Steel drum painting lacquer water separation process and common problem treatment
Wen/Yang Champion
(Xi'an Jiexing Chemical Technology Co., Ltd.)
Advantages of GJ-801 type paint water separating agent (polycondensation) product: no need to adjust PH value, adapt to a wide range of PH, no neutralizer, easy to operate, avoid corrosion of water tank by strong alkalinity water body, extend equipment The service life, the paint removal rate reaches 100%, the residual paint is fully coagulated together, and the water can be recycled for a second time to reduce the cost.
1. GJ-801 type paint water separating agent (polycondensation) A agent: It is a special treatment agent for decomposing and removing the viscosity of various paints. The main component is a special organic compound, especially suitable for circulating water system in spray booth. Add to decompose to remove residual paint and control biological activity.
A. Features: This product is suitable for use in water-based and oil-based paints (mixed).
1. Improve the service life of circulating water and reduce the frequency of clearing.
2. Reduce the COD content in wastewater and reduce the cost of wastewater treatment.
3. The paint residue has no secondary pollution and meets the general waste standard.
4. The spray booth is easy to clean and maintain, and it is not easy to block the circulation pump.
B, physical properties: the appearance of pale pink liquid
PH: 6.5 ~ 7. 5
Specific gravity: ~1.03
Viscosity: none
Flash point: >93°C (>20 OF)
Freezing point: 0 ° C (32 OF)
Second, GJ-801 type paint water separating agent (polycondensation) B agent: It is a special polymer compound, which can condense the paint residue and float it for easy removal.
A, features:
1. This product is suitable for all kinds of solid/liquid floating separation.
2. Effectively applied to a wide range of PH.
B, physical properties: Appearance: transparent micro-viscous liquid
PH: 3 to 4
Specific gravity: ~1.0
Flash point: non-combustible
Freezing point: -3 ° C (27 OF)
Viscosity: ~100CPS
C. Packaging and storage:
1, 25kg plastic bucket
2. Do not store in metal containers.
3. Do not place in an environment below 0 °C.
D. Precautions: Do not inhale and swallow. If it is in contact with skin, rinse it off with water.
Third, the paint water separating agent process
1. A agent is added to the paint tank according to 5‰: circulating water pump inlet; so that the paint water separating agent can enter the spray booth evenly, react with the spray mist of the overspray for the first time to remove the viscosity of the paint, and the fine particles are dispersed in the water;
2. The B agent is added to the paint tank according to 5 :: the water return pipe of the pool, the fine particles dispersed by the A agent are condensed, so that it condenses and floats in the pool to achieve the goal of circulating water purification;
3. Paint water separating agent operation instructions
A. Note: If the PH value of the system is too high (pH>9.0), the water quality of the system may appear turbid or blistering.
Solution:
(1) Please replace with fresh water until the pH value is below 9.0, or replace the potion GJ-801.
(2) Add 10~20PPM defoamer (in the case of serious bubbles)
B. When the A agent is added too much, it will cause the following phenomena:
(1) The paint residue will become muddy and will have a slight blistering.
(2) The paint slag is excessively damaged, resulting in a turbid water quality.
(3) The effect of suspension and agglomeration of paint residue is deteriorated.
Solution:
(1) Adjust the flow rate of the dosing machine appropriately. Or reduce the amount of manual addition.
(2) Check the pipeline for siphoning, resulting in excessive dosing.
(3) Whether the dosing machine continues to operate due to the shutdown of the spray booth, and personnel management needs to be strengthened.
C. When the A agent is insufficient, the following phenomena will occur:
(1) The paint residue will have a sticky hand.
(2) The concentration of VOC (organic gas) in the spray booth increases.
Solution:
(1) Check if the dosing machine is idling, and the agent is not sent to the system.
Inspection focus:
a. Is the injection head blocked?
b. Whether the pipeline is off
c. Whether the check valve is blocked before and after the dosing machine
d. Whether the suction end is empty, please refill the water to do the upper and lower suction action until the liquid enters the PUMP head.
(2) Appropriately adjust the dosage until the paint residue does not stick to the hand, or according to the treatment effect of the paint residue that the factory can withstand, to avoid the cost is too high. If it is added manually, it is necessary to increase the amount of agent A added.
4. When the suspended paint residue is loosely aggregated or the water quality is turbid, if the agent B is insufficient, increase the dosage of the drug to the appropriate amount. If the paint slag sinks, the B agent is insufficiently added or the B agent is added too fast.
Solution: slow down the addition rate of B agent, increase the stirring or aeration of pool water.
5. The paint residue treated by the paint water separating agent is not sticky or odorous, and has good dehydration. It is a general working waste. It is recommended to be packed in a woven bag. After the water content in the paint residue is reduced to the minimum, please pass the qualified waste disposal company. Clearing and processing can reduce the cost of waste removal.
four. Paint water separating agent effect confirmation
Detected value
Detection method
PH value
≤9.0
PH test paper
Water quality perspective
≥10CM
Perspective instrument
TDS (total dissolved solids)
≤1200PPM
TDS instrument
Paint residue
Scattered, dull
Visual inspection
Fives. Paint water separating agent after-sales service plan
In order to properly use the paint water separating agent in the circulating water of the spray booth to ensure the use effect of the medicament, the company provides a complete set of after-sales service commitments as follows:
1. After-sales service:
Actually, depending on the use of the site, it is generally 2 times/month.
2. Service content:
a. Check if the dosing equipment is running normally, and whether the pipeline and bottom valve are blocked, to ensure the normal operation of the dosing system.
b. Adjust the medicament in a timely manner, and timely adjust the treatment according to the actual water lacquer slag condition to ensure the treatment effect and the most economic benefit of the medicament.
c. Dosing equipment and pipeline inspection.
d. Provide suggestions for improvement.
Ningbo XISXI E-commerce Co., Ltd , https://www.petspetstoys.com