CN205133362U - Electroplating effluent zero release processing system - Google Patents
Electroplating effluent zero release processing system Download PDFInfo
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- CN205133362U CN205133362U CN201520949895.3U CN201520949895U CN205133362U CN 205133362 U CN205133362 U CN 205133362U CN 201520949895 U CN201520949895 U CN 201520949895U CN 205133362 U CN205133362 U CN 205133362U
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Abstract
The utility model discloses an electroplating effluent zero release processing system, including the categorised pretreatment systems of the materialization that connects gradually, biochemical integrated processing system, embrane method recycling system and membrane concentrate vaporization system to reach the mud classification system that all is connected with categorised pretreatment systems of materialization and biochemical integrated processing system, wherein, the waste water raw water gets into the categorised pretreatment systems of materialization, the water retrieval and utilization is produced to embrane method recycling system, membrane concentrate vaporization system's condensation goes out liquid and recycles the categorised pretreatment systems of materialization. The utility model discloses earlier with waste water classification, effectively get rid of the chromium in the waste water, cyanogen, nickel etc. Heavily pollute ion and oils material, then handle through biochemical integrated processing system furtherly, the two -stage compound mode of utilizing RO+SuperRO at last reaches 94% total recovery, the liquid measure that makes the evaporation handle does not simultaneously arrive 6% of total waste water volume, the cost that the evaporation was handled has been practiced thrift, still realize cyclic utilization to mud, the energy -saving water circulating system minimizes resource waste, the sludge treatment expense has also been practiced thrift.
Description
Technical field
The utility model relates to electroplating wastewater advanced treatment field, and specifically, what relate to is a kind of electroplating wastewater zero treatment system.
Background technology
The main source of electroplating wastewater has pre-treatment waste water, coating rinse water, spent plating bath and other waste water, and processing condition, the factor such as operating method and water use model of its water quality, the water yield and Electroplating Production are relevant.Due to electroplating wastewater complicated component, water quality difference is large, heavy metal content is high and poisonous and harmful, composition is wayward, wherein containing, for example heavy metal ion and prussiates etc. such as chromium, cadmium, nickel, copper, zinc, gold and silver, some belongs to carcinogenic, teratogenesis, mutagenic highly toxic substance, answer the requirement of energy-saving and emission-reduction and circular economy concept, while carrying out advanced treatment to it, need to realize micro-discharge as far as possible on the basis that process is up to standard, or even zero release.
Present stage, the process of electroplating wastewater mainly, on the basis of chemical method and physical-chemical craft, is introduced membrane separation technique, is utilized reverse osmosis membrane to realize dense water and concentrate, and follow-uply adds evaporation process, to reach the object of micro-discharge or zero release.Due to the restriction of reverse osmosis membrane antifouling property and working pressure, after comparatively harsh pre-treatment, also the rate of recovery of 50%-70% can only be reached, if and the membrane concentration liquid remaining 30%-50% will realize zero release, then need high evaporation cost, and continue to be in the actual treatment load that high-order evaporation load also adds whole technique to a certain extent.
Utility model content
For overcoming prior art Problems existing, the utility model provides that a kind for the treatment of effect is good, the electroplating wastewater zero treatment system of efficient energy-saving.
To achieve these goals, the technical solution adopted in the utility model is as follows:
A kind of electroplating wastewater zero treatment system, comprise the materialization classification pretreatment system, biochemical synthesis treatment system, embrane method reclaiming system and the membrane concentration liquid vapo(u)rization system that connect successively, and to classify the mud specification processing system that pretreatment system and biochemical synthesis treatment system be all connected with materialization, wherein, the former water of waste water enters described materialization classification pretreatment system, described embrane method reclaiming system produces Water circulation, the condensation fluid re-injection materialization classification pretreatment system of described membrane concentration liquid vapo(u)rization system.
Further, described materialization classification pretreatment system comprises the cyanide wastewater collecting tank being respectively used to collect corresponding waste water, chromate waste water collecting tank, nickel-containing waste water collecting tank and pre-treatment wastewater collection pond, the broken cyanide oxidizing reaction pond be connected with cyanide wastewater collecting tank, the broken chromium reduction reactor be connected with chromate waste water collecting tank, the contact break oxidizing reaction pond be connected with nickel-containing waste water collecting tank, the air-floating apparatus be connected with pre-treatment wastewater collection pond, and with broken cyanide oxidizing reaction pond, broken chromium reduction reactor, the comprehensive adjustment pond that contact break oxidizing reaction pond and air-floating apparatus are all connected, wherein, comprehensive adjustment pond is connected with biochemical synthesis treatment system, described with broken cyanide oxidizing reaction pond, broken chromium reduction reactor, contact break oxidizing reaction pond is also all connected with mud specification processing system with air-floating apparatus.
Further, described biochemical synthesis treatment system comprises the electrochemical reactor, coagulating sedimentation unit, A/O biochemical system and the second pond that connect successively, wherein, electrochemical reactor is connected with comprehensive adjustment pond, the supernatant liquor of second pond enters embrane method reclaiming system, its sludge reflux is to A/O biochemical system, and described coagulating sedimentation unit is also connected with mud specification processing system.A/O is anoxic/aerobic.
Particularly, described A/O biochemical system comprises biochemistry pool and is arranged at least one the A/O processing section in biochemistry pool, and wherein the water inlet of biochemistry pool comes from coagulating sedimentation unit, and water outlet is to second pond.
Further, described embrane method reclaiming system comprises the ultra-filtration membrane device, rolling type reverse osmosis membrane device and the SuperRO film device that connect successively, wherein, the water inlet of ultra-filtration membrane device comes from second pond supernatant liquor, the generation reuse of rolling type reverse osmosis membrane device and SuperRO film device, the dense water of rolling type reverse osmosis membrane device enters SuperRO film device, and the dense water of SuperRO film device enters membrane concentration liquid vapo(u)rization system.The reverse osmosis membrane device that it is core that described SuperRO film device adopts with same end Inlet and outlet water filtering membrane post.
More specifically, described membrane concentration liquid vapo(u)rization system adopts MVR vaporizer, and its evaporation condensate is back to comprehensive adjustment pond, residue on evaporation outward transport landfill disposal.MVR is the abbreviation of mechanical steam recompression technology (mechanicalvaporrecompression).
Further, described mud specification processing system comprises the first sludge thickener be connected with broken chromium reduction reactor, the the first high pressure sheet frame be connected with the first sludge thickener, the second sludge thickener be connected with contact break oxidizing reaction pond, the the second high pressure sheet frame be connected with the second sludge thickener, with broken cyanide oxidizing reaction pond, the 3rd sludge thickener that air-floating apparatus and coagulating sedimentation unit are all connected, and the third high plate frame to be connected with the 3rd sludge thickener, wherein, the filtrate of the first sludge thickener is back to chromate waste water collecting tank, the filtrate of the second sludge thickener is back to nickel-containing waste water collecting tank, the filtrate of the 3rd sludge thickener is back to comprehensive adjustment pond, the filter cake of three sludge thickeners all transports outward landfill disposal.
Compared with prior art, the utility model has following beneficial effect:
(1) the utility model is first by classification of waste process, chromium in effective removal waste water, cyanogen, heavily contaminated ion and the oily substances such as nickel, clearance reaches more than 90%, then processed further by biochemical synthesis treatment system, the two-stage array mode of RO+SuperRO is finally utilized to reach the total yield of 94%, make the liquid measure of evaporation process less than 6% of total wastewater flow rate simultaneously, greatly save the cost of evaporation process, the mode of mud classification is also adopted to reclaim mud further, realize recycle, avoid the wasting of resources, also save sludge treatment expense, and the utility model is novel, structure is simple, with low cost, convenient and practical, be with a wide range of applications, be applicable to applying.
(2) the utility model is removed the cyanogen in waste water, chromium, nickel, copper, zinc plasma further by electrochemical reactor and coagulating sedimentation unit, improve the biodegradability of waste water, so that by which better the process of A/O biochemical system, thus the majority of organic pollutants effectively removed in waste water, greatly reduce waste water COD content.
(3) the utility model also arranges uf processing before reverse-osmosis treated, has effectively ensured the influent quality of reverse osmosis, improves the processing efficiency of reverse osmosis membrane device, extends its work-ing life.
(4) the dense water of the utility model to reverse osmosis carries out high-efficiency evaporating, improves resource utilization, avoids waste, also carries out ultimate attainment decrement treatment to mud simultaneously, realize wastewater utilization, fully circulate.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present utility model.
Fig. 2 is the structured flowchart of materialization classification pretreatment system in the utility model.
Fig. 3 is the structured flowchart of the utility model mud specification processing system.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail, and embodiment of the present utility model includes but not limited to the following example.
Embodiment
As shown in Figure 1 to Figure 3, this electroplating wastewater zero treatment system, comprise the materialization classification pretreatment system, biochemical synthesis treatment system, embrane method reclaiming system and the membrane concentration liquid vapo(u)rization system that connect successively, and to classify the mud specification processing system that pretreatment system and biochemical synthesis treatment system be all connected with materialization, wherein, the former water of waste water enters described materialization classification pretreatment system, described embrane method reclaiming system produces Water circulation, the condensation fluid re-injection materialization classification pretreatment system of described membrane concentration liquid vapo(u)rization system.
Further, described materialization classification pretreatment system comprises the cyanide wastewater collecting tank being respectively used to collect corresponding waste water, chromate waste water collecting tank, nickel-containing waste water collecting tank and pre-treatment wastewater collection pond, the broken cyanide oxidizing reaction pond be connected with cyanide wastewater collecting tank, the broken chromium reduction reactor be connected with chromate waste water collecting tank, the contact break oxidizing reaction pond be connected with nickel-containing waste water collecting tank, the air-floating apparatus be connected with pre-treatment wastewater collection pond, and with broken cyanide oxidizing reaction pond, broken chromium reduction reactor, the comprehensive adjustment pond that contact break oxidizing reaction pond and air-floating apparatus are all connected, wherein, comprehensive adjustment pond is connected with biochemical synthesis treatment system, described with broken cyanide oxidizing reaction pond, broken chromium reduction reactor, contact break oxidizing reaction pond is also all connected with mud specification processing system with air-floating apparatus.
Further, described biochemical synthesis treatment system comprises the electrochemical reactor, coagulating sedimentation unit, A/O biochemical system and the second pond that connect successively, wherein, electrochemical reactor is connected with comprehensive adjustment pond, the supernatant liquor of second pond enters embrane method reclaiming system, its sludge reflux is to A/O biochemical system, and described coagulating sedimentation unit is also connected with mud specification processing system.A/O is anoxic/aerobic.Particularly, described A/O biochemical system comprises biochemistry pool and is arranged at least one the A/O processing section in biochemistry pool, and wherein the water inlet of biochemistry pool comes from coagulating sedimentation unit, and water outlet is to second pond.
Further, described embrane method reclaiming system comprises the ultra-filtration membrane device (UF), rolling type reverse osmosis membrane device (RO) and the SuperRO film device that connect successively, wherein, the water inlet of ultra-filtration membrane device comes from second pond supernatant liquor, the generation reuse of rolling type reverse osmosis membrane device and SuperRO film device, the dense water of rolling type reverse osmosis membrane device enters SuperRO film device, and the dense water of SuperRO film device enters membrane concentration liquid vapo(u)rization system.The reverse osmosis membrane device that it is core that described SuperRO film device adopts with same end Inlet and outlet water filtering membrane post.Particularly, this SuperRO film device comprises the pressurized vessel that end is connected by flange seal, be arranged at the fluid inlet on pressurized vessel and the first liquid outlet, be arranged at the several flow guiding disc and filtration membrane that are also mutually stacked alternately in pressurized vessel, run through all flow guiding discs and filtration membrane from middle part and pass the center pull rod that pressurized vessel two end flanges arranges, wherein, center pull rod is tubular, and with the through hole be communicated with flow guiding disc on its wall, its end forms the second liquid outlet.
More specifically, described membrane concentration liquid vapo(u)rization system adopts MVR vaporizer, and its evaporation condensate is back to comprehensive adjustment pond, residue on evaporation outward transport landfill disposal.MVR is the abbreviation of mechanical steam recompression technology (mechanicalvaporrecompression).
Further, described mud specification processing system comprises the first sludge thickener be connected with broken chromium reduction reactor, the the first high pressure sheet frame be connected with the first sludge thickener, the second sludge thickener be connected with contact break oxidizing reaction pond, the the second high pressure sheet frame be connected with the second sludge thickener, with broken cyanide oxidizing reaction pond, the 3rd sludge thickener that air-floating apparatus and coagulating sedimentation unit are all connected, and the third high plate frame to be connected with the 3rd sludge thickener, wherein, the filtrate of the first sludge thickener is back to chromate waste water collecting tank, the filtrate of the second sludge thickener is back to nickel-containing waste water collecting tank, the filtrate of the 3rd sludge thickener is back to comprehensive adjustment pond, the filter cake of three sludge thickeners all transports outward landfill disposal.
Concrete treating processes of the present utility model is as follows:
(1) electroplating enterprise implements classified emission when discharge of wastewater, cyanide wastewater, chromate waste water, nickel-containing waste water and pre-treatment waste water are collected to respectively corresponding collecting tank, and process respectively, namely by broken cyanide oxidizing reaction pond, the process of secondary oxidation broken cyanide is carried out to cyanide wastewater, by broken chromium reduction reactor, chromium process is carried out brokenly to chromate waste water, by contact break oxidizing reaction pond, contact break process is carried out to nickel-containing waste water, adopt medicament PAM (polyacrylamide)+PAC (polymerize aluminum chloride) to carry out oil removal treatment to pre-treatment waste water by air-floating apparatus.
(2) the various waste water of classification process mix in comprehensive adjustment pond.
(3) composite waste takes out part heavy metal ion further through electrochemical reactor, part metals ion, organism and suspended substance is removed again through coagulating sedimentation unit, enter A/O biochemical system afterwards, the majority of organic pollutants in waste water is removed by the respiration of microorganism in A/O biochemical system, CDO content is down to below 22mg/L, water outlet enters second pond and precipitates further, and the sludge reflux of second pond is to A/O biochemical system, and supernatant liquor then enters membranous system.
(4) reach the influent quality requirement of rolling type reverse osmosis membrane device through the pre-treatment of ultra-filtration membrane device from the supernatant liquor of second pond, water direct reuse will be produced by rolling type reverse osmosis membrane device, and dense water enters SuperRO film device is separated further, SuperRO film device produces water can direct reuse, and dense water then enters MVR vaporizer and is for further processing.The rate of recovery of rolling type reverse osmosis membrane device is the rate of recovery of 70%, SuperRO film device is 80%, and the total yield of embrane method reclaiming system reaches 94%.
(5) carry out high-efficiency evaporating by the dense water of MVR vaporizer to SuperRO film device, be sent to comprehensive adjustment pond and carry out circular treatment after evaporation condensate, residue on evaporation is then entrusted outer process, is generally outward transport landfill.Vaporizer treatment capacity is not higher than 6% of the former water yield.
(6) chromium-bearing sludge, nickel-containing sludge and other mud are carried out ultimate attainment decrement treatment respectively by high pressure sheet frame by mud specification processing system, sludge moisture content is down to less than 60%, then the outer process of committee, be generally outward transport landfill, filtrate is then sent to corresponding chromate waste water collecting tank, nickel-containing waste water collecting tank and comprehensive adjustment pond and is carried out circular treatment.
Carry out water treatment test of the present utility model at certain electroplating enterprise, the related data of acquisition is as shown in following table 1-3:
| Title | CODcr | Cryanide ion | Total chromium | Total copper | Total nickel | Total zinc | Oils | PH value |
| Comprehensive wastewater | ≤250 | — | ≤0.05 | ≤100 | ≤20 | ≤50 | — | 3-5 |
| Pre-treatment (soda acid) waste water | ≤600 | — | ≤0.05 | ≤10 | ≤10 | ≤20 | ≤100 | 2-5 |
| Cyanide wastewater | ≤300 | ≤150 | ≤0.05 | ≤100 | ≤20 | ≤30 | — | 6-8 |
| Chromate waste water | ≤200 | — | ≤100 | ≤20 | — | ≤30 | — | 3-5 |
| Nickel-containing waste water | ≤200 | — | ≤0.05 | ≤15 | ≤100 | ≤20 | — | 3-5 |
| Chemical nickle-plating wastewater | ≤200 | — | ≤0.05 | ≤15 | ≤50 | ≤20 | — | 3-5 |
The each Pollutant levels table look-up of table 1, unit mg/L, pH zero dimension
Table 2 pre-treatment workshop section pollutant removal table
Table 3 composite waste pollutant removal table
Known by testing, the utility model has excellent water treatment effect.
Above-described embodiment is only preferred embodiment of the present utility model; restriction not to the utility model protection domain; in every case principle of design of the present utility model being adopted, and the change carried out non-creativeness work on this basis and make, all should belong within protection domain of the present utility model.
Claims (7)
1. an electroplating wastewater zero treatment system, it is characterized in that, comprise the materialization classification pretreatment system, biochemical synthesis treatment system, embrane method reclaiming system and the membrane concentration liquid vapo(u)rization system that connect successively, and to classify the mud specification processing system that pretreatment system and biochemical synthesis treatment system be all connected with materialization, wherein, the former water of waste water enters described materialization classification pretreatment system, described embrane method reclaiming system produces Water circulation, the condensation fluid re-injection materialization classification pretreatment system of described membrane concentration liquid vapo(u)rization system.
2. a kind of electroplating wastewater zero treatment system according to claim 1, it is characterized in that, described materialization classification pretreatment system comprises the cyanide wastewater collecting tank being respectively used to collect corresponding waste water, chromate waste water collecting tank, nickel-containing waste water collecting tank and pre-treatment wastewater collection pond, the broken cyanide oxidizing reaction pond be connected with cyanide wastewater collecting tank, the broken chromium reduction reactor be connected with chromate waste water collecting tank, the contact break oxidizing reaction pond be connected with nickel-containing waste water collecting tank, the air-floating apparatus be connected with pre-treatment wastewater collection pond, and with broken cyanide oxidizing reaction pond, broken chromium reduction reactor, the comprehensive adjustment pond that contact break oxidizing reaction pond and air-floating apparatus are all connected, wherein, comprehensive adjustment pond is connected with biochemical synthesis treatment system, described with broken cyanide oxidizing reaction pond, broken chromium reduction reactor, contact break oxidizing reaction pond is also all connected with mud specification processing system with air-floating apparatus.
3. a kind of electroplating wastewater zero treatment system according to claim 2, it is characterized in that, described biochemical synthesis treatment system comprises the electrochemical reactor, coagulating sedimentation unit, A/O biochemical system and the second pond that connect successively, wherein, electrochemical reactor is connected with comprehensive adjustment pond, the supernatant liquor of second pond enters embrane method reclaiming system, and its sludge reflux is to A/O biochemical system, and described coagulating sedimentation unit is also connected with mud specification processing system.
4. a kind of electroplating wastewater zero treatment system according to claim 3, it is characterized in that, described A/O biochemical system comprises biochemistry pool and is arranged at least one the A/O processing section in biochemistry pool, and wherein the water inlet of biochemistry pool comes from coagulating sedimentation unit, and water outlet is to second pond.
5. a kind of electroplating wastewater zero treatment system according to claim 3, it is characterized in that, described embrane method reclaiming system comprises the ultra-filtration membrane device, rolling type reverse osmosis membrane device and the SuperRO film device that connect successively, wherein, the water inlet of ultra-filtration membrane device comes from second pond supernatant liquor, the generation reuse of rolling type reverse osmosis membrane device and SuperRO film device, the dense water of rolling type reverse osmosis membrane device enters SuperRO film device, and the dense water of SuperRO film device enters membrane concentration liquid vapo(u)rization system.
6. a kind of electroplating wastewater zero treatment system according to claim 5, is characterized in that, described membrane concentration liquid vapo(u)rization system adopts MVR vaporizer, and its evaporation condensate is back to comprehensive adjustment pond, residue on evaporation outward transport landfill disposal.
7. a kind of electroplating wastewater zero treatment system according to claim 6, it is characterized in that, described mud specification processing system comprises the first sludge thickener be connected with broken chromium reduction reactor, the the first high pressure sheet frame be connected with the first sludge thickener, the second sludge thickener be connected with contact break oxidizing reaction pond, the the second high pressure sheet frame be connected with the second sludge thickener, with broken cyanide oxidizing reaction pond, the 3rd sludge thickener that air-floating apparatus and coagulating sedimentation unit are all connected, and the third high plate frame to be connected with the 3rd sludge thickener, wherein, the filtrate of the first sludge thickener is back to chromate waste water collecting tank, the filtrate of the second sludge thickener is back to nickel-containing waste water collecting tank, the filtrate of the 3rd sludge thickener is back to comprehensive adjustment pond, the filter cake of three sludge thickeners all transports outward landfill disposal.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105271622A (en) * | 2015-11-25 | 2016-01-27 | 成都美富特膜科技有限公司 | Technique and system for zero discharging treatment of electroplating effluent |
| CN109626727A (en) * | 2018-12-25 | 2019-04-16 | 苏州依斯倍环保装备科技有限公司 | A kind of Zero discharge treatment method and system machining waste water |
| CN110835199A (en) * | 2019-12-03 | 2020-02-25 | 苏州他山石环保科技有限公司 | Electroplating wastewater zero-discharge treatment system and treatment process thereof |
| CN116262652A (en) * | 2022-10-08 | 2023-06-16 | 杭州鲲宸环境科技有限公司 | Wire saw processing wastewater treatment system |
-
2015
- 2015-11-25 CN CN201520949895.3U patent/CN205133362U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105271622A (en) * | 2015-11-25 | 2016-01-27 | 成都美富特膜科技有限公司 | Technique and system for zero discharging treatment of electroplating effluent |
| CN109626727A (en) * | 2018-12-25 | 2019-04-16 | 苏州依斯倍环保装备科技有限公司 | A kind of Zero discharge treatment method and system machining waste water |
| CN110835199A (en) * | 2019-12-03 | 2020-02-25 | 苏州他山石环保科技有限公司 | Electroplating wastewater zero-discharge treatment system and treatment process thereof |
| CN116262652A (en) * | 2022-10-08 | 2023-06-16 | 杭州鲲宸环境科技有限公司 | Wire saw processing wastewater treatment system |
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Address after: Jintang County of Chengdu City, Sichuan province 610000 Huai town Jintang Industrial Park Green Avenue Patentee after: Chengdu Environmental Protection Industry Group Co.,Ltd. Foote Address before: Jintang County of Chengdu City, Sichuan province 610000 Huai town Jintang Industrial Park Green Avenue Patentee before: CHENGDU MEIFUTE MEMBRANE TECHNOLOGY Co.,Ltd. |
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Address after: 610000 environmental protection Avenue, Jintang Industrial Park, huaikou Town, Jintang County, Chengdu, Sichuan Patentee after: Chengdu Meifute Environmental Protection Industry Co.,Ltd. Address before: 610000 environmental protection Avenue, Jintang Industrial Park, huaikou Town, Jintang County, Chengdu, Sichuan Patentee before: Chengdu Environmental Protection Industry Group Co.,Ltd. Foote |
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