CN101767906B - Complete-reclaiming process of down wastewater - Google Patents
Complete-reclaiming process of down wastewater Download PDFInfo
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- CN101767906B CN101767906B CN 200910305767 CN200910305767A CN101767906B CN 101767906 B CN101767906 B CN 101767906B CN 200910305767 CN200910305767 CN 200910305767 CN 200910305767 A CN200910305767 A CN 200910305767A CN 101767906 B CN101767906 B CN 101767906B
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Abstract
The invention discloses a complete-reclaiming process of down wastewater and a special feather fishing machine without driving force. A grit basin, a balance tank, a floatation tank, a biological contact oxidation tank, a secondary sedimentation tank, a clarifying basin, a no-value sand filter, a disinfection tank, a sludge thickening tank, a feather fishing machine without driving force specially used for reclaiming process, and the like are adopted to process wastewater. The complete-reclaiming process has low processing cost and good processing effect and realizes zero emission and down reclaiming.
Description
Technical field
The present invention relates to a kind of sewage treatment process, relate in particular to a kind of eider down waste water treatment process and specific equipment that contains high-enriched organics.
Background technology
To eider down washing processing, at first in being housed, the rinsing machine of eider down injects cleaning water, add washing composition simultaneously, hydrogen peroxide carries out first time and washes, washing finishes and water is put dried, and then injects clear water, repeats aforesaid operations, generally to slightly wash 10 fine purifiations through 5 times.Because slightly the process of washing has added washing composition and reodorant, discharge water pollution concentration height, CODcr belong to high concentrated organic wastewater up to 1000～2500mg/L, the fine purifiation water then water yield is big, relative concentration is lower, and CODcr is 200～500mg/L, is the conserve water resource, China's eider down industry has quite a few enterprise to adopt to handle thick wash water at present, reclaim the method for fine purifiation water, promptly only thick wash water is handled, and qualified discharge; And after fine purifiation water made precipitation process slightly, recycle and make thick wash water, superfluous water is done plant area's greening water and land for building, workshop wash-down water.So realize the partially recycled target of utilizing of water resources.
By the method for handling thick wash water, recovery fine purifiation water, reduce relatively though handle the water yield, the civil engineering facility investment is low relatively, and shortcoming is: 1. thick wash water pollution concentration is higher, and intractability increases; 2. fine purifiation water B/C is more relatively low than again, unfavorable biochemical treatment; Even 3. unnecessary 50% water yield part of fine purifiation water is used for afforesting or sanitary flush water, also have quite a few all to emit, so still cause certain water to pollute and water resource waste; 4. also must replenish quite a large amount of water every day, do fine purifiation water, for the big factory of tool certain scale, every day several kilotons make up water, also considerable; 5. remove contamination shunting difficulty of enterprise, large-lot producer especially, several production line beats controls can not be unified, and cause the investment of managerial difficulty and water discharge line to increase.
In a word, eider down already is a high water consumption industry, with present China eider down industry production level, one ton of eider down of every processing is with 200～400 tons of water consumptions, like this, the annual only water consumption of eider down industry just reaches up to ten million tons, and the waste water that produces contains a large amount of pollution substances, if directly discharge, will pollute environment.If these waste water can be handled and recycles fully in production, not only solved pollution problem, also saved great amount of water resources, have social effect, considerable economic is arranged again.
But, for realizing recycling fully, must solve following difficult point problem on the technology:
1) SS content height, and be atomic tiny eider down bits, conventional method of wastewater treatment is difficult to be removed;
2) effluent quality requires height, except that satisfying general reuse water standard, transparency is had relatively high expectations, and needs greater than 800mm;
3) eider down industry production seasonality is stronger, and the whole year production dull and rush season is obvious, puts into high gear the impact that this moment, treatment system must be born the big yield high loading when produce the busy season summer; When producing dull season, the water yield reduces, and sludge loading reduces, and microorganism growth speed is slack-off, will cause the biosystem operation undesired;
4) only replenish the fresh water of minute quantity or not additional every day, after system's water outlet recycles for a long time, still as clear as crystal, free from extraneous odour;
5) recycle-water comes back in the production and uses, and water outlet each time all requires reliable and stable, even in water quality mutation or winter severe cold season, all emergent technology will be arranged, to keep normal water outlet, guarantees quality product.
Summary of the invention
The object of the present invention is to provide a kind of eider down waste water complete-reclaiming process, the water that is come out after this art breading can be used for producing fully, has saved water resources.
Another object of the present invention is that a kind of no motivating force that is specifically designed to the eider down waste water treatment process of exploitation is dragged for a mao machine, has both helped wastewater treatment, and recyclable again eider down saves production cost.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals:
Eider down waste water complete-reclaiming process
It is characterized in that flow process is as follows:
Waste water at first enters
(1) settling pit is removed bigger granule foreign in the waste water; Rise to by pump then
(2) drag for a mao machine, separate above suspension of 0.2mm or half suspended solid material, remove eider down class material bigger in the waste water and also recycle, both can alleviate the subsequent disposal load, bring considerable economy return to the owner again; Pump disposes with dragging for mao machine at 1: 1, can come the unlatching platform number of control pump according to the open strip number (being wastewater flow rate) of production line; Waste water after filtering enters
(3) equalizing tank is used to regulate water quality and quantity, and described equalizing tank is separated into several ponds, is furnished with the independently aerating system that comprises gas blower, thick bubble aeration dish in each pond, carries out preaeration, fully the homogenizing water quality and quantity; The water that is come out by equalizing tank enters
(4) air flotation pool is removed the impurity such as a large amount of tiny feathers that dissolve and suspend in the waste water by inflation; Jet flow device, slag scraper, sludge pump are installed in the pond; The water that is come out by air flotation pool enters
(5) biological contact oxidation pond can be separated into several ponds on the described biological contact oxidation pond, and gimp formula filler is arranged in the pond, is covered with microbial film on the filler, and mud discharging device is equipped with in the bottom, by the most of pollutent in the metabolism removal waste water of microorganism; Determine operation pond number according to the open strip number (being wastewater flow rate) of production line; The water of being handled by biological contact oxidation pond enters
(6) second pond is removed the microbial film and other impurity that come off in the biological contact oxidation pond, and mud enters sludge thickener; The water that comes out from second pond enters
(7) settling pond is further removed suspended substance in the water, and looks water quality condition and determine whether to add medicaments such as coagulating agent; The water that is come out by settling pond enters,
(8) valveless sand filter, described valveless sand filter is in operational process, it is constant that the water outlet water level keeps, the water inlet water level then increases with the head loss of filtering layer and rises in siphon pipe, when water level rises to siphon pipe pipe top, and when forming siphon, promptly beginning the filtering layer back flushing automatically, back flushing spoil disposal water is outside siphon pipe is discharged the pond; The water that is come out by the valveless sand filter enters
(9) sterilization pool, bacterium germ in the waste water, virus etc. are killed in disinfection, make waste water quality meet the requirement of enterprise's water of productive use standard;
(10) sludge thickener, the mud that each pond produced, scum silica frost, enter (10) sludge thickener by spoil disposal in the pond or dreg removing system.
The no motivating force that is specifically designed to the eider down waste water treatment process is dragged for a mao machine
Has frame, be installed on the diversion box of upper rack, be inclined in the sieve groove on the frame, be installed in the header tank and the slag bucket of sieve groove lower end, it is characterized in that: the back of described diversion box is provided with the waste water import, internal fixation have with diversion box be separated into before and after two-part water eliminator, described water eliminator is higher than the waste water import, water-distributing nozzle is arranged at the bottom, and groove is suitable for reading links to each other with sieve for water-distributing nozzle; Described sieve groove comprises cell body and the horizontal built-up type sieve plate wherein that cross section takes the shape of the letter U.
As preferably, described built-up type sieve plate is to be laterally rectangular rearranging of trapezoid by the row's section that is held on groove face.
As preferably, the slit between the described sieve plate be 0.2mm and more than.
Beneficial effect of the present invention is
1. at the characteristic of SS content height in the waste water, this process using sand setting, drag for equipment and technology such as a mao machine, air supporting, effectively removed suspended substances such as the silt in the waste water, soft flocks, alleviate the subsequent disposal load;
2. adopt no motivating force to drag for a mao machine, remove the eider down in the waste water, and recycle eider down;
3. the technical process among the present invention (1), (2), (3), (5) treatment system can be regulated according to wastewater flow rate, both can impact by anti-high loading, also can intermittently rotate operation when underload, and with economize on electricity joint consumption, and the assurance biosystem is normally moved;
4. this technical process (5), biomass is higher in the contact-oxidation pool, and capacity of resisting impact load is strong, the drastic change of water quality and quantity is had stronger adaptive faculty, even also can keep treatment effect preferably under the condition of geneva motion; And sludge age is long, can keep somewhere higher sludge concentration, reduces biological load, improves clearance, causes microorganism growth slowly also can guarantee water outlet even winter temperature reduces;
5. technical process (7) can be used as emergent operation, still can guarantee quality of reused water by add medicament in settling pond when production technique or waste water quality sudden change;
6. technical process (1), (2), (4) are strengthened pre-treatment and are removed suspended substance, follow-uply further remove suspended substance with flow process (7), (8) again, have improved greatly water clarity, have guaranteed that water outlet is as clear as crystal;
7. technical process (9), to the water outlet disinfection, killing pathogenic bacteria etc. guarantee the water of productive use hygiene, after especially system's water outlet recycles for a long time, still can as clear as crystal, free from extraneous odour;
8. the mud that technical process (10) produces because of this mud is nontoxic, can be used as fertilizer.
The present invention has the following advantages:
This art breading goes out clarification of water, and water conditioning can be used in production fully, saves great lot of water resources, and economic benefit is considerable;
This art breading water outlet is through recycling for a long time, and is still as clear as crystal, free from extraneous odour;
The eider down that this technological process is fished for can be recycled, and economic benefit is considerable;
This technology running cost is low, and whole flow process can not dosing or few dosing, and can come the regulation system operation according to wastewater flow rate, with economize on electricity.
Description of drawings
Accompanying drawing 1 is a kind of wastewater treatment of the present invention and complete-reclaiming process schema.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment:
6000 tons of certain large-scale down products factory day waste discharges, the influent quality index:
Treatment process adopts flow process as shown in Figure 1:
1) other waste water such as the washing water of every production line, drying water are introduced settling pit, precipitated mud and sand by the open drain hidden pipe;
2) settling pit water promotes through pump, by after dragging for a mao machine and fishing for fine suspension such as eider down sheet, enters equalizing tank;
3) in equalizing tank, carry out preaeration, with abundant homogenizing water quality and quantity;
4) equalizing tank water outlet gravity flow enters air flotation pool, to remove a large amount of small suspended substance in the waste water, to alleviate the load of postorder biochemical treatment;
5) air flotation pool water outlet gravity flow enters biological contact oxidation pond, and biological contact oxidation pond is a main process, carries out aerobic biochemical therein and handles, and removes majority of organic pollutants by self metabolism of microorganism, to reach the purpose that purifies water;
6) biological contact oxidation pond water outlet gravity flow enters second pond, the microbial film that the precipitation removal comes off and a large amount of biological sludges;
7) the second pond water outlet is forced into settling pond through force (forcing) pump, adds the inferior aluminium of a spot of sulfuric acid according to actual waste water water quality and waste water processing station running condition, reaches the requirement of enterprise's water of productive use to guarantee water outlet;
8) settling pond water outlet gravity flow enters gravity valveless filter, removes residual fine particle impurity in the waste water, to improve the transparency of water outlet;
9) to enter reuse pool after ultraviolet lamp sterilization stand-by in the valveless filtering pool water outlet;
10) mud that produces from settling pit, air flotation pool, second pond, settling pond and valveless sand filter is collected into sludge thickener by sludge pipe, becomes the mud cake outward transport after the pressure filter dehydration.
Since the self-starting of this project project, operating performance is reliable and stable, and effluent quality is good, and effluent quality is: CODcr≤50mg/L, and BOD5≤10mg/L, SS≤30mg/L, pH 6～9, and transparency 〉=1000mm satisfies enterprise's reuse water requirement.
The project main economic and technical indices
Annotate: this enterprise's original production water is taken from river water cleaning water, and water resources taxes and water purification cost are 0.25 yuan/ton.Drag for a mao machine and comprise frame, be installed on the diversion box of upper rack, be 40 and spend the sieve groove that is inclined on the frame, the header tank and the slag bucket that place the sieve groove to go to the bottom.The diversion box rear side is provided with the waste water import, and internal fixation has water eliminator, and water eliminator is higher than the waste water import, and diversion box is separated into front and back two portions, and water-distributing nozzle is arranged at the diversion box bottom, and water-distributing nozzle directly is connected with the sieve groove.The sieve groove is made up of cell body and sieve plate, and cell body is the U font, wherein shelves sieve plate.Sieve plate is to be laterally rectangular rearranging of trapezoid by row's section, between each trapezoidal between apart from be 0.2mm, be exactly the slit of downward draining.
During work, waste water enters from the waste water import, two portions before and after water eliminator is separated into diversion box, waste water is after the diversion box rear portion runs up to certain altitude, and water eliminator is crossed in overflow, be covered with the sieve plate transverse section equably from the water-distributing nozzle outflow, descend along the slip-stream of sieve plate inclined-plane then, in process of flowing, sieve plate is trapped in the sieve plate surface with solid substance, waste water flows out from sieve plate grid seam, realizes solid-liquid separation.Tilting sieve groove lower end links to each other with header tank, collects from the isolated waste water of sieve plate, and header tank has a water port, constantly water is discharged.Be trapped in the solid substance on sieve plate surface, under the action of gravity of the scouring force of pending current and solid substance self, glide gradually, drop down onto in the slag bucket at last.
The invention solves existing solid-liquid separating equipment can't isolating trickle suspended substance as the eider down class, use this utility model and can from eider down waste water, fish for eider down, and recycling eider down, waste water load after the separation reduces, help further doing environmental protection treatment, separate but also can be applicable to the other industry waste water solid.
Claims (1)
1. eider down waste water complete-reclaiming process is characterized in that flow process is as follows:
Waste water at first enters
(1) settling pit is removed bigger granule foreign in the waste water; Rise to by pump then
(2) drag for a mao machine, separate above suspension of 0.2mm or half suspended solid material; Waste water after filtering enters
(3) equalizing tank, described equalizing tank is separated into several ponds, is furnished with independently aerating system in each pond, carries out preaeration, fully the homogenizing water quality and quantity; The water that is come out by equalizing tank enters
(4) air flotation pool, described air flotation pool is provided with some jet flow devices, by the jet flow inflation, removes a large amount of tiny feather impurity that dissolves and suspend in the waste water; The water that is come out by air flotation pool enters
(5) biological contact oxidation pond has gimp formula filler in the described biological contact oxidation pond, be covered with microbial film on the filler, by the most of pollutent in the metabolism removal waste water of microorganism; The water of being handled by biological contact oxidation pond enters
(6) second pond is removed the microbial film and other impurity that come off in the biological contact oxidation pond; The bottom sludge part passes back into (5) biological contact oxidation pond; The water that comes out from second pond enters
(7) settling pond is further removed suspended substance in the water; The water that is come out by settling pond enters
(8) valveless sand filter, described valveless sand filter is in operational process, it is constant that the water outlet water level keeps, the water inlet water level then increases with the head loss of filtering layer and rises in siphon pipe, when water level rises to siphon pipe pipe top, and when forming siphon, promptly beginning the filtering layer back flushing automatically, back flushing spoil disposal water is outside siphon pipe is discharged the pond; The water that is come out by the valveless sand filter enters
(9) sterilization pool makes waste water quality meet the requirement of enterprise's water of productive use standard;
(10) sludge thickener, the mud that above-mentioned each pond produced, scum silica frost, enter (10) sludge thickener by spoil disposal in the pond or dreg removing system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910305767 CN101767906B (en) | 2009-08-19 | 2009-08-19 | Complete-reclaiming process of down wastewater |
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| CN 200910305767 CN101767906B (en) | 2009-08-19 | 2009-08-19 | Complete-reclaiming process of down wastewater |
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| CN101767906A CN101767906A (en) | 2010-07-07 |
| CN101767906B true CN101767906B (en) | 2011-07-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104030489B (en) * | 2014-06-14 | 2016-08-17 | 天伟化工有限公司 | The processing method of flushing water in PVC paste resin production |
| CN105293602A (en) * | 2015-11-20 | 2016-02-03 | 无锡山川环保机械有限公司 | Hair slipping component of cylindrical hydraulic hair fishing machine |
| CN109264922A (en) * | 2017-07-17 | 2019-01-25 | 江苏商达水务有限公司 | A kind of device and method of natural feather waste water recycling device |
| CN108793640A (en) * | 2018-07-26 | 2018-11-13 | 江苏开放大学（江苏城市职业学院） | A kind of Feather and down industry wastewater treatment equipment and its application |
| CN109942034B (en) * | 2019-02-13 | 2021-09-07 | 临沂沂和羽绒制品有限公司 | Down feather sewage separator capable of preventing down feather from being dispersed and convenient to collect |
| CN113185053A (en) * | 2021-04-09 | 2021-07-30 | 浙江省机电设计研究院有限公司 | Treatment process for down feather washing wastewater |
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