CN115093015A - Biochemical reactor with calcium removal function - Google Patents

Biochemical reactor with calcium removal function Download PDF

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Publication number
CN115093015A
CN115093015A CN202211018375.1A CN202211018375A CN115093015A CN 115093015 A CN115093015 A CN 115093015A CN 202211018375 A CN202211018375 A CN 202211018375A CN 115093015 A CN115093015 A CN 115093015A
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sludge
biochemical
biochemical reaction
mud
calcium
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CN115093015B (en
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赵媛
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Suzhou Zhanqing Environment Technology Co ltd
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Suzhou Zhanqing Environment Technology Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
    • C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/14—Maintenance of water treatment installations
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/06—Nutrients for stimulating the growth of microorganisms
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/30—Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Treatment Of Sludge (AREA)

Abstract

The invention discloses a biochemical reactor with a calcium removal function, which comprises a biochemical reaction tank, wherein the biochemical reaction tank is internally provided with a biochemical reaction area, a water inlet pipe for wastewater and nutrient solution to enter is arranged on the side wall of the biochemical reaction tank, a water outlet for biochemical treatment water to flow out is arranged at the upper end of the biochemical reaction tank, a sludge grinder for calcium bacteria separation of calcium-containing sludge, a three-phase separator for layering the biochemical sludge and the calcium carbonate sludge, a sludge discharge pipe for discharging the calcium-containing sludge at the bottom inside the biochemical reaction tank into the sludge grinder, a sludge transport pipe for discharging the sludge in the sludge grinder into the three-phase separator, and a biochemical sludge return pipe for returning the biochemical sludge separated from the three-phase separator into the biochemical reaction tank, wherein the lower end of the three-phase separator is also provided with a calcium carbonate sludge discharge port for discharging the calcium carbonate sludge, and the invention can remove calcium while carrying out biochemical reaction in the biochemical reaction tank, the biochemical reaction efficiency is ensured, the chemical calcium removal at the front end of the biochemical treatment is avoided, and the treatment cost is reduced.

Description

Biochemical reactor with calcium removal function
Technical Field
The invention relates to the technical field of water treatment, in particular to a biochemical reactor with a calcium removal function.
Background
The biochemical treatment method is a sewage treatment method which decomposes organic matters and certain inorganic poisons (such as cyanides, sulfides and the like) in the waste water by utilizing the biochemical action in microorganisms so as to convert unstable organic matters and inorganic poisons into water, carbonic acid and other nontoxic substances. The treatment process of the method is to mix and contact the wastewater with microorganisms, and can be divided into aerobic, anoxic and anaerobic biological treatment, which can generate carbonic acid decomposition products (carbonic acid, carbonate radical and bicarbonate radical).
High-concentration calcium ion wastewater (the concentration of calcium ions is more than 200mg/L, hereinafter referred to as high-calcium wastewater) is generated in the production process of various industries, high-concentration calcium ions are contained in raw wastewater of some industries, high-calcium wastewater is generated after the pH value of the raw wastewater of some industries (such as the electronic aluminum foil production industry) is regulated by lime and phosphorus is removed, and high-calcium wastewater is generated after the raw wastewater of some industries (such as the graphite cathode material and the photovoltaic production industry) is subjected to lime fluorine removal.
In the biochemical treatment process of the high-calcium wastewater, high-concentration calcium ions can react with carbonate produced by biological metabolism to generate calcium carbonate solid, and the process can cause the following problems:
firstly, calcium carbonate is combined with biochemical sludge to lead the biochemical sludge to be inorganic, reduce the concentration of active microorganisms in the sludge and increase the density of the sludge, so that the sludge leaves a reaction area and is deposited at the bottom of a biochemical system, thereby greatly weakening the processing capacity of the biochemical reaction area;
secondly, sludge deposited at the bottom is combined with each other, and the more the sludge is deposited, the thicker the sludge is, the effective volume of the biochemical reaction tank is reduced, and the biochemical efficiency is greatly reduced;
and thirdly, if the calcium carbonate scales on the surface of the equipment or the pipeline, the function of the corresponding equipment and the function of the corresponding pipeline can be seriously influenced after long-term accumulation.
In order to maintain the biochemical effect of the biochemical system, the main technique is to reduce the calcium ion concentration before the biochemical system is fed with water. The chemical precipitation method is a relatively mature calcium removal technology applied in China at present, but the chemical calcium removal process arranged at the biochemical front end is usually used for precipitating calcium by sodium carbonate or sodium bicarbonate, so that the medicament cost is high, the sludge production is high, the high cost causes more enterprises to abandon the process for removing calcium at the biochemical front end, and high-concentration calcium ions directly enter the biochemical process stage, so that the three problems are difficult to solve for a long time, the standard of drainage is influenced, and a water treatment system can be crashed.
Disclosure of Invention
In order to make up for the defects, the invention provides the biochemical reactor with the calcium removal function, which can carry out the biochemical reaction in the biochemical reaction tank and the calcium removal operation at the same time, effectively solves the problems caused by the sludge containing calcium, avoids the chemical calcium removal at the front end of the biochemical treatment and reduces the treatment cost.
The technical scheme adopted by the invention for solving the technical problem is as follows: a biochemical reactor with a calcium removal function comprises a biochemical reaction tank, wherein a biochemical reaction area is formed inside the biochemical reaction tank, a water inlet pipe is arranged on the side wall of the biochemical reaction tank, wastewater and nutrient solution can enter the biochemical reaction area of the biochemical reaction tank through the water inlet pipe, a water outlet is arranged at the upper end of the biochemical reaction tank, biochemical treatment water formed after the biochemical reaction area treatment can flow out through the water outlet at the upper end of the biochemical reaction tank, the biochemical reaction tank is further provided with a sludge grinder, a three-phase separator, a sludge discharge pipe, a sludge transport pipe and a biochemical sludge return pipe, one end of the sludge discharge pipe is communicated with the inner bottom of the biochemical reaction tank, the other end of the sludge discharge pipe is communicated with an inlet of the sludge grinder, calcium-containing sludge deposited at the bottom of the biochemical reaction tank can enter the sludge grinder through the sludge discharge pipe, and the sludge grinder can carry out calcium bacteria separation on the calcium-containing sludge to form biochemical sludge and calcium carbonate sludge, the outlet of the sludge grinder is communicated with the inlet of the three-phase separator through a sludge conveying pipe, the three-phase separator can layer biochemical sludge and calcium carbonate sludge, the side wall of the three-phase separator is provided with a biochemical sludge return port corresponding to a biochemical sludge layer, the biochemical sludge return port is communicated with a biochemical reaction zone of the biochemical reaction tank through a biochemical sludge return pipe, the layered biochemical sludge in the three-phase separator can enter the biochemical reaction zone of the biochemical reaction tank through the biochemical sludge return pipe, the lower end of the three-phase separator is also provided with a calcium carbonate sludge discharge port, and the layered calcium carbonate sludge in the three-phase separator can be discharged through the calcium carbonate sludge discharge port.
As a further improvement of the invention, the device is also provided with a mud scraper and a mud scraper driving device, wherein the mud scraper can be arranged at the bottom of the biochemical reaction tank in a reciprocating sliding manner in the horizontal direction, the mud scraper can push calcium-containing sludge deposited at the bottom of the biochemical reaction tank to the inlet of the mud pipe in a reciprocating sliding manner, and the mud scraper driving device drives the mud scraper to reciprocate.
As a further improvement of the invention, one end of the bottom of the biochemical reaction tank along the sliding direction of the mud scraping plate is provided with a sludge bucket, the bottom height of the sludge bucket is lower than that of the biochemical reaction tank, the mud scraping plate can push calcium-containing sludge at the bottom of the biochemical reaction tank into the sludge bucket, and one end of the sludge discharge pipe is communicated with the bottom of the inner side of the sludge bucket.
As a further improvement of the invention, the sludge treatment device is also provided with a sludge discharge pump, a sludge output pump and a sludge return pump, wherein the sludge discharge pump can pump sludge in a sludge hopper into the sludge grinder through a sludge discharge pipe, the sludge output pump can pump the sludge in the sludge grinder into the three-phase separator, and the sludge return pump can pump biochemical sludge on the upper layer in the three-phase separator into a biochemical reaction area of the biochemical reaction tank.
As a further improvement of the invention, the scraper driving device comprises a scraper traveling crane, a scraper track and a scraper connecting rod, wherein the scraper track crosses over the upper end of the biochemical reaction tank along the movement direction of the scraper, the scraper traveling crane can run on the scraper track, one end of the scraper connecting rod is mounted on the scraper traveling crane, and the other end of the scraper connecting rod extends into the biochemical reaction tank and is fixedly connected with the upper end of the scraper.
As a further improvement of the invention, the mud scraper is also provided with a roller which can rotate and rolls along the bottom surface of the biochemical reaction tank, and the upper end of the mud scraper is also provided with an elastic part which provides elastic holding force for keeping the mud scraper in close contact with the bottom of the biochemical reaction tank.
As a further improvement of the invention, the scraper lifting mechanism is also arranged, the scraper is arranged on the scraper lifting mechanism, and the scraper lifting mechanism can drive the scraper to move up and down longitudinally.
As a further improvement of the invention, at least one submersible stirrer is also arranged in the biochemical reaction area of the biochemical reaction tank, and the submersible stirrer can stir the wastewater in the biochemical reaction area.
As a further improvement of the invention, the bottom of the biochemical reaction tank is also paved with an aerator, and the aerator can carry out timed micropore aeration on the deposited calcium-containing sludge at the bottom of the biochemical reaction tank.
As a further improvement of the invention, the side wall of the upper end of the biochemical reaction tank is also provided with a biochemical water return pipe which is communicated with the water inlet pipe, and the biochemical water return pipe is also provided with a reflux pump which can pump biochemical treatment water in the biochemical reaction tank into the water inlet pipe through the biochemical water return pipe.
The beneficial technical effects of the invention are as follows: the invention discharges calcium-containing sludge from the bottom of a biochemical reaction tank into a sludge grinder through a sludge discharge pipe at the lower end of the biochemical reaction tank, generates centrifugal force and friction force through the rotation of a machine body of the sludge grinder, ensures that the calcium-containing sludge continuously collides and rubs with a grinding body in the sludge grinder, further separates calcium bacteria from the calcium-containing sludge to form mixed sludge consisting of the biochemical sludge and the calcium carbonate sludge, conveys the mixed sludge to a three-phase separator through a sludge conveying pipe, separates the biochemical sludge and the calcium carbonate sludge into layers after the separation by the three-phase separator, leads the biochemical sludge with lower density to be on the upper layer after standing, and leads the biochemical sludge to flow back to a biochemical reaction area of the biochemical reaction tank through a biochemical sludge return pipe, further ensures that the concentration of the biochemical sludge in the biochemical reaction area is not influenced by high-concentration calcium ions, and ensures that the concentration of the biochemical sludge in the biochemical reaction area of the biochemical reaction tank is maintained in a stable state, this application has avoided when getting rid of calcium ion sedimentation because calcium sedimentation leads to the problem that biochemical sludge concentration reduces, be favorable to guaranteeing that biochemical efficiency is stable, the normal function in biochemical reaction pond has been guaranteed, this application in time gets rid of the deposit in biochemical reaction bottom of the pool portion including calcium mud simultaneously, be favorable to maintaining the effective pond capacity in biochemical reaction district, the great including calcium mud of density of timely discharge reaction system bottom, can also avoid the amass of high density mud to press the knot board in the cell body lower part, occupy biochemical reaction space, and effectively alleviate the problem of pipeline and equipment scale deposit in the biochemical reaction pond, biochemical treatment front end chemistry decalcification has been avoided simultaneously, the treatment cost is reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is an enlarged view of a portion a in fig. 1.
Detailed Description
The embodiment is as follows: the utility model provides a biochemical reactor with calcium removal function, includes biochemical reaction pond 1, biochemical reaction pond 1 is inside to be formed with biochemical reaction district 20, be equipped with inlet tube 2 on the 1 lateral wall of biochemical reaction pond, waste water and nutrient solution can pass through inlet tube 2 gets into in biochemical reaction district 20 of biochemical reaction pond 1, and biochemical reaction pond 1 upper end is equipped with delivery port 3, and the biochemical treatment water that forms after biochemical reaction district 20 handles can flow through delivery port 3 of biochemical reaction pond 1 upper end, still is equipped with sludge grinder 4, three-phase separator 5, mud pipe 6, mud transport pipe 7 and biochemical sludge return pipe 8, mud pipe 6 one end and biochemical reaction pond 1 inboard bottom intercommunication, mud pipe 6 other end and sludge grinder 4 entry intercommunication, the sedimentary calcium-containing mud in biochemical reaction pond 1 bottom can get into sludge grinder 4 through mud pipe 6, sludge grinder 4 can carry out calcium-containing bacterium with the mud and form biochemical mud and calcium carbonate sludge mud separation The outlet of the sludge grinder 4 is communicated with the inlet of the three-phase separator 5 through the sludge conveying pipe 7, the three-phase separator 5 can layer biochemical sludge and calcium carbonate sludge, the side wall of the three-phase separator 5 is provided with a biochemical sludge return port corresponding to a biochemical sludge layer, the biochemical sludge return port is communicated with the biochemical reaction zone 20 of the biochemical reaction tank 1 through a biochemical sludge return pipe 8, the layered biochemical sludge in the three-phase separator 5 can enter the biochemical reaction zone 20 of the biochemical reaction tank 1 through the biochemical sludge return pipe 8, the lower end of the three-phase separator 5 is also provided with a calcium carbonate sludge discharge port 9, and the layered calcium carbonate sludge in the three-phase separator 5 can be discharged through the calcium carbonate sludge discharge port 9.
High-calcium nitrogen-containing wastewater and nutrient solution are discharged into a biochemical reaction tank 1 through a water inlet pipe 2, biochemical sludge is arranged in a biochemical reaction area 20 of the biochemical reaction tank 1, the wastewater is subjected to biochemical reaction in the biochemical reaction area 20 to generate carbonate, bicarbonate and a small amount of carbonic acid, the carbonate is combined with calcium ions in the water to form calcium carbonate, the calcium carbonate is combined with the biochemical sludge in the biochemical reaction area 20 to ensure that the biochemical sludge is gradually mineralized to form calcium-containing sludge with grey white large particles, the calcium-containing sludge is deposited at the bottom of the biochemical reaction tank 1, a calcium-containing sludge deposition area 21 is formed at the bottom of the biochemical reaction tank 1, the sludge in the calcium-containing sludge deposition area 21 can enter a sludge grinder 4 through a sludge discharge pipe 6, the machine body of the sludge grinder 4 rotates to ensure that a grinding body in the sludge grinder 4 generates centrifugal force and friction force, and the calcium-containing sludge is continuously collided and rubbed with the grinding body in the sludge grinder 4, calcium-containing sludge and calcium bacteria are separated to form mixed sludge consisting of biochemical sludge and calcium carbonate sludge, the mixed sludge is conveyed into a three-phase separator 5 through a sludge conveying pipe 7, the biochemical sludge and the calcium carbonate sludge in the mixed sludge are layered in the three-phase separator 5, the biochemical sludge is floated after standing to form an upper biochemical sludge layer due to low density of the biochemical sludge, the calcium carbonate sludge sinks to the lower end of the three-phase separator 5 after standing due to high density of the calcium carbonate sludge, the biochemical sludge in the biochemical sludge layer finally flows back to a biochemical reaction area 20 of a biochemical reaction tank 1 through a biochemical sludge return pipe 8, the calcium carbonate sludge is discharged out of the three-phase separator 5 through a calcium carbonate sludge discharge port 9, and the calcium carbonate sludge is subjected to subsequent treatment by a sludge treatment system, so that the calcium-containing sludge at the bottom of the biochemical reaction tank can be discharged in time, and the occupation of the space of the biochemical reaction tank is avoided, the effective volume of the biochemical reaction tank is ensured, the biochemical treatment efficiency of the wastewater is further ensured, meanwhile, calcium-containing sludge is separated, the biochemical sludge flows back to the reaction area of the biochemical reaction tank again, the concentration stability of the biochemical sludge in the biochemical reaction tank is ensured, the treatment capacity of the biochemical reaction area 20 is further ensured, deposition of calcium-containing sludge on biochemical treatment equipment and pipelines in the biochemical reaction tank 1 is also avoided, the long-term stable operation of the biochemical treatment equipment and the pipelines is ensured, the biochemical treatment efficiency is further ensured, the long-term stable normal work of the biochemical reaction tank 1 is ensured, and the influence of the calcium-containing sludge is avoided.
The device is characterized by further comprising a mud scraper 10 and a mud scraper driving device, wherein the mud scraper 10 can be installed at the bottom of the biochemical reaction tank 1 in a reciprocating sliding mode in the horizontal direction, the mud scraper 10 can push calcium-containing sludge deposited at the bottom of the biochemical reaction tank 1 to an inlet of the mud discharge pipe 6 in a reciprocating sliding mode, and the mud scraper driving device drives the mud scraper 10 to reciprocate.
Through set up the mud scraper 10 in biochemical reaction pond 1 bottom, push away to mud pipe 6 import department with the sedimentary calcareous mud in biochemical reaction pond 1 bottom by mud scraper 10 for contain the quick, smooth mud pipe 6 discharge of following of calcareous mud and handle in the mud grinding machine 4, avoid containing calcareous mud can not discharge fast and lead to the tie board behind biochemical reaction pond 1 bottom deposit, be difficult to discharge.
Except adopting the above-mentioned structure to realize that contains calcium mud discharges fast, can also realize containing calcium mud discharges fast through other structures, if set up the toper sharp bottom in biochemical reaction pond 1 bottom surface, set up the import of mud pipe 6 in the lowest position of toper sharp bottom, containing calcium mud also can initiatively gather to the mud pipe 6 department of biochemical reaction pond 1 sharp bottom department under the dead weight effect, still or set up the circulation conveyor in biochemical reaction pond 1 bottom, containing calcium mud that sinks to biochemical reaction pond 1 bottom continues to carry to mud pipe 6 department, this for the equivalent alternative structure that this field of technology person in the art thinks of very easily according to this application, belong to this patent protection scope.
The bottom of the biochemical reaction tank 1 is provided with a sludge hopper 11 along one end of the sliding direction of the sludge scraper 10, the bottom surface of the sludge hopper 11 is lower than the bottom surface of the biochemical reaction tank 1, the sludge scraper 10 can push calcium-containing sludge in the bottom of the biochemical reaction tank 1 into the sludge hopper 11, and the inlet at one end of the sludge discharge pipe 6 is communicated with the bottom of the inner side of the sludge hopper 11.
The bottom of the biochemical reaction tank 1 is provided with a sinking sludge hopper 11, calcium-containing sludge deposited at the bottom of the biochemical reaction tank 1 can be pushed and scraped into the sludge hopper 11 through the pushing and scraping of the sludge scraper 10, the calcium-containing sludge is collected in the sludge hopper 11, the calcium-containing sludge can be rapidly discharged out of the biochemical reaction tank 1, meanwhile, the reaction space in the biochemical reaction tank 1 is not influenced, the reciprocating motion of the sludge scraper 10 is not influenced, the sludge hopper 11 is preferably a funnel-shaped structure with the size of an opening at the upper end larger than that of the bottom surface at the lower end, the sludge hopper 11 can be arranged at one end or in the middle of the biochemical reaction tank 1 and is arranged at one end of the biochemical reaction tank 1, one sludge scraper 10 can be pushed and scraped in the biochemical reaction tank 1 in a reciprocating manner, if the sludge hopper 11 is arranged in the middle of the biochemical reaction tank 1, two sludge scrapers 10 are optimally arranged to move towards each other, and the structures are equivalent structures which can be easily thought by technical personnel in the field according to the application, belong to the protection scope of this patent.
Still be equipped with sludge pump, mud delivery pump and mud backwash pump, in sludge bucket 11 interior mud can be squeezed into sludge grinder 4 through mud pipe 6 to the sludge pump, in sludge pump can squeeze into three-phase separator 5 with sludge grinder 4 interior mud, in the mud backwash pump can squeeze into biochemical reaction district 20 of biochemical reaction pond 1 with the biochemical mud of three-phase separator 5 upper strata. Realize the initiative of mud through the pump and carry, be convenient for arrange sludge grinder 4 and three-phase separator 5, can realize the control to the mud delivery capacity through the control to the pump, also can realize carrying through mud self gravity certainly without the pump.
The mud scraper drive arrangement includes the mud scraper driving 12, scrapes mud track 13 and scrapes mud connecting rod 14, scrape mud track 13 and span in 1 upper ends of biochemical reaction tank along the mud scraper 10 direction of motion, the mud scraper driving 12 can move on scraping mud track 13, scrapes mud connecting rod 14 one end and installs on mud scraper driving 12, the mud scraper connecting rod 14 other end stretch into in biochemical reaction tank 1 and with mud scraper 10 upper end fixed connection.
The sludge scraper 10 can move back and forth on the sludge scraping track 13 to scrape calcium-containing sludge in the bottom of the biochemical reaction tank 1, and the sludge scraping connecting rod 14 is preferably of a bent structure and moves along the side wall of the biochemical reaction tank 1, so that the biochemical reaction of the biochemical reaction area 20 is prevented from being influenced, and the sludge scraper can be prevented from interfering with equipment in the biochemical reaction tank 1.
Except that the mud scraping travelling crane 12 is adopted to drive the mud scraping plate 10 to reciprocate, a feed screw nut mechanism can be arranged in the biochemical reaction tank 1, the mud scraping plate 10 is arranged on a nut of the feed screw nut mechanism, and a motor outside the biochemical reaction tank 1 drives a feed screw of the feed screw nut mechanism to rotate forward and backward so as to drive the mud scraping plate 10.
The driving of the mud scraper 10 can also be realized by driving a crank-link mechanism by a motor.
Such equivalent constructions are considered to be within the scope of this patent by those skilled in the art from this disclosure.
The scraper 10 is also provided with a roller 15 capable of rotating, the roller 15 rolls along the bottom surface of the biochemical reaction tank 1, and the upper end of the scraper 10 is also provided with an elastic part which provides elastic holding force for the scraper 10 to keep close contact with the bottom of the biochemical reaction tank 1.
Set up gyro wheel 15 on the mud scraper 10 and make mud scraper 10 lower extreme and 1 underrun rolling contact in biochemical reaction pond, make mud scraper 10 reciprocating motion smooth and easy, avoid taking place to block the condition of motionless and take place, through set up the elastic component in mud scraper 10 upper end, make mud scraper 10 lower extreme in close contact with biochemical reaction pond 1 bottom surface all the time to and can cushion from top to bottom, avoid leading to mud scraper 10 to damage because of receiving the resistance too big, avoid mud scraper 10 and biochemical reaction pond 1 bottom surface can't keep in touch and lead to the mud scraping failure simultaneously, gyro wheel 15 sets up the both sides at mud scraper 10 lower extreme width direction optimally, and gyro wheel 15 can not influence the scraping of the calcium-containing mud of mud scraper 10 sedimentation on biochemical reaction pond 1 bottom surface when guaranteeing mud scraper 10 smooth and easy reciprocating motion.
And a scraper lifting mechanism 16 is further arranged, the scraper 10 is arranged on the scraper lifting mechanism 16, and the scraper lifting mechanism 16 can drive the scraper 10 to move up and down in the longitudinal direction. The scraper elevating mechanism 16 is used for realizing that the scraper 10 ascends and breaks away from the bottom of the biochemical reaction tank 1 when the scraper 10 returns after pushing calcium-containing sludge to the sludge discharge pipe 6, so as to avoid reversely scraping the calcium-containing sludge, and simultaneously, the scraper 10 can be protected and the abrasion of the scraper can be slowed down, the scraper elevating mechanism 16 can be of various structures, such as a cylinder or an oil cylinder with a piston rod extending and contracting along the longitudinal direction, the piston rod of the scraper is connected with the sludge scraping connecting rod 14 on the scraper 10, or a motor and a gear rack transmission mechanism can be used for driving a gear to rotate through the motor, so as to drive a rack to ascend and descend upwards and downwards, further, the scraper 10 is driven to move up and downwards through the sludge scraping connecting rod 14, the upper end of the sludge scraping connecting rod 14 can be hinged on the sludge scraping trolley 12, the elastic force is applied to the sludge scraping connecting rod 14 through an elastic piece, so that the sludge scraping plate 10 is kept in close contact with the bottom of the biochemical reaction tank 1, and the scraper elevating mechanism 16 is a motor and a rope, one end of the rope is wound on the rotating wheel at the power output end of the motor, the other end of the rope is connected with the side wall of the mud scraping connecting rod 14, the rotating wheel is driven by the motor to rotate to wind the rope, the mud scraping connecting rod 14 is driven to rotate to lift the mud scraping plate 10, and the type is equivalent alternative structure which can be easily thought by a person skilled in the art according to the application and belongs to the protection scope of the patent.
Still be equipped with at least one dive agitator 17 in the biochemical reaction district 20 of biochemical reaction pond 1, dive agitator 17 can stir the waste water in the biochemical reaction district 20. Submersible mixer 17 can be a plurality of, and even distribution carries out intensive mixing through submersible mixer 17 to waste water in biochemical reaction area 20 of biochemical reaction pond 1, makes the calcium ion combination in carbonate and the aquatic in the waste water form calcium carbonate, and then gets rid of the calcium in the waste water when realizing that waste water is biochemical.
An aerator 18 is further paved at the bottom of the biochemical reaction tank 1, and the aerator 18 can perform timed micropore aeration on the deposited calcium-containing sludge at the bottom of the biochemical reaction tank 1. An aerator 18 is laid in a calcium-containing sludge deposition area 21 at the bottom of the biochemical reaction tank 1, and microporous aeration is carried out at regular time, so that the bottom sludge discharge pipe 6 can be effectively prevented from being blocked by calcium-containing sludge at the bottom of the biochemical reaction tank 1.
The working flow of the biochemical reactor is as follows:
1. the high-calcium nitrogen-containing wastewater and nutrient solution enter a biochemical reaction area 20 of a biochemical reaction tank 1 through a water inlet pipe 2;
2. the waste water is biochemically reacted in the biochemical reaction area 20 to generate carbonate, bicarbonate and carbonic acid (a small amount), under the action of full stirring of the submersible stirrer 17, the carbonate is combined with calcium ions in the water to form calcium carbonate, so that the waste water is biochemically reacted and calcium in the waste water is removed, meanwhile, the biochemical sludge in the biochemical reaction area 20 is gradually mineralized after being combined with the calcium carbonate to form grey large granular calcium-containing sludge, and the calcium-containing sludge is deposited in a calcium-containing sludge deposition area 21 at the bottom of the biochemical reaction tank 1;
3. the aerator 18 laid inside the calcium-containing sludge deposition area 21 is used for timed micropore aeration, so that the bottom of the biochemical reaction tank 1 is prevented from being blocked by calcium-containing sludge plates to block the sludge discharge pipe 6, meanwhile, the backflow pipe 19 at the upper end of the biochemical reaction tank 1 conveys backflow water into the water inlet pipe 2 through the backflow pump, so that the backflow water, the wastewater and nutrient solution enter the biochemical reaction area 20 together, and the wastewater biochemical reaction efficiency is improved. The wastewater after biochemical reaction is discharged to a rear-end precipitation zone through a water outlet 3;
4. after calcium-containing sludge is precipitated to a calcium-containing sludge deposition area 21 at the bottom of the biochemical reaction tank 1, a sludge scraping travelling crane 12 is started, the calcium-containing sludge is discharged to a sludge hopper 11 by a sludge scraping plate 10, and the calcium-containing sludge is pumped into a sludge grinding machine 4 from a sludge conveying pipe 7 by a sludge pump. After the calcium-containing sludge enters the sludge grinder 4, the body of the sludge grinder 4 rotates to enable the grinding body to generate centrifugal force and friction force, the calcium-containing sludge continuously collides and rubs with the grinding body, so that calcium bacteria in the calcium-containing sludge are separated to form mixed sludge consisting of biochemical sludge and calcium carbonate sludge, the mixed sludge is conveyed to the three-phase separator 5 through the sludge conveying pipe 7 and is separated by the three-phase separator 5, the biochemical sludge and the calcium carbonate sludge are layered due to different densities, the biochemical sludge with lower density floats to the upper layer, and the calcium carbonate sludge with higher density sinks to the lower layer through the biochemical sludge return pipe 8 and is finally discharged to a sludge disposal system through a calcium carbonate sludge discharge port of the three-phase separator 5.

Claims (10)

1. The utility model provides a biochemical reactor with remove calcium function, includes biochemical reaction pond (1), biochemical reaction pond (1) inside is formed with biochemical reaction district (20), be equipped with inlet tube (2) on biochemical reaction pond (1) lateral wall, waste water can pass through with the nutrient solution inlet tube (2) get into in biochemical reaction district (20) of biochemical reaction pond (1), biochemical reaction pond (1) upper end is equipped with delivery port (3), and biochemical treatment water that forms after biochemical reaction district (20) are handled can flow its characterized in that through delivery port (3) of biochemical reaction pond (1) upper end: the sludge treatment device is also provided with a sludge grinding machine (4), a three-phase separator (5), a sludge discharge pipe (6), a sludge conveying pipe (7) and a biochemical sludge return pipe (8), one end of the sludge discharge pipe (6) is communicated with the inner side bottom of the biochemical reaction tank (1), the other end of the sludge discharge pipe (6) is communicated with the inlet of the sludge grinding machine (4), calcium-containing sludge deposited at the bottom of the biochemical reaction tank (1) can enter the sludge grinding machine (4) through the sludge discharge pipe (6), the sludge grinding machine (4) can separate calcium-containing sludge into biochemical sludge and calcium carbonate sludge through calcium bacteria separation, the outlet of the sludge grinding machine (4) is communicated with the inlet of the three-phase separator (5) through the sludge conveying pipe (7), the three-phase separator (5) can layer the biochemical sludge and the calcium carbonate sludge, the side wall of the three-phase separator (5) is provided with a biochemical sludge return port corresponding to the biochemical sludge layer, the biochemical sludge return port is communicated with a biochemical reaction area (20) of the biochemical reaction tank (1) through a biochemical sludge return pipe (8), the biochemical sludge after layering in the three-phase separator (5) can enter the biochemical reaction area (20) of the biochemical reaction tank (1) through the biochemical sludge return pipe (8), a calcium carbonate sludge discharge port (9) is further arranged at the lower end of the three-phase separator (5), and the calcium carbonate sludge after layering in the three-phase separator (5) can be discharged through the calcium carbonate sludge discharge port (9).
2. The biochemical reactor with calcium removal function according to claim 1, wherein: still be equipped with mud scraper (10) and mud scraper drive arrangement, mud scraper (10) can be in the reciprocating sliding's of horizontal direction installation in biochemical reaction pond (1) bottom, and mud scraper (10) reciprocating sliding can push the calcareous mud of biochemical reaction pond (1) bottom deposit to mud pipe (6) import department, and mud scraper drive arrangement drive mud scraper (10) reciprocating motion.
3. The biochemical reactor having a calcium removing function according to claim 2, wherein: biochemical reaction pond (1) bottom is equipped with sludge bucket (11) along the one end of mud scraper (10) slip direction, sludge bucket (11) bottom surface height is less than biochemical reaction pond (1) bottom surface height, and mud scraper (10) can push into sludge bucket (11) with the calcium-containing mud of biochemical reaction pond (1) bottom in, mud pipe (6) one end import and sludge bucket (11) inboard bottom intercommunication.
4. The biochemical reactor having a calcium removing function according to claim 3, wherein: still be equipped with sludge pump, mud delivery pump and mud backwash pump, in sludge bucket (11) interior mud can be squeezed into mud grinder (4) through mud pipe (6) to the sludge pump, in mud delivery pump can squeeze into three-phase separator (5) with mud in mud grinder (4), in mud backwash pump can squeeze into biochemical sludge on upper strata in three-phase separator (5) into biochemical reaction district (20) of biochemical reaction pond (1).
5. The biochemical reactor with calcium removal function according to claim 2, wherein: the mud scraper driving device comprises a mud scraper driving device (12), a mud scraper track (13) and a mud scraper connecting rod (14), wherein the mud scraper track (13) stretches across the upper end of the biochemical reaction tank (1) along the moving direction of the mud scraper (10), the mud scraper driving device (12) can run on the mud scraper track (13), one end of the mud scraper connecting rod (14) is installed on the mud scraper driving device (12), and the other end of the mud scraper connecting rod (14) stretches into the biochemical reaction tank (1) and is fixedly connected with the upper end of the mud scraper (10).
6. The biochemical reactor with calcium removal function according to claim 2, 3, 4 or 5, wherein: the device is characterized in that the mud scraping plate (10) is also provided with a roller (15) in a rotatable manner, the roller (15) rolls along the bottom surface of the biochemical reaction tank (1), the upper end of the mud scraping plate (10) is also provided with an elastic piece, and the elastic piece provides elastic holding force for the mud scraping plate (10) to keep in close contact with the bottom of the biochemical reaction tank (1).
7. The biochemical reactor having a calcium removing function according to claim 2, 3, 4 or 5, wherein: the scraper lifting mechanism (16) is further arranged, the scraper plate (10) is installed on the scraper lifting mechanism (16), and the scraper lifting mechanism (16) can drive the scraper plate (10) to move up and down longitudinally.
8. The biochemical reactor having a calcium removing function according to claim 1, wherein: still be equipped with at least one dive agitator (17) in biochemical reaction district (20) of biochemical reaction pond (1), dive agitator (17) can stir waste water in biochemical reaction district (20).
9. The biochemical reactor with calcium removal function according to claim 1, wherein: an aerator (18) is further paved at the bottom of the biochemical reaction tank (1), and the aerator (18) can perform timed micropore aeration on the deposited calcium-containing sludge at the bottom of the biochemical reaction tank (1).
10. The biochemical reactor having a calcium removing function according to claim 1, wherein: still be equipped with biochemical water back flow (19) on biochemical reaction pond (1) upper end lateral wall, biochemical water back flow (19) and inlet tube (2) intercommunication still are equipped with the backwash pump, the backwash pump can be with biochemical treatment water in biochemical reaction pond (1) squeeze into in inlet tube (2) through biochemical water back flow (19).
CN202211018375.1A 2022-08-24 2022-08-24 Biochemical reactor with calcium removing function Active CN115093015B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110723863A (en) * 2019-09-02 2020-01-24 广西博世科环保科技股份有限公司 Calcification prevention and control method and system for anaerobic treatment of high-calcium organic wastewater
CN111675318A (en) * 2020-06-10 2020-09-18 浙江大学 A method for treating high calcium wastewater by utilizing anaerobic granular sludge device
CN111875174A (en) * 2020-08-05 2020-11-03 江苏道同环境科技有限公司 Wastewater denitrification and calcium removal integrated device and method
CN213652185U (en) * 2020-08-06 2021-07-09 江苏道同环境科技有限公司 Nitrate waste water recycling device
CN214389555U (en) * 2021-01-08 2021-10-15 国电宿州第二热电有限公司 System for recycling power plant water quality and purifying calcium-containing sludge
CN214693770U (en) * 2021-02-05 2021-11-12 岳阳林纸股份有限公司新港天岳环保分公司 A waste water decalcification system for waste paper papermaking

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110723863A (en) * 2019-09-02 2020-01-24 广西博世科环保科技股份有限公司 Calcification prevention and control method and system for anaerobic treatment of high-calcium organic wastewater
CN111675318A (en) * 2020-06-10 2020-09-18 浙江大学 A method for treating high calcium wastewater by utilizing anaerobic granular sludge device
CN111875174A (en) * 2020-08-05 2020-11-03 江苏道同环境科技有限公司 Wastewater denitrification and calcium removal integrated device and method
CN213652185U (en) * 2020-08-06 2021-07-09 江苏道同环境科技有限公司 Nitrate waste water recycling device
CN214389555U (en) * 2021-01-08 2021-10-15 国电宿州第二热电有限公司 System for recycling power plant water quality and purifying calcium-containing sludge
CN214693770U (en) * 2021-02-05 2021-11-12 岳阳林纸股份有限公司新港天岳环保分公司 A waste water decalcification system for waste paper papermaking

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Inventor after: Zhao Yuan

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