CN111302567A - Evaporator of sewage biochemical treatment device - Google Patents
Evaporator of sewage biochemical treatment device Download PDFInfo
- Publication number
- CN111302567A CN111302567A CN202010163423.0A CN202010163423A CN111302567A CN 111302567 A CN111302567 A CN 111302567A CN 202010163423 A CN202010163423 A CN 202010163423A CN 111302567 A CN111302567 A CN 111302567A
- Authority
- CN
- China
- Prior art keywords
- sewage
- preheating
- water
- cavity
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/101—Sulfur compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/18—Cyanides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses an evaporator of a sewage biochemical treatment device, which comprises: a sewage filtering device; the sewage preheating device is used for preheating the sewage filtered by the sewage filtering device through steam; the heat exchanger is used for heating the preheated sewage to realize evaporation, concentration and crystallization, and steam evaporated from the sewage is introduced into the sewage preheating device as a heat source; the biochemical treatment tank is used for carrying out biochemical treatment on the concentrated sewage; the evaporator of the sewage biochemical treatment device has higher energy utilization rate, further greatly reduces the energy consumed in the sewage evaporation treatment process, and has compact structure and convenient use.
Description
Technical Field
The invention relates to the field of sewage treatment devices, in particular to an evaporator of a sewage biochemical treatment device.
Background
The sewage treatment is a process for purifying sewage to meet the water quality requirement of discharging the sewage into a certain water body or reusing the sewage; sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and is increasingly used in daily life of common people.
In the process of sewage treatment, an evaporator is usually adopted to treat sewage by utilizing the principle of evaporation, concentration and recrystallization; the traditional evaporator is simple in structure, when sewage is preheated, heat loss is serious, resource waste is caused, and preheating efficiency is reduced.
In order to solve the above problems, an evaporator for a biochemical sewage treatment apparatus having high energy utilization efficiency is required.
Disclosure of Invention
In view of the above, the present invention provides an evaporator for a biochemical sewage treatment device, which has high energy utilization efficiency and greatly improves energy saving effect.
The sewage biochemical treatment device evaporator of the invention comprises:
a sewage filtering device; the sewage filtering device can adopt all forms of filter structures in the prior art; the sewage filtering device is used for filtering solid impurities in sewage;
the sewage preheating device is used for preheating the sewage filtered by the sewage filtering device through steam; the sewage preheating device preheats the sewage by taking the steam as a heat source; the steam is generated by the evaporation of the sewage in the heat exchanger; therefore, the recycling of the steam heat energy generated by the evaporator is realized through the sewage preheating device, so that the utilization rate of the energy is improved;
the heat exchanger is used for heating the preheated sewage to realize evaporation, concentration and crystallization, and steam evaporated from the sewage is introduced into the sewage preheating device as a heat source; the heat exchanger can adopt the existing heat exchanger structure; the heat exchanger heats the sewage by using steam as a heat source, so that the sewage is evaporated, concentrated and crystallized; discharging the concentrated solution after the concentration into a biochemical treatment tank;
and the biochemical treatment tank is used for performing biochemical treatment on the concentrated sewage, and the biochemical treatment method is simply called biological treatment method or biochemical method. The treatment process of the method is a sewage treatment method which mixes and contacts the waste water or the solid waste with microorganisms, decomposes organic matters and certain inorganic poisons (such as cyanides, sulfides and the like) in the waste water by utilizing the biochemical action in the microorganisms and converts unstable organic matters and inorganic poisons into nontoxic substances; the biochemical treatment tank can adopt the prior structure.
Preferably, the sewage filtering device comprises a tank body and a filter element assembly positioned in the tank body; the tank body is provided with a water inlet, a water outlet, an exhaust hole and a sewage outlet, and a partition plate is arranged in the tank body and divides the inner cavity of the tank body into an upper cavity and a lower cavity through the partition plate; a plurality of mounting holes are uniformly distributed on the partition plate along the ring shape; the filter element assembly comprises filter elements fixedly arranged in the mounting holes and a filter element fixing plate used for fixedly connecting the upper ends of the filter elements with each other; an n-shaped water baffle is arranged in the tank body corresponding to the water inlet, sewage is guided to be left along the inner wall of the tank body through the water baffle, an exhaust hole is formed in the top of the tank body, the water inlet is communicated with the upper cavity, and a water outlet is communicated with the lower cavity; the sewage draining outlet is communicated with the upper cavity and is positioned at the bottom of the lower cavity; the sewage entering the upper cavity through the water inlet can only enter the lower cavity through the filter element, and then the filtration of the sewage is realized through the filter element.
Preferably, the sewage filtering device further comprises a reverse cleaning device; the reverse cleaning device comprises a differential pressure transmitter for monitoring the pressure difference between the water inlet and the water outlet, a cleaning water pump for pressing cleaning water into the water outlet and a cleaning controller for receiving a signal sent by the differential pressure transmitter and controlling the cleaning water pump to work; when the filter works, sewage to be filtered flows in from the water inlet and is filtered by the filter element, and due to the blockage of impurities, the filter holes of the filter element become smaller and smaller, so that pressure difference is generated between the water inlet and the water outlet, a pressure difference value is acquired by the pressure difference transmitter, the larger the pressure difference value is when the filter holes are blocked, when the pressure difference reaches a set threshold value, the controller controls the cleaning water pump to be started, the filter element is reversely flushed by cleaning water, and then the controller controls the electromagnetic valve at the sewage discharge port to be started to discharge sewage; the water outlet is respectively connected with the inlet of the preheating device and the outlet of the water pump through two branch paths; the opening and closing of the branches are controlled by arranging the electromagnetic valves in the two branches, and the opening and the closing of the two electromagnetic valves are controlled by the controller.
Preferably, the sewage preheating device comprises a preheating shell, a preheating pipe and a water distribution plate; the preheating shell is provided with a preheating water inlet and a preheating water outlet; the preheating water inlet is communicated with a water outlet of the sewage filtering device through a pipeline; the preheating pipe and the water distribution plate are arranged in the preheating shell in the shape of an Archimedes spiral line; the inner cavity of the preheating shell is separated by the water distribution plate to form a spiral flow passage; when the device works, steam flows into the preheating pipe, and sewage flows in the spiral flow passage and is heated by the preheating pipe; the spiral flow channel can greatly improve the stroke of sewage flowing through the preheating device, and greatly improve the preheating effect.
Preferably, the heat exchanger comprises a shell, a tube box assembly and a U-shaped heat exchange tube group; the shell is provided with a sewage inlet and a sewage outlet, and the upper part of the shell is upwards bulged to form an evaporation cavity; the outer wall of the evaporation cavity is provided with a steam outlet which is connected with a preheating pipe of the sewage preheating device through a pipeline; the tube box assembly comprises a closed end cover body and a middle partition plate, wherein the closed end cover body is used for being fixed with the end part of the shell, and the middle partition plate is fixed in an inner cavity of the end cover body and used for dividing the inner cavity of the end cover body into an air inlet cavity and an air exhaust cavity; the U-shaped heat exchange tube group comprises a plurality of U-shaped tubes arranged on the end face of the end cover body; two ends of the U-shaped pipe are respectively communicated with the air inlet cavity and the air exhaust cavity; a plurality of separating discs sleeved outside the U-shaped pipes are distributed on the shell at intervals along the longitudinal direction, and water through holes are formed in the separating discs; the separating disc divides the inner cavity of the shell into a plurality of cavities; sewage flows into the cavity at one end through the sewage inlet, and flows out of the sewage outlet after entering the adjacent cavity and grouting to fill each cavity after the sewage passes through the through hole; steam generated by the boiler enters the air inlet cavity through the air inlet, and flows into the exhaust cavity through the U-shaped pipes; the exhaust cavity is connected with a preheating pipe of the preheating device through a pipeline.
The invention has the beneficial effects that: the evaporator of the sewage biochemical treatment device has higher energy utilization rate, thereby greatly reducing the energy consumed in the sewage evaporation treatment process.
Drawings
The invention is further described below with reference to the figures and examples.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view showing the construction of the sewage filtering apparatus of the present invention;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a schematic view showing the arrangement of the preheating pipe of the sewage preheating apparatus of the present invention;
FIG. 5 is a schematic structural view of a heat exchanger according to the present invention;
fig. 6 is a cross-sectional view of a heat exchanger of the present invention.
Detailed Description
Fig. 1 is a schematic structural diagram of the present invention, and as shown in the drawing, the evaporator of the sewage biochemical treatment device of the present embodiment includes:
the sewage filtering device 3 comprises a tank 32 and a filter element 34 assembly positioned in the tank 32; the tank body 32 is provided with a water inlet 31, a water outlet 36, an exhaust hole and a sewage outlet 35, and a clapboard is arranged in the tank body 32 and divides the inner cavity of the tank body 32 into an upper cavity and a lower cavity through the clapboard; a plurality of mounting holes are uniformly distributed on the partition plate along the ring shape; the filter element 34 assembly comprises filter elements 34 fixedly arranged in the mounting holes and a filter element 34 fixing plate 33 used for fixedly connecting the upper ends of the filter elements 34 with each other; an n-shaped water baffle is arranged in the tank body 32 corresponding to the water inlet 31, sewage is guided to be left along the inner wall of the tank body 32 through the water baffle, an exhaust hole is formed in the top of the tank body 32, the water inlet 31 is communicated with the upper cavity, and a water outlet 36 is communicated with the lower cavity; the drain outlet 35 is communicated with the upper cavity and is positioned at the bottom of the lower cavity; the sewage entering the upper cavity through the water inlet 31 can only enter the lower cavity through the filter element 34, and then the filtering of the sewage is realized through the filter element 34;
the sewage filtering device 3 also comprises a reverse cleaning device; the reverse cleaning device comprises a differential pressure transmitter for monitoring the pressure difference between the water inlet 31 and the water outlet 36, a cleaning water pump 1 for pressing cleaning water into the water outlet 36 and a cleaning controller for receiving a signal sent by the differential pressure transmitter and controlling the cleaning water pump 1 to work; when the filter works, sewage to be filtered flows in from the water inlet 31 and is filtered by the filter element 34, and due to the blockage of impurities, the filter hole of the filter element 34 is smaller and smaller, so that pressure difference is generated between the water inlet 31 and the water outlet 36, a pressure difference value is acquired by the pressure difference transmitter, the larger the pressure difference value is when the filter hole is blocked, when the pressure difference reaches a set threshold value, the controller controls the cleaning water pump 1 to be started to reversely flush the filter element 34 by using cleaning water, and then controls the electromagnetic valve at the sewage discharge port 35 to be opened to discharge sewage; the water outlet 36 is respectively connected with the inlet of the preheating device 2 and the outlet of the water pump 1 through two branch paths; the opening and closing of the branches are controlled by arranging the electromagnetic valves in the two branches, and the opening and the closing of the two electromagnetic valves are controlled by the controller.
The sewage preheating device 2 comprises a preheating shell 21, a preheating pipe 22 and a water distribution plate; the preheating shell 21 is provided with a preheating water inlet and a preheating water outlet; the preheating water inlet is communicated with a water outlet of the sewage filtering device 3 through a pipeline; the preheating pipe 22 and the water diversion plate are both placed in the preheating shell 21 in the form of an archimedes spiral (the water diversion plate is not shown in fig. 4); the inner cavity of the preheating shell 21 is separated by the water distribution plate to form a spiral flow channel; during operation, steam flows into the preheating pipe 22, and sewage flows in the spiral flow channel and is heated by the preheating pipe 22; the spiral runner can greatly improve the stroke of sewage flowing through the preheating device 2, and greatly improve the preheating effect.
The heat exchanger 4 comprises a shell, a pipe box assembly and a U-shaped heat exchange pipe set; the shell is provided with a sewage inlet and a sewage outlet, and the upper part of the shell is upwards bulged to form an evaporation cavity 46; the outer wall of the evaporation cavity 46 is provided with a steam outlet which is connected with a preheating pipe of the sewage preheating device 2 through a pipeline; the tube box assembly comprises a closed end cover body and a middle partition plate, wherein the closed end cover body is used for being fixed with the end part of the shell, and the middle partition plate is fixed in an inner cavity of the end cover body and used for dividing the inner cavity of the end cover body into an air inlet cavity 42 and an air exhaust cavity 43; the U-shaped heat exchange tube group comprises a plurality of U-shaped tubes arranged on the end face of the end cover body; two ends of the U-shaped pipe are respectively communicated with the air inlet cavity 42 and the air exhaust cavity 43; a plurality of separating discs 45 sleeved outside the U-shaped pipes are distributed on the shell at intervals along the longitudinal direction, and water through holes 47 are formed in the separating discs 45; the separating disc 45 divides the inner cavity of the shell into a plurality of cavities; sewage flows into the cavity at one end through the sewage inlet, and flows out of the sewage outlet after entering the adjacent cavity and grouting to fill each cavity after the sewage passes through the through hole; steam generated by the boiler enters the air inlet chamber 42 through the air inlet 41, and flows into the exhaust chamber 43 through each U-shaped pipe; the exhaust port 44 is connected to the preheating pipe of the preheating device 2 through a pipe.
And a biochemical treatment tank 5 for performing biochemical treatment on the concentrated sewage, wherein the biochemical treatment method is simply called biological treatment method or biochemical method. The treatment process of the method is a sewage treatment method which mixes and contacts the waste water or the solid waste with microorganisms, decomposes organic matters and certain inorganic poisons (such as cyanides, sulfides and the like) in the waste water by utilizing the biochemical action in the microorganisms and converts unstable organic matters and inorganic poisons into nontoxic substances; the biochemical treatment tank can adopt the prior structure.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (5)
1. An evaporator of a sewage biochemical treatment device, comprising:
a sewage filtering device;
the sewage preheating device is used for preheating the sewage filtered by the sewage filtering device through steam;
the heat exchanger is used for heating the preheated sewage to realize evaporation, concentration and crystallization, and steam evaporated from the sewage is introduced into the sewage preheating device as a heat source;
and the biochemical treatment tank is used for performing biochemical treatment on the concentrated sewage.
2. The sewage biochemical treatment device evaporator according to claim 1, characterized in that: the sewage filtering device comprises a tank body and a filter element assembly positioned in the tank body; the tank body is provided with a water inlet, a water outlet, an exhaust hole and a sewage outlet, and a partition plate is arranged in the tank body and divides the inner cavity of the tank body into an upper cavity and a lower cavity through the partition plate; a plurality of mounting holes are uniformly distributed on the partition plate along the ring shape; the filter element assembly comprises filter elements fixedly arranged in the mounting holes and a filter element fixing plate used for fixedly connecting the upper ends of the filter elements with each other; an n-shaped water baffle is arranged at the position, corresponding to the water inlet, in the tank body.
3. The sewage biochemical treatment device evaporator according to claim 2, characterized in that: the sewage filtering device also comprises a reverse cleaning device; the reverse cleaning device comprises a differential pressure transmitter for monitoring the pressure difference between the water inlet and the water outlet, a cleaning water pump for pressing cleaning water into the water outlet, and a cleaning controller for receiving a signal sent by the differential pressure transmitter and controlling the cleaning water pump to work.
4. The sewage biochemical treatment device evaporator according to claim 3, characterized in that: the sewage preheating device comprises a preheating shell, a preheating pipe and a water distribution plate; the preheating shell is provided with a preheating water inlet and a preheating water outlet; the preheating water inlet is communicated with a water outlet of the sewage filtering device through a pipeline; the preheating pipe and the water distribution plate are arranged in the preheating shell in the shape of an Archimedes spiral line; the inner cavity of the preheating shell is separated by the water distribution plate to form a spiral flow passage.
5. The sewage biochemical treatment device evaporator according to claim 4, wherein: the heat exchanger comprises a shell, a pipe box assembly and a U-shaped heat exchange pipe set; the shell is provided with a sewage inlet and a sewage outlet, and the upper part of the shell is upwards bulged to form an evaporation cavity; the outer wall of the evaporation cavity is provided with a steam outlet which is connected with a preheating pipe of the sewage preheating device through a pipeline; the tube box assembly comprises a closed end cover body and a middle partition plate, wherein the closed end cover body is used for being fixed with the end part of the shell, and the middle partition plate is fixed in an inner cavity of the end cover body and used for dividing the inner cavity of the end cover body into an air inlet cavity and an air exhaust cavity; the U-shaped heat exchange tube group comprises a plurality of U-shaped tubes arranged on the end face of the end cover body; two ends of the U-shaped pipe are respectively communicated with the air inlet cavity and the air exhaust cavity; the shell is longitudinally and alternately distributed with a plurality of separating discs sleeved outside the U-shaped tubes, and water holes are formed in the separating discs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010163423.0A CN111302567A (en) | 2020-03-10 | 2020-03-10 | Evaporator of sewage biochemical treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010163423.0A CN111302567A (en) | 2020-03-10 | 2020-03-10 | Evaporator of sewage biochemical treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111302567A true CN111302567A (en) | 2020-06-19 |
Family
ID=71158636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010163423.0A Pending CN111302567A (en) | 2020-03-10 | 2020-03-10 | Evaporator of sewage biochemical treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111302567A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2116185U (en) * | 1992-03-09 | 1992-09-16 | 济南市热管应用技术研究所实验厂 | Spiral low-temperature heat exchanger |
| US20100181185A1 (en) * | 2007-06-22 | 2010-07-22 | Desalination Technology Pty Ltd | Desalination |
| CN105084651A (en) * | 2015-07-28 | 2015-11-25 | 山西诺凯化工技术有限公司 | Purification treatment and pure-salt recovery process for strong-salt wastewater in coal chemical industry |
| CN107324578A (en) * | 2017-08-18 | 2017-11-07 | 武汉凯迪水务有限公司 | A kind of shale gas produced water treatment system and method |
| CN107321030A (en) * | 2017-07-22 | 2017-11-07 | 钱克韦 | A kind of ocean fishing vessel water processing system and processing method |
| CN209302202U (en) * | 2018-12-24 | 2019-08-27 | 北京赛博宇科技发展有限公司 | A kind of liquid ammonia evaporator for being easily installed and safeguarding |
-
2020
- 2020-03-10 CN CN202010163423.0A patent/CN111302567A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2116185U (en) * | 1992-03-09 | 1992-09-16 | 济南市热管应用技术研究所实验厂 | Spiral low-temperature heat exchanger |
| US20100181185A1 (en) * | 2007-06-22 | 2010-07-22 | Desalination Technology Pty Ltd | Desalination |
| CN105084651A (en) * | 2015-07-28 | 2015-11-25 | 山西诺凯化工技术有限公司 | Purification treatment and pure-salt recovery process for strong-salt wastewater in coal chemical industry |
| CN107321030A (en) * | 2017-07-22 | 2017-11-07 | 钱克韦 | A kind of ocean fishing vessel water processing system and processing method |
| CN107324578A (en) * | 2017-08-18 | 2017-11-07 | 武汉凯迪水务有限公司 | A kind of shale gas produced water treatment system and method |
| CN209302202U (en) * | 2018-12-24 | 2019-08-27 | 北京赛博宇科技发展有限公司 | A kind of liquid ammonia evaporator for being easily installed and safeguarding |
Non-Patent Citations (1)
| Title |
|---|
| 张明: "《煤制合成天然气技术与应用》", 31 October 2017, 化学工业出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2019153519A1 (en) | Intelligently controlled anti-blockage artificial wetland rain and sewage enhanced treatment system and method based on solar power | |
| CN102390887A (en) | Flap aerated biological filter and wastewater treatment method thereof | |
| CN105536276A (en) | MVR (Mechanical Vapor Recompression) multi-level evaporation device | |
| CN102518184A (en) | Bathing hot water comprehensive recycling device | |
| CN104291519B (en) | Integrated life sewage treatment plant | |
| CN111302567A (en) | Evaporator of sewage biochemical treatment device | |
| CN111156851A (en) | Condensate water waste heat recovery system of still kettle | |
| CN108716240A (en) | Ecological intelligence zero-emission toilet | |
| CN219058593U (en) | High-thermal-conductivity waste water evaporator | |
| CN2611493Y (en) | Automatic water treatment appts. of swiming pool | |
| CN209234690U (en) | A kind of concealed circulating filtration fish jar | |
| CN214528567U (en) | Combined filter chamber of upward flow active carbon filter chamber and sand filter chamber arranged in line | |
| CN100425548C (en) | Non-blocking aeration biological filter | |
| CN212374982U (en) | Hydrolytic acidification and biological reaction combined treatment tank with surpassing function | |
| CN201145495Y (en) | Heat exchanger for waste water residual heat | |
| CN210438483U (en) | Water distribution device for wastewater treatment | |
| CN211770877U (en) | A mark septic tank | |
| CN208733755U (en) | Ecological intelligence zero-emission toilet | |
| CN211920926U (en) | Evaporator for water treatment and purification | |
| CN111762870A (en) | Hydrolytic acidification and biological reaction combined treatment tank with surpassing function | |
| CN206479076U (en) | One kind vortex dirt eliminating sewage heat exchanger | |
| CN219736039U (en) | Reinforced pollution discharge cooling pond capable of realizing heat recovery | |
| CN205398217U (en) | Simple and easy membrane bioreactor | |
| CN211903873U (en) | Condensate water waste heat recovery system of still kettle | |
| CN208776516U (en) | A kind of environment-protection wastewater waste gas treatment device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200619 |