How to improve the dehydration efficiency of the screw press
Feb 20, 2023
To solve the problem of the dehydration rate of the screw stacker, several factors must be clarified:
1. The dehydration efficiency of the screw stacker is largely due to the problem of flocculants:
We need to make it clear that during the operation of the screw stacker, physical and chemical reactions basically occur. The physical reaction is mainly the extrusion and drainage of sludge and the effect of pressure;
The chemical reaction is mainly the reaction between the flocculant and the chemical components in the sludge. The fine particles are synthesized into a larger volume and aggregated into a mud cake. Among them, the commonly used flocculant is PAM, but the pan flocculant needs to be used in a dehydrator. It has a huge effect, and the effect of directly using it on sewage is not very good.
2. Part of the dehydration efficiency of the screw stacker is due to the manufacturing process:
The manufacturing principle of the screw stacker is well known in the industry, but the manufacturing process of each manufacturer is different. The same type of product may have different dehydration efficiency. This may be related to the helical piece, the pressed plate, and the fixed and fixed rings.
So, for the main flocculant problems, what should we pay attention to?
Pay attention to the nature of the sludge, different sludge, the flocculant to be added must be different; choose the appropriate molecular weight and ion type, many screw-type sludge dewatering machines have poor operating efficiency, and the low degree of mud biscuit is due to the flocculant Due to deviations in type selection, inappropriate dosing amount, poor configuration of flocculant solution and other reasons, the sludge has not been well flocculated, making it difficult to dehydrate the sludge; the flocculant needs to be fully stirred and dissolved, and undissolved lumps and particles.
To sum up, in order to improve the dehydration efficiency of the screw stacker, the choice of flocculant plays a decisive role when the process manufacturing level is similar, and it must be improved and perfected in practice.
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