Treatment of food processing wastewater by multi plate screw press

 

Food processing mainly includes sugar making, brewing, meat, dairy processing and other production processes. The wastewater discharged contains organic matter, which has strong oxygen consumption, and a large number of suspended solids are discharged with the wastewater. The wastewater from animal food processing also contains animal excreta, blood, fur, oil, etc., and may contain bacteria.

Multi plate screw press has been widely used in various sewage treatment processes for many years. This product has a long service life, small floor space, convenient maintenance, low operating cost, and can realize 24-hour automatic operation. At the same time, the low concentration treatment characteristics of the equipment reduce the laziness of the sludge storage tank (thickener) to a certain extent.

The food processing discharge is rich in organic matter, with obvious oxygen consumption characteristics and acid bias. It can be treated by constructing a closed sewage tank for fermentation. It can be pumped out by a customized sludge pump and added with appropriate agents, adjusted to neutral, flocculate, and then enter the multi plate screw press to achieve the purpose of sludge dewatering and reduction. The filtrate and sludge can be further treated according to local discharge standards.

Due to the diversity of foods, pretreatment can also be added in the early stage according to the characteristics of some foods, and then entered into multi plate screw press, which can achieve a more ideal treatment effect.

Advantages of multi plate screw press in food processing industry

Practicability: Multi plate screw press uses spiral shaft and annular plate as the main body of dehydration, which can effectively separate sludge and sewage during operation, and can realize automatic operation all day long to release labor force without supervision.

Economy: Multi plate screw press is made of 304 stainless steel, which has a long service life. The standard operation can realize 3-5 years without replacing any accessories, and the equipment operates at low speed with low power consumption and low operating cost.

Tightness: the equipment adopts semi closed and fully closed operation to reduce secondary environmental pollution during operation. The spray equipment is built-in and has low water consumption. The operation of the equipment before and after startup can effectively solve the stability of subsequent maintenance.

Why does the food processing industry use multi plate screw press?

The sludge produced by the food factory has high organic content, high viscosity, high oil content and difficult treatment. If the traditional plate and frame filter press or belt filter press is selected, it is not only easy to form mud cake, but also easy to block the filter cloth, which needs to be cleaned in time and is inefficient. And the cost of workers is high.

Blocking can also be avoided in the process of using multi plate screw press. In fact, the blockage problem is quite common when the equipment is used to treat sewage, especially when the equipment is used for sewage treatment for a long time, it is easy to cause blockage due to the accumulation of impurities.

Multi plate screw press adopts the self-cleaning function to avoid the accumulation of impurities and make the equipment run more smoothly.

 

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