Electrophoresis equipment do environmental protection

Environmental protection is the eternal theme of today's society, the relationship between us and the offspring's health. Therefore, in our painting production cannot go after pollution of the old road, must solve the problem of environmental pollution from the source, the amount of pollutants produced to a minimum. Now people have pay more and more attention to environmental protection. Many of the projects, because of environmental problems ultimately can't project. Electrophoresis equipment for traditional electroplating, dusting,painting equipment, is a way of painting the most environmentally friendly, but there are still a few trace contamination, direct emission is certainly not. Howdo electrophoresis to achieve environmental protection?

At present the main source of electrophoresis coating of environmental pollution is the waste water, so how to pollutant generation and emissions has become a direction of current is reduced in the planning and design ofpainting. Pretreatment of electrophoresis coating as a comprehensive pollutionheaviest process, has a very important significance to reduce the pollution intensity. To reduce pollutants must start from the source, start by changing the production process and materials, recycling and unified management etc..

A, use of new materials and new technology more environmentally friendly.

The development direction of pretreatment electrophoresis process for lowenergy consumption, low cost, low pollution, the production process will drive the development trend of production materials, at present, new material and new technology have been in the area of environmental protection has made great progress.

By 1, no P, no N and environment-friendly degreasing agent biological degradation, its use of silicate instead of seriously polluted the environment byphosphate, surfactant biodegradation.

2 with six zirconium fluoride passivating liquid substitute chromium passivationliquid, the passivation effect is good, easy to wastewater treatment, has been widely used in Europe and the United States joint venture. At the same time as the phosphating in improving material performance, no passivation processhas been able to meet the requirements of automotive corrosion, in the domestic automobile enterprises, such as Japan and South Korea automobileenterprise basic no passivation process.

3 silane technology to replace the traditional surface conditioning, phosphating and passivation technology, as a new material of low temperature and lowresidue, is the new development direction of pretreatment technology. Silane technology has been used in Europe and the United States home applianceand automobile parts enterprises, instead of the traditional phosphatingprocess. At the same time and electrophoresis material manufacturers jointmatching experiment, has made gratifying progress, if we can prove that can meet the requirements of vehicle corrosion protection, is a historic breakthrough in automobile coating environmental protection will be.

4 with low solvent content, lead-free, Wuxi, pigment and binder ratio new environment-friendly electrophoresis paint low. VSK series of electrophoretic paint Zhibang company are environment-friendly electrophoresis paint SGSand ROHS testing, in line with the EU and the United States environmental protection standard.

Two, the introduction of some of the necessary equipment

Recycling and reuse of wastewater is mainly to improve water use efficiency,prolong the using period of the bath. At present, take on the device measures are: adopt efficient degreasing, slag removal equipment, exchange resinregeneration technology of waste water recycling technology and membrane separation.

Membrane separation technology in coating pretreatment electrophoresiswastewater reuse, has been widely used PT-RO technology, ED-RO,electrophoresis, ultrafiltration, these devices enable the coating quality and environmental protection achieved great success, but the EUF system at present the electrophoresis system to achieve another breakthrough truly zero emissions.

After electrophoresis is traditional washing process through the overflow afterflushing pure water to meet the requirements of process control of electrical conductivity, cleaning water containing electrophoretic paint solids is about 0.03%, the discharge of wastewater containing electrophoretic paint, causing huge waste, but also increase the difficulty of wastewater treatment. The EUF system by the pure water tank overflow sewage collection in concentratedgroove, by concentrating the pump will slot liquid conveying to the separationof ultrafiltration membrane group, wherein the water and solvent moleculesthrough the ultrafiltration membrane, electrophoresis paint and accessorymolecules are entrapped concentrated groove, return. Through the liquid can be used as the raw water and pure water pretreatment processes for the use of, also can be mixed with fresh water used as fresh spray through the liquidconductivity due to about 150 mu s/cm, so the mixed liquid through the liquid content should not exceed 20%; cycle of concentration tank liquid continuouslyconcentrated tank, concentrated groove is provided with a concentration detecting device, when the concentration the solids set value is reachedthrough the transfer of pump back the electrophoresis tank. The EUF system allows the recovery of filter electrophoresis paint from the original 96% to100%. At the same time, EUF system can be inverted when residualelectrophoretic liquid and cleaning water tank recovery concentrate, recovery of electrophoretic paint. The system is configured with pH adjustment system,which can accurately control the PH in the process of range, membrane groupand for the use of ultrafiltration membrane, more suitable for acidic mediumthan RO film, longer service life. Using EUF electrophoresis system compared with traditional electrophoresis system has the following advantages:

The ascent to 100% electrophoretic paint recovery rate of A. production,saving the use amount of electrophoretic paint 4%;

B. membrane permeation liquid as industrial water use, saving industrial water consumption;

C. reduce wastewater discharge electrophoresis system volume, cleaningwater discharge of water is only membrane group system