CN203065291U - Closed cycle treatment system for paint-spraying wastewater - Google Patents

Closed cycle treatment system for paint-spraying wastewater Download PDF

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Publication number
CN203065291U
CN203065291U CN 201320070229 CN201320070229U CN203065291U CN 203065291 U CN203065291 U CN 203065291U CN 201320070229 CN201320070229 CN 201320070229 CN 201320070229 U CN201320070229 U CN 201320070229U CN 203065291 U CN203065291 U CN 203065291U
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CN
China
Prior art keywords
lift pump
stirrer
paint
tank
filtrate
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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.)
Expired - Fee Related
Application number
CN 201320070229
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Chinese (zh)
Inventor
施建臣
柯火仲
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Xiamen Zhong Ou Environmental Protection Technology Co Ltd
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Xiamen Zhong Ou Environmental Protection Technology Co Ltd
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Priority to CN 201320070229 priority Critical patent/CN203065291U/en
Application granted granted Critical
Publication of CN203065291U publication Critical patent/CN203065291U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a closed cycle treatment system for paint-spraying wastewater and relates to wastewater treatment equipment. A paint slag removing tank, a middle lifting pump, a first solid-liquid separator, an oxidation tank, a first filtrate lifting pump, a second solid-liquid separator, a flocculation tank, a second filtrate lifting pump, a third solid-liquid separator, a storage tank and a recycled water lifting pump are connected in sequence; a paint slag removing stirrer is arranged in the paint slag removing tank; an oxidation tank stirrer is arranged in the oxidation tank; a flocculation tank stirrer is arranged in the flocculation tank; a paint slag removing agent inlet is formed on the paint slag removing tank; an inlet for pH regulating agent and the like is formed on the oxidation tank; the inlet for the pH regulating agent and the like is formed on the flocculation tank; and the middle lifting pump, the filtrate lifting pump, the recycled water lifting pump, the paint slag removing stirrer, the oxidation tank sitter and the flocculation tank stirrer are electrically connected with an electrical control system, respectively. The closed cycle treatment system for the paint-spraying wastewater can be used for lowering the investment and operation cost of the paint-spraying wastewater treatment, oxidizing and decomposing most of organic substances in the wastewater, enabling the settled and treated water quality to satisfy water-quality requirements of paint-removing mist of a paint spraying table, and realizing the recycling of the paint-spraying wastewater.

Description

A kind of painting wastewater closed circulation treatment system
Technical field
The utility model relates to a kind of sewage treatment equipment, especially relates to a kind of painting wastewater closed circulation treatment system.
Background technology
Painting wastewater is mainly derived from wet type spray chamber and washes working district, paint spray booth air with water, and lacquer thing and organic solvent is transferred to and forms painting wastewater in the water in the air.Contain a large amount of lacquer composition granules in the waste water, its water quality is decided by used coating (based on acrylic paint, pyroxylin(e)finish, amino lacquer, alkyd paint and epoxy-based lacquers), solvent (as ethanol, acetone, ester class, benzene class) and auxiliary agent.In the painting process, over-sprayed paint fog is absorbed the back by cascade and flows into the pond, the recirculated water muddiness that causes of a specified duration, and water quality is smelly, and lacquer slag precipitation is many, and regular meeting's blocking pipeline influences ordinary production.Spray paint recirculated water because the soiling value height is difficult to degraded, and general waste water treatment process is difficult to handle; Frequently change Shui Qingchi and will expend lot of manpower and material resources, increase production cost.
Existing painting wastewater be formed with following dual mode: the part of first recirculated water is discharged from becomes waste water, and the fresh water of additional capacity; Second it be that water is through necessarily recycling the back update all.Though the pollution level of dual mode is variant, wastewater treatment all is to scum earlier, flocculates with aluminium salt then, handles contained coating pigment, resin and tensio-active agent etc. in the removal waste water by precipitation or come-up.Residual a part of resin and solvent in the water after processing, chemical oxygen demand (COD) and biochemical oxygen demand (BOD) still show very high, should further handle again.Through pretreated water outlet, can together handle with other waste water, treatment process has oxidation, Coagulation Method, biological treatment etc., the discharged wastewater met the national standard after the processing.
Summary of the invention
The purpose of this utility model is at the water yield of painting wastewater less relatively, and COD is than higher, and biodegradability is relatively poor.Then cost of investment is too high with common materialization or biochemical treatment, processing costs is too big, floor space is problem such as very big also, provide and to reduce painting wastewater processing investment and running cost, make most of oxidation operation decomposition in the waste water, water quality after precipitation process can satisfy Paint spraying platform except the water quality requirement of coating cloud, realizes a kind of painting wastewater closed circulation treatment system of the cyclically utilizing of painting wastewater.
The utility model is provided with paint removal slag ladle, oxidation tank, flocculation jar, conservation tank, middle lift pump, the 1st filtrate lift pump, the 2nd filtrate lift pump, reuse water lift pump, paint removal slag ladle stirrer, oxidation tank stirrer, flocculation jar stirrer, the 1st solid-liquid separator, the 2nd solid-liquid separator, the 3rd solid-liquid separator and electrical control system;
Described paint removal slag ladle, middle lift pump, the 1st solid-liquid separator, oxidation tank, the 1st filtrate lift pump, the 2nd solid-liquid separator, flocculation jar, the 2nd filtrate lift pump, the 3rd solid-liquid separator, conservation tank are connected successively with the reuse water lift pump, and the reuse water of reuse water lift pump exports external spray booth; Be provided with paint removal slag ladle stirrer in the described paint removal slag ladle, be provided with the oxidation tank stirrer in the described oxidation tank, be provided with flocculation jar stirrer in the described flocculation jar; Described paint removal slag ladle is provided with paint removal slag agent import, establishes pH on the oxidation tank and adjusts agent, oxygenant and catalyst inlet, establishes pH on the flocculation jar and adjusts agent, coagulant aids and flocculation agent import; Lift pump, the 1st filtrate lift pump, the 2nd filtrate lift pump, reuse water lift pump, paint removal slag ladle stirrer, oxidation tank stirrer, a flocculation jar stirrer are electrically connected with electrical control system respectively in the middle of described.
Lift pump, the 1st filtrate lift pump and the 2nd filtrate lift pump can adopt pneumatic diaphragm pump in the middle of described.
Described conservation tank for the treatment of after clear water store.
The utility model floor space is little, and civil engineering is few, adopts the module finished product, can select reasonable configuration according to the concrete processing requirements of painting wastewater, is convenient to reduce the cost of system, and operation of equipment is convenient, and operational management is easy.
The utility model adopts quantitative dosing, filtering separation to collect sequence of operations such as lacquer slag, recirculated water backflow Paint spraying platform.
After tested, treatment effect reaches: see-through 〉=15cm, solid impurity≤1%.Though the water after the processing can not directly be drunk, can not directly externally discharge, can absorb coating cloud for Paint spraying platform and use.Lacquer slag after the processing does not have stickiness, and the lacquer slag is discharged the back as dried weight saving through draining again from system, reduces recovery cost greatly, reduces cost for wastewater treatment.Pollutants in waste water is finally removed from waste water with sludge form after treatment, and the mud that produces is the chemical treatment precipitating sludge, but otherwise processed behind the mud process sludge dewatering equipment dehydration and drying.
The medicament of the required interpolation of the utility model is not flammable, non-volatility, and the toxicological harmless composition meets the RoHS of European Union standard.
The utility model can adopt intermittent operation, can adjust start, stop time flexibly according to turnout and season, need not shut down clear pond, does not stop up water pump, pipeline, does not also influence production.
Description of drawings
Fig. 1 is that the structure of the utility model embodiment is formed synoptic diagram.
Embodiment
Referring to Fig. 1, the utility model embodiment is provided with paint removal slag ladle 1, oxidation tank 2, flocculation jar 3, conservation tank 4, middle lift pump 5, the 1st filtrate lift pump 6, the 2nd filtrate lift pump 7, reuse water lift pump 8, paint removal slag ladle stirrer 9, oxidation tank stirrer 10, a flocculation jar stirrer 11, the 1st solid-liquid separator 12, the 2nd solid-liquid separator 13, the 3rd solid-liquid separator 14 and electrical control system (not drawing in the drawings).
Described paint removal slag ladle 1, middle lift pump 5, the 1st solid-liquid separator 12, oxidation tank 2, the 1st filtrate lift pump 6, the 2nd solid-liquid separator 13, flocculation jar the 3, the 2nd filtrate lift pump 7, the 3rd solid-liquid separator 14, conservation tank 4 are connected successively with reuse water lift pump 8, and the reuse water of reuse water lift pump 8 exports external spray booth; Be provided with paint removal slag ladle stirrer 9 in the described paint removal slag ladle 1, be provided with oxidation tank stirrer 10 in the described oxidation tank 2, be provided with a flocculation jar stirrer 11 in the described flocculation jar 3; Described paint removal slag ladle 1 is provided with paint removal slag agent import, establishes pH on the oxidation tank 2 and adjusts agent, oxygenant and catalyst inlet, establishes pH on the flocculation jar 3 and adjusts agent, coagulant aids and flocculation agent import; Lift pump 5, the 1st filtrate lift pump 6, the 2nd filtrate lift pump 7, reuse water lift pump 8, paint removal slag ladle stirrer 9, oxidation tank stirrer 10, a flocculation jar stirrer 11 are electrically connected with electrical control system respectively in the middle of described.
Lift pump 5, the 1st filtrate lift pump 6 and the 2nd filtrate lift pump 7 adopt pneumatic diaphragm pump in the middle of described.
Described conservation tank 4 for the treatment of after clear water store.
Below provide working process of the present utility model: former water gravity flow at first enters in the paint removal slag ladle, and in the paint removal slag ladle, waste water fully reacts through paint removal slag ladle stirrer with the paint removal slag agent that quantitatively is added to the water.After the reaction of paint removal slag ladle, viscosity and the colourity of waste water all reduce, and waste water is promoted in the 1st solid-liquid separator through middle lift pump, and the effect of the 1st solid-liquid separator is that the lacquer slag is separated from water.The waste water gravity flow that separates behind the lacquer slag enters in the oxidation tank, adds quantitative pH and adjust agent, oxygenant and catalyzer in oxidation tank, and stirring and waste water by the oxidation tank stirrer fully react, and make the organism in the waste water carry out oxygenolysis.The effect of oxidation tank is that the organic molecule in the water is oxidized to harmless carbonic acid gas and water, thereby reduces the COD in the water, and simultaneously, colourity and viscosity further reduce.Waste water after oxidizing reaction rises to the 2nd solid-liquid separator through the 1st filtrate lift pump, and after solid-liquid separation, the waste water gravity flow enters the flocculation jar.Add quantitative pH and adjust agent, coagulant aids and flocculation agent in flocculation jar, stirring and waste water by flocculation jar stirrer fully react.The effect of flocculation jar is that waste water is carried out flocculation sediment, further reduce viscosity, colourity and the organic content of waste water, waste water after flocculation treatment is again through the 2nd filtrate lift pump to the 3 solid-liquid separators, the spray that water quality after solid-liquid separation can satisfy spray booth absorbs usefulness, can directly use to spray booth through the reuse water blowback.

Claims (2)

1. a painting wastewater closed circulation treatment system is characterized in that being provided with paint removal slag ladle, oxidation tank, flocculation jar, conservation tank, middle lift pump, the 1st filtrate lift pump, the 2nd filtrate lift pump, reuse water lift pump, paint removal slag ladle stirrer, oxidation tank stirrer, flocculation jar stirrer, the 1st solid-liquid separator, the 2nd solid-liquid separator, the 3rd solid-liquid separator and electrical control system;
Described paint removal slag ladle, middle lift pump, the 1st solid-liquid separator, oxidation tank, the 1st filtrate lift pump, the 2nd solid-liquid separator, flocculation jar, the 2nd filtrate lift pump, the 3rd solid-liquid separator, conservation tank are connected successively with the reuse water lift pump, and the reuse water of reuse water lift pump exports external spray booth; Be provided with paint removal slag ladle stirrer in the described paint removal slag ladle, be provided with the oxidation tank stirrer in the described oxidation tank, be provided with flocculation jar stirrer in the described flocculation jar; Described paint removal slag ladle is provided with paint removal slag agent import, establishes pH on the oxidation tank and adjusts agent, oxygenant and catalyst inlet, establishes pH on the flocculation jar and adjusts agent, coagulant aids and flocculation agent import; Lift pump, the 1st filtrate lift pump, the 2nd filtrate lift pump, reuse water lift pump, paint removal slag ladle stirrer, oxidation tank stirrer, a flocculation jar stirrer are electrically connected with electrical control system respectively in the middle of described.
2. a kind of painting wastewater closed circulation treatment system according to claim 1, it is characterized in that described in the middle of lift pump, the 1st filtrate lift pump and the 2nd filtrate lift pump adopt pneumatic diaphragm pump.
CN 201320070229 2013-02-06 2013-02-06 Closed cycle treatment system for paint-spraying wastewater Expired - Fee Related CN203065291U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320070229 CN203065291U (en) 2013-02-06 2013-02-06 Closed cycle treatment system for paint-spraying wastewater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320070229 CN203065291U (en) 2013-02-06 2013-02-06 Closed cycle treatment system for paint-spraying wastewater

Publications (1)

Publication Number Publication Date
CN203065291U true CN203065291U (en) 2013-07-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320070229 Expired - Fee Related CN203065291U (en) 2013-02-06 2013-02-06 Closed cycle treatment system for paint-spraying wastewater

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CN (1) CN203065291U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105884075A (en) * 2015-05-15 2016-08-24 宁波青云环保科技有限公司 Paint spraying wastewater treatment device
CN105984992A (en) * 2015-01-31 2016-10-05 福建省首融环境科技有限公司 Paint wastewater treatment method
CN105983300A (en) * 2015-01-31 2016-10-05 福建省首融环境科技有限公司 Treatment process for paint exhaust gas
CN107010703A (en) * 2017-04-21 2017-08-04 广东工业大学 A kind of method of the online water-base epoxy industrial paint recirculated water of processing in real time
CN110668602A (en) * 2019-09-30 2020-01-10 东莞市优力帕克包装有限公司 Wastewater treatment process

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105984992A (en) * 2015-01-31 2016-10-05 福建省首融环境科技有限公司 Paint wastewater treatment method
CN105983300A (en) * 2015-01-31 2016-10-05 福建省首融环境科技有限公司 Treatment process for paint exhaust gas
CN105884075A (en) * 2015-05-15 2016-08-24 宁波青云环保科技有限公司 Paint spraying wastewater treatment device
CN107010703A (en) * 2017-04-21 2017-08-04 广东工业大学 A kind of method of the online water-base epoxy industrial paint recirculated water of processing in real time
CN110668602A (en) * 2019-09-30 2020-01-10 东莞市优力帕克包装有限公司 Wastewater treatment process

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C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130717

Termination date: 20200206

CF01 Termination of patent right due to non-payment of annual fee