The filter press is a kind of equipment widely used in sewage treatment and solid-liquid separation, but in the actual use process, sometimes the mud pressed out by the filter press is too thin. This not only affects the effectiveness of the treatment, but can also have a negative impact on the environment. This article will analyze the reasons for the mud pressed out by the filter press to be too thin, and propose corresponding solutions.
1. Cause analysis.
1.Insufficient sludge concentration: When the sludge concentration is too low, the solid matter content in the sludge is less, resulting in the formation of mud cake is not firm and easy to break during the filter press, so that the sludge pressed out by the filter press is too thin.
2.Influent water quality problem: If the organic matter content in the sewage is high, the microorganisms in the sludge will multiply too much, causing the sludge to expand, which will affect the filtration effect. In addition, too much dissolved organic matter can also cause the slurry to become too thin.
3.Improper use of chemicals: In some cases, chemicals need to be added in order to improve the flocculation effect of the sludge. If the agent is used improperly or excessively, it can cause the slurry to be too thick or too thin.
4.Equipment failure: Some faults of the filter press may also cause the mud to be too thin from the filter. For example, a broken filter cloth or a clogged filter plate can affect the effectiveness of the filter press.
Second, the solution.
1.Adjust sludge concentration: according to the actual situation, increase the sludge concentration appropriately to improve the firmness of the mud cake. This can be achieved by increasing the sludge age of the bioreactor or by reducing the amount of sludge discharged.
2.Control of influent water quality: Pre-treatment of wastewater to reduce the content of organic matter and dissolved organic matter. For example, biological or chemical methods can be used to remove organic matter, or to increase the running time of the sedimentation tank.
3.Rational use of agents: according to the actual situation, select the appropriate flocculant, and add it according to the dosage recommended by the manufacturer. At the same time, the use of the agent is regularly checked and adjusted.
4.Equipment maintenance and overhaul: Regularly inspect and maintain the filter press to ensure the normal operation of the equipment. For example, check whether the filter cloth is damaged or blocked, and replace or clean the filter cloth in time; Check whether the filter plate is blocked or loose, and clean or tighten the filter plate in time.
III. Conclusion. The mud pressed out by the filter press is too thin and can be caused by a variety of reasons. In order to solve this problem, it is necessary to comprehensively consider the quality of the inlet and outlet water, the concentration of sludge, the use of chemicals, and equipment failure. By adjusting the process parameters, strengthening equipment maintenance and rational use of chemicals, the effect of filter pressing can be effectively improved, the firmness of the mud cake can be improved, and the adverse impact on the environment can be reduced. In practical applications, corresponding solutions should be taken according to the specific situation to ensure that the filter press can operate normally and achieve the ideal treatment effect.