sewage Download PDFInfo
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Abstract
The invention discloses an advanced treatment device and method of micropolluted organic sewage. The advanced treatment device comprises an adjusting tank, an oxidization tank, an aeration tank and a coagulation and separation tank which are communicated, wherein the upper lateral wall of the adjusting tank is provided with a water inlet valve, and the top of the adjusting tank is communicated with an acid feeding pot; the top of the oxidization tank is respectively communicated with an oxidant feeding pot and a catalyst feeding pot; the top of the aeration tank is communicated with an alkaline feeding pot; the top of the coagulation and separation tank is respectively communicated with a coagulant aid feeding pot and a water outlet pump; and the lateral wall of the lower part of the coagulation and separation tank is communicated with a sludge discharge pump. The method comprises the following steps of: (1), discharging water or micropolluted water into the adjusting tank; (2) adding acid to the adjusting tank; (3) adding hydrogen peroxide to the oxidization tank, respectively adding catalysts and stirring; (4) feeding alkaline into the aeration tank for aeration; (5) adding a coagulant aid to the coagulation and separation tank; (6) separating water and flocculent bodies; and (7) removing sludge from the separated flocculent bodies and separating water for recycling to obtain the advanced treatment circulating process of the organic sewage. The invention has the advantages of simple structure, running reliability, low cost and convenience for operation.
Description
Technical field
The present invention relates to little pollution organic sewage advanced treatment technology, particularly a kind of can be with the device and the micro-polluted water deep treatment method thereof that carry out reuse after little pollution organic sewage advanced treatment.
Background technology
Along with Economic development, social each side further strengthens the demand of water resources, and it is big particularly to exist a lot of water consumptions at industrial circle, the industry that water-quality guideline is strict.Heating power, electric power etc. have the enterprise of extensive steam generating plant operation aspect BW, all to adopt fresh tap water to carry out processing back supplies such as desalination.The daily water yield is very big, and in present urban development, under the background of water resources growing tension, enterprise produces and controls on the running cost in expansion regeneration, the minimizing consumption of materials and all received very large restriction.And this type of industry is all higher relatively for water quality requirement, and middle water or little pollution organic sewage of general Sewage Plant can not reach the use standard.And aspect the processing of middle this type of water micro-polluted water, it is big to exist intractability, the characteristics of technology fluctuation of service, and general processing mode does not all reach ideal standard.Perhaps technology can meet the demands but to handle working cost too high, and operating process is loaded down with trivial details, equipment requirements complicacy etc., cause can not large-scale application in production practice.
Treatment process to middle water, micro-polluted water mainly contains at present: Biological Pretreatment method, general chemistry oxidation style, active carbon adsorption, membrane separation process and advanced oxidation processes etc.
Table 1 treatment process commonly used relatively
These several class methods all have certain effect for the processing of different aspect micro-polluted water, but exist following shortcoming on the whole:
One, the organic matter removal degree is very limited, and to coming water COD, the clearance performance of BOD is general;
Two, investment and working cost are bigger, more complicated in the management, the poor stability of technology;
Three, above-mentioned technology is suitable for that present field is limited, only little in the part water yield, water-quality guideline requires low middle water reuse field to use to some extent, and is also inapplicable for the unit that water consumption is big and water quality requirement is high.
At present; Take the pollution organic sewage that advanced oxidation processes only can treatment of high concentration; Therefore, a kind of little pollution organic sewage advanced treatment technology is provided, the micro-polluted water advanced treatment apparatus that carries out reuse after little pollution organic sewage advanced treatment is become the technical problem that needs to be resolved hurrily at present.
Summary of the invention
The object of the present invention is to provide a kind of little pollution organic sewage advanced treatment apparatus and treatment process thereof, this method is can be with water in the Sewage Plant or tint the Technology that industry that water treatment to water quality standard has relatively high expectations is carried out reuse.Its technology one-piece construction is simple, reliable, and cost is low, and level of automation is high, is convenient to operation.
The objective of the invention is to realize through following technical proposals.
Little pollution organic sewage advanced treatment apparatus comprises the equalizing tank, oxidation pond, aeration tank and the coagulation separation cell that are communicated with successively, and said equalizing tank upper portion side wall is provided with water intaking valve, connects equalizing tank and be connected with acid to add jar; Said oxidation pond is communicated with respectively that oxygenant adds jar and catalyzer adds jar; Said aeration tank is communicated with alkali and adds jar; Said coagulation separation cell is communicated with coagulant aids respectively and adds jar and go out water pump, and coagulation separation cell lower sides is communicated with sludge pump.
Apparatus of the present invention are further characterized in that:
Said acid adds and jar adds pump through acid and be communicated with equalizing tank, is provided with the equalizing tank whisking appliance in the equalizing tank, is provided with blow-off valve bottom the body of pond.
Said oxidation pond is divided into 3-10 pond body, and catalyzer adds jar and is communicated with 3-10 catalyzer respectively and adds pump and be communicated with first oxidation pond and last step oxidation pond pond body, and oxygenant adds jar and adds pump through oxygenant and be communicated with the first oxidation pond pond body; Be respectively equipped with the equalizing tank whisking appliance in the said oxidation pond 3-10 pond body, body bottom in pond is provided with blow-off valve.
Said alkali adds and jar adds pump through alkali and be communicated with the aeration tank, is provided with aerator bottom the body of pond, aeration tank.
Said coagulation separation cell is divided into two pond bodies, is respectively coagulation basin and separation cell, and coagulant aids adds and jar adds pump through coagulant aids and be communicated with coagulation basin, is provided with the equalizing tank whisking appliance in the coagulation basin, is provided with blow-off valve bottom the body of pond.
Said separation cell top is communicated with out water pump, and lower sides is communicated with sludge pump; The bottom is provided with blow-off valve.
The present invention also provides a kind of little pollution organic sewage deep treatment method, and this method comprises the steps:
1) the middle water or the micro-polluted water that Sewage treatment systems are produced enter equalizing tank, and wherein, middle water or micro-polluted water COD value are at 40-60mg/L;
2) in equalizing tank, adding mass ratio is sulfuric acid or the hydrochloric acid of 1～6mmol/L, regulates pH to 2.5～3;
3) will be through step 2) middle water or micro-polluted water input oxidation pond after the s.t., oxidation pond is made up of at least three parts, and every part is made up of one or more placed in-line subregions; Add pure ydrogen peroxide 50 in first oxidation zone; The ratio of the little pollution water inlet COD value after the adding concentration of pure ydrogen peroxide 50 and the s.t. is 1～4: 1; It is ferrous to add catalyst sulfuric acid respectively in first oxidation zone and last step oxidation zone; Wherein the last step oxidation zone adds excessive ferrous sulfate, and the total add-on of oxidation zone is the ferrous sulfate of mass concentration 0.5～3.0mmol/L; Oxidation zone is used air or mechanical stirring 20～120min;
4) with the reactant input aeration tank of step 3), add alkali and regulate pH to 7～7.5; The aeration zone is provided with aerating apparatus, and purpose is that excessive ferrous sulfate is oxidizing to ferric sulfate, guarantees that organic concentration drops to lower in the water;
5) the step 4) reactant is placed the coagulation separation cell, the coagulation separation cell is divided into coagulation basin and separation cell, adds coagulant aids at coagulation basin, forms the bigger flco of volume with suspended substance, colloid in the reactant;
6) will place separation cell than big flocculating body through what coagulation basin formed, and adopt deposition, air supporting, filtering separation method to carry out separating of water and flco;
7) with the isolating flco of step 6) through the sludge pump spoil disposal, water outlet after the separation gets into reclaiming system, promptly accomplishes the working cycle of a little pollution organic sewage advanced treatment.
The inventive method is further characterized in that:
It is ferrous to add catalyst sulfuric acid respectively in first oxidation zone and last step oxidation zone in the said step 3), and wherein in the end the stair oxidation district ferrous sulfate mass ratio that adds weight ratio is 25% of total add-on.
Adding alkali in the said step 4) is industrial sodium hydroxide or calcium hydroxide.
It is SEPIGEL 305 polymer coagulant aids that said step 5) adds coagulant aids at coagulation basin.
The present invention is different with traditional biochemistry or chemical method, know-why of the present invention with the Fenton advanced oxidation processes as core.Its cardinal principle is in the tart environment, uses ydrogen peroxide 50 to be oxygenant, under the effect of certain catalyzer, produces OH and does not have the oxidizing reaction of selection with organism in the water, reaches the purpose of degradation of organic substances.
Technology of the present invention mainly is divided into four parts: the one, by the regulatory region that equalizing tank constitutes, the water quantity and quality reaction environment is regulated; The 2nd, be the main reaction part of technology in the oxidation zone that constitutes by oxidation pond; The 3rd, the aeration zone that constitutes in the aeration tank becomes ferric iron with oxidation of divalent excessive in the water, forms ferric hydroxide precipitate, and the 4th, in coagulation that constitutes by the coagulation separation cell and separation (filtration, deposition or air supporting) district, carry out mud-water separation.Concrete technology thinking is: middle water or little pollution organic sewage of sewage work are introduced regulatory region; At first carry out acid-alkali accommodation, with pH transfer to follow-up oxidizing reaction just when, add oxygenant then, catalyzer carries out oxidizing reaction; Most organism in this link water are oxidized to carbonic acid gas and water; Few part is decomposed into small organic molecule, after water is imported disengaging zone (filtration, deposition or air flotation pool can be selected according to flocs unit characteristic and reuse requirement); Add coagulant aids with mud-water separation, accomplish treating processes.
Organic content is very low in the clarification and effluent that little pollution organic sewage of taking the inventive method to handle obtains, and organic concentration can be removed to common cities and towns tap water level, can satisfy the requirement of water unit's subsequent production technology.And can regulate control arbitrarily to outlet water organic substance concentration through the add-on of adjustment medicament, reduce under certain condition and handle working cost.
The present invention compared with prior art has following characteristics:
1, the art breading ability is strong, and organic removal rate is very high, can be with representing micro-content organism content permanganate index to be controlled at below the 2mg/L in the water, and this is that general technology is difficult to reach.
2, can add dose through adjustment the big water that comes of concentration difference is obtained same effluent quality, also can regulate effluent quality, reduce unnecessary working cost according to specific requirement.
3, equipment configuration is simple in structure, and is reliable, and the plant area area is little.
4, this technology can be carried out the organic assembling application with other treatment process, as pretreatment unit or post-processing unit, uses flexibly, and integrated degree is high.
5, do not exist system to start problem, but intermittent operation.
Description of drawings
Fig. 1 is apparatus of the present invention structural representation.
Fig. 2 is a process flow diagram of the present invention.
Among the figure: 1, water intaking valve; 2, under meter; 3, equalizing tank; 4, oxidation pond; 5, aeration tank; 6, coagulation separation cell (air supporting, deposition or filtration); 7, acid adds jar; 8, oxygenant adds jar; 9, catalyzer adds jar; 10, alkali adds jar; 11, coagulant aids adds jar; 12, outlet valve; 13, go out water pump; 14, sludge pump; 15, mud valve; 16, aerator.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is further specified.
As shown in Figure 1; Be the little pollution organic sewage of the present invention advanced treatment apparatus structural representation; This device comprises equalizing tank 3, oxidation pond 4, aeration tank 5 and the coagulation separation cell 6 that is communicated with successively, and equalizing tank 3 upper portion side wall are provided with water intaking valve 1, and the top is communicated with acid and adds jar 7; Said oxidation pond 4 tops are communicated with oxygenant respectively and add jars 8 and add jars 9 with catalyzer; 5 tops, said aeration tank are communicated with alkali and add jar 10; Said coagulation separation cell 6 tops are communicated with coagulant aids respectively and add jar 11 and go out water pump 13, and coagulation separation cell 6 lower sides are communicated with sludge pump 14.
In the present embodiment, acid adds jars 7 and adds pump through acid and be communicated with equalizing tank 3, is provided with the equalizing tank whisking appliance in the equalizing tank 3, is provided with blow-off valve bottom the body of pond.
In the present embodiment, oxidation pond 4 is divided into three pond bodies, and catalyzer adds jars 9 and is communicated with two catalyzer respectively and adds pump and be communicated with the first step and last step oxidation pond pond body, and oxygenant adds jar 8 and adds pump through oxygenant and be communicated with the first oxidation pond body; Be respectively equipped with the equalizing tank whisking appliance in 4 three pond bodies of oxidation pond, body bottom in pond is provided with blow-off valve.
In the present embodiment, alkali adds jars 10 and adds pump through alkali and be communicated with aeration tank 5, is provided with aerator 16 bottom the 5 pond bodies of aeration tank.
In the present embodiment, coagulation separation cell 6 is divided into two pond bodies, is respectively coagulation basin and separation cell, and coagulant aids adds jars 11 and adds pump through coagulant aids and be communicated with coagulation basin, is provided with the equalizing tank whisking appliance in the coagulation basin, is provided with blow-off valve bottom the body of pond.
In the present embodiment, the separation cell top is communicated with out water pump 13 through outlet valve 12, and lower sides is communicated with sludge pump 14; Sludge pump 14 exits are communicated with mud valve 15; The bottom is provided with blow-off valve.
Among the present invention; The acid that on the pond body that comprises equalizing tank 3, oxidation pond 4, aeration tank 5 and coagulation separation cell 6, is communicated with respectively adds jars 7, oxygenant adds jars 8, catalyzer adds jars 9, alkali add jars 10 and coagulant aids to add jars 11 be a cover medicine system, for system adds acid, oxygenant, catalyzer, alkali and coagulant aids.
The present invention gives little pollution organic sewage deep treatment method, and this method comprises the steps:
1) the middle water or the micro-polluted water that Sewage treatment systems are produced enter equalizing tank 3, and wherein, middle water or micro-polluted water COD value are at 40-60mg/L;
2) in equalizing tank 3, adding mass ratio is sulfuric acid or the hydrochloric acid of 1～6mmol/L, regulates pH to 2.5～3;
3) will be through step 2) middle water or micro-polluted water input oxidation pond 4 after the s.t., oxidation pond 4 is made up of at least three parts, and every part is made up of one or more placed in-line subregion; Add ydrogen peroxide 50 in first oxidation zone; The adding concentration of pure ydrogen peroxide 50 is 1～4: 1 with the ratio of water inlet COD value; It is ferrous to add catalyst sulfuric acid respectively in first oxidation zone and the 3rd oxidation zone; Wherein the 3rd oxidation zone adds excessive ferrous sulfate, and the ferrous sulfate mass ratio that total add-on is a weight ratio is 25% of total add-on; The total add-on of oxidation zone is that the catalyst sulfuric acid of mass concentration 0.5～3.0mmol/L is ferrous; Oxidation zone is used air or mechanical stirring 20～120min;
4) with the reactant input aeration tank 5 of step 3), add alkali (industrial sodium hydroxide or calcium hydroxide) and regulate pH to 7～7.5; Aeration zone 5 is provided with aerating apparatus, and purpose is that excessive ferrous sulfate is oxidizing to ferric sulfate, guarantees that organic concentration drops to lower in the water;
5) the step 4) reactant is placed coagulation separation cell 6, coagulation separation cell 6 is divided into coagulation basin and separation cell, adds coagulant aids at coagulation basin, forms the bigger flco of volume with suspended substance, colloid in the reactant; To add coagulant aids be SEPIGEL 305 polymer coagulant aids.
6) will place separation cell than big flocculating body through what coagulation basin formed, and adopt deposition, air supporting, filtering separation method to carry out separating of water and flco;
7) with the isolating flco of step 6) through sludge pump 14 spoil disposals, water outlet after the separation gets into reclaiming system, promptly accomplishes the working cycle of a little pollution organic sewage advanced treatment.
Through table 1 used technical parameter range of choice in the inventive method is tabulated below.
The parameter area of the used technical measures of table 2 the present invention
Above-mentioned steps 2) in, oxidation pond 4 is not limited only to be divided into three, can also be divided into 3-10 pond body.Catalyzer adds jars 9 and adds pump through two catalyzer and be communicated with first oxidation pond and last step oxidation pond pond body respectively, and oxygenant adds jar 8 and adds pump through oxygenant and be communicated with the first oxidation pond pond body; Be respectively equipped with the equalizing tank whisking appliance in the 3-10 of oxidation pond 4 the pond body, body bottom in pond is provided with blow-off valve.
Each several part principle of work of the present invention is seen shown in Figure 2.
Regulatory region (equalizing tank zone): water inlet is generally neutrality, for satisfying the required sour environment of follow-up advanced oxidation, through adding sulfuric acid or hydrochloric acid, will intake about pH regulator to 2.5～3.
Oxidation zone (oxidation pond zone): come the organic pollutant in the water inlet is carried out oxygenolysis through adding Fenton reagent (oxygenant is a ydrogen peroxide 50, and catalyzer is a ferrous sulfate).Fenton reagent can produce the extremely strong hydroxyl radical free radical of oxidisability, can make most organism complete oxidation generation water and carbonic acid gas in the water, and the small portion oxidation operation is to be simple and easy to biochemical small organic molecule, thereby reaches the purpose that reduces COD.Key of the present invention is to adopt effective ways that oxygenant residual in the water (ydrogen peroxide 50) is removed, and makes the COD value drop to very low numerical range.In the oxidation zone final stage, add alkali (sodium hydroxide, calcium hydroxide) the pH value is transferred to neutrality.
Coagulation disengaging zone (coagulation separation cell zone): in the water of peroxidation, contain part small organic molecule and some iron mud.Add flocculation agent and coagulant aids in the coagulation district, make the tiny solid that forms in the water behind the stirring reaction, from water, separate through deposition, filtration or air supporting.Effluent quality improves.
Concrete operations step of the present invention is: specifically open total water intaking valve 1, observe total flooding velocity under meter 2, through the sour start and stop that add pump of on-line monitoring instrument control, after water quality met the requirements of the pH value, water got into oxidation pond 4 through pipe-line transportation according to former water pH.The unlatching oxygenant adds pump and catalyzer adds pump, adds medicament to oxidation pond 4, opens the oxidation pond whisking appliance simultaneously, promotes reaction to carry out.After reaction was accomplished, middle water flowed into aeration tank 5, opened alkali and added pump, and water body pH is adjusted back to neutral.Flow into coagulation separation cell 6 again, open coagulant aids and add pump, under the effect of coagulant aids, make that the subtitle substance flocculation can settled flco for big volume in the water.Then water is carried out mud, water sepn through deposition, filtration or air supporting.Open outlet valve 12 and go out water pump 13, water outlet is delivered to made land used.If mud reaches a certain amount of in the separation cell, open mud valve 15 and sludge pump 14, then can realize spoil disposal.When clearing up, open emptying valve, Chi Zhongshui is emptied in maintenance with to device.
The above; Only be the embodiment that the present invention is directed to the inventive method; The foregoing description is not that the present invention is done any restriction; Every according to the present invention the given scope of technical scheme and any simple modification, change and equivalent structure that above embodiment did changed, all still belong to the protection domain of technical scheme of the present invention.
Claims (10)
1. little pollution organic sewage advanced treatment apparatus; It is characterized in that; Comprise successively the equalizing tank (3), oxidation pond (4), aeration tank (5) and the coagulation separation cell (6) that are communicated with, said equalizing tank (3) upper portion side wall is provided with water intaking valve (1), and equalizing tank (3) also is communicated with acid and adds jar (7); Said oxidation pond (4) is communicated with oxygenant respectively and adds jar (8) and add jar (9) with catalyzer; Said aeration tank (5) is communicated with alkali and adds jar (10); Said coagulation separation cell (6) is communicated with coagulant aids respectively and adds jar (11) and go out water pump (13), and coagulation separation cell (6) lower sides is communicated with sludge pump (14).
2. a kind of little pollution organic sewage advanced treatment apparatus according to claim 1 is characterized in that, said acid adds jar (7) and adds pump through acid and be communicated with equalizing tank (3), and equalizing tank is provided with the equalizing tank whisking appliance in (3), is provided with blow-off valve bottom the body of pond.
3. a kind of little pollution organic sewage advanced treatment apparatus according to claim 1; It is characterized in that; Said oxidation pond (4) is divided into 3-10 pond body; Catalyzer adds jar (9) and adds pump through two catalyzer and be communicated with first oxidation pond and last step oxidation pond pond body respectively, and oxygenant adds jar (8) and adds pump through oxygenant and be communicated with the first oxidation pond pond body; Be respectively equipped with the equalizing tank whisking appliance in 3-10 pond body of said oxidation pond (4), body bottom in pond is provided with blow-off valve.
4. a kind of little pollution organic sewage advanced treatment apparatus according to claim 1 is characterized in that, said alkali adds jar (10) and adds pump through alkali and be communicated with aeration tank (5), is provided with aerator (16) bottom the body of pond, aeration tank (5).
5. a kind of little pollution organic sewage advanced treatment apparatus according to claim 1; It is characterized in that; Said coagulation separation cell (6) is divided into two pond bodies, is respectively coagulation basin and separation cell, and coagulant aids adds jar (11) and adds pump through coagulant aids and be communicated with coagulation basin; Be provided with the equalizing tank whisking appliance in the coagulation basin, body bottom in pond is provided with blow-off valve.
6. a kind of little pollution organic sewage advanced treatment apparatus according to claim 5 is characterized in that said separation cell top is communicated with out water pump (13), and lower sides is communicated with sludge pump (14); The bottom is provided with blow-off valve.
7. little pollution organic sewage deep treatment method, it is characterized in that: this method comprises the steps:
1) the middle water or the micro-polluted water that Sewage treatment systems are produced enter equalizing tank (3), and wherein, middle water or micro-polluted water COD value are at 40-60mg/L;
2) in equalizing tank (3), adding mass ratio is sulfuric acid or the hydrochloric acid of 1～6mmol/L, regulates pH to 2.5～3;
3) will be through step 2) middle water or micro-polluted water input oxidation pond (4) after the s.t., oxidation pond (4) is made up of at least three parts, and every part is made up of one or more placed in-line subregion; Add pure ydrogen peroxide 50 in first oxidation zone; The ratio of the little pollution water inlet COD value after the adding concentration of pure ydrogen peroxide 50 and the s.t. is 1～4: 1; It is ferrous to add catalyst sulfuric acid respectively in first oxidation zone and last step oxidation zone; Wherein the last step oxidation zone adds excessive ferrous sulfate, and total add-on is the ferrous sulfate of mass concentration 0.5～3.0mmol/L; Oxidation zone is used air or mechanical stirring 20～120min;
4) with the reactant input aeration tank (5) of step 3), add alkali and regulate pH to 7～7.5;
5) the step 4) reactant is placed coagulation separation cell (6), coagulation separation cell (6) is divided into coagulation basin and separation cell, adds coagulant aids at coagulation basin, forms flco with suspended substance, colloid in the reactant;
6) will place separation cell through the flco that coagulation basin forms, and adopt deposition, air supporting or filtering separation method to carry out separating of water and flco;
7) with the isolating flco of step 6) through sludge pump (14) spoil disposal, water outlet after the separation gets into reclaiming system, promptly accomplishes the working cycle of a little pollution organic sewage advanced treatment.
8. want 7 described a kind of little pollution organic sewage deep treatment methods according to right; It is characterized in that: it is ferrous to add catalyst sulfuric acid respectively in first oxidation zone and last step oxidation zone in the said step 3), and wherein in the end to add the ferrous sulfate mass ratio be 25% of total add-on in the stair oxidation district.
9. a kind of little pollution idol note advanced treatment method for sewage water according to claim 7, it is characterized in that: adding alkali in the said step 4) is industrial sodium hydroxide or calcium hydroxide.
10. a kind of little pollution organic sewage deep treatment method according to claim 7 is characterized in that: it is SEPIGEL 305 that said step 5) adds coagulant aids at coagulation basin.
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| CN105254072A (en) * | 2015-11-05 | 2016-01-20 | 无锡市新都环保科技有限公司 | Sewage and wastewater treatment device and method |
| CN106348494A (en) * | 2016-11-08 | 2017-01-25 | 英普（北京）环境科技有限公司 | Fenton integrated sewage treatment device and method |
| CN108911285A (en) * | 2018-06-13 | 2018-11-30 | 龚璐 | A kind of river sewage quick treatment device and method |
| CN109553249A (en) * | 2018-12-31 | 2019-04-02 | 合肥高科科技股份有限公司 | A kind of sewage plant operating process |
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| CN101041475A (en) * | 2007-03-09 | 2007-09-26 | 华南理工大学 | Fenton and air-float integral water treating method |
| CN101570368A (en) * | 2008-04-29 | 2009-11-04 | 中国石油化工股份有限公司 | Method for processing waste water by fenton oxidation |
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| CN105254072A (en) * | 2015-11-05 | 2016-01-20 | 无锡市新都环保科技有限公司 | Sewage and wastewater treatment device and method |
| CN106348494A (en) * | 2016-11-08 | 2017-01-25 | 英普（北京）环境科技有限公司 | Fenton integrated sewage treatment device and method |
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| CN109553249A (en) * | 2018-12-31 | 2019-04-02 | 合肥高科科技股份有限公司 | A kind of sewage plant operating process |
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| CN102390905B (en) | 2013-05-01 |
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