CN208594092U - A kind of sewage disposal system of low sludge yield - Google Patents
A kind of sewage disposal system of low sludge yield Download PDFInfo
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- CN208594092U CN208594092U CN201821130419.9U CN201821130419U CN208594092U CN 208594092 U CN208594092 U CN 208594092U CN 201821130419 U CN201821130419 U CN 201821130419U CN 208594092 U CN208594092 U CN 208594092U
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Abstract
The utility model discloses a kind of sewage disposal systems of low sludge yield, belong to technical field of waste water processing, the system includes sequentially connected water quality adjustment pond, mixing and absorption pond, primary sedimentation tank, anaerobic hydrolysis acidification tank, aerobic biochemical pool, reflux sedimentation tank and clear water reserviors, the mixing and absorption pond connects the promising mixing and absorption pond by sludge pipe and provides the sludge digestion tank of digested sludge, the primary sedimentation tank, the bottom of anaerobic hydrolysis acidification tank and reflux sedimentation tank passes through sludge pipe and connect with the sludge digestion tank, mud return line is equipped between the aerobic biochemical pool and the reflux sedimentation tank.A small amount of sludge that sewage disposal system is generated, after Normal Temperature Anaerobic Digestion, it follows bad into sewage disposal system, utilize the adsorptivity of digested sludge, flocculant is substituted, and realizes sludge self-digestion within the system, considerably reduces sludge yield, it is basic to realize without argillization sewage treatment, sewage treatment field can be widely applied to.
Description
Technical field
The utility model relates to technical field of waste water processing, and in particular to a kind of sewage disposal system of low sludge yield.
Background technique
It is past currently to sanitary sewage, textile printing and dyeing sewage, food processing, the processing of slaughter technics and some trade effluents
Toward the pretreating process for carrying out flocculation sedimentation using addition flocculant before biochemical treatment, this technique is inevitably generated largely
Sludge.If sludge cannot get appropriate processing, directly outward transport, direct agricultural or nonstandard landfill, pollutant may
Secondary pollution is caused into soil, surface water body and ground water regime, these sludge are piled up arbitrarily and not only break up environment, distribute
The life and health of gas, the odor impact mankind, while also increasing the cost of sludge subsequent processing.Therefore, how to subtract
The generation of sludge in few sewage disposal process, it has also become the research objective and countries in the world facing of environmentally friendly scientific and technical personnel
Environmental problem.
Utility model content
In view of the above technical problems, the utility model provides a kind of sewage disposal system of low sludge yield, makes at sewage
A small amount of sludge that reason system generates follows after Normal Temperature Anaerobic Digestion and badly enters sewage disposal system, utilize the absorption of digested sludge
Property, flocculant is substituted, and realize sludge self-digestion within the system, considerably reduces sludge yield, realize substantially
No argillization sewage treatment (the extra sludge that need to finally discharge is very little compared with traditional handicraft, can be neglected), at reduction
Cost is managed, sewage treatment field can be widely applied to.
To achieve the goals above, the technical solution adopted in the utility model is as follows:
A kind of sewage disposal system of low sludge yield, including it is sequentially connected water quality adjustment pond, mixing and absorption pond, just heavy
Pond, anaerobic hydrolysis acidification tank, aerobic biochemical pool, reflux sedimentation tank and clear water reserviors, the mixing and absorption pond are connected by sludge pipe
The promising mixing and absorption pond provides the sludge digestion tank of digested sludge, and the primary sedimentation tank, anaerobic hydrolysis acidification tank and reflux are heavy
The bottom in shallow lake pond passes through sludge pipe and connect with the sludge digestion tank, between the aerobic biochemical pool and the reflux sedimentation tank
Equipped with mud return line.
Preferably, the water quality adjustment pond is equipped with grid in the upstream end of sewage.
Preferably, it is equipped with aeration tube in the mixing and absorption pond and the aerobic biochemical pool, the aeration tube is connected with
Air blower.
Preferably, the aeration tube is uniformly distributed the bottom of pond for being set to the mixing and absorption pond and the aerobic biochemical pool.
Preferably, the mud return line is equipped with sludge pump.
Preferably, pH detector and temperature detector are equipped in the water quality adjustment pond and the sludge digestion tank.
The beneficial effects of the utility model are shown:
1. the utility model does not add chemical industry medicament, fully relies on microorganism and sewage is handled, i.e., it is dirty using digestion
The adsorptivity of mud, the various flocculants of substitution sewerage addition are overall to reduce 99% or more sludge yield, realize substantially
Without argillization, dosing cost and sludge subsequent processing expense are not only saved, labor intensity of workers is reduced, avoids remaining flocculation
Agent adverse effect caused by microorganism more avoids destruction of a large amount of sludge storages to environment；
2. digested sludge is imported mixing and absorption pond by the utility model, and is sufficiently mixed with sewage, digested sludge ensure that
To the adsorption-decomposition function of pollutant, makes mixing and absorption pond and primary sedimentation tank while being provided with the function of anaerobic hydrolysis acidification tank, reduce
The volume that anaerobic hydrolysis acidification tank should be built, saves occupied area and investment cost；
3. the sludge of system discharge is because containing a large amount of organic pollutants, after anaerobic digestion is decomposed, subtract the sludge of discharge
30-50% is measured, and eliminates sludge smell, while convert the substances such as ammonia nitrogen, phosphorus, is recycled into sewage disposal system
Afterwards, be better achieved microorganism to being absorbed and utilized of organic substance, ammonia nitrogen and phosphorus, decompose, reached dephosphorization, except ammonia nitrogen, go
The purpose of coloration, to improve effluent quality, making that treated, water is more as clear as crystal, the methane gas that this stage generates,
It collects and utilizes.
Detailed description of the invention
Fig. 1 is a kind of overall flow schematic diagram of the sewage disposal system of low sludge yield of the utility model.
Specific embodiment
In order to facilitate the understanding of those skilled in the art, the utility model will be further described below with reference to the accompanying drawings.
A kind of sewage disposal system of low sludge yield as shown in Figure 1, including sequentially connected water quality adjustment pond, mixing
Adsorption tank, primary sedimentation tank, anaerobic hydrolysis acidification tank, aerobic biochemical pool, reflux sedimentation tank and clear water reserviors, the mixing and absorption pond pass through
Sludge pipe connects the promising mixing and absorption pond and provides the sludge digestion tank of digested sludge, the primary sedimentation tank, anaerobic hydrolysis-acidification
Pond and the bottom of reflux sedimentation tank pass through sludge pipe and connect with the sludge digestion tank, the aerobic biochemical pool and the reflux
Mud return line is equipped between sedimentation basin.
The water quality adjustment pond is equipped with grid in the upstream end of sewage.In the mixing and absorption pond and the aerobic biochemical pool
It is equipped with aeration tube, the aeration tube is connected with air blower.The aeration tube be uniformly distributed be set to the mixing and absorption pond with
The bottom of pond of the aerobic biochemical pool.The mud return line is equipped with sludge pump.The water quality adjustment pond and the sludge digestion
PH detector and temperature detector are equipped in pond.
Using the sewage water treatment method of above system, comprising the following steps:
(1) sewage removes impurity through grid filtration first, subsequently into water quality adjustment pond, adjusts pH in water quality adjustment pond
After value and temperature, into mixing and absorption pond；
(2) digested sludge is imported into mixing and absorption pond, digested sludge is the sludge in sludge digestion tank in advance through detesting
Oxygen digestion gained, digested sludge is sufficiently mixed with sewage, the pollutant in digested sludge absorption effluent, and to some of the contaminants into
After row hydrolysis acidification, into primary sedimentation tank；
(3) it is separated by solid-liquid separation in primary sedimentation tank due to gravity, isolated sewage flows into anaerobic hydrolysis acidification tank, bottom
The sludge of sedimentation is discharged into sludge digestion tank；
(4) in anaerobic hydrolysis acidification tank, the organic matter of indissoluble or macromolecular is resolved into soluble small by anaerobe
Molecular substance, sewage enters aerobe pond later, and the sludge of bottom sedimentation is discharged into sludge digestion tank；
(5) sewage in aerobe pond, sufficiently eaten by aerobic microbiological by water pollutant, flows into reflux precipitating later
Pond；
(6) in reflux sedimentation tank, mixed liquor is separated by solid-liquid separation, and the clear water on top flows into clear water reserviors, the sludge of bottom precipitation
A part sends aerobe pond back to, and another part is discharged into sludge digestion tank；
(7) it is discharged into the sludge of sludge digestion tank in above steps, anaerobic digestion is carried out in sludge digestion tank, is made wherein
Organic material decomposition, conversion removal, be again introduced into mixing and absorption pond, recycle.
With the dyeing and printing sewage (1200-1600m of certain caused by spinning industrial production3/ d) for, specific embodiment is as follows:
(1) sewage is first through grid filtration removal cotton hair, yarn, the impurity such as polybag, subsequently into water quality adjustment pond,
Adjusting pH value in water quality adjustment pond with dilute sulfuric acid is 6.8-7.5, after being 20-37 DEG C by temperature control device adjusting temperature,
Into mixing and absorption pond；
(2) digested sludge is imported into mixing and absorption pond, digested sludge is the sludge in sludge digestion tank in advance through detesting
Oxygen digestion gained, is passed through gas into mixing and absorption pond by aeration tube, and digested sludge and sewage are sufficiently mixed under Gas Stirring
It closes, the pollutants such as organic matter, dyestuff in digested sludge absorption effluent, and after acidification is hydrolyzed to some of the contaminants, enters
Primary sedimentation tank；
(3) it is separated by solid-liquid separation in primary sedimentation tank due to gravity, isolated sewage flows into anaerobic hydrolysis acidification tank, bottom
The sludge of sedimentation is discharged into sludge digestion tank；
(4) in anaerobic hydrolysis acidification tank, insoluble organic matter is decomposed into water solubility by a large amount of hydrolytic bacterias, acidification bacterium
Organic matter converts the macromolecular substances of difficult for biological degradation to the small-molecule substance of easily biological-degradable, so as to improve sewage
Biodegradability provides guarantee for aerobic microbiological processing, and sewage enters aerobe pond later, and the sludge of bottom sedimentation is discharged into
Sludge digestion tank；
(5) sewage is in aerobe pond, aerobic microbiological under conditions of dissolved oxygen abundance, with organic pollutant,
The substances such as nitrogen, phosphorus are food, carry out own growth and breeding to make to purify the sewage and flow into reflux sedimentation tank later；
(6) in reflux sedimentation tank, the cotton-shaped micelle that aerobic microbiological and other solid suspensions are formed is in gravity
Under be separated from water, the clear water on top flows into clear water reserviors, and sludge a part of bottom precipitation sends aerobe pond, another part row back to
Enter sludge digestion tank；
(7) it is discharged into the sludge of sludge digestion tank in above steps, anaerobic digestion is carried out in sludge digestion tank, anaerobism disappears
The condition of change is 20-38 DEG C of temperature, pH 7, and pollutant and microorganism in sludge etc. are decomposed in sludge digestion tank, turn
Change, after being recycled into sewerage, becomes the food of anaerobic and aerobic microorganism, be again introduced into mixing and absorption pond, to reach
Sludge circulation and self is cleared up, realize sewage without argillization or few argillization processing.
Sewage treatment result: traditional handicraft is used, FeSO is added4After PAM flocculant flocculation sedimentation, then plus PAC and PAM into
Promoting the circulation of qi is floating, only this two processing unit, produces 20 tons of sludge or so (aqueous 75%), effluent qualities: COD 120-180mg/L, ammonia daily
Nitrogen 10-18mg/L, water outlet color is obvious, processing cost: 3 yuan/m3Left and right.
And after using this technique instead, nearly 2 years common property sludge less than 100 tons, (realize at without argillization sewage substantially by aqueous 75%)
Reason, effluent quality: COD < 50mg/L, ammonia nitrogen < 1mg/L, colour removal rate is high, and clarity is good, processing cost: 1 yuan/m3It is left
It is right.
Above content is only the structure example and explanation to the utility model, the technologies of affiliated the art
Personnel make various modifications or additions to the described embodiments or are substituted in a similar manner, without departing from
The structure of utility model or beyond the scope defined by this claim, all should belong to the protection range of the utility model.
Claims (6)
1. a kind of sewage disposal system of low sludge yield, which is characterized in that inhaled including sequentially connected water quality adjustment pond, mixing
Attached pond, primary sedimentation tank, anaerobic hydrolysis acidification tank, aerobic biochemical pool, reflux sedimentation tank and clear water reserviors, the mixing and absorption pond pass through dirt
Mud pipe connects the promising mixing and absorption pond and provides the sludge digestion tank of digested sludge, the primary sedimentation tank, anaerobic hydrolysis acidification tank
Pass through sludge pipe with the bottom of reflux sedimentation tank to connect with the sludge digestion tank, the aerobic biochemical pool and the reflux are heavy
Mud return line is equipped between the pond of shallow lake.
2. a kind of sewage disposal system of low sludge yield according to claim 1, which is characterized in that the water quality adjustment
Pond is equipped with grid in the upstream end of sewage.
3. a kind of sewage disposal system of low sludge yield according to claim 1, which is characterized in that the mixing and absorption
It is equipped with aeration tube in pond and the aerobic biochemical pool, the aeration tube is connected with air blower.
4. a kind of sewage disposal system of low sludge yield according to claim 3, which is characterized in that the aeration tube is equal
Even distribution is set to the bottom of pond in the mixing and absorption pond and the aerobic biochemical pool.
5. a kind of sewage disposal system of low sludge yield according to claim 1, which is characterized in that the sludge reflux
Pipe is equipped with sludge pump.
6. a kind of sewage disposal system of low sludge yield according to claim 1, which is characterized in that the water quality adjustment
PH detector and temperature detector are equipped in pond and the sludge digestion tank.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821130419.9U CN208594092U (en) | 2018-07-17 | 2018-07-17 | A kind of sewage disposal system of low sludge yield |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821130419.9U CN208594092U (en) | 2018-07-17 | 2018-07-17 | A kind of sewage disposal system of low sludge yield |
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| CN208594092U true CN208594092U (en) | 2019-03-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108689495A (en) * | 2018-07-17 | 2018-10-23 | 高密天福家纺有限公司 | A kind of sewage disposal system and method for low sludge yield |
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2018
- 2018-07-17 CN CN201821130419.9U patent/CN208594092U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108689495A (en) * | 2018-07-17 | 2018-10-23 | 高密天福家纺有限公司 | A kind of sewage disposal system and method for low sludge yield |
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