A chemical degreaser is a device used to treat wastewater with low oil content and concentration. By adding chemical agents and mixing them, the oil and suspended solids in the water are separated and settled through coagulation and flocculation, achieving the goal of purifying water quality. It consists of a conical flow guide, a water blocking partition, a set of water blocking partitions, an overflow water return tank, a water blocking partition support, an oil-water separation baffle, a sewage storage tank, a dosing device, etc.
brief introduction
Generally, the chemical components (chemical substances and water mixed in a certain proportion) in the dosing device are introduced into a container, which is equipped with a impeller and a matching motor. The motor drives the impeller to mix the sewage and chemicals evenly, and then separate the oil, suspended solids, etc. through coagulation and sedimentation. Generally, impellers are also installed in the dosing device, mainly to mix the medicine and water evenly.
characteristic
There is a water distributor in the middle of the upper part of the chemical degreaser, and there are water blocking baffle groups around the horizontal direction of the water distributor. Above the water blocking baffle group, an oil-water separation baffle plate is designed, and a sewage storage tank is located in the center of the oil-water separation baffle plate.
equipment performance
Main technical parameters of the equipment
1) Water quality before treatment
Suspended solids<=200mg/l
Oil<=50mg/l
Water temperature<=50 ° C
2) Processed water quality
Suspended solids ≤ 20mg/l
Oil ≤ 10mg/l
Equipment spare parts
1. Oil remover equipment body;
2. Stairs;
3. Platform;
4. Railing;
5. Blender;
6. Mixing room;
7. Reaction chamber;
8. Packing bracket, side cow leg support, etc;
9. Filler PVC;
10. Electric control box;
11. Throttle valve, check valve, gate valve, motor and reducer, water pump, pipeline, steel, flow meter, etc;
12. Rust proof paint, asphalt paint, etc;
13. Dosing device: including solution tank, dissolution tank, metering pump, internal pipeline, manual valve, base accessories, etc;
14. If necessary, a manhole can be opened at the bottom of the side for maintenance purposes. It can be welded out with a DN500 pipeline and sealed with a flange cover.
Generally, the dosing device is not placed on the degreaser body, but is placed separately, mainly considering the initial construction difficulty (including installation and maintenance), as well as the difficulty of workers dosing and the placement of drugs.
technical standard
1. Technical Conditions for Manufacturing Water Treatment Equipment JB/T2932-96
2. Technical Conditions for High Quality Carbon Steel Structures GB899-1988
3. Rust grades and rust removal grades of steel surfaces before painting GB/T8923-1998
4. Pressure Vessel Painting, Packaging, and Transportation JB2536-1980
5. Welding Standard for Steel Structural Components JB2880-81
6. Flange Manufacturing Standard GB9119-88
special requirements
Full welding is required between steel plates, especially on the surrounding side baffles, both inside and outside. The entire shell must be coated with asphalt paint, and only after the paint is dry can water be injected to detect the presence of welds. For the intermediate packing, it is best to arrange it evenly and not offset one side to avoid the packing tilting sideways during the oil removal stage, which may affect the service life of the packing. It is recommended to install a shield outside the motor casing to prevent water, rain, snow, etc. from entering the motor and causing it to burn out. The general service life of fillers is one year, and after one year, it is necessary to inspect and maintain the internal components of the oil remover. Select steel plates of corresponding thickness for chemical degreasers of different tonnages. Select a valve with appropriate pressure, such as a water pressure of 9KG, and choose a valve with 10KG, which is PN1.0MPa. The overflow baffle on one side of the drainage outlet should be at the same height as the one on the opposite side.