CN210419541U - Pretreatment system for bottom mud residual water treatment equipment - Google Patents

Abstract

The utility model provides a pretreatment system for bottom sediment residual water treatment equipment, which belongs to the technical field of sewage treatment and comprises an adjusting tank, a coagulation tank, a dosing device, a sedimentation tank and a clean water tank, wherein the adjusting tank is provided with a water inlet; the coagulation tank is used for coagulating the residual water sent to the coagulation tank from the self-regulation tank; the dosing device is used for storing the medicine and delivering the medicine to the coagulation tank through a pipeline to be coagulated with the residual water; the upper part of the side wall of the sedimentation tank is provided with a flow guide hole communicated with the coagulation tank; the upper part of the side wall of the clean water tank is provided with a first overflow hole communicated with the sedimentation tank; and the residual water to be treated sequentially passes through the regulating tank, the coagulating tank, the sedimentation tank and the clean water tank to realize the purification pretreatment of the residual water. The utility model provides a pretreatment systems for sediment waste water treatment facility can solve the problem that the sediment waste water yield is unstable and pH value and suspended solid fluctuation range are big of dredging, provides stable intaking for ammonia nitrogen, total nitrogen etc. in follow-up adoption biological treatment technique high efficiency gets rid of the waste water, effectively reduces pollutant discharge.

Description

Pretreatment system for bottom mud residual water treatment equipment

Technical Field

The utility model belongs to the technical field of sewage treatment, more specifically say, relate to a pretreatment systems for sediment surplus water treatment facilities.

Background

The river channel environment-friendly dredging is a novel industry developed in the last 30 years, and is a cross engineering technology of hydraulic engineering, environmental engineering and dredging engineering. Since this century, there are many different scale dredging projects being implemented or initiated in our country. According to the domestic and foreign sewage treatment experience, under the condition that the exogenous pollution of a water body is controlled, endogenous pollution, namely polluted bottom mud, must be thoroughly removed, a water body ecosystem is reconstructed, and the ideal effect can be achieved through river channel treatment, so that the river channel environmental protection dredging is generally considered to be one of important measures for removing the endogenous pollution in the water environment treatment process. However, with the implementation of environmental dredging projects, a large amount of dredging residual water is produced and is often discharged into nearby receiving waters without being effectively treated. Because the dredged residual water contains high-concentration suspended matters, nitrogen, phosphorus, organic matters and other pollutants, the dredged residual water is directly discharged into a receiving water body to cause serious ecological environment pollution. Therefore, considering the reconstruction of the aquatic ecosystem of the dredging area, the secondary pollution is prevented, and the sludge residual water must be treated after dredging to be discharged.

Particularly, the industrial production wastewater discharged to the river channel from the river through a large industrial area contains various heavy metals such as copper, zinc, nickel and the like, so that the heavy metals in the bottom mud exceed the standard. Heavy metals have obvious toxic action on the growth of microorganisms, particularly inhibit nitrification and influence the denitrification effect of residual water, so after the residual water is pretreated, ammonia nitrogen and organic pollutants in a water body need to be effectively degraded by means of the microbial metabolism with a specific function of biotechnology.

The existing dredging sediment residual water treatment mostly adopts a flocculation purification mode, has long retention time and large floor area, can only remove SS (Suspended Solids), COD (Chemical oxygen demand) and TP (Total Phosphorus), has poor ammonia nitrogen and Total nitrogen removal effects, and in addition, the SS content change and the pH value fluctuation range in the residual water are large, the water body is unstable, and cannot provide a stable environment for subsequent biological treatment, thereby influencing the subsequent biological treatment effect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pretreatment systems for sediment surplus water treatment facility to the water that solves prior art processing is unstable, leads to the poor technical problem of follow-up biological treatment effect.

In order to achieve the above object, the utility model adopts the following technical scheme: providing a pretreatment system for bottom sediment residual water treatment equipment, which comprises an adjusting tank, a coagulation tank, a dosing device, a sedimentation tank and a clean water tank, wherein the adjusting tank is provided with a water inlet for adjusting the water inflow of residual water; the coagulation tank is used for coagulating the residual water sent to the coagulation tank from the regulating tank; the dosing device is used for storing medicines and delivering the medicines into the coagulation tank through a pipeline to be coagulated with the residual water; the upper part of the side wall of the sedimentation tank is provided with a flow guide hole communicated with the coagulation tank and used for carrying out sedimentation separation on residual water coagulated by the coagulation tank; the upper part of the side wall of the clean water tank is provided with a first overflow hole communicated with the sedimentation tank and used for storing clean water separated by the sedimentation tank; and the residual water to be treated sequentially passes through the regulating tank, the coagulating tank, the sedimentation tank and the clean water tank to realize the purification pretreatment of the residual water.

Further, the dosing device comprises a coagulant dosing tank, a flocculant dosing tank and a waste acid dosing tank, wherein the coagulant dosing tank is used for storing a coagulant and pumping the coagulant into the coagulation tank; the flocculant dosing tank is used for storing a flocculant and pumping the flocculant into the coagulation tank; and the waste acid dosing tank is used for storing waste acid liquid medicine, pumping the waste acid liquid medicine into the regulating tank and regulating the pH value of the residual water.

Further, the pretreatment system further comprises a pipeline mixer arranged at the water inlet, and residual water to be treated and the waste acid liquid medicine pass through the pipeline mixer and the water inlet and enter the regulating tank.

Furthermore, pretreatment system still includes the buffer pool, set up in the coagulation basin with between the sedimentation tank, be equipped with on the coagulation basin with the buffer pool be used for supplying the surplus water in coagulation basin gets into on the wall altogether the third overflow hole of buffer pool, the water conservancy diversion hole sets up the buffer pool with on the wall altogether of sedimentation tank.

Further, the clean water tank comprises a supporting part and an overflow part, the supporting part is used for supporting the coagulation tank and the dosing device, and the supporting part is provided with a drain pipe; the overflow part is communicated with the supporting part and extends upwards, and the overflow part and the sedimentation tank are provided with a common wall for arranging the first overflow hole.

Further, the coagulating basin is including being used for right the rabbling mechanism that mixes liquid in the coagulating basin stirs, the rabbling mechanism including set up in the driving motor at coagulating basin top with stretch into stirring vane in the coagulating basin.

Furthermore, a water inlet pipe communicated with the diversion hole is arranged in the sedimentation tank, and the water inlet pipe extends downwards to the lower half part of the sedimentation tank; the sedimentation tank is also internally provided with an overflow baffle which is arranged around the inner wall of the sedimentation tank, the lower edge of the overflow baffle is connected with the inner wall of the sedimentation tank, and the upper edge of the overflow baffle extends towards one side back to the inner wall of the sedimentation tank; the upper edge of the overflow baffle is higher than the first overflow hole; and a sludge discharge pipe for discharging sludge is also arranged at the bottom of the sedimentation tank.

Further, still be equipped with the settling zone in the sedimentation tank and be located the flocculation reaction district of settling zone top, overflow baffle is located the top in flocculation reaction district, the mud pipe with settling zone intercommunication.

Further, the inner wall of the sedimentation tank inclines downwards from the upper edge of the sedimentation zone to the center direction of the sedimentation tank, and the sectional area of the lower section of the sedimentation zone is smaller than that of the upper section of the sedimentation zone.

Further, pretreatment systems still include with the equalizing basin the subassembly of intaking of water inlet intercommunication, the subassembly of intaking include with the delivery pipe of water inlet intercommunication, the delivery port with the surplus water conveyer pipe of the water inlet intercommunication of delivery pipe and the delivery port with the reserve water conveyer pipe of the water inlet intercommunication of delivery pipe, surplus water conveyer pipe with the delivery pipe cooperation is used for carrying the surplus water of treating to the equalizing basin in, reserve water conveyer pipe with the delivery pipe cooperation is used for carrying the reserve water to the equalizing basin.

The utility model provides a pretreatment systems for sediment surplus water treatment facilities's beneficial effect lies in: compared with the prior art, the utility model is used for the pretreatment systems of sediment surplus water treatment facilities, through the equalizing basin, coagulate the pond, the sedimentation tank, the clean water basin, adjust the inflow of sediment surplus water in proper order (whether select to carry out pH value as required and adjust), coagulate, deposit and separation treatment, the stable water yield, reduce the turbidity of intaking, adjust pH value, realize the preliminary treatment to the sediment surplus water, in order to avoid pH value unstable, the sediment surplus water that the suspended solid is high directly gets into the biological treatment link and to the impact of biological reaction microorganism, thereby promote sediment surplus water purification treatment effect. The utility model discloses pretreatment systems has set up the coagulating sedimentation preliminary treatment, from the discharged surplus water of sediment treatment factory, through the preliminary treatment pond, can stabilize the pH value, suspended solid content, the clear water overflow of the upper strata that has handled through the coagulating basin is connected with follow-up biological treatment technique to the clean water basin, can high-efficiently get rid of the SS in the water, COD, TP, effectively solved the unstable and pH value of the surplus water yield of dredging sediment and the big problem of suspended solid fluctuation range simultaneously, for follow-up adoption biological treatment technique high efficiency get rid of the ammonia nitrogen in the surplus water, total nitrogen etc. provide stable intaking, effectively reduce the pollutant and discharge.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic top view of a pretreatment system for a sediment residual water treatment device provided by an embodiment of the present invention;

FIG. 2 is a schematic front view of a pretreatment system for the sludge-water treatment apparatus provided in FIG. 1;

FIG. 3 is a schematic side view of the pretreatment system for the sludge-water treatment facility of FIG. 1;

FIG. 4 is a first schematic sectional view taken along line A-A of FIG. 1;

FIG. 5 is a schematic cross-sectional view taken along line A-A of FIG. 1;

fig. 6 is a schematic structural diagram of a water inlet assembly of a pretreatment system for a sediment residual water treatment device provided by an embodiment of the utility model.

Wherein, in the figures, the respective reference numerals:

1-a box body; 2-driving the motor; 3-a flocculant dosing tank; 4-stirring blades; 5-a liquid discharge pipe; 6-a coagulation tank; 7-a clean water tank; 8-a regulating tank; 9-a water inlet; 10-a waste acid dosing tank; 11-a coagulant dosing tank; 12-a third overflow aperture; 13-a sewage draining pipe; 14-a buffer pool; 15-a first overflow aperture; 16-a drain pipe; 17-a first variable frequency pump; 18-a second variable frequency pump; 19-a second overflow aperture; 20-a line mixer; 21-a sludge discharge pipe; 22-a sedimentation tank; 23-a water inlet pipe; 24-an overflow baffle; 25-a flocculation reaction zone; 26-a diffusion section; 27-a precipitation zone; 28-a residual water tank; 29-residual water delivery pipe; 30-spare water conveying pipe; 31-a standby water pool; 32-a circulating water pump; 33-a water supply pipe; 34-diversion holes.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 3 together, a pretreatment system for a residual sediment water treatment apparatus according to the present invention will now be described. The pretreatment system for the bottom sediment residual water treatment equipment comprises an adjusting tank 8, a coagulation tank 6, a dosing device, a sedimentation tank 22 and a clean water tank 7, wherein the adjusting tank 8 is provided with a water inlet 9 for adjusting the water inflow of residual water; the coagulation tank 6 is used for coagulating the residual water sent to the coagulation tank 6 from the self-regulation tank 8; the dosing device is used for storing the medicine and delivering the medicine into the coagulation tank 6 through a pipeline to be coagulated with the residual water; the upper part of the side wall of the sedimentation tank 22 is provided with a flow guide hole 34 communicated with the coagulation tank 6 and used for carrying out sedimentation separation on the residual water coagulated by the coagulation tank 6; the upper part of the side wall of the clean water tank 7 is provided with a first overflow hole 15 communicated with the sedimentation tank 22 and used for storing clean water separated by the sedimentation tank 22; the residual water to be treated sequentially passes through the regulating tank 8, the coagulating tank 6, the sedimentation tank 22 and the clean water tank 7, so that the purification pretreatment of the residual water is realized.

The utility model provides a pretreatment systems for sediment surplus water treatment facility, compared with the prior art, through equalizing basin 8, coagulating basin 6, sedimentation tank 22, clean water basin 7, adjust the inflow of sediment surplus water according to the preface (whether select to carry out pH value as required and adjust), coagulate, deposit and separation processing, stabilize the water yield, reduce the turbidity of intaking, adjust the pH value, realize the preliminary treatment to sediment surplus water, in order to avoid surplus water pH value unstable, the high sediment surplus water of suspended solid directly gets into the biological treatment link and to the impact of biological reaction microorganism, thereby promote sediment surplus water purification treatment effect. The utility model discloses pretreatment systems has set up the coagulating sedimentation preliminary treatment, from the discharged surplus water of sediment treatment factory, through the preliminary treatment pond, can stabilize the pH value, suspended solid content, the clear water overflow of the upper strata that has handled through coagulating basin 6 is connected with follow-up biological treatment technique to clear water basin 7, can high-efficiently get rid of the SS in the water, COD, TP, effectively solved the unstable problem of water content and pH value and suspended solid fluctuation range in the surplus water of dredging sediment simultaneously, for follow-up adoption biological treatment technique high efficiency get rid of the ammonia nitrogen in the surplus water, total nitrogen etc. provide stable intaking, effectively reduce pollutant discharge.

Specifically, the utility model discloses a pretreatment systems includes equalizing basin 8, coagulating basin 6, sedimentation tank 22, clean water basin 7, and the residual water passes through pipe connection and gets into equalizing basin 8, and the reuse immersible pump is taken out water coagulating basin 6, and the residual water overflow after coagulating after then carries out the sedimentation treatment to sedimentation tank 22, and the clear water on the residual water upper portion through the sedimentation treatment gets into clean water basin 7 through the overflow hole, and multistage biological contact oxidation pond is reentrant to last clear water. In fig. 1, an arrow from the adjustment tank 8 to the coagulation tank 6 indicates a flow direction of the residual water.

The adjusting tank 8 is used for controlling the water level in the tank and stabilizing the water quantity, a second overflow hole for overflowing is formed in the side wall of the adjusting tank 8, and when the water level in the adjusting tank 8 is too high, the higher water can automatically overflow; by adding the medicines into the water in the coagulation tank 6, the colloid and the fine suspended matters in the residual water are coagulated into floccules, so that the sensory indexes of the water quality such as turbidity and chromaticity of the raw water can be reduced, and various toxic and harmful pollutants can be removed; the sewage is cleaned and separated by the sedimentation tank 22.

In this embodiment, optionally, the adjusting tank 8, the coagulation tank 6, the sedimentation tank 22, the clean water tank 7 and the dosing device are integrated in the box body 1 with a square structure, and each part is adjacent to each other to form a square structure, so that the layout is compact, the floor area is reduced, the arrangement of water pipes is reduced, and the cost is reduced. Wherein, clear water tank 7 is arranged between coagulation tank 6 and regulating tank 8 at intervals, a second variable frequency pump 18 is arranged in regulating tank 8, and the residual water in regulating tank 8 is pumped into coagulation tank 6 through second variable frequency pump 18. Wherein, the variable frequency pump is a variable frequency submersible pump.

Referring to fig. 1 and 3, as a specific embodiment of the pretreatment system for the residual water treatment equipment of the sediment according to the present invention, the dosing device includes a coagulant dosing tank 11, a flocculant dosing tank 3, and a waste acid dosing tank 10, the coagulant dosing tank 11 is used for storing a coagulant and pumping the coagulant into the coagulation tank; the flocculant dosing tank 3 is used for storing a flocculant and pumping the flocculant into a coagulation tank; the waste acid dosing tank 10 is used for storing waste acid liquid medicine, pumping the waste acid liquid medicine into the regulating tank 8, and regulating the pH value of the residual water. Wherein, the coagulant is PAC polyaluminium chloride (a new water purifying material, inorganic high molecular coagulant, polyaluminium chloride for short, PAC (polyaluminium chloride for short in English); the flocculating agent is PAM (Polyacrylamide, the name of Polyacrylamide in Chinese, PAM is a nonionic polymeric flocculating agent commonly used in China), by adding PAC coagulant and PAM flocculant into the water in the coagulation tank 6, the colloid and the fine suspended matters in the wastewater are coagulated into floccules, which can not only reduce the sensory indexes of water quality such as turbidity, chromaticity and the like of raw water, but also remove various toxic and harmful pollutants, wherein PH liquid medicine is optionally added or not added according to the needs, is used for adjusting the PH value of the residual water in the adjusting tank 8 so as to be beneficial to the subsequent treatment effect, wherein the bottom of each medicine adding tank is provided with a liquid discharge pipe 5, the device is used for discharging liquid in the tank, wherein arrows pointing to the coagulation tank 6 from two medicine adding tanks in figure 1 are the adding direction of the medicine liquid.

Referring to fig. 1, as a specific implementation manner of the pretreatment system for the bottom sludge residual water treatment device provided by the present invention, the pretreatment system further includes a pipeline mixer 20 disposed at the water inlet 9, and the residual water to be treated and the waste acid liquid medicine enter the regulating tank 8 through the pipeline mixer 20 and the water inlet 9. The pipeline mixer 20 is a mixer without any mechanical moving parts, which can achieve the purpose of uniform mixing through the action of a certain component or mixing element when fluid flows in a pipeline. The pipeline mixers 20 commonly used in the industry include static baffle type, orifice type, and three-way type mixers. The liquid medicine and the residual water are uniformly mixed in the pipeline mixer 20 and then enter the regulating tank 8, so that the residual water treatment effect is improved.

Referring to fig. 1 and 3, fig. 4 and fig. 5, as a specific embodiment of the pretreatment system for the sediment residual water treatment device provided by the present invention, the pretreatment system further includes a buffer tank 14 disposed between the coagulation tank 6 and the sedimentation tank 22, a third overflow hole 12 for allowing residual water in the coagulation tank 6 to enter the buffer tank 14 is disposed on the common wall of the coagulation tank 6 and the buffer tank 14, and a diversion hole 34 is disposed on the common wall of the buffer tank 14 and the sedimentation tank 22. Optionally, the buffer pool 14 is arranged on one side or one corner of the adjacent sedimentation pool 22 of the coagulation pool 6, the buffer pool 14 and the clean water pool 7 are all provided with common wall segments, the sedimentation pool 22, the buffer pool 14, the clean water pool 7 and the adjusting pool 8 are all provided with common wall segments, the material consumption and the occupied land area can be reduced, meanwhile, through the third overflow hole 12 arranged on the common wall, precipitates in the residual water after coagulation in the coagulation pool 6 are precipitated, the residual water on the upper layer directly flows into the buffer pool 14 through the third overflow hole 12, extraction of equipment such as a water pump is not needed, and the consumption and the cost can be reduced. And the residual water after the primary treatment in the coagulation tank 6 is buffered in the buffer tank 14 and then directly flows into the sedimentation tank 22 through the diversion holes 34, so that the flowing time of the liquid is shortened, and the subsequent sedimentation and separation are facilitated. That is, in order to realize the effective linking between coagulating basin 6 and the sedimentation tank 22, set up buffer tank 14, the effect in the sedimentation tank 22 is sent into through inlet tube 23 to the surplus water through the transfer realization of buffer tank 14, is convenient for realize the stable continuous supply of surplus water, has also avoided the interference to flocculation reaction process.

Referring to fig. 1 to 3, as a specific embodiment of the pretreatment system for the bottom sediment residual water treatment device provided by the present invention, the clean water tank 7 includes a support portion and an overflow portion, the support portion is used for supporting the coagulation tank 6 and the dosing device, and the support portion is provided with a drain pipe 16; the overflow communicates with the support and extends upwards, the overflow and the settling tank 22 having a common wall for the provision of the first overflow aperture 15. Through with coagulating basin 6 and charge device overall arrangement to clear water basin 7 above, reduce area. Wherein, three charge device is arranged in a word, and sedimentation tank 22 also can set up on the supporting part of clean water basin 7, further reduces the area of occupation of land, and can increase the storage space of clean water basin 7. The clean water in the clean water tank 7 is pumped out by the first variable frequency pump 17 for further treatment. The height of the overflow part can be consistent with the height of the sedimentation tank, or slightly lower than the height of the sedimentation tank, or slightly higher than the height of the sedimentation tank.

Referring to fig. 1 to 3, as a specific embodiment of the pretreatment system for the residual water treatment device of sediment, the coagulation tank 6 includes a stirring mechanism for stirring the mixed liquid in the coagulation tank 6, and the stirring mechanism includes a driving motor 2 disposed at the top of the coagulation tank 6 and a stirring blade 4 extending into the coagulation tank 6. The medicine is required to be added into the coagulation tank 6, and after being stirred by the stirring mechanism, the medicine and the residual water can be fully mixed to form suspended matters and flocculates, so that the subsequent precipitation treatment is facilitated. Wherein, a drain pipe 13 is arranged at the bottom or the side wall of the coagulation tank 6 and is used for discharging the primarily treated sludge. Wherein, be equipped with rabbling mechanism respectively on three medicine jar for stir jar interior liquid medicine, the rabbling mechanism's structure is the same, and model and size can be the same, also can be different, and the power of its driving motor 2 that uses can be different.

Referring to fig. 1, 4 and 5, as a specific embodiment of the pretreatment system for the bottom sludge residual water treatment device provided by the present invention, a water inlet pipe 23 is disposed in the sedimentation tank 22 and is used for communicating with the diversion hole 34, and the water inlet pipe 23 extends downward to the lower half of the sedimentation tank 22; an overflow baffle 24 is also arranged in the sedimentation tank 22 and surrounds the inner wall of the sedimentation tank 22, the lower edge of the overflow baffle 24 is connected with the inner wall of the sedimentation tank 22, and the upper edge of the overflow baffle extends towards one side back to the inner wall of the sedimentation tank 22; the upper edge of the overflow baffle 24 is arranged higher than the first overflow hole 15; the bottom of the sedimentation tank 22 is also provided with a sludge discharge pipe 21 for discharging sludge. In this embodiment, the coagulation tank 6 is used for adding a flocculating agent into the residual water and uniformly mixing the flocculating agent, and the residual water overflowing from the coagulation tank 6 enters the sedimentation tank 22 through the water inlet pipe 23 to perform subsequent flocculation and sedimentation. The upper and lower layers can be gradually formed in the flocculation reaction, the suspended matters on the upper layer are finally precipitated to the lower layer along with the increase of the aggregation amount, and the residual water on the upper layer becomes the supernatant. The overflow baffle 24 and the first overflow hole 15 are used for enabling supernatant after flocculation and sedimentation in the sedimentation tank 22 to be smoothly discharged, the first overflow hole 15 is located on the common wall of the sedimentation tank 22 and the clean water tank, the height of the first overflow hole 15 is lower than the upper edge of the overflow baffle 24, and the effect that the supernatant firstly turns over the overflow baffle 24 and then flows out through the first overflow hole 15 can be achieved. Compared with the mode of directly flowing out of the sedimentation tank 22 through the first overflow hole 15, the method has the effects of increasing the overflow section of the supernatant and slowing down the local flow velocity of the surface layer of the supernatant, so that the flocculating agent and the suspended matters can fully react and precipitate. Wherein, the height of the third overflow hole 12 is higher than that of the diversion hole.

In the flocculation precipitation process of this embodiment, COD and TP in the remaining water can be effectively removed, and it is further explained herein that chinese of COD is interpreted as chemical oxygen demand, and the amount of reducing substances to be oxidized in the water sample is chemically measured. In wastewater, wastewater treatment plant effluent and contaminated water, what is meant is the oxygen equivalent of a substance that can be oxidized by a strong oxidizing agent. The Chinese interpretation of TP is the total phosphorus content, which is the total content of phosphorus in the remaining water.

The water inlet pipe 23 is used for introducing residual water added with a flocculating agent into the coagulation tank 6, flocculation reaction is carried out on the residual water, flocculate after reaction is precipitated to the bottom of the sedimentation tank 22, and final supernatant liquid rises to a position higher than the upper edge of the overflow baffle 24 and then passes over the overflow baffle 24 and is discharged out of the sedimentation tank 22 through the first overflow hole 15.

The utility model discloses at the follow-up sedimentation 22 that sets up of coagulating basin 6, introduce the residual water in coagulating basin 6 through inlet tube 23, realize the flocculation and precipitation in sedimentation 22, the supernatant of top discharges to clear water basin 7 through first overflow hole 15 in, can realize effective purification of sediment residual water, can get rid of most particulate state COD and the TP in the residual water, the effectual quality of water of dredging the in-process residual water of having guaranteed, avoid the harmful effects that its quality fluctuation caused greatly.

Referring to fig. 4 and 5, as a specific embodiment of the pretreatment system for the residual water treatment equipment of the sediment, the sedimentation tank 22 is further provided with a sedimentation zone 27 and a flocculation reaction zone 25 above the sedimentation zone 27, the overflow baffle 24 is located above the flocculation reaction zone 25, and the sludge discharge pipe 21 is communicated with the sedimentation zone 27. The inside below of sedimentation tank 22 is the settling zone 27, and the suspended solid flocculation in the surplus water is to the flocculation reaction district 25 of the top of settling zone 27 in, when the water level in sedimentation tank 22 constantly rises, and the overflow baffle 24 that the flocculation reaction district 25 top set up can keep apart the surplus water in the inside at overflow baffle 24 with the flocculation reaction in-process, and the supernatant is then from overflow baffle 24's inboard top edge overflow to overflow baffle 24's the outside, finally realizes the effect that the supernatant is discharged from first overflow hole 15 on the sedimentation tank 22 lateral wall.

Referring to fig. 1, 4 and 5, as a specific embodiment of the pretreatment system for the residual water treatment equipment of sediment according to the present invention, the inner wall of the settling tank 22 is inclined downward from the upper edge of the settling zone 27 toward the center of the settling tank 22, and the sectional area of the lower section of the settling zone 27 is smaller than the sectional area of the upper section of the settling zone 27. The settling zone 27 at the lower part of the settling tank 22 is a cavity in the shape of an inverted frustum cone, and can be an inverted quadrangular frustum pyramid or any other polygonal inverted frustum pyramid. The facer is arranged in a big end up manner, so that effective deposition of precipitates is convenient to realize, and the deposition speed is improved.

Optionally, referring to fig. 4 and 5, the settling zone 27 is in the form of an inverted quadrangular frustum pyramid, and is consistent with the settling tank 22 with a rectangular cross section in shape, so that the settling zone is beneficial to the automatic flow of the sediment to the bottom of the settling tank 22, and the automatic aggregation of the sediment is realized, thereby effectively reducing the impact of the upper water inflow on the lower sludge and the floating of the sludge, achieving a faster settling speed, and in addition, the arrangement of the lower part folded towards the center is also convenient for realizing the discharge of the sludge, avoiding the problem of a pollution discharge dead angle, facilitating the cleaning of the settling zone 27, and preventing the settling zone 27 from causing the problem of the sediment stacking and bridging due to slow flow rate.

Alternatively, referring to fig. 4 and 5, the outlet end of the water inlet pipe 23 is further provided with a diffuser portion 26 opened downward, and the inner diameter of the lower end of the diffuser portion 26 is larger than the inner diameter of the upper end of the diffuser portion 26. The inlet pipe 23 is arranged in the direction with the opening facing downwards, so that not only is the gravity action utilized, but also the influence on the upper part of the flocculation reaction zone 25 can be avoided, and the effect of effectively gathering and precipitating suspended matters is convenient to realize. The setting of diffusion portion 26 can effectively reduce the water pressure in inlet tube 23 exit, avoids rivers pressure too big to cause the water to be at the ascending convection current of upper and lower side, and then avoids the disturbance to flocculation reaction zone 25, improves the flocculation efficiency of upper portion flocculation reaction zone 25, and then improves flocculation thing precipitation efficiency, is favorable to the discharge of supernatant.

Alternatively, referring to fig. 4 and 5, the upper edge of the overflow baffle 24 is a continuous convex-concave structure. The top edge of overflow baffle 24 adopts nonlinear line's form, can avoid floating in a small amount in the overflow of the suspended solid on surface, and the derivation of supernatant then can not only be realized to continuous concavo-convex structure, can also realize the separation to small suspended solid, avoids causing liquid level rising, water pressure increase, taking the suspended solid to the condition in the overflow baffle 24 outside because of the suspended solid blocks. In this embodiment, the upper edge of the overflow baffle 24 may adopt a wave shape, a zigzag shape, a continuous semi-arc shape, and an irregular concave-convex linear form, and both the isolation of the tiny suspended solids and the smooth overflow effect of the supernatant can be achieved at the same time.

Referring to fig. 6, as the utility model provides a concrete implementation mode of a pretreatment systems for sediment surplus water treatment facilities, pretreatment systems still includes the water supply assembly with the water inlet 9 intercommunication of equalizing basin 8, the water supply assembly includes the delivery pipe 33 with the water inlet 9 intercommunication, the surplus water conveyer pipe 29 of delivery port and the water inlet intercommunication of delivery pipe 33, and the reserve water conveyer pipe 30 of delivery port and the water inlet intercommunication of delivery pipe 33, surplus water conveyer pipe 29 is used for carrying pending surplus water to equalizing basin 8 with the delivery pipe cooperation, reserve water conveyer pipe 30 is used for carrying reserve water to equalizing basin 8 with the delivery pipe cooperation. Wherein, the water delivery pipe 29 is communicated with the residual water tank 28, the standby water delivery pipe 30 is communicated with the standby water tank 31, and the residual water tank 28 and the standby water tank 31 are both provided with circulating water pumps 32. Through increase the subassembly of intaking before equalizing basin 8, the subassembly of intaking that has changed traditional sediment surplus water processing system only establishes surplus water conveyer pipe 29's inherent structure, added and established the reserve water conveyer pipe of supplying reserve water in the sediment surplus water processing system when the surplus water is not enough for water yield can not receive the influence of how much surplus water in surplus water pond 28 in the biological treatment equipment in the sediment surplus water processing system, water yield can remain throughout in the scope that the microorganism can normally grow in the biological treatment equipment, and then has ensured pretreatment systems's normal work. Under normal conditions, the residual water conveying pipe 29 is communicated with a water supply pipe to continuously convey the residual water in the residual water tank 28 to the bottom sediment residual water treatment system; when the residual water amount is insufficient, the standby water conveying pipe is communicated with the water supply pipe, and the standby water is guided into the sediment residual water treatment system, so that the sufficient water amount in the biological treatment equipment in the sediment residual water treatment system is ensured, and the normal growth of microorganisms is realized.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A pretreatment systems for sediment surplus water treatment facilities, its characterized in that includes:

the adjusting tank is provided with a water inlet and is used for adjusting the water inflow of the residual water;

the coagulation tank is used for coagulating the residual water sent to the coagulation tank from the regulating tank;

the dosing device is used for storing the medicine and delivering the medicine to the coagulation tank through a pipeline to be coagulated with the residual water;

the upper part of the side wall of the sedimentation tank is provided with a flow guide hole communicated with the coagulation tank and used for carrying out sedimentation separation on the residual water coagulated by the coagulation tank;

the upper part of the side wall of the clean water tank is provided with a first overflow hole communicated with the sedimentation tank and used for storing clean water separated by the sedimentation tank;

and the residual water to be treated sequentially passes through the regulating tank, the coagulating tank, the sedimentation tank and the clean water tank to realize the purification pretreatment of the residual water.

2. The pretreatment system for a sludge water treatment apparatus as set forth in claim 1, wherein said dosing means comprises:

the coagulant adding tank is used for storing a coagulant and pumping the coagulant into the coagulation tank;

the flocculant dosing tank is used for storing a flocculant and pumping the flocculant into the coagulation tank;

and the waste acid dosing tank is used for storing the waste acid liquid medicine, pumping the waste acid liquid medicine into the regulating tank and regulating the pH value of the residual water.

3. The pretreatment system for a sludge waste water treatment facility as claimed in claim 2, wherein said pretreatment system further comprises a line mixer disposed at said water inlet, and wherein the waste water to be treated and said waste acid liquid enter said regulating reservoir through said line mixer and said water inlet.

4. The pretreatment system for the bottom sediment residual water treatment equipment according to claim 1, further comprising a buffer tank arranged between the coagulation tank and the sedimentation tank, wherein a third overflow hole for the residual water of the coagulation tank to enter the buffer tank is arranged on the common wall of the coagulation tank and the buffer tank, and the diversion hole is arranged on the common wall of the buffer tank and the sedimentation tank.

5. The pretreatment system for a sludge water treatment apparatus as set forth in claim 1, wherein said clean water tank comprises:

the supporting part is used for supporting the coagulation tank and the dosing device and is provided with a drain pipe;

and the overflow part is communicated with the supporting part and extends upwards, and the overflow part and the sedimentation tank are provided with a common wall for arranging the first overflow hole.

6. The pretreatment system for a sludge water treatment apparatus according to claim 1, wherein the coagulation tank includes a stirring mechanism for stirring the mixed liquid in the coagulation tank, and the stirring mechanism includes a driving motor provided at a top of the coagulation tank and a stirring blade extending into the coagulation tank.

7. The pretreatment system for a sludge water treatment facility as claimed in claim 1, wherein an inlet pipe for communicating with the diversion hole is provided in the settling tank, the inlet pipe extending downward to a lower half of the settling tank;

the sedimentation tank is also internally provided with an overflow baffle which is arranged around the inner wall of the sedimentation tank, the lower edge of the overflow baffle is connected with the inner wall of the sedimentation tank, and the upper edge of the overflow baffle extends towards one side back to the inner wall of the sedimentation tank; the upper edge of the overflow baffle is higher than the first overflow hole;

and a sludge discharge pipe for discharging sludge is also arranged at the bottom of the sedimentation tank.

8. The pretreatment system for a bottom sludge residual water treatment device according to claim 7, wherein a settling zone and a flocculation reaction zone positioned above the settling zone are further arranged in the settling tank, the overflow baffle is positioned above the flocculation reaction zone, and the sludge discharge pipe is communicated with the settling zone.

9. The pretreatment system for a sludge waste water treatment apparatus as set forth in claim 8, wherein an inner wall of said settling tank is inclined from an upper edge of said settling zone downward toward a center of said settling tank, and a sectional area of a lower section of said settling zone is smaller than a sectional area of an upper section of said settling zone.

10. The pretreatment system for a bottom sediment residual water treatment facility as recited in claim 1, further comprising a water inlet assembly in communication with said water inlet of said conditioning tank, said water inlet assembly comprising a water supply pipe in communication with said water inlet, a residual water delivery pipe having a water outlet in communication with said water inlet of said water supply pipe, and a spare water delivery pipe having a water outlet in communication with said water inlet of said water supply pipe, said residual water delivery pipe cooperating with said water supply pipe for delivering residual water to be treated into said conditioning tank, said spare water delivery pipe cooperating with said water supply pipe for delivering spare water to said conditioning tank.

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