Paper Making Wastewater Treatment System Residential Areas Restaurants

Papermaking Wastewater Treatment System Residential Areas Restaurants

Process description:

The wastewater is first collected by the collecting basin, and then the coarse grid is used to intercept the suspended solids such as paper scraps, foam paper, plastic and large particles of impurities in the water, and then passed through the lifting pump into the fine grid to further remove fine particulate impurities and then enter the grit chamber. , remove the inorganic particles with a higher density in the water.

The effluent from the grit chamber enters the SBR pool. At this stage, the nutrients and nitrogen and phosphorus are removed. The night passes through the blower room and enters the flocculation reaction tank. The chemical flocculation and sedimentation removes the fine suspended matter floating matter and colloidal substances in the water. The pool is temporarily stored and finally disinfected by the UV disinfection tank. After the test is completed, it can be reused or discharged.

On the other hand, the excess sludge from the SBR pool and the sediment after the flocculation tank are collected by the mud collection well, then It enters the sludge concentration workshop for concentration, and then is sent to the sludge dewatering workshop for dehydration to obtain mud cake, which is processed regularly.

Background:

The paper industry uses wood, straw, reed, rags, etc. as raw materials, and the cellulose is separated by high-temperature and high-pressure cooking to make pulp. In the production process, the non-cellulose fraction that is finally discharged from the raw material is called papermaking black liquor. The black liquor contains lignin, cellulose, volatile organic acids, etc., which is odorous and highly polluting. The concentration of pollutants in black water is very high, and the BOD is as high as 5-40 g/L, which contains a large amount of fibers, inorganic salts and pigments. The papermaking wastewater discharged from the bleaching process also contains a large amount of acid and alkali substances.

Such wastewater treatment is very difficult, and it is difficult to meet emission standards by simple physical or biochemical treatment. Our company adopts high-efficiency air flotation + UASB anaerobic reactor + EGSB + contact oxidation process to treat papermaking wastewater, which can make the effluent discharge to the standard for a long time.

1) Equipment Name: Papermaking Wastewater Treatment Equipment

2) Applied occasions: Suitable for residential areas, restaurants, hotels, nursing homes, schools, mines, food and beverage plants, breeding slaughterhouses, factory domestic sewage sources, and similar industrial sewage sources, various industrial organic wastewater similar to domestic sewage.

3) Equipment picture:

Process flow chart:

Installation site picture (engineering case):

Advantages:

The whole set of equipment can be buried in the ground and does not occupy the surface area; the generated hum is low, the odor is small, the impact on the surrounding environment is small, the purification degree is high, the whole system sludge is produced in a small amount, the automation degree is high, the management is convenient, no Need special management; stable technology, easy maintenance, low energy consumption, saving operating costs.

5) Supply (cooperation) method and delivery cycle

1: Determine the usage scenario.

2: Analyze the quality of contaminated water (if necessary, do laboratory analysis)

3: Determine the treatment process.

4: The supplier forecasts the price duration and governance objectives of the equipment or system.

5: The supplier and the buyer negotiate the price schedule and the governance objectives, negotiate and agree to sign the contract and pay the supplier prepayment.

6: After the equipment is produced and paid by the buyer and its agent, the payment will be made.

7: The supplier rushed to the place of use of the buyer for installation instructions and commissioning.

8: System training for equipment use and maintenance