CN214270578U

CN214270578U - Processing apparatus of DTRO + MVR evaporimeter

Info

Publication number: CN214270578U
Application number: CN202120120631.2U
Authority: CN
Inventors: 嵇海勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2021-09-24
Anticipated expiration: 2031-01-18

Abstract

The utility model discloses a treatment device of a DTRO + MVR evaporator, which comprises a percolate collecting tank (001), a lift pump (002), a pretreatment device (003), a primary DTRO device (004), a secondary DTRO device (005), a concentrated water tank (007) and an MVR device (006); wherein, filtration liquid collecting pit (001), elevator pump (002), preprocessing equipment (003), one-level DTRO equipment (004) connect gradually with second grade DTRO equipment (005), the equipment input port is irritated back to the first delivery outlet of one-level DTRO equipment (004), and MVR equipment (006) input port is connected to one-level DTRO equipment (004) second delivery outlet, and second grade DTRO equipment (005) is connected to one-level DTRO equipment (004) third delivery outlet, concentrated liquid output pipeline is connected to MVR equipment (006) delivery outlet. The utility model effectively reduces the liquid level of the refuse landfill reservoir area; the MVR has longer working life, and the cleaning cost is saved; the stability of the whole DTRO equipment is improved, and the yield is improved.

Description

Processing apparatus of DTRO + MVR evaporimeter

Technical Field

The utility model relates to a landfill leachate handles the field, especially relates to the processing apparatus of DTRO + MVR evaporimeter.

Background

DTRO is developed more quickly and stably as an emergency treatment technology of percolate at present, but the water quality is worse and difficult to treat due to the fact that high-concentration concentrated solution which is continuously enriched is returned to a reservoir area; the water quality of the related treated first-grade DT does not reach the standard.

The main defects in the prior art are as follows:

(1) the produced water does not reach the standard and cannot be discharged outside;

(2) the liquid level in the reservoir area of the refuse landfill cannot be reduced.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a processing apparatus of DTRO + MVR evaporimeter for solve above-mentioned problem.

The utility model discloses a following technical scheme realizes:

the treatment device of the DTRO + MVR evaporator comprises a percolate collecting tank, a lift pump, pretreatment equipment, primary DTRO equipment, secondary DTRO equipment, a concentrated water tank and MVR equipment; wherein, filtration liquid collecting pit, elevator pump, preprocessing equipment, one-level DTRO equipment connect gradually with second grade DTRO equipment, dense water tank input port is connected to the first delivery outlet of one-level DTRO equipment, and MVR equipment input port is connected to one-level DTRO equipment second delivery outlet, and second grade DTRO equipment is connected to one-level DTRO equipment third delivery outlet, concentrated solution output pipeline is connected to MVR equipment delivery outlet.

Furthermore, the recharging equipment is a concentrated solution storage tank, and the concentrated solution storage tank is used for recharging operation.

Further, the MVR equipment comprises a preheater, a heater, a compressor, a separator and a circulating pump; the first output port of heater is connected to the separator input port, and the first output port of separator passes through the compressor and connects the first input port of heater, and the second output port of separator passes through the circulating pump and connects the second input port of heater, and concentrate output pipeline is connected to the third output port of separator, the one-level DTRO equipment delivery outlet is connected through the pre-heater and is circulated bad pump input mouth, the heater second output port passes through the pre-heater and connects outside condensate pipe.

Furthermore, the pretreatment equipment comprises a pH value adjusting device, a sand filter and a security filter which are connected in sequence.

Furthermore, a first output port of the secondary DTRO equipment is connected with the pretreatment equipment, and a second output port of the secondary DTRO equipment is connected with the external discharge equipment.

The utility model has the advantages that:

(1) the utility model effectively reduces the liquid level of the refuse landfill reservoir area;

(2) the utility model can prolong the working life of MVR and save the cleaning cost;

(3) the utility model discloses increase the stability of the whole equipment of DTRO, improved output.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive effort.

Fig. 1 is a schematic diagram of the system structure of the present invention;

FIG. 2 is a schematic structural diagram of the MVR apparatus of the present invention;

in the figure, 001-percolate collecting tank, 002-lift pump, 003-pretreatment equipment, 004-primary TRO equipment, 005-secondary RO equipment, 006-MVR equipment, 007-concentrated water tank, 008-recharging equipment, 601-preheater, 602-heater, 603-compressor, 604-separator and 605-circulating pump.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

Example 1

As shown in fig. 1, the present embodiment provides a treatment apparatus for DTRO + MVR evaporator, which includes a percolate collecting tank 001, a lift pump 002, a pretreatment device 003, a primary DTRO device 004, a secondary DTRO device 005, a concentrate tank 007, and an MVR device 006; wherein, filtration liquid collecting pit 001, elevator pump 002, pretreatment facilities 003, one-level DTRO equipment 004 connect gradually with second grade DTRO equipment 005, the equipment 008 input port is irritated back to the first delivery outlet of one-level DTRO equipment 004 connection, and MVR equipment 006 input port is connected to one-level DTRO equipment 004 second delivery outlet, and second grade DTRO equipment 005 is connected to one-level DTRO equipment 004 third delivery outlet, concentrated solution output pipeline is connected to MVR equipment 006 delivery outlet.

Further, the output port of the concentrated water tank 007 is connected with a recharging device 008.

Further, the recharging device 008 is a concentrated solution reservoir, and the concentrated solution reservoir is used for recharging operation.

Further, as shown in fig. 2, the MVR apparatus 006 includes a preheater 601, a heater 602, a compressor 603, a separator 604, and a circulation pump 605; the input port of the separator 604 is connected with a first output port of the heater 602, the first output port of the separator 604 is connected with the first input port of the heater 602 through the compressor 603, the second output port of the separator 604 is connected with the second input port of the heater 602 through the circulating pump 605, the third output port of the separator 604 is connected with the concentrated solution output pipeline, the output port of the primary DTRO equipment 004 is connected with the input port of the circulating pump through the preheater 601, and the second output port of the heater 602 is connected with an external condensate pipe through the preheater 601.

Further, the pretreatment equipment 003 comprises a PH value adjusting equipment, a sand filter and a cartridge filter which are connected in sequence.

Further, a first output port of the secondary DTRO device 005 is connected to the pretreatment device 003, and a second output port is connected to an external discharge device.

The following description of the devices in this embodiment is provided:

DTRO principle of operation:

the disc tube type reverse osmosis (DTRO) is a form of reverse osmosis, is a membrane module specially used for treating high-concentration sewage, and the core technology of the module is a disc tube type membrane column. The reverse osmosis membrane and the hydraulic guide plate are stacked together, fixed by a central pull rod and an end plate and then placed into a pressure-resistant sleeve to form a membrane column. The DTRO overcomes the defect that the general reverse osmosis system is easy to block when treating the percolate, so that the system is more stable and the running cost is lower. The service life of the DT membrane column can be more than three years.

The disc tube type reverse osmosis technology is a mature technology which can ensure stable water outlet of percolate and continuously reach national first-level or second-level discharge standard at present in China. The DTRO system has flexible operation mode, can select a primary treatment form and a secondary treatment form according to the discharge standard required by the percolate, and the treated purified water can ensure to reach the primary discharge standard or the reclaimed water reuse standard in the state GB 16889-1997. The economic net water yield of the system is 75-80%, and a high-pressure system can be equipped according to the requirements of customers, so that the water yield is 90-95%. The treatment object relates to the treatment of the leachate of the refuse landfill and the leachate of the refuse compost field.

The DTRO system can be used in combination with other processes as a treatment process before final discharge, and can ensure that the percolate can reliably reach the standard after treatment.

The disc-tube reverse osmosis can directly treat the percolate without any pretreatment, thereby achieving the discharge standard required by the owners. The disc-tube reverse osmosis system is specially designed for treating high-pollution landfill leachate, and the core part of the disc-tube membrane column consists of a disc-type RO membrane, a flow guide disc, an O-shaped rubber gasket, a central pull rod and a pressure-resistant sleeve. The diaphragm and the flow guide disc are stacked at intervals, the O-shaped rubber gaskets are placed in grooves on two sides of the flow guide disc, are pulled through together by the center and are placed in the pressure-resistant casing, and two ends of the pressure-resistant casing are sealed by metal end plates. The DT membrane column has unique fluid mechanics characteristics, the surface of the membrane can generate high tangential flow velocity, meanwhile, the continuous 180-degree turning of the fluid in the membrane column prevents the fluid concentration polarization caused by smooth flow, the open type channel can ensure that the system can still normally work even if the SDI of the percolate reaches 20, the complex pretreatment is not needed, and the service life of the membrane can be more than 3 years.

For the treatment of municipal solid waste leachate, if the municipal solid waste leachate meets the national first-level discharge standard, a two-stage DTRO treatment system is generally provided, and comprises a central control system, a sand filter, a first-stage reverse osmosis system, a second-stage reverse osmosis system, a leachate storage tank, a sulfuric acid storage tank, a purified water storage tank, a cleaning agent storage tank, a degassing tower and the like.

The treatment effect of DTRO system does not rely on the biodegradability of filtration liquid, so be applicable to landfill leachate and compost waterlogging caused by excessive rainfall filtration liquid treatment of different periods, and all have that the system operation is stable, the treatment effeciency is high, characteristics such as water quality is good of play, DTRO system area is little, simple to operate can combine different preliminary treatment and concentrate treatment modes according to the actual conditions of engineering, according to local conditions.

According to the required discharge index of the percolate, the DTRO device can select a primary treatment form and a secondary treatment form, and the treated purified water can ensure to reach the primary discharge standard or the reclaimed water reuse standard in the state GB 16889-1997. The economic clean water yield of the system is 75-80%, and a high-pressure system can be arranged according to the requirements of users, so that the water yield is 90-95%.

The DTRO system has flexible operation mode, can be designed into a mode capable of being connected in series and in parallel according to the needs of users, realizes the operation modes of less water treatment amount during series connection, high water treatment quality standard, large water treatment amount during parallel connection and low emission standard, and meets the requirements of different owners.

The DTRO system can be manufactured into container type design, vehicle-mounted equipment and indoor installation type equipment, and is convenient for different use requirements. Particularly, after the refuse dump is sealed, the refuse dump can be transported to other places for continuous use, and greater economic benefits are brought into play for enterprises.

MVR theory of operation:

the principle of the mechanical vapor compression (MVR) evaporator is that a high-energy-efficiency vapor compressor 603 is used for compressing secondary vapor generated by evaporation, the pressure and the temperature of the secondary vapor are improved, the secondary vapor with improved heat energy is pumped into a heater 602 to heat stock solution, and the heated stock solution is continuously evaporated to generate the secondary vapor, so that a continuous evaporation state is realized. The system recycles the heat energy of the secondary steam, so that external fresh steam is not needed, and the energy consumption of the evaporation system is greatly saved.

Example 2

On the basis of embodiment 1, the present embodiment provides a schematic flow of a processing device of a DTRO + MVR evaporator, which is specifically as follows:

DTRO：

the leachate in the regulating reservoir is lifted to a leachate raw water storage tank by a pump, and enters a first-stage DTRO after simple pretreatment such as pH value regulation, a sand filter, a security filter and the like, a permeate generated after the first-stage DTRO treatment enters a second-stage DTRO for further treatment, a first-stage DTRO concentrated solution is discharged to a concentrated solution storage tank to wait for recharging treatment, and the permeate after the second-stage DTRO treatment enters a degassing tower for treatment and then is discharged after reaching the standard, and a second-stage concentrated solution is returned to the first-stage DTRO for combination and continuous treatment.

MVR：

The high-energy-efficiency steam compressor 603 is used for compressing the secondary steam generated by evaporation, the pressure and the temperature of the secondary steam are improved, the secondary steam with improved heat energy is pumped into the heater 602 to heat the stock solution, and the heated stock solution is continuously evaporated to generate the secondary steam, so that a continuous evaporation state is realized.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

The treatment device of the DTRO + MVR evaporator is characterized by comprising a percolate collecting tank (001), a lifting pump (002), pretreatment equipment (003), primary DTRO equipment (004), secondary DTRO equipment (005), a concentrated water tank (007) and MVR equipment (006); wherein, filtration liquid collecting pit (001), elevator pump (002), preprocessing equipment (003), one-level DTRO equipment (004) connect gradually with second grade DTRO equipment (005), the equipment input port is irritated back to the first delivery outlet of one-level DTRO equipment (004), and MVR equipment (006) input port is connected to one-level DTRO equipment (004) second delivery outlet, and second grade DTRO equipment (005) is connected to one-level DTRO equipment (004) third delivery outlet, concentrated liquid output pipeline is connected to MVR equipment (006) delivery outlet.
2. Treatment plant of the DTRO + MVR evaporator, according to claim 1, characterized in that the outlet of the concentrate tank (007) is connected to a refilling device (008).
3. The DTRO + MVR evaporator processing unit according to claim 2, characterized in that the recharging device (008) is a concentrate reservoir for recharging operation.
4. The DTRO + MVR evaporator processing unit according to claim 1, wherein the MVR equipment (006) comprises a preheater (601), a heater (602), a compressor (603), a separator (604), a circulation pump (605); the input port of the separator (604) is connected with a first output port of the heater (602), the first output port of the separator (604) is connected with the first input port of the heater (602) through the compressor (603), the second output port of the separator (604) is connected with the second input port of the heater (602) through the circulating pump (605), the third output port of the separator (604) is connected with the concentrated solution output pipeline, the output port of the first-stage DTRO equipment (004) is connected with the circulating pump input port through the preheater (601), and the second output port of the heater (602) is connected with an external condensate pipe through the preheater (601).
5. The DTRO + MVR evaporator treatment plant according to claim 1, characterized in that the pre-treatment device (003) comprises a PH adjusting device, a sand filter, a cartridge filter connected in series.
6. The DTRO + MVR evaporator process plant of claim 1, wherein the second DTRO device (005) has a first outlet connected to the pre-treatment device (003) and a second outlet connected to the external discharge device.