JPH04114487U - Wastewater reuse equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the door-to-door wastewater reuse equipment and save water by reusing wastewater. [Structure] A sensor measures the pollution level of wastewater from a wastewater source that is likely to discharge wastewater with a low level of pollution, and only the wastewater with a low level of pollution is selected and processed to generate recycled water.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a wastewater reuse device.

0002

[Conventional technology]

Traditionally, wastewater has generally been reused in the following ways:

0003 (1) If wastewater treatment is carried out on the premises, it will be treated in the order of a), b), and c). It will be done. a) Combine the entire amount of wastewater; b) Perform primary processing + secondary processing, c) When it becomes necessary to carry out processing for reuse, only the amount necessary for reuse2 Next, the treated water is further processed.

0004 (2) If wastewater is treated off-site, it will be treated in the order of a) and b). a) Combine the entire amount of wastewater; b) When it becomes necessary to carry out processing for reuse, only the amount necessary for reuse1 Perform next processing + secondary processing + advanced processing.

[0005]

[Problem that the idea aims to solve]

However, the conventional method has the following problems.

[0006] When attempting to obtain reclaimed water in order to once mix the entire amount of wastewater generated on the premises. , it is necessary to treat wastewater containing high concentrations of various pollutants. Therefore, the analogy For example, high initial costs and running costs such as membrane treatment and activated carbon treatment are Advanced treatment methods had to be used.

[0007] On the other hand, the properties of wastewater discharged from households vary greatly depending on the source and time of discharge. Become. When wastewater is reused, the pollution level is reduced, such as bath wastewater and laundry rinse water. The smaller the value, the easier the treatment before reuse, and the easier it is to sort the wastewater. Therefore, conventional small-sized combined treatment equipment is used to treat this together with highly polluted items. can be said to be unsatisfactory in terms of energy cost.

[0008]

[Means to solve the problem]

The wastewater reuse device of the present invention to solve the above problem collects wastewater from the discharge source. A water collecting means for collecting water, a measuring means for measuring the pollution level of wastewater using a sensor, and a measuring means for measuring the pollution level of wastewater using a sensor Sorting means to screen only wastewater with low pollution level, and recycling of selected wastewater with low pollution level. and means for producing reclaimed water that is purified for use. And, the drainage regeneration of this invention The equipment used is suitable for drainage from sources that are likely to discharge wastewater with a low level of pollution. The system collects these wastewater, measures its pollution level using sensors, and Only wastewater with low turbidity is purified and reused.

[0009]

[Effect]

In general, when reusing wastewater, it is better to treat it if there are fewer types of pollutants and the concentration is lower. is simple and good. For example, bath waste water and laundry waste water have a low degree of pollution, especially bath waste water, Laundry rinse water can be as clear as tap water. In this case, reuse In many cases, disinfection is sufficient for treatment.

0010 In this invention, wastewater such as bath wastewater and laundry rinse wastewater, which have a low level of contamination, can be used. collect them, measure their properties with a sensor, sort them according to their degree of contamination, and classify them according to their degree of pollution. Only wastewater is sent to the reuse treatment equipment, where it undergoes simple treatment and is reused as water for toilets, etc. use When treating domestic wastewater, etc. in this way, wastewater with a low degree of pollution is used. Furthermore, since the filter is sorted according to the degree of contamination, the degree of contamination is at a fairly low level before entering the treatment equipment. It has become a rule. Therefore, a simple processing method using a processing device is enough to provide a sufficiently good treatment. You can get clean water.

[0011] One aspect of this invention is that there are multiple emission sources, such as individual households or relatively small apartment complexes. Applicable when it can be treated separately and the degree of pollution is relatively low. The wastewater that is expected to be polluted is combined, and its properties are measured using sensors, etc., and the pollution level is determined. Only a small amount of wastewater is sent to the recycled water generation treatment equipment to obtain recycled water.

0012 Another aspect of the invention is that the emission source is a single source, such as industrial wastewater, or a relatively small source. Even if there are multiple sources of wastewater, such as in a small apartment complex, only the combined wastewater can be recycled. It is applied when the wastewater cannot be used, and the properties of the wastewater are measured with sensors, etc., and the pollution level is reduced. Only small wastewater is sent to the recycled water generation treatment equipment to obtain recycled water.

[0013]

【Example】

Figure 1 shows an example in which the wastewater reuse device of the present invention is applied to a house. In Figure 1 , the wastewater is transported along the flow path as shown by the solid arrow, and the wastewater is transported along the flow path as shown by the dotted arrow. A signal is sent to

[0014] A water collection device 110 collects wastewater with a generally low degree of pollution, such as bath wastewater 102 and laundry wastewater 104. to merge. In addition, other wastewater 106 that is considered to have a low level of pollution and the site Even if the drainage is combined from rainwater 108, such as when internal drainage is flowing into a combined sewer system, good.

[0015] The wastewater that has merged in the water collection device 110 is passed through a screen or the like provided in the flow path. Processed by device 112. The sieving device 112 detects a term that correlates with the degree of water pollution. This is to ensure that the lifespan of the sensor that measures the eyes is not significantly reduced. Therefore, a simple structure is sufficient.

[0016] The briefly treated wastewater is sent to the recycled water generation device 116 via the switching device 114. It will be done. Then, before the simply treated wastewater enters the switching device 14, the properties of the wastewater are checked. The sensor 115 measures the temperature. The sensor 115 switches the switching device 1 according to a predetermined setting value. 14, and the switching device 114 also sends a signal to the sensor 115. It is controlled by the output and switches the flow path according to the signal of the sensor 115. It has become. In other words, the degree of pollution of the wastewater passing through the sensor 115 is higher than the set value. If it is, the switching device 114 transfers the wastewater to the sewer or wastewater treatment device 124. If the pollution level of the wastewater is lower than the set value, the recycled water is generated. The flow path is switched to transfer to the device 116. Sewer or wastewater treatment equipment 12 The waste water that enters 4 is not reused.

[0017] The recycled water generation device 116 is a recycled water generation treatment device such as disinfection or slow sand filtration. . The water that has been treated in the recycled water generation device 116 and can be reused flows into the storage tank 1 along the flow path. 18 and stored there.

[0018] A pressurized water tank 120 is provided in the storage tank 118, and the pressurized water tank 120 supplies recycled water. The tank 118 is provided to obtain a sufficient head of water to Water is transferred to keep the water level in the pressurized water tank 120 constant. The water level in the storage tank 118 is It is detected by the level switch 121.

[0019] The flow path from the pressurized water tank 120 is connected to a reclaimed water supply port 122 of a toilet low tank or the like. It will be done. When reclaimed water is used in a toilet low tank, etc., it is collected from the pressurized water tank 120. A matching amount of reclaimed water is supplied.

[0020] The recycled water supply port 122 is also connected to the water supply 126 via an opening/closing device 128 such as an electric valve. It is connected. Therefore, the amount of recycled water used at the recycled water supply port 122 is large; The level switch 121 detects that the water level in the storage tank 118 has reached the lowest level. If the level switch 121 is activated, a signal is sent from the level switch 121 to the switchgear 128, and the switchgear 128 is activated, and tap water is supplied from the water supply 126 to the reclaimed water supply port 122. . Then, the signal was no longer sent from the level switch 121 to the switchgear 128. At this time, the opening/closing device 128 stops the supply of tap water from the water supply 126 to the water supply port 122. Ru.

[0021] The storage tank 118 is in communication with the purification treatment device 116, and the storage tank 118 and the purification treatment device 116 are connected to each other. Overflow wastewater from device 116 is transferred to a sewer or wastewater treatment facility 124 It is now possible to do so.

[0022] Additionally, the sewer or wastewater treatment equipment 124 receives wastewater 130 from other equipment. It has become so.

[0023] FIG. 2 shows an example in which the wastewater reuse device of the present invention is applied to a factory. In Figure 2 , the wastewater is transported along the flow path as shown by the solid arrow, and the wastewater is transported along the flow path as shown by the dotted arrow. A signal is sent to

[0024] The factory wastewater that has merged in the water collection device 10 is passed through a sieve such as a screen installed in the flow path. The wastewater that has been treated with the sieving device 12 is passed through the switching device 14 such as an electric valve. The recycled water is sent to the reclaimed water generating device 16 via.

[0025] The sieving device 12 includes a sensor 15 that measures items correlated with the degree of water pollution. Since the purpose of screening is to ensure that the lifespan of the Anything is fine.

[0026] Before the sifted wastewater enters the switching device 14, a sensor detects the properties of the wastewater. Measure at 15. Sensor 15 targets wastewater with a relatively wide range of pollution levels. Therefore, measurement of scattered light intensity is optimal. Measurement of scattered light intensity is performed on particles with a particle size larger than that of a colloid. When the amount of pollutants increases, the intensity of light scattered outside the optical path, that is, the scattered light intensity It takes advantage of the fact that . In addition to scattered light intensity, water such as absorbance and electrical conductivity It is also possible to measure items that correlate with the level of quality pollution.

[0027] The sensor 15 sends a signal to the switching device 14 according to a predetermined setting value. At the same time, the switching device 14 switches the flow path according to this signal. ing. In other words, if the degree of pollution of the wastewater passing through the sensor 15 is greater than the set value, If so, the switching device 14 will direct the wastewater to the sewer or wastewater treatment facility 24. If the pollution level of the wastewater is lower than the set value, the water is transferred to the reclaimed water generator 16. Switch the flow path to transfer. Therefore, the sensor 15 and the switching device 14 select the The device is configured.

[0028] The recycled water generation device 16 is a purification device such as disinfection or slow sand filtration. regenerated aquatic The water that has been treated in the storage device 16 and can be reused is sent to the storage tank 18 along the flow path. It can be stored there. The pressurized water tank 20 is used to obtain a water head sufficient for conveying reclaimed water. The reclaimed water is transferred from the storage tank 18 as needed, and the water in the pressurized water tank 20 is Keep the water level constant. The water level in the storage tank 18 is detected by a level switch 21.

[0029] The flow path from the pressurized water tank 20 is a recycled water supply port 22 for water for cleaning toilets, floors, etc., and for sprinkling water. connected to.

[0030] The recycled water supply port 22 is also connected to the water supply 26 via an opening/closing device 28 such as an electric valve. It is. Therefore, the amount of reclaimed water used in the water supply port 22 is large, and the amount of reclaimed water in the storage tank 18 is When the level switch 21 detects that the water level has reached the lowest level, the level A signal is sent from the switch 21 to the switch 28, which operates to open the water supply. Tap water is supplied from the device 26 to the reclaimed water supply port 22 . and level switch When the signal is no longer sent from 21 to the switchgear 28, the switchgear 28 6, the supply of tap water to the recycled water supply port 22 is stopped.

[0031] Conversely, the level switch 21 detects that the water level in the storage tank 18 has reached its highest level. If it is, a signal is sent from the level switch 21 to the switching device 14, and the The flow path is switched so that the wastewater is transferred to the wastewater treatment facility 24. At this time, the switching device 14 Now, make sure that the signal from level switch 21 overcomes the signal from sensor 15. Set. Therefore, if a signal is sent from the level switch 21 to the switching device 14, Regardless of the signal from the sensor 15, the switching device 14 The wastewater is transferred to the water treatment facility 24. Then, from the level switch 21 to the switching device 1 When the signal is no longer sent to sensor 4, the switching device 14 again switches on the signal from sensor 15. operate according to

[0032] In this embodiment, the switch is turned off according to the signal from the sensor 15 and the level switch 21. Although the switching device 14 is designed to switch the flow path, the reclaimed water generating device 16 and the pressurized water A level switch is provided in the tank 20, and the flow path is adjusted according to the signal from this level switch. You may also switch. As a result, the purification treatment equipment 16 and pressurized water tank 20 When the water level rises more than necessary, the wastewater is transferred to the sewer or wastewater treatment facility 24. The switching device 14 can switch the flow path so as to.

[0033] Note that the sensors 15 and 115 can change the switching criteria of the switching devices 14 and 114. In addition to making it possible to classify the pollution level into multiple stages, It is recommended to take backup measures to prevent chatter from the pollution level sensor. Yes.

[0034]

[Effect of the idea]

By using the device of the present invention, the following effects can be obtained.

[0035] 1. A considerable amount of the water used on the premises is covered by recycled water, so that amount is used as tap water. This will result in savings.

[0036] 2. The cost of obtaining reclaimed water is also reduced because it is clarified through simple treatment.

[0037] 3. Wastewater that is not reused is treated with wastewater treatment equipment on the premises, but only if the pollution level is low. Since wastewater is excluded, the water volume load is reduced, and the quality of treated water is improved and stabilized.

[Brief explanation of drawings]

FIG. 1 is a flowchart showing an embodiment of the present invention.

FIG. 2 is a flowchart showing another embodiment of the present invention.

[Explanation of symbols]

10 Factory wastewater 12 Sieving device 14 Switching device 15 Sensor 16 Recycled water generator 18 Storage tank 20 Pressurized water tank 21 Level switch 22 Reclaimed water supply port 24 Sewerage or wastewater treatment equipment 26 Water supply 28 Switchgear 102 Bath drainage 104 Laundry drainage 110 Water collection device 112 Sieving device 114 Switching device 115 sensor 116 Recycled water generator 118 Storage tank 120 Pressurized water tank 121 Level switch 122 Reclaimed water supply port 124 Sewerage or wastewater treatment equipment 126 Water supply 128 Switchgear

Claims (1)

[Scope of utility model registration request] Claim 1: Water collecting means for collecting wastewater from discharge sources that are likely to discharge wastewater with a low degree of pollution, measuring means for measuring the degree of pollution of the wastewater using a sensor, and means for collecting wastewater from sources that are likely to discharge wastewater with a low degree of pollution; A wastewater reuse device comprising a sorting means for sorting, and a reclaimed water generation means for purifying the sorted wastewater with a low degree of pollution for reuse.