Disclosure of Invention
The invention aims to provide a washing dragon nanofiltration filtration system, solves the technical problems that the washing water treatment cost of the washing dragon is high and the water quality after treatment is not ideal in the prior art, and achieves the technical effects of reducing the washing water treatment cost and fully utilizing the washing water.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a washing dragon nanofiltration filtration system comprises the following parts:
the water inlet pipeline is connected with the rinsing bin or/and the neutralizing bin of the washing dragon so as to collect washing water;
one end of the pretreatment component is connected with the water inlet pipeline;
the nanofiltration component is connected with the pretreatment component; the nanofiltration component comprises a water inlet, a water production outlet, a concentrated water outlet, a water production isolation valve, a water inlet isolation valve, a nanofiltration membrane and a central pipe; the water inlet, the water production outlet and the concentrated water outlet are fixedly arranged in a large circular pipe from the inside of the external ear respectively, and the large circular pipe is connected with the central pipe; the water production isolation valve is close to the side wall of the central pipe, and a nanofiltration membrane is arranged between the water inlet isolation valve and the water production isolation valve so as to filter washing water; the water inlet isolation valve is characterized by also comprising an adhesive tape sealing sleeve, and a nanofiltration membrane is also arranged between the adhesive tape sealing sleeve and the water inlet isolation valve;
the post-treatment component is communicated with the nanofiltration component and is connected with a water outlet pipeline; the water outlet pipeline is connected with a reuse water collecting container of the washing dragon so as to reuse the filtered water.
Preferably, the nanofiltration assembly is directly connected with the water inlet pipe.
Preferably, the pretreatment assembly is provided with a regulating reservoir.
More preferably, the pretreatment module is further provided with a sedimentation tank connected with the adjusting tank.
More preferably, the aftertreatment component is provided with a carbon adsorption device.
Particularly preferably, the pretreatment component is also provided with an oxidation contact pool; the post-treatment component is also provided with a reverse osmosis membrane.
Preferably, the order of the reverse osmosis membrane and the carbon adsorption device is adjustable.
One or more technical solutions provided by the present application have at least the following technical effects or advantages:
according to the technical scheme, as the water inlet pipeline connected with the rinsing bin or/and the neutralizing bin of the washing dragon is connected with the pretreatment component, the nanofiltration component provided with the nanofiltration membrane is communicated, and then the water is connected with the water outlet pipeline through the post-treatment component for recycling, and other technical means, the content of pollutants in water used in all processes except the pre-washing and the main-washing is less than half of the water discharged by the pre-washing and the main-washing, the COD is less than 50, namely the removal rate is about 70 percent, the water quality requirement of rinsing water is met, and the rinsing water can also be mixed with clear water to be used as the last rinsing water. Because the discharged water to be treated is not from the pre-washing bin and the main washing bin with high pollution degree but from the rinsing bin with lower pollution degree, the equipment cost of the water treatment is lower, and the effect after filtration is obvious. The technical problems that the washing water treatment cost of the washing machine is high and the water quality after treatment is not ideal in the prior art are effectively solved, and the technical effects of reducing the washing water treatment cost and fully recycling the washing water are further achieved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of a nanofiltration assembly according to the present invention;
FIG. 3 is a schematic structural diagram of an embodiment of the present invention employing a conditioning tank;
FIG. 4 is a schematic structural diagram of an embodiment of the present invention using a regulating tank in combination with a settling tank;
FIG. 5 is a schematic structural diagram of an embodiment of the present invention using a settling tank and a carbon adsorption unit in combination with the settling tank;
FIG. 6 is a schematic structural diagram of an embodiment of the present invention which adopts a sedimentation tank, a sedimentation tank and a contact oxidation tank in combination with a carbon adsorption device and a reverse osmosis membrane.
In the figure, 10-water inlet pipeline, 20-water outlet pipeline, 100-pretreatment component, 110-regulating reservoir, 120-sedimentation tank, 130-oxidation contact tank, 200-post-treatment component, 210-carbon adsorption device, 220-reverse osmosis membrane, 300-nanofiltration component, 310-water inlet, 313-concentrated water outlet, 315-produced water outlet, 320-produced water isolation valve, 330-water inlet isolation valve, 340-adhesive tape envelope, 350-central pipe and 360-nanofiltration membrane.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The water discharged by the washing dragon has a recycling function, but the recycling of the water discharged by all washing steps and all bins of the washing dragon is realized by mixing the water discharged by all bins of the washing dragon together, the washing dragon is not collected in a classified manner, the washing dragon is only collected together in a unified manner and is recycled after being filtered in a unified manner, the mixed water has more pollutants and can reach the water quality required by rinsing after being treated, the removal rate of the pollutants is very high, the treatment process requirement is complex, the cost of purchasing water treatment equipment is high, the daily water treatment cost is high, and the final water quality does not necessarily meet the requirement of the rinsing process. Import filters are generally very expensive and are replaced at regular intervals. According to the technical scheme of the embodiment of the application, the problem that the washing water treatment cost is high and the water quality after treatment is not ideal in the prior art is solved by providing the washing dragon nanofiltration filtration system, the washing dragon is connected with the nanofiltration assembly through the water inlet pipeline of the rinsing bin or/and the neutralization bin, the nanofiltration assembly provided with the nanofiltration membrane is connected with the pretreatment assembly, and then the washing dragon is connected with the water outlet pipeline through the aftertreatment assembly for recycling, so that the beneficial effects of reducing the washing water treatment cost and fully recycling the washing water are achieved.
The general idea of the embodiment of the invention for solving the technical problems is as follows:
the water inlet pipeline of the rinsing bin or/and the neutralizing bin connected with the washing dragon is connected with the pretreatment component, then the nanofiltration component provided with the nanofiltration membrane is communicated, and then the water outlet pipeline is connected with the post-treatment component for recycling, so that the pollutant content in the water used in all the procedures except the pre-washing and the main-washing is less than half of the water discharged by the pre-washing and the main-washing (COD is about 700 and 450, and after the nano-filtration treatment, the COD is about 50 or less), namely the removal rate is about 70 percent, the water quality requirement of the rinsing water is met, and the rinsing water can also be mixed with clear water to be used as the last rinsing water.
Specifically, because the discharged water to be treated is not from the pre-washing bin and the main washing bin with high pollution degree but from the washing bin with low pollution degree, the equipment cost of the water treatment is low, expensive high-standard filtering equipment is not needed, the washed discharged water is selectively adopted before filtering and then filtered by using the device, the discharged water with high pollution degree is avoided, and the effect after filtering is obvious.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
Example 1
A laundria nanofiltration filtration system, as shown in fig. 1 and 2, comprising:
the water inlet pipeline is connected with the rinsing bin or/and the neutralizing bin of the washing dragon so as to collect washing water;
one end of the pretreatment component is connected with a water inlet pipeline;
the nanofiltration component is connected with the pretreatment component; the nanofiltration component comprises a water inlet, a water production outlet, a concentrated water outlet, a water production isolation valve, a water inlet isolation valve, a nanofiltration membrane and a central pipe; the water inlet, the water production outlet and the concentrated water outlet are fixedly arranged in a large circular pipe from the inside of the external ear respectively, and the large circular pipe is connected with a central pipe; the water production isolation valve is close to the side wall of the central pipe, and a nanofiltration membrane is arranged between the water inlet isolation valve and the water production isolation valve so as to filter the washing water; the device also comprises an adhesive tape sealing sleeve, and a nanofiltration membrane is also arranged between the adhesive tape sealing sleeve and the water inlet isolating valve;
the post-treatment component is communicated with the nanofiltration component and is connected with a water outlet pipeline; the water outlet pipeline is connected with a reuse water collecting container of the washing dragon so as to reuse the filtered water.
The nanofiltration component is directly connected with a water inlet pipeline.
Example 2
On the basis of the above, the pretreatment module is provided with a conditioning tank, as shown in fig. 3.
Specifically, as shown in fig. 4, the pretreatment module is further provided with a sedimentation tank connected with the adjusting tank.
More specifically, as shown in fig. 5, the aftertreatment component is provided with a carbon adsorption device.
Example 3
As shown in fig. 6, on the basis of the above, the pretreatment module is also provided with an oxidation contact pool; the post-treatment component is also provided with a reverse osmosis membrane. The order of the permeable membrane and the carbon adsorption unit can be adjusted.
The core of the above embodiment is a nanofiltration system, and the removal rate of various pollutants is as high as more than 70%. The sewage enters the reverse osmosis membrane component after being pressurized by the high-pressure pump, and water can penetrate through the nanofiltration membrane to enter a fresh water side in high pressure due to the selective permeability of the nanofiltration membrane, and various pollutants are flushed out along with high-pressure water.
The nanofiltration system is characterized as follows:
1. meets the standards of qualified certification for drinking water (ANSI/NSF 60);
2. full-automatic control system
3. Designed aiming at the recycling characteristics of the reclaimed water, the recycled water can be freely distributed (except pre-washing and main-washing)
4. Nanofiltration removes a large variety of pollutants, including: SS, COD, TDS, LAS, microorganisms, bacteria, organic matter, solid particles, and the like. The quality of the reuse water is ensured.
Details of the washing water treatment using example 1 and other water treatment methods are as follows:
table 1 shows the respective contents of harmful substances in the untreated washing wastewater.
As can be seen from the above, the nanofiltration system of example 1 alone can remove a large amount of harmful substances of the washing water. Other embodiments incorporate additional facilities beyond the nanofiltration system to better filter the water. Because the embodiment 1 has ideal filtering effect by only using the nanofiltration system, the embodiment 1 is a filtering mode with good cost performance.
The invention relates to a process for classified collection, classified recycling and optimized water treatment of drained water in different washing steps of a washing machine. The process flow mainly comprises the following steps: the high-concentration drainage of the main washing part of the front bin of the washing dragon and the drainage with higher first-time water passing concentration are not used for rinsing and recycling, but only used for pre-washing or main washing.
And (3) for all the drained water after the secondary water passing is cleaned by a nanofiltration process, the drained water is used for all the procedures except pre-washing and main washing, and in order to ensure the perfect quality, a few clear water can be added.
The content of pollutants (COD is only 170) of the reclaimed water (water used in all processes except pre-washing and main-washing) is less than half of that of the first two-stage drainage (COD is about 700 and 450), and after nanofiltration (and other treatment processes are added), the COD is less than 50, namely the removal rate is about 70%, so that the water quality requirement of rinsing water can be met, and the rinsing water can also be mixed with clean water to be used as the final water. The equipment cost for purchasing water treatment by adopting the process is lower (if only nanofiltration equipment is used, the purchasing cost is about 20 ten thousand yuan), the occupied area is small, and the daily water treatment cost is lower (the treatment cost per ton of water is about 1 yuan).
The invention mainly carries out the treatment of a nanofiltration system and the reuse of reclaimed water on the washing water, can purposefully store the beneficial part of the washing reuse water and remove the harmful part of the washing reuse water, and has the problems of overlarge water quantity, mixed reuse water and excessive water in the existing washing dragon.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.