gls bolts tank

gls bolts tank development background

The construction of sewage treatment cost investment is a very important factor. The standard of advanced water treatment technology should be suitable for China's national conditions, high efficiency, low consumption and low cost of sewage treatment technology.

At present, reinforced concrete pools and steel structure tanks commonly used in China's sewage treatment works do not have this. The construction technology of steel mixing pond is complex, long period, complicated structure design and high cost.

gls bolts tank is not suitable for medium and small sewage treatment engineering, but the construction quality of steel structure welding tank is difficult to guarantee, and the anticorrosion performance is poor, the service life is short, and the capacity of the tank is small; the above two kinds of counter devices have certain limitations.

A certain degree of standardized design and equipment of sewage treatment is an effective way to reduce costs and improve efficiency.

The advanced countries such as Germany, France and Czech began to use new equipment, new materials and new technologies to design and build urban sewage and industrial wastewater treatment projects in 70s. The technology of gls bolts tank is one of them.

The gls bolts tank steel sheet is built into a volume 50-10000m3 reactor by special technology and equipment. Through several decades of engineering verification, the technology has the advantages of short construction period, low cost, strong corrosion resistance, arbitrary expansion and movement and so on, so that the sewage plant has reached the target of less investment, rapid production and relocating.

In order to develop a combination of technology and manufacturing technology, the State Environmental Protection Administration (State Environmental Protection Administration) has a complete set of urban sewage and industrial wastewater treatment equipment with high technology content. The "research and development of high efficiency unit treatment equipment" is listed as the "95" key industry.

Sewage depth treatment refers to the further water treatment process in which sewage or industrial wastewater is treated as a water resource for production or living in order to achieve a certain water reuse standard after the first and two stages of municipal wastewater treatment. In view of the requirements of raw water quality and treated water quality of sewage (wastewater), three stage treatment or multistage treatment process can be further adopted.

Commonly used to remove trace amounts of COD and BOD organic pollutants, SS and nitrogen and phosphorus, high concentrations of nutrients and salts.

Food storage tank

The methods of depth treatment include: flocculation precipitation, sand filtration, activated carbon, ozone oxidation, membrane separation, ion exchange, electrolysis, wet oxidation, evaporation concentration and other physical and chemical methods, such as biological denitrification and dephosphorization. The advanced treatment method is expensive, and the management is complex. The cost per ton of water is about 4-5 times that of the first level treatment.

gls bolts tank installation

1. gls bolts tank material handling:

During construction, gls bolts tank steel plates should be wrapped in old blankets if they need to convey gls bolts tank sheets for long distance. When installing, the steel plate should be erected first, and the hooked hook should be carried by the self-made hook. When carrying, it is necessary to protect enamel from enamel and avoid knocking.

2. gls bolts tank groups of plates：

When the gls bolts tank plate is produced, each plate has two corners, and the uncut corner is placed in the upper left corner (outside the tank) in order to avoid the end of the plate. The gls bolts tank plate is installed in order from top to bottom, first to install the upper layer of the top, and first to install the plate according to the size of the tank first. Before installation, we should first use cotton yarn to clean the plate, check whether there is the enamel phenomenon, and the big plate should not be installed.

At the time of installation, the parts of the gls bolts tank plate fastener are cleaned with cotton yarn dipping acetone, and a sticker is attached to the bolt between the transverse joints of the tank to ensure the thickness of the glue at the transverse seam.

Then the sealant is hit from top to bottom near the screw hole, the sealant is scraped flat with the scraper, and the other plate is fitted to the hole position. It must be positioned with a self-made positioning tool to prevent the dislocation of the hole position, and it is difficult to dock.

After setting the position, a few bolts on the middle and lower parts of the board are set first. When the bolt is bolt, the screw is worn out of the tank, the gasket, the nut is set on, the wall is positioned, the rest is upright on the bolt, and the electric hand is fixed to the bolt once. Position.

After the first floor panel is assembled, the stirrup is installed. The 2388mm galvanized stirrups should be connected to the joint between the joints and the 400mm galvanized stirrup should be used in the middle. Attention should be paid to strength and order when bolts are screwed. They should be horizontal and vertical.After loading the first ring plate, connect the tank column with the seams of the tank, connect the chain with the motor and the column, connect the power supply, start the motor, lift the first ring plate to the height of 1.3 to 1.4 meters, so that it is convenient to install the second ring plate.

After the lifting, the bolt position at the bottom of the plate is cleaned with acetone, and then a secret is placed along the bolt position. Seal the tape and scrape it flat with a scraper. Two people use the self-made tool to lift the plate. Two people use the positioning tool to position the board and the upper layer, and then start the bolt. The rest of the operation program is the same as the first ring board, and the bolt is buckled after the bolt is good.After the whole tank is assembled, the tank is put down, the bottom hoop is connected with the tank, the connecting part needs to be filled with the sealant, and then the stirrup and the tank foundation are fixed with the expansion bolt.

3. gls bolts tank smear of sealant:

The dispensing diameter of the injection gun nozzle depends on the construction requirements. The sealant is continuously injected and pressed along the structural seams. The extrusion injection of the sealant should be continuous and uniform, so that the glue is evenly and continuously extruded in cylindrical shape from the injection gun to prevent the gun from moving too fast to produce bubbles or holes.

When the glue is finished, it should be modified immediately. The usual method is to press the interface out of the sealant out of the interface and to trim the surface of the interface. The sealing surface is formed to meet the design requirements. The sealant is required to apply the width of the glue between the inner and outer seams at 1.5~2cm, and the thickness of the seam is not less than 8mm, inside and outside.

The width of the transverse joint is between 1cm (if there is an exposed iron phenomenon to cover the exposed iron part). After the construction, the surface of the sealant can not have the phenomenon of leakage, lack of glue and obvious pores. All the internal and external parts of the boards must be sealant.

GFS tank for sewage treatment

All the bolts must be sealed with a sealant around the injection site. After 48 hours, the sealant is not completely cured, and the sealing joints will not allow large displacement, otherwise the sealing effect will be affected.