CN203904153U - Reaction device for sewage treatment and phosphorus recovery - Google Patents

Reaction device for sewage treatment and phosphorus recovery Download PDF

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Publication number
CN203904153U
CN203904153U CN201420302004.0U CN201420302004U CN203904153U CN 203904153 U CN203904153 U CN 203904153U CN 201420302004 U CN201420302004 U CN 201420302004U CN 203904153 U CN203904153 U CN 203904153U
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China
Prior art keywords
phosphorus
aerobic
reaction
biological filter
membrane
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CN201420302004.0U
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Chinese (zh)
Inventor
谢义忠
李欣
冯绮澜
高伟业
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GRANDBLUE ENVIRONMENT Co Ltd
Harbin Institute of Technology
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GRANDBLUE ENVIRONMENT Co Ltd
Harbin Institute of Technology
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Abstract

The utility model discloses a reaction device for sewage treatment and phosphorus recovery. The reaction device comprises an anoxic biofilter, an aerobic aeration biofilter, an anaerobic membrane biological reaction tank, a phosphor salt flocculation tank, a phosphor salt sedimentation tank and an aerobic membrane biological reaction tank, which are connected in sequence via pipelines. The reaction device has the beneficial effects that the reaction device achieves efficient recovery of phosphorus while treating sewage; the front two-stage BAF (biological aerated filter) devices achieve the preliminary cleaning function before recovery of phosphorus in sewage and improve the phosphorus recovery purity; the two-stage MBRs (membrane bioreactors) are beneficial to achieving recovery of water with high phosphorus content; the investment in an internal circulating phosphorus recovery system is smaller than that in other phosphorus removal methods.

Description

The reaction unit that a kind of sewage disposal and phosphorus reclaim
Technical field
The utility model relates to sewage disposal, particularly relates to the reaction unit that a kind of sewage disposal and phosphorus reclaim.
Background technology
Phosphorus in sewage is the same with nitrogen is the principal element that causes body eutrophication, in modern sewage disposal technology, phosphorus is removed index as principal pollutant and is more and more caused people's attention, national environmental protection department improves constantly sewage drainage standard in recent years, the emission concentration of phosphorus, by the 1.0mg/L of national town sewage discharge one-level B standard, is brought up to the 0.5mg/L of one-level A standard.Increasingly the increase that strictly means dephosphorization amount of emission standard, taking the sewage work of 100,000 tons of day outputs as example, according to water inlet, average total phosphorus concentration 5mg/L calculates, and water outlet will reach the standard of one-level A, need every day and remove total phosphorus 450kg, 165 tons of year removal total phosphorus.
Phosphorus is requisite nutritive substance in animal and plant body, is class Nonrenewable resources at occurring in nature phosphorus, and along with the development of industrial or agricultural, the mining deposits of global phosphorus will constantly reduce.From the angle of Sustainable development, the phosphorus in sewage is undoubtedly a kind of important resource, if the phosphorus in sewage can be carried out to efficient recovery and utilizes the optimal path that solves phosphorus-containing wastewater by being.
Dephosphorization technique is divided into biological phosphate-eliminating and chemical dephosphorization at present, biological phosphate-eliminating is to form high phosphorous biological excess sludge from water, to separate the object that reaches dephosphorization, and chemical dephosphorization is to form chemical high phosphorus containing sludge and from water, separate the object that reaches dephosphorization by add chemical agent in sewage.Although these two kinds of phosphorus removing methods have reached the object of sewage dephosphorization, pollutant component complexity in the phosphorus containing sludge forming, cannot carry out the recycling of phosphorus, after generally all dewatering, carries out sludge disposal.
Utility model content
In order to overcome the deficiencies in the prior art, the reaction unit that provides a kind of sewage disposal and phosphorus to reclaim is provided the purpose of this utility model.The utility model is realized the high efficiente callback of phosphorus in sewage disposal, and preposition secondary BAF (biological filter) device is realized the preliminary cleaning effect before sewage phosphorus reclaims, and improves the purity that phosphorus reclaims; Secondary MBR (membrane biological reaction pond/device) is conducive to realize the recovery of high phosphorus water, and the investment of internal recycle phosphorus recovery system is less than other phosphorus removing methods.
For addressing the above problem, the technical scheme that the utility model adopts is as follows:
The reaction unit that sewage disposal and phosphorus reclaim, comprises the anoxic biological filter, aerobic aeration biological filter, anaerobic membrane biological reaction pond, microcosmic salt flocculation basin, microcosmic salt settling tank and the aerobic membrane biological reaction pond that connect successively by pipeline; Inside, described anoxic biological filter is filled with granular biofilter material; Inside, described aerobic aeration biological filter is filled with granular biofilter material, and bottom is provided with aerating apparatus; Described anaerobic membrane biological reaction is provided with agitator, floating stuffing and membrane module in pond; In described microcosmic salt flocculation basin, be provided with underwater stirrer and dephosphorization medicament; Described microcosmic salt settling tank bottom is pyramidal structure; Described aerobic membrane biological reaction is provided with aerating apparatus, floating stuffing and membrane module in pond; Bottom, described aerobic membrane biological reaction pond is provided with sludge reflux pump, on described sludge reflux pump, be connected with recovery channel and by line mud go out blow-off line, on described recovery channel and blow-off line, be equipped with valve, described recovery channel is connected to bottom, anaerobic membrane biological reaction pond.
Preferably, top, described aerobic aeration biological filter is provided with the pipeline that is back to bottom, anoxic biological filter for nitrification liquid in aerobic aeration biological filter.
Preferably, become reconciled oxidation and aeration biological filter bottom, described anoxic biological filter is equipped with back flushing water inlet pipe, and top is equipped with back flushing water shoot, on described back flushing water inlet pipe, back flushing water shoot, is equipped with valve.
Preferably, in described anoxic biological filter, anaerobic membrane biological reaction pond, establish redox potential on-line detector, described aerobic aeration biological filter, aerobic membrane biological reaction are established dissolved oxygen on-line detector in pond.
Compared to existing technology, the beneficial effects of the utility model are:
1, the utility model of comparing with traditional waste water treatment process is realized the high efficiente callback of phosphorus in sewage disposal; Traditional biological removal of phosphorus in wastewater or chemical dephosphorization technology only can realize separating of phosphorus and sewage, sewage qualified discharge, and phosphorus enters sewage plant sludge treatment system with the form of residual active sludge or chemical sludge, and mud does not carry out the recycling of phosphorus.The utility model realizes by the treatment process that adopts secondary BAF (biological filter)+secondary MBR (membrane biological reaction pond/device)+internal recycle phosphorus recovery system the recycling that reaches phosphorus in sewage disposal;
2, preposition secondary BAF (biological filter) device is realized the preliminary cleaning effect before sewage phosphorus reclaims, and improves the purity that phosphorus reclaims, the utility model adopts preposition anaerobic-aerobic secondary BAF (biological filter) device, its objective is other Pollutant levels that reduce outside total phosphorus, in municipal effluent, contain a large amount of each pollutants, be mainly organic pollutant, nitrogen, phosphorus and inorganic suspended substance etc., the feature of anaerobic-aerobic secondary BAF (biological filter) device is to organism, the removal effect of total nitrogen and suspended substance is good, removal effect to total phosphorus is very poor, by the preliminary cleaning that can realize sewage that arranges of preposition secondary BAF (biological filter), except total phosphorus, the concentration of other pollutents significantly declines, be conducive to improve the purity that follow-up phosphorus reclaims.
3, secondary MBR (membrane biological reaction pond/device) is conducive to realize the recovery of high phosphorus water; Anaerobic pond in anaerobic-aerobic technique is because its total phosphorus concentration of the phosphorus effect of releasing of microorganism is higher, can Separation and Recovery high phosphorus water by MBR (membrane biological reaction pond/device) membrane module is set at anaerobic pond, and membrane module has the good effect of damming, SS in high phosphorus water (suspended substance in water) is almost 0, the concentration of COD (chemical oxygen demand (COD)) and total nitrogen is very low, is conducive to realize follow-up phosphorus efficiency and reclaims.In aerobic MBR (membrane biological reaction pond/device) pond, membrane module ensures final outlet effect, makes water outlet meet the object of high standard discharge or reuse;
4, after the utility model adopts anaerobic pond membrane sepn, the high phosphorus aqueous solution enters follow-up internal reflux phosphorus recovery system, form separating of calcium phosphate precipitation and water by dosing chemical reaction, calcium phosphate precipitation thing can directly be recycled, and dephosphorization water is back in aerobic MBR (membrane biological reaction pond/device) pond.It is that the high phosphor-removing effect of circulation fluid phosphorus concentration is good that the internal recycle phosphorus recovery system advantage of comparing with other phosphorus removing methods is set, and quantity of reflux is less than sewage load simultaneously, and the investment of internal recycle phosphorus recovery system is less than other phosphorus removing methods;
5. in the utility model, add suspended biological filler, increase the biomass of system, improve the removal effect of secondary MBR (membrane biological reaction pond/device) to dirty pollutant in water.
Brief description of the drawings
Fig. 1 is the reaction unit structural representation that in the utility model, sewage disposal and phosphorus reclaim;
Wherein, 1 is anoxic biological filter, and 2 is aerobic aeration biological filter, and 3 is anaerobic membrane biological reaction pond, and 4 is microcosmic salt flocculation basin, and 5 is microcosmic salt settling tank, and 6 is aerobic membrane biological reaction pond.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, for the reaction unit of sewage disposal in the utility model and phosphorus recovery comprises the anoxic biological filter 1, aerobic aeration biological filter 2, anaerobic membrane biological reaction pond 3, microcosmic salt flocculation basin 4, microcosmic salt settling tank 5 and the aerobic membrane biological reaction pond 6 that connect successively by pipeline; 1 inside, described anoxic biological filter is filled with granular biofilter material; 2 inside, described aerobic aeration biological filter are filled with granular biofilter material, and bottom is provided with aerating apparatus; In described anaerobic membrane biological reaction pond 3, be provided with agitator, floating stuffing and membrane module; In described microcosmic salt flocculation basin 4, be provided with underwater stirrer and dephosphorization medicament; Described microcosmic salt settling tank 5 bottoms are pyramidal structure; In described aerobic membrane biological reaction pond 6, be provided with aerating apparatus, floating stuffing and membrane module; 6 bottoms, described aerobic membrane biological reaction pond are provided with sludge reflux pump, on described sludge reflux pump, be connected with recovery channel and by line mud go out blow-off line, on described recovery channel and blow-off line, be equipped with valve, described recovery channel is connected to 3 bottoms, anaerobic membrane biological reaction pond.Described biofilter material, floating stuffing, membrane module, dephosphorization medicament are conventional material; Described biofilter material can be chosen as one or more in haydite, granulated active carbon, cinder, quartz sand; Described floating stuffing is the biologic packing material that ball-type, cylinder shape, many ribs type, hollow type or sponge-type suspend in water; Described membrane module is board-like or curtain formula hollow-fibre membrane; Described dephosphorization medicament is one or more of Tai-Ace S 150, polymerize aluminum chloride, ferric sulfate, ferrous sulfate, polymeric ferric aluminum, calcium hydroxide.
In preferred version, 2 tops, described aerobic aeration biological filter are provided with the pipeline that is back to 1 bottom, anoxic biological filter for the interior nitrification liquid in aerobic aeration biological filter 2.Oxidation and aeration biological filter 2 bottoms of becoming reconciled, described anoxic biological filter 1 are equipped with back flushing water inlet pipe, and top is equipped with back flushing water shoot, on described back flushing water inlet pipe, back flushing water shoot, is equipped with valve.In described anoxic biological filter 1, anaerobic membrane biological reaction pond 3, establish redox potential on-line detector, in described aerobic aeration biological filter 2, aerobic membrane biological reaction pond 6, establish dissolved oxygen on-line detector.Can adjust aeration rate, stirring intensity and quantity of reflux according to ORP (redox potential) detected result of the DO of aerobic processes (dissolved oxygen) detection and anaerobism, anoxic process, realize the on-line Control process of denitrogenation dephosphorizing.All valves all adopt electrically operated valve, automatically carry out unlatching and the switching of valve by computer control according to setting program, not only improved the accuracy of controlling but also reduced artificial manipulation strength; Agitator is by ORP (redox potential) on-line detector and computer system control stirring intensity.
Embodiment 1
Getting municipal effluent utilizes device in the utility model to carry out sewage disposal and phosphorus recovery:
1) denitrogenation: waste water carries out denitrogenation processing through anoxic biological filter, aerobic aeration biological filter successively; Gas-water ratio 2:1 in aerobic aeration biological filter, nitrification liquid reflux ratio is 100%, influent load is 1kgCOD/m 3.d;
2) dephosphorization: by step 1) waste water after treatment circulates and after dephosphorization is processed, completes sewage disposal and phosphorus and reclaim through anaerobic membrane biological reaction pond, microcosmic salt flocculation basin, microcosmic salt settling tank and aerobic membrane biological reaction pond successively; Wherein, anaerobic membrane biological reaction pond, under agitation condition, keeps redox potential to be-50mv; In described aerobic membrane biological reaction pond, dissolved oxygen is 1.7mg/L, return sludge ratio 30%, and suspended biological filler packing ratio 0%, internal recycle phosphorus reclaims reflux ratio 30%; Described microcosmic salt flocculation basin adds 20mg/L Tai-Ace S 150, under agitation condition, reacts 10min; Microcosmic salt sedimentation time 2.0h in microcosmic salt settling tank, reclaims separation and obtains calcium phosphate precipitation thing.
Embodiment 2
Getting municipal effluent utilizes device in the utility model to carry out sewage disposal and phosphorus recovery:
1) denitrogenation: waste water carries out denitrogenation processing through anoxic biological filter, aerobic aeration biological filter successively; Gas-water ratio 3:1 in aerobic aeration biological filter, nitrification liquid reflux ratio is 150%, influent load is 1.5kgCOD/m 3d;
2) dephosphorization: by step 1) waste water after treatment circulates and after dephosphorization is processed, completes sewage disposal and phosphorus and reclaim through anaerobic membrane biological reaction pond, microcosmic salt flocculation basin, microcosmic salt settling tank and aerobic membrane biological reaction pond successively; Wherein, anaerobic membrane biological reaction pond is under agitation condition, and redox potential is-50mv; In described aerobic membrane biological reaction pond, dissolved oxygen is 1.7mg/L, return sludge ratio 50%, and suspended biological filler packing ratio 20%, internal recycle phosphorus reclaims reflux ratio 35%; Described microcosmic salt flocculation basin adds 25mg/L ferric sulfate, under agitation condition, reacts 20min; Microcosmic salt sedimentation time 2.0h in microcosmic salt settling tank, reclaims separation and obtains calcium phosphate precipitation thing.
Embodiment 3
Getting municipal effluent utilizes device in the utility model to carry out sewage disposal and phosphorus recovery:
1) denitrogenation: waste water carries out denitrogenation processing through anoxic biological filter, aerobic aeration biological filter successively; Gas-water ratio 4:1 in aerobic aeration biological filter, nitrification liquid reflux ratio is 200%, influent load is 2kgCOD/m 3d;
2) dephosphorization: by step 1) waste water after treatment circulates and after dephosphorization is processed, completes sewage disposal and phosphorus and reclaim through anaerobic membrane biological reaction pond, microcosmic salt flocculation basin, microcosmic salt settling tank and aerobic membrane biological reaction pond successively; Wherein, anaerobic membrane biological reaction pond is under agitation condition, and redox potential is-100mv; In described aerobic membrane biological reaction pond, dissolved oxygen is 1.8mg/L, return sludge ratio 80%, and suspended biological filler packing ratio 30%, internal recycle phosphorus reclaims reflux ratio 50%; Described microcosmic salt flocculation basin adds 35mg/L ferrous sulfate, under agitation condition, reacts 40min; Microcosmic salt sedimentation time 3.0h in microcosmic salt settling tank, reclaims separation and obtains calcium phosphate precipitation thing.
Embodiment 4
Getting municipal effluent utilizes device in the utility model to carry out sewage disposal and phosphorus recovery:
1) denitrogenation: waste water carries out denitrogenation processing through anoxic biological filter, aerobic aeration biological filter successively; Gas-water ratio 5:1 in aerobic aeration biological filter, nitrification liquid reflux ratio is 300%, influent load is 3kgCOD/m 3d;
2) dephosphorization: by step 1) waste water after treatment circulates and after dephosphorization is processed, completes sewage disposal and phosphorus and reclaim through anaerobic membrane biological reaction pond, microcosmic salt flocculation basin, microcosmic salt settling tank and aerobic membrane biological reaction pond successively; Wherein, anaerobic membrane biological reaction pond is under agitation condition, and redox potential is-100mv; In described aerobic membrane biological reaction pond, dissolved oxygen is 1.8mg/L, return sludge ratio 100%, and suspended biological filler packing ratio 40%, internal recycle phosphorus reclaims reflux ratio 70%; Described microcosmic salt flocculation basin adds 40mg/L calcium hydroxide, under agitation condition, reacts 40min; Microcosmic salt sedimentation time 3.0h in microcosmic salt settling tank, reclaims separation and obtains calcium phosphate precipitation thing.
Water outlet after treatment in embodiment 1-4 is detected, and result is as following table:
As can be known from the above table, utilize the water outlet after treatment of the utility model device to be better than the standard of national sewage discharge one-level A, reached the requirement of reuse of wastewater, and realized the object of the discharge of sewage high standard or reuse.
To one skilled in the art, can be according to technical scheme described above and design, make other various corresponding changes and deformation, and within these all changes and deformation all should belong to the protection domain of the utility model claim.

Claims (4)

1. the reaction unit that sewage disposal and phosphorus reclaim, is characterized in that, comprises the anoxic biological filter, aerobic aeration biological filter, anaerobic membrane biological reaction pond, microcosmic salt flocculation basin, microcosmic salt settling tank and the aerobic membrane biological reaction pond that connect successively by pipeline; Inside, described anoxic biological filter is filled with granular biofilter material; Inside, described aerobic aeration biological filter is filled with granular biofilter material, and bottom is provided with aerating apparatus; Described anaerobic membrane biological reaction is provided with agitator, floating stuffing and membrane module in pond; In described microcosmic salt flocculation basin, be provided with underwater stirrer and dephosphorization medicament; Described microcosmic salt settling tank bottom is pyramidal structure; Described aerobic membrane biological reaction is provided with aerating apparatus, floating stuffing and membrane module in pond; Bottom, described aerobic membrane biological reaction pond is provided with sludge reflux pump, on described sludge reflux pump, be connected with recovery channel and by line mud go out blow-off line, on described recovery channel and blow-off line, be equipped with valve, described recovery channel is connected to bottom, anaerobic membrane biological reaction pond.
2. the reaction unit that sewage disposal as claimed in claim 1 and phosphorus reclaim, is characterized in that, top, described aerobic aeration biological filter is provided with the pipeline that is back to bottom, anoxic biological filter for nitrification liquid in aerobic aeration biological filter.
3. the reaction unit that sewage disposal as claimed in claim 1 or 2 and phosphorus reclaim, it is characterized in that, become reconciled oxidation and aeration biological filter bottom, described anoxic biological filter is equipped with back flushing water inlet pipe, top is equipped with back flushing water shoot, on described back flushing water inlet pipe, back flushing water shoot, is equipped with valve.
4. the reaction unit that sewage disposal as claimed in claim 1 or 2 and phosphorus reclaim, it is characterized in that, in described anoxic biological filter, anaerobic membrane biological reaction pond, establish redox potential on-line detector, described aerobic aeration biological filter, aerobic membrane biological reaction are established dissolved oxygen on-line detector in pond.
CN201420302004.0U 2014-06-06 2014-06-06 Reaction device for sewage treatment and phosphorus recovery Withdrawn - After Issue CN203904153U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103979750A (en) * 2014-06-06 2014-08-13 瀚蓝环境股份有限公司 Reactor for sewage treatment and phosphorus recovery and method for recovering phosphorus by using same
CN110255808A (en) * 2019-05-09 2019-09-20 深圳市君脉膜科技有限公司 The sewage disposal system being integrated based on Internet of Things and artificial intelligence

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103979750A (en) * 2014-06-06 2014-08-13 瀚蓝环境股份有限公司 Reactor for sewage treatment and phosphorus recovery and method for recovering phosphorus by using same
CN110255808A (en) * 2019-05-09 2019-09-20 深圳市君脉膜科技有限公司 The sewage disposal system being integrated based on Internet of Things and artificial intelligence

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Granted publication date: 20141029

Effective date of abandoning: 20150715