CN222374532U - A highly efficient municipal tail water purification device - Google Patents

Abstract

The utility model discloses a municipal tail water efficient purification device, which relates to the field of water treatment and comprises a treatment box, wherein a water supply channel is arranged on the left side of the treatment box, a water inlet pipe is connected on the left side of the water supply channel, a water supply pipe is connected on the bottom of the water supply channel, a floatation material outlet channel is arranged on the right side of the treatment box, a slag scraper is connected on the top of the treatment box, a slag discharge pipe is connected on the bottom of the floatation material outlet channel, a partition board is connected in the treatment box, an air floatation chamber is arranged on the left side of the partition board, and a microbubble generator is arranged in the air floatation chamber. The membrane filtration unit and the air flotation unit are integrated integrally, the occupied area is small, the flow is short, suspended matters, algae and the like are effectively removed by the air flotation unit, the pollution of a ceramic membrane is reduced, the dosage of the agent of the air flotation unit can be reduced by advanced treatment of the ceramic membrane, the low-medicine green effect is realized, the biological membrane is built on the surface of the ceramic membrane in situ, the soluble organic matters are deeply degraded, and the high quality of the effluent water is ensured by high-precision filtration of the ceramic membrane.

Description

Municipal administration tail water high-efficient purifier

Technical Field

The utility model relates to the field of water treatment, in particular to a municipal tail water efficient purifying device.

Background

The self-water consumption of the urban water supply plant can reach 5-10% of the water yield according to different production conditions, and the self-water consumption is mainly generated in links such as sludge discharge of a sedimentation tank, back flushing of a filter tank and an active carbon filter tank, back flushing of a membrane tank, and the like, so that the research and development of the technology for treating and recycling the production wastewater of the water supply plant has important significance for realizing pollution reduction, water resource saving and water supply safety guarantee of the urban water plant.

Because the production wastewater is enriched with a plurality of harmful and toxic substances affecting the water quality of the effluent, including a large amount of suspended matters, colloid substances, organic matters and microorganisms, coagulant added in the production process, and the like, the harmful and toxic substances must be effectively removed before recycling.

At present, the research on the municipal water works production wastewater treatment and reuse technology at home and abroad is relatively weak, and the common reuse treatment technology is mainly concentrated on aspects of coagulation-precipitation, air floatation, membrane treatment and the like, and specifically comprises the following steps:

(1) Coagulation-sedimentation technique

The coagulating sedimentation technology is the most commonly used production wastewater treatment technology, namely, the production wastewater is collected into a concentration tank, supernatant is discharged or recycled after coagulating sedimentation, the operation cost of a coagulating sedimentation method is low, but the disposable investment of a structure is required to be high, as the capability of the coagulating technology for removing small molecular organic matters, soluble pollutants and microorganisms is weak, the pollutants can be re-sent into a water-producing ring section after wastewater recycling, and the wastewater recycling treatment requirement is difficult to be met by the simple coagulating sedimentation method;

(2) Air float process

The air floatation method is a treatment method for separating water and suspended matters by enabling the suspended matters to be attached to bubbles to rise to the water surface, and has good removal effect on low-density particles and algae, strong adaptability to coagulant addition and water quality change, stable effluent quality, complex air floatation process equipment, multiple equipment operation process control parameters, high maintenance cost, complex operation, high one-time investment and poor removal effect on soluble pollutants and microorganisms;

(3) Membrane treatment technology

The membrane treatment technology mainly adopts mechanical screening, is divided into microfiltration, ultrafiltration, nanofiltration, reverse osmosis filtration and other technologies according to different membrane separation apertures and pressure driving, and researches show that compared with the traditional water treatment technology, the membrane technology can remove most suspended solid particles, microorganisms, giardia, cryptosporidium and the like in water, does not cause the rise of turbidity of factory water and the increase of disinfection precursors, and has the advantages of small occupied area, high automation degree, good treatment effect and the like, but if the membrane treatment load is larger, frequent backwashing is needed, the energy consumption is higher, the wastewater is necessary to be pretreated before a membrane treatment unit, the membrane pollution is prevented, the overall water yield of a water plant is improved, and the main pretreatment technology has the advantages of coagulation, carbon adsorption, ozone oxidation and the like.

As is clear from the analysis, the conventional technologies such as coagulating sedimentation, air flotation and membrane treatment have the defects of poor removal effect of soluble pollutants and microorganisms, high investment and the like when being used for treating the industrial wastewater of a water works.

Therefore, it is necessary to invent a municipal tail water high-efficiency purification device to solve the above problems.

Disclosure of utility model

The utility model aims to provide a municipal tail water high-efficiency purifying device so as to solve the problems in the background technology.

In order to achieve the purpose, the municipal tail water efficient purifying device comprises a treatment box, wherein a water supply channel is arranged on the left side of the treatment box, a water inlet pipe is connected to the left side of the water supply channel, a water supply pipe is connected to the bottom of the water supply channel, a flotation outlet channel is arranged on the right side of the treatment box, a slag scraper is connected to the top of the treatment box, a slag discharging pipe is connected to the bottom of the flotation outlet channel, a partition plate is connected in the treatment box, an air floatation chamber is arranged on the left side of the partition plate, a microbubble generator is arranged in the air floatation chamber, the water supply pipe is communicated with the air floatation chamber, a membrane treatment chamber is arranged on the right side of the partition plate, and a ceramic membrane component is arranged in the membrane treatment chamber.

Preferably, a sealing cover is connected in the water supply channel.

Preferably, the ceramic membrane component comprises a plurality of supports, a plurality of ceramic flat membranes are connected between the supports, a water suction pipe is connected in the supports, one end of the water suction pipe is connected with a pump, the top of the pump is connected with a water guide pipe, the other end of the water guide pipe is connected with a water outlet pipe, the left side of the water outlet pipe is connected with a water return pipe, the bottom of the water return pipe is connected with a shunt pipe, the side wall of the shunt pipe is connected with a plurality of water delivery pipes, the other end of the water delivery pipe is connected with the ceramic flat membranes, the top of the water outlet pipe is connected with a water outlet pipe, the outer wall of the water outlet pipe is connected with a first valve, and the outer wall of the water return pipe is connected with a second valve.

Preferably, a floatation material guide plate corresponding to the slag scraping machine is connected in the treatment box.

The utility model has the technical effects and advantages that:

The membrane filtration unit and the air floatation unit are integrated, the occupied area is small, the flow is short, suspended matters, algae and the like are effectively removed by the air floatation unit, the pollution of a ceramic membrane is reduced, the dosage of the agent of the air floatation unit can be reduced by advanced treatment of the ceramic membrane, the low-medicine greening is realized, a biological membrane is built on the surface of the ceramic membrane in situ, the soluble organic matters are deeply degraded, and the high quality of the effluent water is ensured by high-precision filtration of the ceramic membrane.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

Fig. 2 is an enlarged schematic view of a portion a of fig. 1 according to the present utility model.

In the figure, 1, a treatment box, 2, a water supply channel, 3, a water inlet pipe, 4, a water supply pipe, 5, a flotation outlet channel, 6, a slag scraping machine, 7, a slag discharging pipe, 8, a partition board, 9, a ceramic membrane component, 91, a bracket, 92, a ceramic flat membrane, 93, a water pumping pipe, 94, a pump, 95, a water guide pipe, 96, a water outlet pipe, 97, a water return pipe, 98, a water distribution pipe, 99, a water guide pipe, 910, a water discharge pipe, 911, a first valve, 912, a second valve, 10, an air floatation chamber, 11, a micro bubble generator, 12, a sealing cover, 13, a flotation guide plate, 14 and a membrane treatment chamber.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a municipal tail water efficient purification device as shown in fig. 1-2, which comprises a treatment tank 1, wherein a water supply channel 2 is arranged on the left side of the treatment tank 1, a water inlet pipe 3 is connected on the left side of the water supply channel 2, a water supply pipe 4 is connected on the bottom of the water supply channel 2, a flotation outlet channel 5 is arranged on the right side of the treatment tank 1, a slag scraper 6 is connected on the top of the treatment tank 1, a slag discharge pipe 7 is connected on the bottom of the flotation outlet channel 5, a partition plate 8 is connected in the treatment tank 1, an air floatation chamber 10 is arranged on the left side of the partition plate 8, a microbubble generator 11 is arranged in the air floatation chamber 10, the water supply pipe 4 is communicated with the air floatation chamber 10, a membrane treatment chamber 14 is arranged on the right side of the partition plate 8, and a ceramic membrane component 9 is arranged in the membrane treatment chamber 14.

The water in the air floatation chamber 10 is treated by using the microbubble generator 11, and under the action of micro-nano bubble air floatation, organic pollutants in the sewage are surrounded by micro-nano bubbles to form a dense foam bed, so that pollutants such as suspended matters, colloid and the like in the sewage are brought to the water surface to form flocculates, and the flocculates are separated by the slag scraper 6;

The clear liquid at the bottom layer passes through the built-in ceramic membrane component 9 and is sucked by the self-pump 94 to form negative pressure, the clear liquid exceeds the ceramic flat membrane 92, the water quality is further purified, clear water generated by filtering is recycled for production, and sludge generated by air floatation is discharged to a sludge tank of the existing water works and is uniformly dehydrated and treated in the works.

The water supply channel 2 is connected with the sealing cover 12, so that the problem of overflow caused by overlarge water flow can be avoided.

The ceramic membrane assembly 9 comprises a plurality of brackets 91, a plurality of ceramic flat membranes 92 are connected between the brackets 91, a water pumping pipe 93 is connected in the brackets 91, one end of the water pumping pipe 93 is connected with a pump 94, the top of the pump 94 is connected with a water guide pipe 95, the other end of the water guide pipe 95 is connected with a water outlet pipe 96, the left side of the water outlet pipe 96 is connected with a water return pipe 97, the bottom of the water return pipe 97 is connected with a shunt pipe 98, the side wall of the shunt pipe 98 is connected with a plurality of water conveying pipes 99, the other end of the water conveying pipe 99 is connected with the ceramic flat membranes 92, the top of the water outlet pipe 96 is connected with a water outlet pipe 910, the outer wall of the water outlet pipe 96 is connected with a first valve 911, the outer wall of the water return pipe 97 is connected with a second valve 912, water in the treatment box 1 is pumped into the water pumping pipe 93 by using the pump 94, the water in the water guide pipe 95 is closed, the first valve 911 on the water outlet pipe 96 is opened, the second valve 912 on the water return pipe 97 is opened, the water can enter the shunt pipe 98, the water conveying pipe 99 is further enters the plurality of water conveying pipes 99, the water conveying pipe 99 is connected with the water conveying pipe 99, the water conveying pipe 92 is filtered by the ceramic flat membranes 92, and the ceramic flat membranes are used for treating the water.

The treatment box 1 is internally connected with a flotation material guide plate 13 corresponding to the slag scraping machine 6, so that the flotation material can be conveniently guided.

The working principle of the utility model is as follows:

Firstly, aiming at the characteristics that wastewater pollutants produced by a water supply plant mainly comprise colloid particles, organic pollutants, concentrated metals, microorganisms, algae and other impurities, suspended pollutants and soluble pollutants are mainly used, and turbidity is low, and the air floatation process has the characteristics of good removal effect on low-density suspended particles and algae, strong adaptability to coagulant addition and water quality change and the like, and the air floatation process generated by the microbubble generator 11 is adopted to pretreat reuse water;

Then, the ceramic flat membrane 92 with high flux, low operating pressure, high separation precision and strong pollution resistance is adopted as a membrane filtration unit to deeply purify the recycled water after air floatation treatment, and an immersed working mode is adopted to intercept microorganisms in the water body through the ceramic membrane to construct a biological membrane on the membrane surface in situ, so that the deep degradation of soluble organic pollutants in the water body is realized, and the produced water after the ceramic membrane filtration can be directly discharged into a natural water body or used as raw water of a tap water plant.

It should be noted that the foregoing description is only a preferred embodiment of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it should be understood that modifications, equivalents, improvements and modifications to the technical solution described in the foregoing embodiments may occur to those skilled in the art, and all modifications, equivalents, and improvements are intended to be included within the spirit and principle of the present utility model.

Claims (4)

1. The utility model provides a municipal tail water high-efficient purifier, includes the treatment box, its characterized in that the left side of treatment box is provided with the water supply channel, the left side of water supply channel is connected with the inlet tube, the bottom of water supply channel is connected with the feed pipe, the right side of treatment box is provided with flotation thing outlet channel, the top of treatment box is connected with the sediment machine of scraping, the bottom of flotation thing outlet channel is connected with the scum pipe, be connected with the baffle in the treatment box, the left side of baffle is provided with the air supporting room, be provided with microbubble generator in the air supporting room, feed pipe and air supporting room intercommunication, the right side of baffle is provided with the membrane treatment room, be provided with ceramic membrane subassembly in the membrane treatment room.

2. The efficient municipal tail water purification device according to claim 1, wherein a sealing cover is connected in the water supply channel.

3. The efficient municipal tail water purification device according to claim 1, wherein the ceramic membrane assembly comprises a plurality of supports, a plurality of ceramic flat membranes are connected between the supports, a water suction pipe is connected in the supports, one end of the water suction pipe is connected with a pump, the top of the pump is connected with a water guide pipe, the other end of the water guide pipe is connected with a water outlet pipe, the left side of the water outlet pipe is connected with a water return pipe, the bottom of the water return pipe is connected with a shunt pipe, the side wall of the shunt pipe is connected with a plurality of water pipes, the other end of the water pipe is connected with the ceramic flat membranes, the top of the water outlet pipe is connected with a water outlet pipe, the outer wall of the water outlet pipe is connected with a first valve, and the outer wall of the water return pipe is connected with a second valve.

4. The efficient municipal tail water purification device according to claim 1, wherein a floatation material guide plate corresponding to the slag scraping machine is connected in the treatment box.