1. Grille

This plan strengthens the pre-treatment and slag removal process by selecting a mechanical grid with a gap of 3mm. The solid waste removed from the production wastewater discharged from the factory through the grid is treated to avoid blocking subsequent treatment equipment and pipelines, and to maintain the water pump unit from wear and tear.

2. Hypoxia conditioning pool

Internally equipped with an underwater agitator for mixing to uniform water quality and avoid sedimentation, sewage treatment, and ensuring that DO in the anoxic tank is ≤ 0.5mg/l. The wastewater treated by the anoxic tank is pumped up to the biological touch oxidation tank for aerobic biochemical treatment.

3. Vertical flow sedimenter

Used to remove insoluble substances and macromolecular organic compounds generated by the reaction in the hydrolysis and acidification conditioning tank.

4. Biological touch oxidation tank

The biological touch oxidation technique involves filling the pool with fillers, immersing all the fillers in wastewater treatment, and flowing through the fillers at a certain flow rate. Fill the filler with biofilm, and through aeration, the oxygen in wastewater and air can be widely touched with the biofilm. With the innovative function of microorganisms on the biofilm, organic pollutants in the wastewater are removed, and the wastewater is purified.

The biological touch oxidation method has a suitable enrichment of microorganisms and a high concentration of microorganisms; The food chain is long, the sludge output value is small, the sludge particles are large, and it is easy to deposit. After sedimentation, the sludge moisture content is low, which is a characteristic. Regarding the operation of industrial wastewater treatment, it has strong adaptability to impact loads. Under intermittent operation conditions, it can still adhere to outstanding treatment functions, with simple operation, convenient operation, and no sludge swelling phenomenon. The biological touch oxidation technology is widely used in daily and urban sewage treatment, as well as industrial wastewater treatment such as petrochemicals, textile printing and dyeing, and food, and has achieved outstanding treatment effects.

5. Secondary sedimentation tank

After biological treatment, the wastewater discharged from the biological touch oxidation tank contains many suspended solids such as aging and falling biofilms. The intention of setting up a sedimentation tank is to separate the sludge from the water and separate the suspended solids from the water. In sludge, rapidly growing facultative bacteria dominate. The sludge in the biological touch oxidation tank has good activity, high concentration, and SVI has always been below 100mg/l, without causing sludge swelling.

6. Aeration system

Two underwater aerators JA-21 are installed to supply gas to the touch oxidation tank. Power: N=0.75KW, oxygen filling capacity: O2=0.35kg/h

7. Sludge system

The sludge from the vertical sedimentation tank and the remaining sludge from the touch oxidation tank are discharged to the sludge storage tank, which is digested and regularly cleaned. The supernatant flows back to the anaerobic conditioning tank.