CN102390901B - Modularized multicomponent-combined industrial sewage treatment apparatus - Google Patents
Modularized multicomponent-combined industrial sewage treatment apparatus Download PDFInfo
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- CN102390901B CN102390901B CN 201110364466 CN201110364466A CN102390901B CN 102390901 B CN102390901 B CN 102390901B CN 201110364466 CN201110364466 CN 201110364466 CN 201110364466 A CN201110364466 A CN 201110364466A CN 102390901 B CN102390901 B CN 102390901B
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Abstract
The invention relates to a modularized multicomponent-combined industrial sewage treatment apparatus, which modularizes sewage treatment unit operations and allows the unit operations to be flexibly combined by controlling pipelines and valves. The apparatus comprises an air floatation device, a coagulation deposition device, a chemical oxidation device, and a chemical reduction device, and also comprises an air floatation storage adjustment tank, an air floatation pH adjustment tank, an air floatation intermediate tank, a coagulation deposition storage adjustment tank, a coagulation deposition pH adjustment tank, a coagulation deposition intermediate tank, a chemical oxidation storage adjustment tank, a chemical oxidation pH adjustment tank, a chemical oxidation intermediate tank, a chemical reduction storage adjustment tank, a chemical reduction pH adjustment tank, and a chemical reduction intermediate tank. The apparatus is a modularized multicomponent-combined industrial sewage treatment apparatus which can treat various sewages by one apparatus.
Description
[technical field]
The present invention relates to waste disposal plant, relate in particular to the polynary combination industrial sewage processing unit of modularization.
[background technology]
Present waste disposal plant all is according to the specific pollution factor that contains, certain sewage of the particular procedure water yield, formulates treatment process specially, by what build after the various unit operation fixed Combination.Such device is with strong points, and is better to specific wastewater treatment efficiency, but it might not be suitable for the sewage of other kind.
Because centralized industrial sewage for the handled sewage of processing plant, is not to produce in the own production process, but collect from each industrial enterprise.Because the change of the scope of business, the source of sewage also can be different.Such sewage exists wide in variety, complicated component, single relative features of smaller of the sewage water yield of planting, and all there is very big uncertainty in indexs such as its contained pollution factor, the water yield.If want to handle all sewage with the device of the single operation of a cover, obviously be impossible, and if all build the corresponding treatment unit of a cover at every kind of waste water, will inevitably cause excessive, the problem that lness ratio of plant is high of investment, this obviously also is worthless.
[summary of the invention]
The object of the present invention is to provide a kind of polynary combination industrial sewage processing unit of modularization that can handle multiple sewage with a covering device.
The technical solution adopted for the present invention to solve the technical problems is: to sewage disposal unit operation modularization, control by pipeline and valve, realization is carried out flexible combination to each unit operation, independently store regulating tank and pH and adjust groove preceding the setting up of each unit operation (as air supporting, coagulating sedimentation, chemical oxidation, chemical reduction etc.), in order to store pending sewage and the pH value for the treatment of sewage is adjusted to the required value of this unit operation; Behind each unit operation, set up medial launder, with the water outlet of temporary this unit operation.
The polynary combination industrial sewage processing unit of a kind of modularization of the present invention, include airfloat equipment, coagulation-sedimentation equipment, chemical oxidation equipment and chemical reduction equipment, it is characterized in that: also include air supporting storage regulating tank, air supporting pH adjustment groove, air supporting medial launder, coagulating sedimentation storage regulating tank, coagulating sedimentation pH adjustment groove, coagulating sedimentation medial launder, chemical oxidation storage regulating tank, chemical oxidation pH adjustment groove, chemical oxidation medial launder, chemical reduction storage regulating tank, chemical reduction pH adjustment groove and chemical reduction medial launder;
Air supporting stores regulating tank and connects air supporting pH adjustment groove, the outlet that air supporting pH adjusts groove connects airfloat equipment, the outlet of airfloat equipment connects the air supporting medial launder, and the air supporting medial launder connects the air supporting line pump by the first air supporting outlet valve, and the middle pump outlet of air supporting also is connected to one group of air supporting outlet valve;
Coagulating sedimentation stores regulating tank and connects coagulating sedimentation pH adjustment groove, coagulating sedimentation pH adjusts the groove outlet and connects coagulation-sedimentation equipment, coagulation-sedimentation equipment connects the coagulating sedimentation medial launder, the coagulating sedimentation medial launder connects the coagulating sedimentation line pump by the first coagulating sedimentation outlet valve, and the middle pump outlet of coagulating sedimentation also is connected to one group of 4 coagulating sedimentation outlet valve;
Chemical oxidation stores regulating tank and connects chemical oxidation pH adjustment groove, chemical oxidation pH adjusts groove and connects chemical oxidation equipment, the outlet of chemical oxidation equipment connects the chemical oxidation medial launder, the chemical oxidation medial launder connects the chemical oxidation line pump by the first chemical oxidation outlet valve, and the chemical oxidation line pump also is connected to one group of 4 chemical oxidation outlet valve;
Chemical reduction stores regulating tank and connects chemical reduction pH adjustment groove, chemical reduction pH adjusts groove and connects chemical reduction equipment, the outlet of chemical reduction equipment connects the chemical reduction medial launder, the chemical reduction medial launder connects the chemical reduction line pump by the first chemical reduction outlet valve, and the middle pump outlet of chemical reduction also is connected to one group of 4 chemical reduction outlet valve;
An outlet valve outlet of every group interconnects in described one group of 4 air supporting outlet valve, one group of 4 coagulating sedimentation outlet valve, one group of 4 chemical oxidation outlet valve and one group of 4 chemical reduction outlet valve, and each described connection is connected to air supporting by a water intaking valve respectively and stores that regulating tank, coagulating sedimentation store regulating tank, chemical oxidation stores regulating tank or chemical reduction stores regulating tank; Each described connection simultaneously is connected to air supporting pH by a water intaking valve respectively and adjusts groove, coagulating sedimentation pH adjustment groove, chemical oxidation pH adjustment groove or chemical reduction pH adjustment groove.
Described air supporting storage regulating tank connection air supporting pH adjustment groove, coagulating sedimentation storage regulating tank connection coagulating sedimentation pH adjustment groove, chemical oxidation storage regulating tank connection chemical oxidation pH adjustment groove, chemical reduction storage regulating tank connection chemical reduction pH adjustment groove can be to connect by pump respectively.
The present invention is under the prerequisite that does not change original unit operating equipment function and structure, operational mode by prior setting---be the switching of medial launder by-pass valve control, the start and stop of line pump and the switching of its control of export valve, and the control of drug variety and addition, can carry out flexible combination to each unit operating equipment, realize the processing to many kinds, the little water yield, high density complex industrial sewage.
The invention has the beneficial effects as follows: can handle multiple sewage with a covering device, solve the problem with the multiple sewage of same set of device processes.Be particularly useful for middle-size and small-size centralized industrial sewage for the physico-chemical pretreatment of processing plant to industrial sewage.
[description of drawings]
The invention will be further described below in conjunction with accompanying drawing.
Accompanying drawing is structural representation of the present invention.
Among the figure: 1 is air supporting storage regulating tank, 2 are air supporting pH adjustment groove, 3 is airfloat equipment, 4 are the air supporting medial launder, 5 are coagulating sedimentation storage regulating tank, 6 are coagulating sedimentation pH adjustment groove, 7 is coagulation-sedimentation equipment, 8 is the coagulating sedimentation medial launder, 9 are chemical oxidation storage regulating tank, 10 are chemical oxidation pH adjustment groove, 11 is chemical oxidation equipment, 12 is the chemical oxidation medial launder, 13 are chemical reduction storage regulating tank, 14 are chemical reduction pH adjustment groove, 15 are chemical reduction equipment, 16 are the chemical reduction medial launder, 17 is the first air supporting outlet valve, 18 are the air supporting line pump, 19 is the second air supporting outlet valve, 20 is the 3rd air supporting outlet valve, 21 is the 4th air supporting outlet valve, 22 is the 5th air supporting outlet valve, 23 is the first coagulating sedimentation outlet valve, 24 is the coagulating sedimentation line pump, 25 is the second coagulating sedimentation outlet valve, 26 is the 3rd coagulating sedimentation outlet valve, 27 is the 4th coagulating sedimentation outlet valve, 28 is the 5th coagulating sedimentation outlet valve, 29 is the first chemical oxidation outlet valve, 30 is the chemical oxidation line pump, 31 is the second chemical oxidation outlet valve, 32 is the 3rd chemical oxidation outlet valve, 33 is Four Modernizations oxidation outlet valve, 34 is the 5th chemical oxidation outlet valve, 35 is the first chemical reduction outlet valve, 36 are the chemical reduction line pump, 37 is the second chemical reduction outlet valve, 38 is the 3rd chemical reduction outlet valve, 39 is that the Four Modernizations restore water valve, 40 is the 5th chemical reduction outlet valve, 41 are air supporting storage regulating tank water intaking valve, 42 are air supporting pH adjustment groove water intaking valve, 43 are coagulating sedimentation storage regulating tank water intaking valve, 44 are coagulating sedimentation pH adjustment groove water intaking valve, 45 are chemical oxidation storage regulating tank water intaking valve, 46 are chemical oxidation pH adjustment groove water intaking valve, 47 are chemical reduction storage regulating tank water intaking valve, 48 are chemical reduction pH adjustment groove water intaking valve, 49 are air supporting medial launder pH setting device, 50 is coagulating sedimentation medial launder pH setting device, 51 is chemical oxidation medial launder pH setting device, 52 are chemical reduction medial launder pH setting device.
[embodiment]
Referring to accompanying drawing, the polynary combination industrial sewage processing unit of a kind of modularization of the present invention, include airfloat equipment 3, coagulation-sedimentation equipment 7, chemical oxidation equipment 11 and chemical reduction equipment 15 is characterized in that: also include air supporting and store regulating tank 1, air supporting pH adjusts groove 2, air supporting medial launder 4, coagulating sedimentation stores regulating tank 5, coagulating sedimentation pH adjusts groove 6, coagulating sedimentation medial launder 8, chemical oxidation stores regulating tank 9, chemical oxidation pH adjusts groove 10, chemical oxidation medial launder 12, chemical reduction stores regulating tank 13, chemical reduction pH adjusts groove 14 and chemical reduction medial launder 16:
Air supporting stores regulating tank 1 and connects air supporting pH adjustment groove 2, the outlet that air supporting pH adjusts groove 2 connects airfloat equipment 3, the outlet of airfloat equipment 3 connects air supporting medial launder 4, air supporting medial launder 4 connects air supporting line pump 18 by the first air supporting outlet valve 17, and the outlet of air supporting line pump 18 also is connected to one group of 4 air supporting outlet valve 19,20,21,22;
Coagulating sedimentation stores regulating tank 5 and connects coagulating sedimentation pH adjustment groove 6, coagulating sedimentation pH adjusts groove 6 outlets and connects coagulation-sedimentation equipment 7, coagulation-sedimentation equipment 7 connects coagulating sedimentation medial launder 8, coagulating sedimentation medial launder 8 connects coagulating sedimentation line pump 24 by the first coagulating sedimentation outlet valve 23, and the outlet of coagulating sedimentation line pump 24 also is connected to one group of 4 coagulating sedimentation outlet valve 25,26,27,28;
Chemical oxidation stores regulating tank 9 and connects chemical oxidation pH adjustment groove 10, chemical oxidation pH adjusts groove 10 and connects chemical oxidation equipment 11, the outlet of chemical oxidation equipment 11 connects chemical oxidation medial launder 12, chemical oxidation medial launder 12 connects chemical oxidation line pump 30 by the first chemical oxidation outlet valve 29, and chemical oxidation line pump 30 also is connected to one group of 4 chemical oxidation outlet valve 31,32,33,34;
Chemical reduction stores regulating tank 13 and connects chemical reduction pH adjustment groove 14, chemical reduction pH adjusts groove 14 and connects chemical reduction equipment 15, the outlet of chemical reduction equipment 15 connects chemical reduction medial launder 16, chemical reduction medial launder 16 connects chemical reduction line pump 36 by the first chemical reduction outlet valve 35, and the outlet of chemical reduction line pump 36 also is connected to one group of 4 chemical reduction outlet valve 37,38,39,40;
An outlet valve outlet of every group interconnects in described one group of 4 air supporting outlet valve 19,20,21,22, one groups of 4 coagulating sedimentation outlet valves 25,26,27,28, one groups of 4 chemical oxidation outlet valves 31,32,33,34 and one groups of 4 chemical reduction outlet valves 37,38,39,40, and each described connection is connected to air supporting by a water intaking valve respectively and stores that regulating tank 1, coagulating sedimentation store regulating tank 5, chemical oxidation stores regulating tank 9 or chemical reduction stores regulating tank 13; Each described connection simultaneously is connected to air supporting pH by a water intaking valve respectively and adjusts groove 2, coagulating sedimentation pH adjustment groove 6, chemical oxidation pH adjustment groove 10 or chemical reduction pH adjustment groove 14.
In an embodiment of the present invention, described air supporting storage regulating tank 1 connection air supporting pH adjustment groove 2, coagulating sedimentation storage regulating tank 5 connection coagulating sedimentation pH adjustment grooves 6, chemical oxidation storage regulating tank 9 connection chemical oxidation pH adjustment grooves 10, chemical reduction storage regulating tank 13 connection chemical reduction pH adjustment grooves 14 are to connect by pump respectively.
In an embodiment of the present invention, overflow port is established on each medial launder top, and water outlet and the by-pass valve control that links to each other with the line pump water-in established in the bottom.Liquid level control sensor, agitator and pH meter are established in inside.The outside pH setting device that is equipped with by pH meter control.Because the height of overflow port is higher than the high liquid level of liquid level control sensor, therefore, when fluid level control device was in starting state, the tail water behind this unit operation can not flow out from overflow port.Therefore, can select the tail water behind this unit operation automatically by the operational mode of setting in advance, be to be discharged or discharged by the bottom water outlet by the top overflow port.
Be final step operation as this unit operation, fluid level control device is in halted state, and the pH setting device starts, and tail water overflows discharging by overflow port after pH adjusts; Be not final step operation as this unit operation, system will be by the array mode of setting in advance, and the primer fluid level control device stops the pH setting device, and tail water flows to the line pump of being controlled start and stop by fluid level control device through by-pass valve control.
Middle pump outlet is adjusted groove with storage regulating tank and the pH of each unit operation (comprising itself) and is linked to each other behind each by-pass valve control, by the array mode of prior setting, with the tail water of this unit operation, is transported to corresponding next unit operation.
For flexible combination, storage regulating tank and pH adjustment groove at each unit operation are all established water-in, when the flow of back one unit operation during less than a last unit operation water outlet, the tail water of a last unit operation enters the storage regulating tank of next unit operation, otherwise the pH that directly enters the next unit operation adjusts groove.
Implementation step below in conjunction with specific examples explanation present method:
1, the cupric ammino closes the ion sewage processing
Originally be operating as and use chemical oxide removal ammonia, remove copper with coagulating sedimentation again.For this reason, the operational mode of setting is: chemical oxidation stores regulating tank 9 and line pump, chemical oxidation pH adjusts groove 10, chemical oxidation equipment 11, chemical oxidation medial launder 12, the first chemical oxidation outlet valve 29, chemical oxidation line pump 30, the 3rd chemical oxidation outlet valve 32, coagulating sedimentation pH adjusts groove water intaking valve 44, coagulating sedimentation pH adjusts groove 6, coagulation-sedimentation equipment 7, coagulating sedimentation medial launder 8, coagulating sedimentation medial launder pH setting device 50 is opened, the equipment of all the other marks, valve and line pump are closed, just can realize the serial operation of chemical oxidation and coagulating sedimentation, reach except ammonia, the effect of copper removal.
2, oil-containing oil emulsion
Originally be operating as with oil removal by air bubbling and a breakdown of emulsion, carry out the secondary breakdown of emulsion with coagulating sedimentation again, use the chemical oxide removal dissolved organic matter at last.For this reason, the operational mode of setting is: air supporting stores regulating tank 1 and line pump, air supporting pH adjusts groove 2, airfloat equipment 3, air supporting medial launder 4, the first air supporting outlet valve 17, air supporting line pump 18, the 3rd air supporting outlet valve 20, coagulating sedimentation pH adjusts groove water intaking valve 44, coagulating sedimentation pH adjusts groove 6, coagulation-sedimentation equipment 7, coagulating sedimentation medial launder 8, the first coagulating sedimentation outlet valve 23, coagulating sedimentation line pump 24, the 4th coagulating sedimentation outlet valve 27, chemical oxidation pH adjusts groove water intaking valve 46, chemical oxidation pH adjusts groove 10, chemical oxidation equipment 11, chemical oxidation medial launder 12, chemical oxidation medial launder pH setting device 51 is opened, the equipment of all the other marks, valve and line pump are closed, just can realize air supporting, coagulating sedimentation, the serial operation of chemical oxidation reaches predetermined treatment effect.
3, chromate waste water
Originally be operating as with chemical reduction and make 6 valency chromium be converted into 3 valency chromium, adjust with pH again and coagulating sedimentation is removed the chromium that is dissolved in the water.For reaching this purpose, the operational mode of setting is: chemical reduction stores regulating tank 13 and line pump, chemical reduction pH adjusts groove 14, chemical reduction equipment 15, chemical reduction medial launder 16, the first chemical reduction outlet valve 35, chemical reduction line pump 36, the 3rd chemical reduction outlet valve 38, coagulating sedimentation pH adjusts groove water intaking valve 44, coagulating sedimentation pH adjusts groove 6, coagulation-sedimentation equipment 7, coagulating sedimentation medial launder 8, coagulating sedimentation medial launder pH setting device 50 is opened, valve and the line pump of all the other marks are closed, just can realize that chemical reduction connects with coagulating sedimentation, reach the purpose of dechromisation.
Sewage disposal unit operation described in the present invention, but can comprise the processing operation of any independent operatings such as coagulating sedimentation, air supporting, chemical oxidation, chemical reduction, film processing, biological treatment, be main idea according to the invention as long as make up by method of the present invention.
Claims (2)
1. polynary combination industrial sewage processing unit of modularization, include airfloat equipment (3), coagulation-sedimentation equipment (7), chemical oxidation equipment (11) and chemical reduction equipment (15) is characterized in that: also include air supporting and store regulating tank (1), air supporting pH adjusts groove (2), air supporting medial launder (4), coagulating sedimentation stores regulating tank (5), coagulating sedimentation pH adjusts groove (6), coagulating sedimentation medial launder (8), chemical oxidation stores regulating tank (9), chemical oxidation pH adjusts groove (10), chemical oxidation medial launder (12), chemical reduction stores regulating tank (13), chemical reduction pH adjusts groove (14) and chemical reduction medial launder (16):
Air supporting stores regulating tank (1) and connects air supporting pH adjustment groove (2), the outlet that air supporting pH adjusts groove (2) connects airfloat equipment (3), the outlet of airfloat equipment (3) connects air supporting medial launder (4), air supporting medial launder (4) connects air supporting line pump (18) by the first air supporting outlet valve (17), and the outlet of air supporting line pump (18) also is connected to one group of 4 air supporting outlet valve (19,20,21,22);
Coagulating sedimentation stores regulating tank (5) and connects coagulating sedimentation pH adjustment groove (6), coagulating sedimentation pH adjusts groove (6) outlet and connects coagulation-sedimentation equipment (7), coagulation-sedimentation equipment (7) connects coagulating sedimentation medial launder (8), coagulating sedimentation medial launder (8) connects coagulating sedimentation line pump (24) by the first coagulating sedimentation outlet valve (23), and the outlet of coagulating sedimentation line pump (24) also is connected to one group of 4 coagulating sedimentation outlet valve (25,26,27,28);
Chemical oxidation stores regulating tank (9) and connects chemical oxidation pH adjustment groove (10), chemical oxidation pH adjusts groove (10) and connects chemical oxidation equipment (11), the outlet of chemical oxidation equipment (11) connects chemical oxidation medial launder (12), chemical oxidation medial launder (12) connects chemical oxidation line pump (30) by the first chemical oxidation outlet valve (29), and chemical oxidation line pump (30) also is connected to one group of 4 chemical oxidation outlet valve (31,32,33,34);
Chemical reduction stores regulating tank (13) and connects chemical reduction pH adjustment groove (14), chemical reduction pH adjusts groove (14) and connects chemical reduction equipment (15), the outlet of chemical reduction equipment (15) connects chemical reduction medial launder (16), chemical reduction medial launder (16) connects chemical reduction line pump (36) by the first chemical reduction outlet valve (35), and the outlet of chemical reduction line pump (36) also is connected to one group of 4 chemical reduction outlet valve (37,38,39,40);
An outlet valve outlet of every group interconnects in described one group of 4 air supporting outlet valve (19,20,21,22), one group of 4 coagulating sedimentation outlet valve (25,26,27,28), one group of 4 chemical oxidation outlet valve (31,32,33,34) and one group of 4 chemical reduction outlet valve (37,38,39,40), and each described connection is connected to air supporting by a water intaking valve respectively and stores regulating tank (1), coagulating sedimentation storage regulating tank (5), chemical oxidation storage regulating tank (9) or chemical reduction storage regulating tank (13); And each described connection is connected to by a water intaking valve respectively, and air supporting pH adjusts groove (2), coagulating sedimentation pH adjusts groove (6), chemical oxidation pH adjustment groove (10) or chemical reduction pH and adjusts groove (14).
2. the polynary combination industrial sewage processing unit of modularization according to claim 1 is characterized in that: described air supporting stores regulating tank (1) and connects air supporting pH and adjust groove (2), coagulating sedimentation and store regulating tank (5) and connect coagulating sedimentation pH and adjust groove (6), chemical oxidation and store regulating tank (9) and connect chemical oxidation pH and adjust groove (10), chemical reduction and store regulating tank (13) and connect chemical reduction pH to adjust groove (14) be to connect by pump respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110364466 CN102390901B (en) | 2011-11-17 | 2011-11-17 | Modularized multicomponent-combined industrial sewage treatment apparatus |
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| CN 201110364466 CN102390901B (en) | 2011-11-17 | 2011-11-17 | Modularized multicomponent-combined industrial sewage treatment apparatus |
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| CN102390901A CN102390901A (en) | 2012-03-28 |
| CN102390901B true CN102390901B (en) | 2013-10-02 |
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| CN113788577B (en) * | 2021-09-13 | 2023-04-18 | 昆明理工大学 | Integrated treatment device for underground water |
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| US5084165A (en) * | 1990-07-06 | 1992-01-28 | Int'l Environmental Systems, Inc. | Water treatment apparatus |
| CN101591118A (en) * | 2008-05-29 | 2009-12-02 | 北京能拓高科技有限公司 | Multifunctional general sewage treatment system |
| CN101591116A (en) * | 2008-05-29 | 2009-12-02 | 北京能拓高科技有限公司 | Small-sized box type modularization general-purpose sewage treating apparatus |
| CN201648142U (en) * | 2010-03-28 | 2010-11-24 | 毛允明 | Multi-functional modularized water purifying device |
| CN202322529U (en) * | 2011-11-17 | 2012-07-11 | 苏州新区星火环境净化有限公司 | Modularization multi-element combined industrial sewage treatment device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0502968A (en) * | 2005-07-19 | 2007-03-06 | Univ Sao Paulo | wastewater treatment system and process |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5084165A (en) * | 1990-07-06 | 1992-01-28 | Int'l Environmental Systems, Inc. | Water treatment apparatus |
| CN101591118A (en) * | 2008-05-29 | 2009-12-02 | 北京能拓高科技有限公司 | Multifunctional general sewage treatment system |
| CN101591116A (en) * | 2008-05-29 | 2009-12-02 | 北京能拓高科技有限公司 | Small-sized box type modularization general-purpose sewage treating apparatus |
| CN201648142U (en) * | 2010-03-28 | 2010-11-24 | 毛允明 | Multi-functional modularized water purifying device |
| CN202322529U (en) * | 2011-11-17 | 2012-07-11 | 苏州新区星火环境净化有限公司 | Modularization multi-element combined industrial sewage treatment device |
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Owner name: SUZHOU XINGHUO ENVIRONMENT PURIFICATION CO., LTD. Free format text: FORMER NAME: SUZHOU NEW DISTRICT XINGHUO ENVIRONMENT PURIFICATION CO., LTD. |
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Address after: 215000 99 lion Road, hi tech Development Zone, Jiangsu, Suzhou Patentee after: SUZHOU H&H ENVIRONMENTAL TREATMENT CO., LTD. Address before: 215000 99 lion Road, hi tech Development Zone, Jiangsu, Suzhou Patentee before: Suzhou Xinqu Xinghuo Environment Purification Co., Ltd. |