CN105174608A - Sewage treatment and sludge recycling system - Google Patents
Sewage treatment and sludge recycling system Download PDFInfo
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- CN105174608A CN105174608A CN201510497985.8A CN201510497985A CN105174608A CN 105174608 A CN105174608 A CN 105174608A CN 201510497985 A CN201510497985 A CN 201510497985A CN 105174608 A CN105174608 A CN 105174608A
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Abstract
The invention discloses a sewage treatment and sludge recycling system including a lifting device and a biochemical device; the biochemical device is connected with a drainage device and a sludge backflow well; the sludge backflow well is connected with a concentration tank and a sludge dewatering device successively, the concentration tank is connected to the biochemical device, and the sludge dewatering device is connected to the concentration tank and the lifting device; a sludge mixed liquid enters the biochemical device through the lifting device and is subjected to chemical treatment and is precipitated, sewage is discharged after being treated by the drainage device, generated sludge enters the concentration tank through the sludge backflow well, is concentrated and then is treated by the sludge dewatering device, dried sludge obtained from treatment is carried away, rinsing water generated in a filter pressing process is recycled and is subjected to precipitation treatment, generated water is directly transported to the lifting device and is treated, generated precipitated sludge is transported into the concentration tank, and upper clear water generated in the concentration tank is transported into the biochemical device; the operation cost can be reduced, and the consumption of electrical energy is reduced.
Description
Technical field
The present invention relates to a kind of technical field of sludge treatment, particularly relating to a kind of system for reclaiming mud.
Background technology
When carrying out sewage disposal, need to utilize belt filter press to carry out press filtration to mud, some wash-down waters can be produced during press filtration mud, directly sent in biochemical system to carry out biochemical treatment to the treatment process of wash-down water at present, so inevitably cause the increase of running cost to sewage work, major cause has following 4 points:
(1), this wash-down water contains polyacrylamide and PAM, and PAM is a kind of organic high molecular polymer, also be a kind of polymer water treatment flocculant product simultaneously, its viscosity is very large, when wash-down water directly being introduced biochemical system, the inwall of pipeline to be adhered to together with mud granule, causes the blocking of pipeline, even allow transport pipe loss of function.
(2), in this wash-down water, the leading indicator such as BOD5, CODcr, NH3-N, TP, SS is all higher compared with the sewage that becomes a mandarin, therefore wash-down water directly enters biochemical system and again decomposes and can consume a large amount of dissolved oxygens with digestion, increase power consumption, thus strengthen ton water running cost.
(3), this wash-down water is biochemical higher than very, is in operation and can increases management difficulty.
(4), this wash-down water enters in biochemical system and can produce new active sludge, and these mud to carry out dewatering and also can consume a part of medicament PAM, power and water energy.
As can be seen here wash-down water is directly introduced biochemical system and can do a large amount of idle works, and then form a vicious cycle, allow Sewage Plant add running cost in the middle of invisible.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of sewage disposal sludge recovery system can avoided pipeline obstruction, reduce running cost.
For solving the problems of the technologies described above, technical scheme of the present invention is: sewage disposal sludge recovery system, comprise the lifting gear for carrying mud mixed liquid, the outlet end of described lifting gear is connected with for carrying out chemically treated biochemical device to mixed solution, described biochemical device is connected with the water-freeing arrangement for waste water after outside emission treatment and the sludge reflux well for the treatment of mud, described sludge reflux well is connected with concentration basin, described concentration basin top is connected to described biochemical device by hydraulic pipe-line, described concentration basin bottom is connected to sludge dehydration device by dredging tube road, described sludge dehydration device is connected to described concentration basin and described lifting gear respectively by pipeline.
As preferred technical scheme, described lifting gear comprises lifting pond, is provided with lift pump in described lifting pond.
As preferred technical scheme, described water-freeing arrangement comprises the second pond be communicated with described biochemical device, and described second pond is connected with sterilization pool by pipeline, and described sterilization pool is provided with water port.
As the improvement to technique scheme, described sludge dehydration device comprises the sludge dewatering pond be communicated with described concentration basin, sludge filter press is provided with in described sludge dewatering pond, described sludge filter press side is provided with the pond for recovering for collecting the wash-down water produced in sludge press filtration process, and described pond for recovering is connected to described concentration basin and described lifting pond respectively by pipeline.
Owing to have employed technique scheme, sewage disposal sludge recovery system, comprise the lifting gear for carrying mud mixed liquid, the outlet end of described lifting gear is connected with for carrying out chemically treated biochemical device to mixed solution, described biochemical device is connected with the water-freeing arrangement for waste water after outside emission treatment and the sludge reflux well for the treatment of mud, described sludge reflux well is connected with concentration basin, described concentration basin top is connected to described biochemical device by hydraulic pipe-line, described concentration basin bottom is connected to sludge dehydration device by dredging tube road, described sludge dehydration device is connected to described concentration basin and described lifting gear respectively by pipeline, the invention has the beneficial effects as follows: mud mixed liquid is entered in biochemical device by lifting gear and carries out chemical treatment and precipitate, sewage emits after being disinfected by water-freeing arrangement, the mud produced then enters to concentration basin by sludge reflux well and concentrates, then processed is carried out by sludge dehydration device, process the dry mud obtained to be transported, the wash-down water produced in pressure-filtering process then carries out recovery precipitation process, the water produced then directly is delivered in lifting gear and processes together with the mud mixed liquid newly carried, the mud of the precipitation produced then is delivered in concentration basin and carries out press filtration process together with the mud of new defeated generation, the supernatant water produced in concentration basin is then transported in biochemical device and carries out chemical treatment, and then form the circular treatment of mud, the phenomenon of the obstruction pipeline that native system produces when wash-down water can be avoided directly to be delivered to lifting gear, and the sewage disposal sludge recovery system of this structure can reduce running cost, reduce the consumption of electric energy.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the present invention and explain, not delimit the scope of the invention.Wherein:
Fig. 1 is the structured flowchart of the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, set forth the present invention further.In the following detailed description, the mode only by illustrating describes some one exemplary embodiment of the present invention.Undoubtedly, those of ordinary skill in the art can recognize, when without departing from the spirit and scope of the present invention, can revise by various different mode to described embodiment.Therefore, accompanying drawing is illustrative with being described in essence, instead of for limiting the protection domain of claim.
As shown in Figure 1, sewage disposal sludge recovery system, comprises the lifting gear for carrying mud mixed liquid, and described lifting gear comprises lifting pond, is provided with lift pump, for promoting mud mixed liquid in described lifting pond.The outlet end of described lifting gear is connected with for carrying out chemically treated biochemical device to mixed solution, described biochemical device is used for carrying out biochemical treatment to mud mixed liquid, namely in described mud mixed liquid, various chemical substance is added, be convenient to sludge flocculation, by sewage water filtration process, described biochemical device is the sewage disposal device in the art known by those of ordinary skill, no longer describes in detail at this.
Described biochemical device is connected with the water-freeing arrangement for waste water after outside emission treatment and the sludge reflux well for the treatment of mud, wherein said described water-freeing arrangement comprises the second pond be communicated with described biochemical device, described second pond is connected with sterilization pool by pipeline, described sterilization pool is provided with water port, described second pond is used for making sewage carry out secondary sedimentation, water after precipitation enters in described sterilization pool and carries out disinfection, and after disinfecting, water just can outside safety dumping.
Described sludge reflux well is connected with concentration basin, described concentration basin top is connected to described biochemical device by hydraulic pipe-line, described concentration basin bottom is connected to sludge dehydration device by dredging tube road, and described sludge dehydration device is connected to described concentration basin and described lifting pond respectively by pipeline.Described sludge dehydration device comprises the sludge dewatering pond be communicated with described concentration basin, sludge filter press is provided with in described sludge dewatering pond, described sludge filter press side is provided with the pond for recovering for collecting the wash-down water produced in sludge press filtration process, and described pond for recovering is connected to described concentration basin and described lifting pond respectively by pipeline.
Working process of the present invention is:
Mud mixed liquid is collected by described lifting pond, then be pumped in described biochemical device by described lift pump and carry out chemical treatment and precipitate, after chemical treatment, mud is flocculated, be separated with sewage, therefore sewage can drain in described second pond and carry out precipitation process again, water after precipitation enters in described sterilization pool, adds sterilizing agent disinfection, and the sewage after sterilization can outwards discharge safely.The mud produced then is delivered in described concentration basin by described sludge reflux well and concentrates, the concentrated supernatant water produced then enters in described biochemical device, and the mud produced enters in described sludge dewatering pond and utilizes described sludge filter press to carry out press filtration process, wash-down water and more dry mud can be obtained in press filtration treating processes, more dry mud can directly be transported, wash-down water then needs to be transported in described pond for recovering and reclaims, after wash-down water reclaims precipitation, the precipitation obtained is transported in described concentration basin, the supernatant water obtained then is transported in described lifting pond, be subsequently processed together with the mud mixed liquid newly converged, and repeat according to said process.
The PAM contained in wash-down water, the wash-down water obtained after press filtration is carried out recovery precipitation process by of the present invention focusing on, when the supernatant water extracted in wash-down water is delivered to described lifting pond, PAM reduces greatly, therefore avoid PAM and adhere to probability on inner-walls of duct together with mud granule, avoid the blocking of pipeline.The supernatant water that wash-down water simultaneously after recycling produces reduces the leading indicators such as BOD5, CODcr, NH3-N, TP, SS, therefore the supernatant water obtained in wash-down water again enters biochemical system and carries out decomposing with when digesting, reduce the consumption of dissolved oxygen, decrease power consumption, thus decrease a ton sewage sludge recovery running cost.
More than show and describe ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (4)
1. sewage disposal sludge recovery system, it is characterized in that: comprise the lifting gear for carrying mud mixed liquid, the outlet end of described lifting gear is connected with for carrying out chemically treated biochemical device to mixed solution, described biochemical device is connected with the water-freeing arrangement for waste water after outside emission treatment and the sludge reflux well for the treatment of mud, described sludge reflux well is connected with concentration basin, described concentration basin top is connected to described biochemical device by hydraulic pipe-line, described concentration basin bottom is connected to sludge dehydration device by dredging tube road, described sludge dehydration device is connected to described concentration basin and described lifting gear respectively by pipeline.
2. sewage disposal sludge recovery system as claimed in claim 1, is characterized in that: described lifting gear comprises lifting pond, is provided with lift pump in described lifting pond.
3. sewage disposal sludge recovery system as claimed in claim 2, is characterized in that: described water-freeing arrangement comprises the second pond be communicated with described biochemical device, and described second pond is connected with sterilization pool by pipeline, and described sterilization pool is provided with water port.
4. sewage disposal sludge recovery system as claimed in claim 3, it is characterized in that: described sludge dehydration device comprises the sludge dewatering pond be communicated with described concentration basin, sludge filter press is provided with in described sludge dewatering pond, described sludge filter press side is provided with the pond for recovering for collecting the wash-down water produced in sludge press filtration process, and described pond for recovering is connected to described concentration basin and described lifting pond respectively by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510497985.8A CN105174608A (en) | 2015-08-14 | 2015-08-14 | Sewage treatment and sludge recycling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510497985.8A CN105174608A (en) | 2015-08-14 | 2015-08-14 | Sewage treatment and sludge recycling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105174608A true CN105174608A (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510497985.8A Pending CN105174608A (en) | 2015-08-14 | 2015-08-14 | Sewage treatment and sludge recycling system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108946918A (en) * | 2018-08-06 | 2018-12-07 | 昌邑海洋水业有限公司 | Sludge in Sewage Treatment biochemistry consumes abatement system and method |
| CN111892197A (en) * | 2020-07-22 | 2020-11-06 | 南通派菲克水务技术有限公司 | Integrated sludge water treatment device and treatment method |
-
2015
- 2015-08-14 CN CN201510497985.8A patent/CN105174608A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108946918A (en) * | 2018-08-06 | 2018-12-07 | 昌邑海洋水业有限公司 | Sludge in Sewage Treatment biochemistry consumes abatement system and method |
| CN111892197A (en) * | 2020-07-22 | 2020-11-06 | 南通派菲克水务技术有限公司 | Integrated sludge water treatment device and treatment method |
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Application publication date: 20151223 |