Food wastewater treatment equipment manufacturer

Food wastewater treatment equipment manufacturer

Main pollutants in food wastewater

(1) Solid substances floating in wastewater, such as vegetable leaves, fruit peels, minced meat, poultry feathers, etc;

(2) Substances suspended in wastewater such as oil, protein, starch, colloidal substances, etc;

(3) Acid, alkali, salt, sugar, etc. dissolved in wastewater:

(4) Mud, sand, and other mechanical materials carried by raw materials;

Food industry wastewater contains high levels of organic matter and suspended solids, is easily perishable, and generally has high toxicity. Its main harm is to cause eutrophication of water bodies, leading to the death of aquatic animals and fish, promoting the production of foul odors from sediment at the bottom of the water, deteriorating water quality, and polluting the environment.

Modern wastewater treatment technologies can be divided into three categories: physical treatment methods, chemical treatment methods, and biochemical treatment methods. Physical processing methods include: precipitation method, filtration method, centrifugal separation method, flotation method; Chemical treatment methods include coagulation, neutralization, oxidation-reduction, electrolysis, extraction, stripping, adsorption, electrodialysis, and reverse osmosis; Biochemical treatment methods: activated sludge method, biofilm method, oxidation pond method, land treatment method. In addition, there are also some new technologies, such as enzymatic hydrolysis, efficient degradation of bacteria, acoustic wave technology, magnetic separation method, critical water oxidation method, electro biofilm method, etc.

Food wastewater treatment equipment manufacturerProcess flow description:

(1) Preprocessing

The sewage is discharged from the sedimentation tank and combined with other domestic sewage before entering the sewage treatment plant. The grid tank is used to remove larger impurities and floating debris, and the sewage flows into the Z-regulating tank. This can regulate the water volume and balance the water source. The regulating pool is buried underground and can be covered with grass. The regulated sewage is pumped up to the Z biochemical tank using a sewage pump.

(2) Aerobic tank

In the aerobic zone, the vitality of polyphosphate accumulating bacteria is restored and the required amount of phosphorus for growth is stored in the form of polyphosphate. Energy is generated through PHB/PHV oxidation metabolism for phosphorus absorption and polyphosphate synthesis. The energy is captured and stored in the form of polyphosphate high-energy bonds, and phosphate is removed from the liquid phase. The generated phosphorus rich sludge will be released in the form of residual sludge in the subsequent operating units, thereby removing phosphorus from the system. Throughout the entire biological phosphorus removal process, it manifests as the synthesis and decomposition of PHB.

(3) Sedimentation tank

A structure that separates the sludge carried by the effluent from the aerobic tank from the clean water. We use a horizontal sedimentation tank here.

(4) Sludge treatment system

The sludge is subjected to aerobic digestion, and the digested and stabilized sludge is regularly transported by fecal suction trucks.

structure of the equipment

1. Packing material

The filler is composed of plastic and resin, with a scientific structure, a specific surface area of 1000m2/m3, a light density of 0.97g/cm3, no clogging, and easy film formation.

This packing material is a spherical packing material composed of slender spheres, a network shell, and a through porous column. It only needs to be directly added, does not need to be fixed, and has good removal efficiency for difficult to degrade substances, nitrogen, phosphorus, and sulfide removal, and residual sludge production.

2. Expose

Adopting a corridor style exposure, the exposure pipe is set in the middle of the pool. During exposure, air energy drives water to circulate to both sides, forming two circulation loops. The tank is circular, so there are blind spots. Its hole is small, not easy to block, and easy to adjust and replace. The oxygen transfer rate is greater than 18%, which is 2-3 times higher than that of a typical exposure head.

3. Pipeline

All equipment pipelines are made of UPVC pipes, and the connections between pipelines are bonded with UPVC adhesive.

4. Grille

The grille is made of stainless steel with a spacing of 2mm between bars, which is not easily blocked.

5. Fan, control cabinet

The fan and distribution cabinet are both installed in the fan room, with two fans arranged alternately in the fan room. The fan room is located above the ground and adopts a sound insulation and rain proof structure.

6. Equipment supporting water pump

The water pump is an RBJK submersible sewage pump, which efficiently passes solid particles with a diameter of 30-80 millimeters through sewage and blockage. The tearing mechanism of the water pump can tear long fibrous materials, and a filter screen needs to be added to the water pump.

The equipment is equipped with two water pumps, one of which is standby. The water pump is equipped with electrical protection switches, float switches, and automatic coupling devices.