CN203582656U - Reclaimed water reuse system based on oxidation ditch process - Google Patents

Reclaimed water reuse system based on oxidation ditch process Download PDF

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Publication number
CN203582656U
CN203582656U CN201320806035.5U CN201320806035U CN203582656U CN 203582656 U CN203582656 U CN 203582656U CN 201320806035 U CN201320806035 U CN 201320806035U CN 203582656 U CN203582656 U CN 203582656U
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China
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sewage
oxidation ditch
tank
system based
reuse system
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CN201320806035.5U
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Chinese (zh)
Inventor
李黎
潘志成
房湫洁
陈元维
费功全
李勇
陈春阳
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HAITIAN WATER GROUP Co Ltd
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HAITIAN WATER GROUP Co Ltd
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Abstract

The utility model discloses a reclaimed water reuse system based on an oxidation ditch process. The reclaimed water reuse system is characterized by comprising a grating well 1, a pretreatment sewage tank 2, an oxidation ditch 5, a sedimentation tank 6, a disinfecting tank 7, a clean water tank 8, a sludge pump 9 and a sludge tank 10. Sewage enters into the grating well 1 through the pretreatment sewage tank so as to remove impurities and other suspended solids in the sewage; the sewage treated by the grating well 1 is buffered in the pretreatment sewage tank 2 and enters into the oxidation ditch 5; organic matters in the sewage are decomposed through microorganism suspending in the sewage through aeration, so as to reduce biological oxygen demand; biodegraded sewage flows into the sedimentation tank 6, the sludge settled on the tank bottom flows back to the oxidation ditch through the sludge pump 9 for recycling; rest sludge is discharged to sludge tank 10, and the settled clean water is disinfected and sterilized in the disinfecting tank 7 and the standard water is discharged into the clean water tank 8, thus realizing sewage reuse.

Description

A kind of intermediate water reuse system based on oxidation ditch process
Technical field
The utility model relates to middle water reuse field, specifically refers to a kind of intermediate water reuse system based on oxidation ditch process.
Background technology
Along with the increase of urban population, urban life water displacement constantly increases, so the load of municipal sewage treatment and requiring also in continuous change.Urban sewage treatment process still application have coagulation, second-stage treatment, an advanced treatment, but the most generally popular be both at home and abroad to take the second-stage treatment that traditional activated sludge process is core.Determining of urban sewage treatment process, first will be according to the water in city, environmental quality requirement, and the water quality for the treatment of sewage, can determine for the combined factors of the aspects such as technical development state, urban economy situation and city management operating requirement that utilize.What recent years, domestic application was more has types such as A-O or A-A-O technique, SBR technique, oxidation ditch process.A-O or A-A-O technique are also anaerobic-aerobic or anaerobic-anoxic-aerobic process, the exploitation of this technique is mainly in order to meet the needs of denitrogenation dephosphorizing, be a kind of can cost-effective biological deamination phosphorus removing technology, the many Sewage Plant of south China just adopt this technique, but this technique shortcoming is that use range is little, cannot be applicable to the processing of other sewage.SBR technique is also continuous batch activated sludge process technique.The main equipment of this technique is that two precipitations are made again in Ji Zuo aeration tank, a pond, so management operating is simple, is particularly suitable for the municipal sewage treatment of Small Urban, but be unsuitable for the operate continuously compared with big yield, even if process, also need several covers pond combined running, so floor space is large, invests high.
Utility model content
The purpose of this utility model be to provide a kind of simple and reasonable, operation easily, less investment, floor space is little and practical, can effectively reduce a kind of intermediate water reuse system based on oxidation ditch process of running cost simultaneously.
The utility model is achieved through the following technical solutions: a kind of intermediate water reuse system based on oxidation ditch process, it is characterized in that: comprise the grille well, pretreating sewage pond, oxidation ditch, settling tank, the sterilization pool that are communicated with sewage lagoon, and pipeline communication is passed through in described grille well and pretreating sewage pond, settling tank and oxidation ditch are by pipeline communication, and settling tank and sterilization pool pass through pipeline communication.First treatment sewage enters grille well except the impurity in decontaminated water and other suspended substances through sewage lagoon, grille well is provided with coarse rack and fine fack, coarse rack is except large solid impurity in decontaminated water, fine fack is except the medium and small impurity of decontaminated water and other suspended substances, sewage after grille well is processed is entering that pretreating sewage pond is cushioned and even water quality, then enter oxidation ditch, the microorganism that makes to be suspended in sewage by aeration is decomposed the organism in sewage, reduce biological oxygen demand (BOD), sewage after biological degradation, flow into again settling tank, settling tank is provided with scum board and overflow weir, the scum silica frost that is suspended in sewage surface is used through scum board and is removed, the sludge part being deposited at the bottom of pond is back to oxidation ditch recycle by sludge pump, excess sludge drains into sludge sump, moisture in mud is back to grille well, primary water after precipitation enters the clean water basin that enter up to standard after sterilization pool disinfection.In clean water basin, water can supply reuse, can be used as the miscellaneous waters such as greening irrigation, especially meaningful to water-deficient area.As later treatment scale expands, can consider to adopt sludge dewatering equipment to dewater to excess sludge, to reduce sludge disposal amount.Because existing oxidation ditch process belongs to mature technology, and improvement of the present utility model do not lie in this, therefore repeat no more structure and the principle of work of oxidation ditch.
Further, for improving filtration efficiency and the effluent quality of sewage, be also provided with cascade filtration pond, and be provided with hair filter in described cascade filtration pond, the import of cascade filtration pond is communicated with by sewage pump with pretreating sewage pond, and the outlet of cascade filtration pond is communicated with oxidation ditch.Because the hair filter in secondary filter can effectively remove impurity tiny in decontaminated water and other suspended substances, and then filtration efficiency and the effluent quality of sewage have been improved.
Further, for stablizing effluent quality and the load that reduces clean water basin, to guarantee the normal safe operation of clean water basin, between described sterilization pool and clean water basin, be also provided with Buffer Pool, sewage after sterilization pool is disinfected is introduced into Buffer Pool and stops buffering, thereby stablized effluent quality, also effectively reduced owing to entering the water outlet water yield after sterilization pool excessive and for the problem of the impact of clean water basin.
Described in the utility model, described in a kind of intermediate water reuse system based on oxidation ditch process, sterilization pool is preferably disinfecting tank, and sterilizing agent is preferably ozone strong oxidizing agent, but is not limited only to this, also can select according to practical situation.
The utility model compared with prior art, has the following advantages and beneficial effect:
(1) the utility model, by adopting oxidation ditch process to dispose of sewage, makes to have sewage treating efficiency high, and effluent quality is good, while device structure advantages of simple, advantage easy and simple to handle.And oxidation ditch process is a kind of activated sludge process of extended aeration, because load is very low, and impact load is strong, effluent quality is good, mud output is few and stable, structure operational management advantages of simple, and simultaneous oxidation ditch technique can design by denitrogenation dephosphorizing, can transform slightly existing denitrogenation dephosphorizing, practicality is improved.
(2) the utility model further filters the sewage after upper step grille well is processed by increasing cascade filtration pond, has effectively improved the filtration efficiency of system sewage, for subsequent handling has reduced operating load, has improved the safe reliability of whole system operation.
(3) the utility model is by adopting contact sterilization pool to the sewage disinfection after processing, improved the sterilisation effect of sewage, simultaneously sterilizing agent adopt ozone strong oxidizing agent to people animal and environment without any damaging and destroy, the security that has therefore further improved system.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the structural representation of the utility model embodiment 2.
Fig. 3 is the structural representation of the utility model embodiment 3.
Wherein: 1-grille well, 2-pretreating sewage pond, 3-lift pump, the connection of 4-piping, 5-oxidation ditch, 6-settling tank, 7-sterilization pool, 8-clean water basin, 9-sludge pump, 10-sludge sump, 11-Buffer Pool.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but embodiment of the present utility model is not limited to this.
Embodiment 1:
The middle water reuse of the present embodiment is by following process implementation, as shown in Figure 1, first treatment sewage enters grille well 1 except the impurity in decontaminated water and other suspended substances through sewage lagoon, grille well 1 is provided with coarse rack and fine fack, coarse rack is except large solid impurity in decontaminated water, fine fack is except the medium and small impurity of decontaminated water and other suspended substances, sewage after grille well 1 is processed enters oxidation ditch 5 after entering pretreating sewage pond 2 bufferings, the microorganism that makes to be suspended in sewage by aeration is decomposed the organism in sewage, reduce biological oxygen demand (BOD), sewage after biological degradation, flow into again settling tank 6, settling tank 6 is provided with scum board and overflow weir, the scum silica frost that is suspended in sewage surface is used through scum board and is removed, the mud being deposited at the bottom of pond is back to oxidation ditch recycle by part by sludge pump 9, excess sludge drains into sludge sump 10 and processes, moisture in mud is back to grille well 1, primary water after precipitation enters the clean water basin 8 that enter up to standard after sterilization pool 7 disinfections.As shown in Figure 1, in the disclosed middle water treatment system of the utility model, each parts all connect by pipeline, and on pipeline, be provided with the valve of controlling its keying, because pipeline and valve are the routine techniques in this area, and improvement of the present utility model does not lie in pipeline and valve yet, and those skilled in the art can draw setting and the working process of pipeline and valve by basic general knowledge, therefore do not indicate in detail in Fig. 1, it is not illustrated in detail yet.
Embodiment 2:
The difference of the present embodiment and embodiment 1 is, as shown in Figure 2, further on the basis of embodiment 1, set up cascade filtration pond 4, described cascade filtration pond is provided with hair filter, pretreating sewage pond 2 is communicated with cascade filtration pond 4 by sewage pump 3, and the outlet in cascade filtration pond 4 is communicated with oxidation ditch 5.Other parts of the present embodiment are identical with embodiment 1, repeat no more.
Embodiment 3:
The difference of the present embodiment and above-described embodiment is, as shown in Figure 3, further on the basis of above-described embodiment, between sterilization pool 7 clean water basin 8, has set up Buffer Pool 11.Other parts of the present embodiment are same as the previously described embodiments, repeat no more.
The above; it is only preferred embodiment of the present utility model; not the utility model is done to any pro forma restriction, any simple modification, equivalent variations that every foundation technical spirit of the present utility model is done above embodiment, within all falling into protection domain of the present utility model.

Claims (7)

1. the intermediate water reuse system based on oxidation ditch process, it is characterized in that: comprise the grille well (1), pretreating sewage pond (2), oxidation ditch (5), settling tank (6), sterilization pool (7), the clean water basin (8) that are communicated with successively, and the import of described grille well (1) is communicated with sludge sump (10) and sewage lagoon respectively.
2. a kind of intermediate water reuse system based on oxidation ditch process according to claim 1, it is characterized in that: between described pretreating sewage pond (2) and oxidation ditch (5), be provided with cascade filtration pond (4), pretreating sewage pond (2) are communicated with cascade filtration pond (4) by sewage pump (3).
3. a kind of intermediate water reuse system based on oxidation ditch process according to claim 2, is characterized in that: described cascade filtration pond (4) is provided with hair filter.
4. a kind of intermediate water reuse system based on oxidation ditch process according to claim 1, is characterized in that: described settling tank (6) is communicated with oxidation ditch (5) by sludge pump (9).
5. a kind of intermediate water reuse system based on oxidation ditch process according to claim 1, is characterized in that: between described sterilization pool (7) and clean water basin (8), be provided with Buffer Pool (11).
6. a kind of intermediate water reuse system based on oxidation ditch process according to claim 5, is characterized in that: described sterilization pool (7) is contact sterilization pool, and sterilizing agent is ozone strong oxidizing agent.
7. a kind of intermediate water reuse system based on oxidation ditch process according to claim 1, is characterized in that: described grille well (1) is provided with coarse rack and fine fack.
CN201320806035.5U 2013-12-10 2013-12-10 Reclaimed water reuse system based on oxidation ditch process Active CN203582656U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320806035.5U CN203582656U (en) 2013-12-10 2013-12-10 Reclaimed water reuse system based on oxidation ditch process

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Application Number Priority Date Filing Date Title
CN201320806035.5U CN203582656U (en) 2013-12-10 2013-12-10 Reclaimed water reuse system based on oxidation ditch process

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105645661A (en) * 2014-11-12 2016-06-08 宜兴市天马环保工程有限公司 Domestic sewage treatment system
CN110563260A (en) * 2019-09-09 2019-12-13 湖南鑫恒环境科技有限公司 method for treating sewage by optimizing oxidation ditch process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105645661A (en) * 2014-11-12 2016-06-08 宜兴市天马环保工程有限公司 Domestic sewage treatment system
CN110563260A (en) * 2019-09-09 2019-12-13 湖南鑫恒环境科技有限公司 method for treating sewage by optimizing oxidation ditch process

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