CN106630295B - Sewage treatment process - Google Patents
Sewage treatment process Download PDFInfo
- Publication number
- CN106630295B CN106630295B CN201710023697.8A CN201710023697A CN106630295B CN 106630295 B CN106630295 B CN 106630295B CN 201710023697 A CN201710023697 A CN 201710023697A CN 106630295 B CN106630295 B CN 106630295B
- Authority
- CN
- China
- Prior art keywords
- water
- sewage
- enters
- tank
- treatment process
- 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.)
- Active
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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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)
- Separation Using Semi-Permeable Membranes (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a sewage treatment process, which comprises the following steps: a. a new water treatment process; b. a sewage treatment process; c. a concentrated water treatment process; d. a waste treatment process; the continuous and efficient operation of the reverse osmosis system is ensured mainly by improving or increasing the process, and the water yield and the recovery rate of the sewage are greatly improved. The ultrafiltration process is added in the sewage treatment process, so that the problems of dirt blockage and low recovery rate of reverse osmosis are solved; a weak acid bed process is added in a concentrated water treatment system, the scaling problem of reverse osmosis of concentrated water is solved, and through the innovative reconstruction of the process, the sewage recovery rate is improved from 70% to 90%; the residual 10 percent of concentrated water is subjected to iron making and slag flushing in a steel plant, so that the problem of sewage discharge is solved, zero sewage discharge is realized, water resources are saved, and the environment is protected.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a sewage treatment process which can obviously improve the sewage recovery rate and can continuously and efficiently operate.
Background
The sewage treatment is a process for purifying sewage to meet the water quality requirement of a certain water body or reuse. 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 the sewage treatment also increasingly enters the daily life of common people, and the treatment of comprehensive sewage is troublesome due to more elements.
The core desalting equipment of the sewage treatment plant is a reverse osmosis device, and the previous pretreatment processes provide guarantee for reverse osmosis. After the reverse osmosis membrane is put into use, the reverse osmosis membrane is polluted by impurities in water, and because water quality of water sources in various places is different, the adopted pretreatment process is different, so that pollutants of the reverse osmosis membrane are different, and the speed difference of the sewage blockage is large. Since there is often more than one contaminant in the wastewater, they interact, accelerating the rate of fouling and the complexity of the fouling. And traditional reverse osmosis membrane assembles with the help of reverse osmosis membrane shell, can't detect the product water quality condition of arbitrary a rete alone, and when reverse osmosis washs in addition, need unify the washing, leads to reverse osmosis membrane forced shutdown, influences sewage process flow and handles. Even if the reverse osmosis membrane normally operates, the reverse osmosis membrane is quick in fouling and blocking, frequent in cleaning, and needs to be cleaned once in one month in the longest operation period, which is ten days shorter. How to ensure that the reverse osmosis can be operated continuously and efficiently for a long time is a key factor for determining the sewage yield and the recovery rate.
The ultrafiltration is widely adopted in the current wastewater treatment system for treating the sewage, the microfiltration technology is used for improving the recovery rate of the sewage treatment, the recovery rate of the sewage treatment is generally difficult to reach 90 percent, so that not only is the waste of water resources caused, but also certain pollution is caused to the surrounding environment due to the direct discharge of the sewage.
Therefore, it is necessary to design a treatment system which ensures continuous and efficient operation of sewage treatment and high recovery rate.
Disclosure of Invention
In order to solve the problems, the invention provides a sewage treatment process for improving the sewage recovery rate, wherein an ultrafiltration treatment process is added in a treatment process, so that the effect of sewage pretreatment is ensured to completely meet the requirement of reverse osmosis on the quality of inlet water, a weak acid bed process is added, easily-scaling components in concentrated water are removed, the normal, stable and efficient operation of a system can be ensured, the service life of a reverse osmosis membrane is prolonged, the sewage recovery rate is improved, the zero discharge of sewage is realized, and the environment protection is facilitated.
A sewage treatment process comprises the following steps:
a. new water treatment process
Water enters a new water regulating tank from a reservoir, enters a new water high-density tank through a new water lifting pump, then enters a new water V-shaped tank by utilizing a potential difference for filtering, then enters a new water intermediate tank, enters a multi-media filter I through a new water delivery pump, then enters a security filter I, enters a new water reverse osmosis device after being heated by a heat exchanger and pressurized by a high-pressure pump, then enters a low-salt water tank, is pressurized by a low-salt water pump and then is sent to a low-salt water pipe network; strong brine of the fresh water reverse osmosis device enters a sewage intermediate tank;
b. process for treating waste water
Sewage in the sewage adjusting tank enters a sewage high-density tank through a sewage lifting pump; then the sewage enters a sewage V-shaped tank for filtration by utilizing the potential difference, then enters a sewage intermediate tank, enters a multi-media filter II through a sewage delivery pump, enters a sewage ultrafiltration device by being heated by a heat exchanger, then enters the sewage intermediate tank, is sent to a security filter II through an intermediate water pump, enters a sewage reverse osmosis device after being pressurized by a high-pressure pump, then enters a low-salt water tank, is sent to a low-salt water pipe network after being pressurized by a low-salt water pump; strong brine of the sewage reverse osmosis device enters a concentrated water high-density tank;
c. concentrated water treatment process
Concentrated water of the sewage reverse osmosis device enters a concentrated water high-density tank through a concentrated water dosing pump; then the concentrated water enters a concentrated water V-shaped pool by utilizing the potential difference for filtration; then the concentrated water intermediate tank enters a multi-media filter III through a concentrated water delivery pump, then enters a weak acid bed for calcium removal and magnesium ions, finally enters a concentrated water intermediate tank, enters a cartridge filter III through an intermediate water pump, enters a concentrated water reverse osmosis device after being pressurized through a high-pressure pump, and effluent enters a low-salt water tank and is sent to a low-salt water pipe network after being pressurized through a low-salt water pump;
d. waste treatment process
The concentrated water of the concentrated water reverse osmosis device is pressurized by a high-pressure pump and then is sent to a slag flushing water pipe network for slag flushing; and the sludge generated in the fresh water high-density tank, the sewage high-density tank and the concentrated water high-density tank enters a sludge tank, is conveyed to a plate-and-frame filter press by a sludge pump and then is conveyed to a sludge field.
Furthermore, the new water lift pump is a dosing pump, and flocculating agents of polyaluminium chloride and polyacrylamide are added.
Further, the volume of the new water high-density pool is 500m3And the effluent turbidity of the new water high-density pond is less than 10 mg/L.
Furthermore, the turbidity of the effluent of the new water V-shaped pool is less than 3 mg/L.
Furthermore, the sewage lifting pump is a chemical dosing pump, and flocculating agent polyaluminium chloride and coagulant aid polyacrylamide are added.
Further, theThe volume of the sewage high-density tank is 1000m3And the effluent turbidity of the sewage high-density tank is below 10 mg/L.
Furthermore, the effluent turbidity of the sewage V-shaped pool is less than 3 mg/L.
Furthermore, a flocculant polyaluminium chloride and a coagulant aid polyacrylamide are added into the concentrated water dosing pump.
Furthermore, the volume of the concentrated water high-density tank is 500m3And the effluent turbidity of the high-density concentrated water tank is less than 10 mg/L.
Furthermore, the effluent turbidity of the concentrated water V-shaped pool is less than 3 mg/L.
Advantageous effects
The invention provides a sewage treatment process for improving the recovery rate of sewage, which comprises a new water treatment process; b. a sewage treatment process; c. a concentrated water treatment process; d. a waste treatment process; the continuous and efficient operation of the reverse osmosis system is ensured mainly by improving or increasing the process, and the sewage yield and the recovery rate are greatly improved.
An ultrafiltration treatment process is added in the sewage treatment process, so that the effect of sewage pretreatment is ensured to completely meet the requirement of reverse osmosis on the quality of inlet water, the yield is stabilized, and the recovery rate is improved by about 10 percent; a weak acid bed process is added in the concentrated water treatment process, most of scale-prone components such as calcium ions, magnesium ions and the like in the concentrated water are removed, the reverse osmosis is ensured to be about pH 11, and the recovery rate is improved by about 20% while continuous and efficient operation is realized; through the process innovation, the sewage recovery rate is improved from 70% to 90%. And finally, a small amount of residual concentrated water after sewage treatment is sent to a steel plant and an iron plant for slag flushing, so that the problem of sewage discharge is solved, water resources are saved, the environment is protected, zero discharge of sewage is realized, and the full utilization of energy is realized.
Drawings
FIG. 1 is a process flow diagram of a wastewater treatment process.
Detailed Description
For the purpose of enhancing the understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and examples, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.
As shown in FIG. 1, the present invention relates to a sewage treatment process, comprising the steps of:
a. new water treatment process
The water enters a new water regulating tank from a reservoir, flocculant polyaluminium chloride and coagulant aid polyacrylamide are added through a new water lift pump, and then the new water added with the auxiliary agent is fed into a water tank with the volume of 500m3The fresh water high-density pool is further treated in the fresh water high-density pool to improve the water quality, the turbidity of outlet water is reduced to be below 10mg/L, the outlet water uniformly enters a fresh water V-shaped pool for filtration by means of potential difference, the turbidity is reduced to be below 3mg/L after residual filter residues are removed by the filter pool, the outlet water is converged into a fresh water intermediate pool, enters a multi-medium filter I through a fresh water delivery pump to reduce the turbidity again, then enters a cartridge filter I, the outlet water of the cartridge filter I enters a high-pressure pump after being heated by a heat exchanger, enters a fresh water reverse osmosis device after being pressurized, then enters a low-salt water pool, and is sent to a low-salt water pipe network after being pressurized by a low-salt water pump; the concentrated brine flows to a sewage intermediate tank;
b. process for treating waste water
Sewage enters a sewage adjusting tank from a pipe network, flocculant polyaluminium chloride and coagulant aid polyacrylamide are added into the sewage adjusting tank through a sewage lifting pump, and then the sewage enters 1000m3The sewage high-density tank is further treated in the sewage high-density tank to improve the water quality, the turbidity of the outlet water is reduced to be below 10mg/L, the outlet water uniformly enters a sewage V-shaped tank for filtration by means of potential difference, and after residual residues are removed by a filter tank, the turbidity is reduced to be below 3mg/L and then the outlet water is converged into a sewage intermediate tank; the effluent of the ultrafiltration device enters a sewage intermediate tank, the water is sent to a security filter II through an intermediate water pump, then enters a sewage reverse osmosis device after being pressurized by a high-pressure pump, then enters a low-salt water tank, and is sent to the sewage intermediate tank after being pressurized by a low-salt water pumpA low salt water piping network; the concentrated brine flows to a concentrated brine high-density tank;
c. concentrated water treatment process
The concentrated water of the sewage reverse osmosis device is added with flocculant polyaluminium chloride, coagulant aids polyacrylamide and caustic soda through a dosing pump and then enters 500m3The concentrated water high-density tank is further treated in the concentrated water high-density tank to reduce total hardness and improve water quality, the turbidity of outlet water is reduced to be below 10mg/L, the outlet water uniformly enters a concentrated water V-shaped tank for filtration by potential difference, and after residual filter residues are removed by a filter tank, the turbidity is reduced to be below 3mg/L and then the outlet water is converged into a concentrated water intermediate tank; then enters a multi-media filter III through a concentrated water delivery pump, then enters a weak acid bed for calcium removal, the weak acid bed can effectively solve the scaling problem of the reverse osmosis of the concentrated water, finally enters a concentrated water intermediate pool III, water is delivered to a security filter III through an intermediate water pump, then enters a sewage reverse osmosis device after being pressurized through a high-pressure pump, and the effluent enters a low-salt water pool and is delivered to a low-salt water pipe network after being pressurized through a low-salt water pump;
d. waste treatment process
The concentrated water of the concentrated water reverse osmosis device is pressurized by a high-pressure pump and then is sent to a slag flushing water pipe network for slag flushing; and the sludge generated in the fresh water high-density tank, the sewage high-density tank and the concentrated water high-density tank enters a sludge tank, is conveyed to a plate-and-frame filter press by a sludge pump and then is conveyed to a sludge field.
The invention relates to a sewage treatment process, which comprises the following steps: a. a new water treatment process; b. a sewage treatment process; c. a concentrated water treatment process; d. a waste treatment process; the continuous and efficient operation of the reverse osmosis system is ensured mainly by improving or increasing the process, and the sewage yield and the recovery rate are greatly improved. The ultrafiltration process is added in the sewage treatment process, so that the problems of dirt blockage and low recovery rate of reverse osmosis are solved; the process of adding the weak acid bed in the concentrated water treatment system solves the scaling problem of the reverse osmosis of the concentrated water, and through the innovative reconstruction of the process, the sewage recovery rate is improved from the original 70 percent to 90 percent. The remaining 10 percent of the concentrated water is subjected to iron making and slag flushing in a steel plant, so that the problem of sewage discharge is solved, water resources are saved, and the environment is protected.
Claims (10)
1. A sewage treatment process is characterized in that: comprises the following steps of (a) carrying out,
a. new water treatment process
Water enters a new water regulating tank from a reservoir, enters a new water high-density tank through a new water lifting pump, then enters a new water V-shaped tank by utilizing a potential difference for filtering, then enters a new water intermediate tank, enters a multi-media filter I through a new water delivery pump, then enters a security filter I, enters a new water reverse osmosis device after being heated by a heat exchanger and pressurized by a high-pressure pump, then enters a low-salt water tank, is pressurized by a low-salt water pump and then is sent to a low-salt water pipe network; strong brine of the fresh water reverse osmosis device enters a sewage intermediate tank;
b. process for treating waste water
Sewage in the sewage adjusting tank enters a sewage high-density tank through a sewage lifting pump; then the sewage enters a sewage V-shaped tank for filtration by utilizing the potential difference, then enters a sewage intermediate tank, enters a multi-media filter II through a sewage delivery pump, enters a sewage ultrafiltration device by being heated by a heat exchanger, then enters the sewage intermediate tank, is sent to a security filter II through an intermediate water pump, enters a sewage reverse osmosis device after being pressurized by a high-pressure pump, then enters a low-salt water tank, is sent to a low-salt water pipe network after being pressurized by a low-salt water pump; strong brine of the sewage reverse osmosis device enters a concentrated water high-density tank;
c. concentrated water treatment process
Concentrated water of the sewage reverse osmosis device enters a concentrated water high-density tank through a concentrated water dosing pump; then the concentrated water enters a concentrated water V-shaped pool by utilizing the potential difference for filtration; then the concentrated water intermediate tank enters a multi-media filter III through a concentrated water delivery pump, then enters a weak acid bed for calcium removal and magnesium ions, finally enters a concentrated water intermediate tank, enters a cartridge filter III through an intermediate water pump, enters a concentrated water reverse osmosis device after being pressurized through a high-pressure pump, and effluent enters a low-salt water tank and is sent to a low-salt water pipe network after being pressurized through a low-salt water pump;
d. waste treatment process
The concentrated water of the concentrated water reverse osmosis device is pressurized by a high-pressure pump and then is sent to a slag flushing water pipe network for slag flushing; and the sludge generated in the fresh water high-density tank, the sewage high-density tank and the concentrated water high-density tank enters a sludge tank, is conveyed to a plate-and-frame filter press by a sludge pump and then is conveyed to a sludge field.
2. The wastewater treatment process according to claim 1, characterized in that: the new water lift pump is a chemical dosing pump, and flocculant polyaluminium chloride and coagulant aid polyacrylamide are added.
3. The wastewater treatment process according to claim 1, characterized in that: the volume of the new water high-density tank is 500m3And the effluent turbidity of the new water high-density pond is less than 10 mg/L.
4. The wastewater treatment process according to claim 1, characterized in that: the effluent turbidity of the new water V-shaped pool is less than 3 mg/L.
5. The wastewater treatment process according to claim 1, characterized in that: the sewage lifting pump is a chemical dosing pump, and flocculating agent polyaluminium chloride and coagulant aid polyacrylamide are added.
6. The wastewater treatment process according to claim 1, characterized in that: the volume of the sewage high-density tank is 1000m3And the effluent turbidity of the sewage high-density tank is below 10 mg/L.
7. The wastewater treatment process according to claim 1, characterized in that: the effluent turbidity of the sewage V-shaped tank is below 3 mg/L.
8. The wastewater treatment process according to claim 1, characterized in that: and a flocculant polyaluminium chloride and a coagulant aid polyacrylamide are added into the concentrated water dosing pump.
9. The wastewater treatment process according to claim 1, characterized in that: the volume of the concentrated water high-density tank is 500m3And the effluent turbidity of the high-density concentrated water tank is less than 10 mg/L.
10. The wastewater treatment process according to claim 1, characterized in that: the effluent turbidity of the concentrated water V-shaped tank is less than 3 mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710023697.8A CN106630295B (en) | 2017-01-06 | 2017-01-06 | Sewage treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710023697.8A CN106630295B (en) | 2017-01-06 | 2017-01-06 | Sewage treatment process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106630295A CN106630295A (en) | 2017-05-10 |
| CN106630295B true CN106630295B (en) | 2020-04-28 |
Family
ID=58843183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710023697.8A Active CN106630295B (en) | 2017-01-06 | 2017-01-06 | Sewage treatment process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106630295B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201538718U (en) * | 2009-10-22 | 2010-08-04 | 上海东振环保工程技术有限公司 | Advanced treatment system for recycling municipal sewage |
| CN104787951A (en) * | 2014-12-22 | 2015-07-22 | 内蒙古久科康瑞环保科技有限公司 | A treatment system for high-salt waste water |
| CN104445788B (en) * | 2014-12-24 | 2016-06-08 | 新疆德蓝股份有限公司 | High slat-containing wastewater treatment for reuse zero-emission integrated technique |
| CN105948351A (en) * | 2016-05-16 | 2016-09-21 | 神华集团有限责任公司 | Water treatment system and method |
-
2017
- 2017-01-06 CN CN201710023697.8A patent/CN106630295B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106630295A (en) | 2017-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100336746C (en) | Method of preparing pure water using metallurgic sewage | |
| CN101462801B (en) | Steel composite wastewater recycle-water double-membrane demineralization system and technique | |
| CN101209886B (en) | Advanced treatment recycling technique of urban sewage | |
| CN107253798B (en) | Advanced treatment and reuse combined process for steel industrial wastewater | |
| CN102417253B (en) | In-depth treatment zero-discharge recovery equipment for heavy metal waste water | |
| CN103922537B (en) | System for recycling wastewater from circulating cooling water by adopting membrane process | |
| EP2421798A2 (en) | Water treatment | |
| Oh et al. | Optimizing the in-line ozone injection and delivery strategy in a multistage pilot-scale greywater treatment system: System validation and cost-benefit analysis | |
| Abdel-Jawad et al. | Advanced technologies for municipal wastewater purification: technical and economic assessment | |
| CN101723551A (en) | Method for treating recycling of coking wastewater | |
| CN110436687A (en) | A kind of Zero discharging system and method for suitable industrial circulating water | |
| CN102399026A (en) | Combined technology for treatment and recycle of production sewage | |
| CN202265468U (en) | Equipment for deeply treating and recovering heavy metal waste water with zero discharge | |
| CN109422383A (en) | A kind of Treated sewage reusing treatment process | |
| CN203474587U (en) | Printing and dyeing textile wastewater treating and recycling device | |
| CN103663861B (en) | Advanced treatment method for grading and recycling industrial park wastewater after biochemical processes | |
| CN106630295B (en) | Sewage treatment process | |
| CN103073143B (en) | Strong brine zero emission treatment process for iron and steel plant | |
| CN110921948A (en) | Treatment device and treatment method for high-salinity industrial wastewater | |
| CN211419839U (en) | Industrial circulating water drainage recycling treatment device | |
| CN113003810A (en) | System for make municipal sewage into new water | |
| CN203668181U (en) | Sewage treatment equipment | |
| CN112939368A (en) | Circulating water sewage treatment and recycling method with high desalting rate | |
| CN209039254U (en) | A kind of Zero discharging system of suitable industrial circulating water | |
| CN103253836B (en) | A kind of percolate deep purifying treatment unit and method |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |