CN201882988U - Treatment and recycling system for chemical chlor-alkali waste water - Google Patents
Treatment and recycling system for chemical chlor-alkali waste water Download PDFInfo
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- CN201882988U CN201882988U CN2010206052882U CN201020605288U CN201882988U CN 201882988 U CN201882988 U CN 201882988U CN 2010206052882 U CN2010206052882 U CN 2010206052882U CN 201020605288 U CN201020605288 U CN 201020605288U CN 201882988 U CN201882988 U CN 201882988U
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Abstract
A treatment and recycling system for chemical chlor-alkali waste water comprises a sludge concentration device, a recycling device, a residue removing device, a regulating device, a dissolved gas device, a buffer unit, a filter device, a reverse osmosis device and a fresh water tank, wherein the residue removing device, the regulating device, the dissolved gas device, the buffer unit, the filter device, the reverse osmosis device and the fresh water tank are connected sequentially through a pipeline, the residue removing device includes a lattice well and an oil separation residue settling tank, the regulating device includes a regulating tank, a pH (potential of hydrogen ) control device and a flocculation tank, the recycling device includes a waste oil tank, a reverse osmosis concentrated brine tank and a waste liquid collection tank, the sludge concentration device includes a sludge concentration tank and a filter press connected in series, the residue removing device and the dissolved gas device are respectively provided with a pipeline connected with the sludge concentration device, and the residue removing device, the filter device, the reverse osmosis device and the sludge concentration device are respectively provided with a pipeline connected with the recycling device. The treatment and recycling system is controlled fully automatically, an MMI (man-machine interface), a variable frequency control power device system and a liquid level switch are all provided with PLC (programmable logical controller) control systems, and according the treatment and recycling system is wide in application range and fine in pollutant removal effect.
Description
Technical field
The utility model relates to a kind of chemical wastewater treatment and reclaiming system, specifically is meant a kind of chemical industry for making chlorine and alkali wastewater treatment and reclaiming system of being used for.
Technical background
Chlor-alkali industry water quality complexity, the content of hardness and soluble salt is higher in the water, and removing has certain degree of difficulty.The water coolant that hard water is used as industrial production can make the heat exchanger scaling, and serious not only can hinder water stream channel, and heat exchange effect is reduced greatly, and what influence was produced carries out smoothly, even is forced to stop production.Fouling also can produce underdeposit corrosion, and can make heat exchanger perforation and damage, material leakage loss not only, and increase the facility investment expense, the waste steel.The high density brackish water not only can produce equipment and corrode, and causes the shortening of service life of equipment, and can have a strong impact on the water quality of reuse water, makes reuse water not reach the requirement of production technique quality of water, and the quality of product is produced in influence.And domestic chlor-alkali industry water treatment all can also not have normal fully operation not up to standard effectively.
The utility model content
The purpose of this utility model provides a kind of farthest conserve water resource, realizes as much as possible reducing sewage discharge, and simple to operate, operational management is convenient; Operating cost is low, maintenance is few, environment and enterprise is produced the chemical industry for making chlorine and alkali wastewater treatment and the reclaiming system of the effect of doulbe-sides' victory.
To achieve these goals, the utility model has adopted following technical scheme:
A kind of chemical industry for making chlorine and alkali wastewater treatment and reclaiming system comprise sludge concentration device, retrieving arrangement and the deslagging device, setting device, air-dissolving apparatus, snubber assembly, filtration unit, reverse osmosis unit, the clean water basin that link to each other successively by pipeline; Described deslagging device is respectively equipped with pipeline with air-dissolving apparatus and links to each other with described sludge concentration device; Described deslagging device, filtration unit, reverse osmosis unit and sludge concentration device are respectively equipped with pipeline and link to each other with retrieving arrangement.
Described deslagging device comprises grille well and oil removal detritus pool.Establish grid in the grille well, be provided with oil header and sludge pump in the oil removal detritus pool, the upper end of oil removal detritus pool is provided with distributing trough, and grille well is connected with distributing trough.Waste water is removed particulate matter bigger in the trade effluent by the interception function of grid in the grille well.The oil removal detritus pool adopts the mode of deciding water level to move, and water level can not change with the variation of the water yield, and the oil removal facility is set, and promptly oil header is removed most of oil slick in the sewage effectively thereby reach, the purpose of the part of sedimentation simultaneously suspended substance.
Described setting device comprises equalizing tank, pH control device and flocculation tank.Described equalizing tank has the effect of regulating pondage, homogenizing water quality, links to each other by pipeline with the oil removal detritus pool, establishes sewage pump in the pond, and flocculation tank links to each other with equalizing tank by outfall sewer.
Establish the pH controller on the outfall sewer of equalizing tank and detect the sampling groove, control the keying and the soda acid dosage of soda acid throwing device by the pH value of pH controller feedback.
Be provided with agitator in the flocculation tank, flocculation tank is provided with the first medicament throwing device (acid, alkali, coagulating agent and flocculation agent are respectively equipped with special-purpose adding equipment) outward, the sewage pump interlock of the described first medicament throwing device and reaction tank agitator and equalizing tank.
Described air-dissolving apparatus comprises pressurized dissolved air flotation pond, dissolving, establishes molten gas reflux pump in the pressurized dissolved air flotation pond.The sewage pump interlock of molten gas reflux pump and equalizing tank.The pressurized dissolved air flotation pond is provided with pipeline and links to each other with flocculation tank, and described dissolving is provided with pipeline and links to each other with intermediate pool with the pressurized dissolved air flotation pond respectively.
Enter intermediate pool after the water outlet of pressurized dissolved air flotation pond, promptly cushion water collecting basin, intermediate pool is established sewage pump and liquid level switch for the more medium filter water intaking in the pond, by the keying of liquid level switch control water pump.
Be provided with the second medicament dosing system behind the sewage pump, the second medicament dosing system comprises sterilant adding equipment, coagulant dosage equipment, flocculant concentration equipment etc.
Described filtration unit comprises more medium filter, activated charcoal filter and security personnel's strainer; Intermediate pool, more medium filter and activated charcoal filter link to each other successively by pipeline; Be provided with recoil pump and be connected with activated charcoal filter with more medium filter respectively, medium filter is respectively equipped with pipeline with activated charcoal filter and links to each other with intermediate pool; Be provided with the reverse osmosis water distributing pipe between described activated charcoal filter and the security personnel's strainer, the reverse osmosis water distributing pipe is established superpressure and is surmounted pipe, and described superpressure surmounts pipe and is connected with clean water basin.When the water outlet superpressure of active carbon filtering device, enter clean water basin and mix by surmounting pipe with the reverse osmosis water outlet, the water distributing pipe water outlet enters reverse osmosis system.
Security personnel's strainer links to each other with reverse osmosis unit by outlet conduit, and this pipeline is provided with high-pressure pump, and described reverse osmosis unit comprises reverse osmosis membrane assembly.The reverse osmosis unit water outlet enters clean water basin, surmounts water outlet with the gac superpressure and mixes.Described reverse osmosis unit links to each other with described clean water basin by pipeline, the outlet conduit that reverse osmosis unit is provided with a pipeline and security personnel's strainer forms the loop, described reverse osmosis unit also is provided with another pipeline and links to each other with described clean water basin and form the loop, and this pipeline is provided with the Chemical Cleaning for Reverse Osmosis device.Reverse osmosis unit be by reverse osmosis membrane to water through the row purifying, and reverse osmosis membrane can be subjected to certain pollution after operation for some time, need clean the film system, to recover the function of film system, so on the Chemical Cleaning for Reverse Osmosis device, be provided with the 3rd medicament medicine system, add non-oxidizable sterilant by this device, in order to kill the microorganism that may exist in the film system.
Described retrieving arrangement comprises waste oil pool, reverse osmosis concentrated brine tank and waste liquid water collecting basin, and described waste oil pool links to each other by pipeline with described oil removal detritus pool, is used to store the oil slick that the comprehensive adjustment pond is separated out.
Described reverse osmosis concentrated brine tank links to each other by pipeline with reverse osmosis unit, is used to store reverse osmosis concentrated salt solution water outlet and the water outlet of reverse osmosis system matting.
Described waste liquid water collecting basin links to each other by pipeline with described equalizing tank, also is provided with pipeline and links to each other with activated charcoal filter with more medium filter.The waste liquid water collecting basin is provided with sewage pump, PLC signal feedback point, liquid level switch, can realize superelevation, normal, low-water level contact signal feedback control.Described waste liquid water collecting basin is used for waste liquids such as technology cleaning between bunkerage, waste liquid, dosing raffinate, and through lift pump blowback equalizing tank, enters treatment system and handle.
Described sludge concentration device comprises placed in-line sludge thickener and pressure filter, sludge thickener is respectively equipped with pipeline with pressure filter and links to each other with the waste liquid water collecting basin, described sludge thickener, take up the sediment of oil trap, the scum silica frost in pressurized dissolved air flotation pond etc., after concentrating, enter pressure filter and dewater, filtrate and sludge thickener supernatant liquor are drained into equalizing tank.
During the utility model work, trade effluent pumps into grille well, interval action by grid is removed bigger solid matter in the waste water, to avoid detrimentally affect to the subsequent disposal system, the grille well water outlet enters the oil removal detritus pool, through oil removal, behind the sediment, remove most oil slick and settling property suspended substance and colloidalmaterial preferably, the influent waste water equalizing tank, homogenizing water quality in equalizing tank, regulating pondage, waste water in the equalizing tank pumps into pH regulator through impeller pump, flocculation tank, by adding acid, alkali carries out pH regulator to waste water, and add coagulating agent and flocculation agent carries out flocculation reaction, and entering the pressurized dissolved air flotation pond after reacting completely and carry out pulp water and separate, supernatant liquor enters intermediate pool, through lift pump waste water is pumped into more medium filter, pass through multi-medium filtering, activated carbon filtration, security personnel's filtration waits pre-treatment, enters reverse osmosis unit at last, and the water outlet of reverse osmosis unit drains into clean water basin.The waste oil that is separated out enters waste oil pool.The scum silica frost in the sediment of oil trap, pressurized dissolved air flotation pond etc. enter sludge thickener, enter pressure filter and dewater after concentrating, and filtrate and sludge thickener supernatant liquor drain into equalizing tank, and mud cake is regularly transported outward processing.Reverse osmosis concentrated salt solution enters strong brine storage pond.
The utility model can effectively be handled chemical industry acidic and alkaline waste water and thermoelectric power station oily(waste)water and change the water draining, produces the process water that water is used for circulating water system and other operation, applied range, and it is effective to remove dirt; Adopt full-automatic control, the man-machine monitoring interface of MMI, variable frequency control power plant system, liquid level switch all have been provided with the PLC Controlling System, full-automatic control, simple to operate, operational management is convenient; Operating cost is low, maintenance is few; Stable, this process using advanced reverse osmosis unit, can remove the oils and the solubility suspended substance of trade effluent middle and high concentration effectively, and can solve and contain higher hardness and salinity in the waste water.
Description of drawings
Accompanying drawing 1 is a structured flowchart of the present utility model;
Accompanying drawing 2 is a schema of the present utility model.
Embodiment
Now in conjunction with the accompanying drawings, further specify the utility model.
With reference to accompanying drawing 1 and accompanying drawing 2, a kind of chemical industry for making chlorine and alkali wastewater treatment and reclaiming system comprise sludge concentration device 1, retrieving arrangement 2 and the deslagging device 3, setting device 4, air-dissolving apparatus 5, snubber assembly 6, filtration unit 7, reverse osmosis unit 8, the clean water basin 9 that link to each other successively by pipeline; Described deslagging device 3 is respectively equipped with pipeline with air-dissolving apparatus 5 and links to each other with described sludge concentration device 1; Described deslagging device 3, filtration unit 7, reverse osmosis unit 8 and sludge concentration device 1 are respectively equipped with pipeline and link to each other with retrieving arrangement 2.
Deslagging device 3 comprises grille well 31 and oil removal detritus pool 32.Establish grid in the grille well 31,32 are provided with oil header 321 and sludge pump 322 in the oil removal detritus pool, and the upper end of oil removal detritus pool 32 is provided with distributing trough 33, and grille well 31 is connected with distributing trough 33.
Setting device 4 comprises equalizing tank 41, pH control device 42 and flocculation tank 43.Equalizing tank 41 links to each other by pipeline with the oil removal detritus pool, establish first sewage pump 411 in the pond, first sewage pump 411 is by liquid level switch 412 controls of a PLC signal feedback point, when liquid level is in ordinary water-level, start first sewage pump 411, when liquid level is in lowest water level, close all first sewage pumps 411.Establish the pH controller on the pipeline of equalizing tank and detect the sampling groove, control the keying and the soda acid dosage of soda acid throwing device by the pH value of pH controller feedback.
Logical 43 pipings of flocculation tank link to each other with equalizing tank, be provided with agitator 431 in the flocculation tank 43, flocculation tank is provided with the first medicament throwing device 432 (not marking), the first medicament throwing device 432 has comprised that acid, alkali, coagulating agent and flocculation agent are respectively equipped with special-purpose adding equipment, and, the first medicament throwing device 432 and reaction tank agitator 431 and 411 interlocks of first sewage pump.
The equalizing tank outfall sewer is established the pH controller and is detected the sampling groove, control the keying and the dosage of the first medicament throwing device 432 by the pH value of pH controller feedback, the first medicament throwing device 432 and reaction tank agitator 431 link with first sewage pump 411 of equalizing tank 41, when first sewage pump 411 is opened, automatically start the first medicament throwing device 432 and reaction tank agitator 431, when first sewage pump 411 is closed, time-delay closing first medicament throwing device 432 and reaction tank agitator 431, delay time is adjustable, and the dosage of the first medicament throwing device 432 quantitatively adds according to the experimental value that debugging obtains the time.
Air-dissolving apparatus 5 comprises pressurized dissolved air flotation pond 51, dissolving 52, establishes molten gas reflux pump 511 in the pressurized dissolved air flotation pond.First sewage pump, 411 interlocks of molten gas reflux pump 511 and equalizing tank 41.Pressurized dissolved air flotation pond 51 is provided with pipeline and links to each other with flocculation tank 43, and dissolving 52 is provided with a return and connects pressurized dissolved air flotation pond 51 and intermediate pool 6.
Enter intermediate pool 6 after 51 water outlets of pressurized dissolved air flotation pond, establish second sewage pump 61 and the liquid level switch 62 that is located at the 2nd PLC signal feedback point in the intermediate pool 6.The i.e. keying of second sewage pump 61 of working shaft of the level value controlled filter device 7 by liquid level switch 62 feedback when liquid level during at ordinary water-level, starts second sewage pump 61, when liquid level is lower than minimum control water level, closes second sewage pump 61.Be provided with the second medicament throwing device 63 (not marking) behind second sewage pump 61, the second medicament throwing device 63 comprises sterilant adding equipment, coagulant dosage equipment, flocculant concentration equipment etc.; The second medicament throwing device 63 and 61 interlocks of second sewage pump, when lift pump is opened, automatically start the second medicament throwing device 63, when second sewage pump 61 is closed, the time-delay closing second medicament throwing device 63, delay time is adjustable, and the dosage of coagulating agent and flocculation agent and sterilant quantitatively adds according to the experimental value that debugging obtains the time.
Filtration unit 7 comprises more medium filter 71, activated charcoal filter 72, security personnel's strainer 73; Logical 72 pipings of intermediate pool 6, more medium filter 71 and activated charcoal filter link to each other successively; Be provided with recoil pump 74 and be connected with activated charcoal filter 72 with more medium filter 71 respectively, more medium filter 71 is with activated charcoal filter 72 and be respectively equipped with pipeline and link to each other with intermediate pool 6; Activated charcoal filter 72 and security personnel are provided with reverse osmosis water distributing pipe 75 between the strainer 73, and reverse osmosis water distributing pipe 75 is established superpressure and surmounted pipe 751, and superpressure surmounts pipe 751 and is connected with clean water basin 9.
Security personnel's strainer 73 links to each other with reverse osmosis unit 8 by outlet conduit, and outlet conduit is provided with high-pressure pump 81 (not marking), and reverse osmosis unit 8 comprises reverse osmosis membrane assembly 82.Reverse osmosis unit 8 links to each other with clean water basin 9 by pipeline, the outlet conduit that reverse osmosis unit 8 is provided with the second return 10-2 and security personnel's strainer 73 forms the loop, reverse osmosis unit 8 also is provided with pipeline and links to each other with clean water basin 9, this pipeline is provided with Chemical Cleaning for Reverse Osmosis device 83, and Chemical Cleaning for Reverse Osmosis device 83 is provided with the 3rd medicament chemicals dosing plant 831 (not marking).The keying of Chemical Cleaning for Reverse Osmosis device 83 and start time, the 3rd medicament chemicals dosing plant 831 linked with Chemical Cleaning for Reverse Osmosis device 83 by the control of PLC master control system.
Retrieving arrangement 1 comprises waste oil pool 11, reverse osmosis concentrated brine tank 12 and waste liquid water collecting basin 13, waste oil pool 11 and oil removal detritus pool 32 link to each other by pipeline, reverse osmosis concentrated brine tank 12 and reverse osmosis unit 8 link to each other by pipeline, waste liquid water collecting basin 13 and equalizing tank 41 link to each other by pipeline, also are provided with pipeline simultaneously and link to each other with activated charcoal filter 72 with more medium filter 71.Waste liquid water collecting basin 13 is provided with the 3rd sewage pump 131, is located at the liquid level switch 132 of the 3rd PLC signal feedback point.
Sludge concentration device 2 comprises placed in-line sludge thickener 21 and pressure filter 22, and sludge thickener 21 is respectively equipped with pipeline with pressure filter 22 and links to each other with waste liquid water collecting basin 13.
The used pump of the utility model all is provided with standby configuration, among the figure not the pump of label be stand-by pump, when a set of equipment broke down, the automatically starting redundant system was handled, normal equipment and the stand-by facilities that uses can be realized the switching that takes turns to operate, and every operation was switched once in 4 hours.But all manual operations of power-equipment that all are controlled by automatic control, the PLC master control system can be controlled any one automatic reference mark by reaching manual mode automatically at Central Control Room, the field control panel is established at the scene, can be at the scene by regulating control manually.
Above-described the utility model embodiment does not constitute the qualification to the utility model protection domain.Any modification of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the claim protection domain of the present utility model.
Claims (9)
1. chemical industry for making chlorine and alkali wastewater treatment and reclaiming system, comprise sludge concentration device, retrieving arrangement, deslagging device, setting device, air-dissolving apparatus, snubber assembly, filtration unit, reverse osmosis unit, clean water basin, it is characterized in that, comprise that deslagging device, setting device, air-dissolving apparatus, snubber assembly, filtration unit, reverse osmosis unit and clean water basin link to each other successively by pipeline; Described deslagging device is respectively equipped with pipeline with air-dissolving apparatus and links to each other with described sludge concentration device; Described deslagging device, filtration unit, reverse osmosis unit and sludge concentration device are respectively equipped with pipeline and link to each other with retrieving arrangement.
2. a kind of chemical industry for making chlorine and alkali wastewater treatment as claimed in claim 1 and reclaiming system, it is characterized in that, described deslagging device comprises grille well and oil removal detritus pool, establish grid in the grille well, be provided with oil header and sludge pump in the oil removal detritus pool, the upper end of oil removal detritus pool is provided with distributing trough, and grille well is connected with distributing trough.
3. a kind of chemical industry for making chlorine and alkali wastewater treatment as claimed in claim 2 and reclaiming system is characterized in that described setting device comprises equalizing tank, flocculation tank; Described equalizing tank links to each other by pipeline with the oil removal detritus pool; Equalizing tank links to each other with flocculation tank by outfall sewer, establishes the pH control device on this outfall sewer.
4. a kind of chemical industry for making chlorine and alkali wastewater treatment as claimed in claim 3 and reclaiming system is characterized in that described air-dissolving apparatus comprises pressurized dissolved air flotation pond, dissolving; Flocculation tank links to each other by pipeline with the pressurized dissolved air flotation pond, and described dissolving is provided with pipeline and links to each other with intermediate pool with the pressurized dissolved air flotation pond respectively.
5. a kind of chemical industry for making chlorine and alkali wastewater treatment as claimed in claim 4 and reclaiming system is characterized in that, described filtration unit comprises more medium filter, activated charcoal filter and security personnel's strainer; Intermediate pool, more medium filter and activated charcoal filter link to each other successively by pipeline; Be provided with recoil pump and be connected with activated charcoal filter with more medium filter respectively, medium filter is respectively equipped with pipeline with activated charcoal filter and links to each other with intermediate pool; Described activated charcoal filter and security personnel are provided with the reverse osmosis water distributing pipe between the strainer, and the reverse osmosis water distributing pipe is established superpressure and surmounted pipe and link to each other with clean water basin, and the strainer of ensuring public security links to each other with reverse osmosis unit by outlet conduit.
6. a kind of chemical industry for making chlorine and alkali wastewater treatment as claimed in claim 5 and reclaiming system, it is characterized in that, described reverse osmosis unit links to each other with described clean water basin by pipeline, the outlet conduit that reverse osmosis unit is provided with a pipeline and security personnel's strainer forms the loop, reverse osmosis unit also is provided with another pipeline and links to each other with clean water basin and form the loop, and this pipeline is provided with the Chemical Cleaning for Reverse Osmosis device.
7. a kind of chemical industry for making chlorine and alkali wastewater treatment as claimed in claim 6 and reclaiming system is characterized in that described retrieving arrangement comprises waste oil pool, reverse osmosis concentrated brine tank and waste liquid water collecting basin, and described waste oil pool links to each other by pipeline with described oil removal detritus pool; Described reverse osmosis concentrated brine tank links to each other by pipeline with reverse osmosis unit; Described waste liquid water collecting basin is provided with pipeline and links to each other with equalizing tank, also is provided with pipeline and links to each other with activated charcoal filter with more medium filter respectively.
8. a kind of chemical industry for making chlorine and alkali wastewater treatment as claimed in claim 7 and reclaiming system is characterized in that described sludge concentration device comprises placed in-line sludge thickener and pressure filter, and sludge thickener is respectively equipped with pipeline with pressure filter and links to each other with the waste liquid water collecting basin.
9. as claim 1 to 8 each described a kind of chemical industry for making chlorine and alkali wastewater treatment and reclaiming system, it is characterized in that flocculation tank, intermediate pool are provided with on the second medicament dosing system, the Chemical Cleaning for Reverse Osmosis device and are equipped with the medicament chemicals dosing plant; Equalizing tank, intermediate pool, waste liquid water collecting basin are equipped with sewage pump, PLC signal feedback point, liquid level switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206052882U CN201882988U (en) | 2010-11-11 | 2010-11-11 | Treatment and recycling system for chemical chlor-alkali waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206052882U CN201882988U (en) | 2010-11-11 | 2010-11-11 | Treatment and recycling system for chemical chlor-alkali waste water |
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| CN201882988U true CN201882988U (en) | 2011-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010206052882U Expired - Lifetime CN201882988U (en) | 2010-11-11 | 2010-11-11 | Treatment and recycling system for chemical chlor-alkali waste water |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381815A (en) * | 2011-09-30 | 2012-03-21 | 江苏春晖乳业有限公司 | Treatment method of milk production wastewater |
| CN102964024A (en) * | 2012-09-29 | 2013-03-13 | 河南永银化工实业有限公司 | Wastewater zero discharge system of chlorine-alkali industry |
| CN103011450A (en) * | 2012-11-27 | 2013-04-03 | 常州大学 | Treatment method for chlor-alkali industry wastewater |
| CN106277534A (en) * | 2016-09-23 | 2017-01-04 | 江苏瑞达环保科技有限公司 | The processing means of a kind of low concentration brine waste and technique |
| CN107089737A (en) * | 2017-05-09 | 2017-08-25 | 江苏盖亚环境科技股份有限公司 | Nanoscale groundwater extraction handles unitary module intelligence system |
| CN107459251A (en) * | 2017-09-29 | 2017-12-12 | 四川德胜集团钒钛有限公司 | A kind of sludge pressing Water Sproading utilizes system |
| CN114409137A (en) * | 2022-02-09 | 2022-04-29 | 包头市唐纳德精细化工有限公司 | Low-cost circulating water energy-saving emission-reduction treatment equipment and process |
-
2010
- 2010-11-11 CN CN2010206052882U patent/CN201882988U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381815A (en) * | 2011-09-30 | 2012-03-21 | 江苏春晖乳业有限公司 | Treatment method of milk production wastewater |
| CN102964024A (en) * | 2012-09-29 | 2013-03-13 | 河南永银化工实业有限公司 | Wastewater zero discharge system of chlorine-alkali industry |
| CN103011450A (en) * | 2012-11-27 | 2013-04-03 | 常州大学 | Treatment method for chlor-alkali industry wastewater |
| CN106277534A (en) * | 2016-09-23 | 2017-01-04 | 江苏瑞达环保科技有限公司 | The processing means of a kind of low concentration brine waste and technique |
| CN107089737A (en) * | 2017-05-09 | 2017-08-25 | 江苏盖亚环境科技股份有限公司 | Nanoscale groundwater extraction handles unitary module intelligence system |
| CN107459251A (en) * | 2017-09-29 | 2017-12-12 | 四川德胜集团钒钛有限公司 | A kind of sludge pressing Water Sproading utilizes system |
| CN114409137A (en) * | 2022-02-09 | 2022-04-29 | 包头市唐纳德精细化工有限公司 | Low-cost circulating water energy-saving emission-reduction treatment equipment and process |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HOMELAND ENVIRONMENT PROTECTION CO., LTD. Free format text: FORMER NAME: GUANGZHOU HOMELAND ENVIRONMENTAL ENGINEERING CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 23, building 1, Huasheng Building, No. five, 510630 mountain road, Guangzhou, Guangdong, Tianhe District Patentee after: CNHOMELAND Environmental Protection Co., Ltd. Address before: 23, building 1, Huasheng Building, No. five, 510630 mountain road, Guangzhou, Guangdong, Tianhe District Patentee before: Guangzhou Homeland Environmental Engineering Co., Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110629 |