Sludge is a by-product of pollution control technology, which is rich in microorganisms, pathogens, viruses, etc., and has strong pollution properties. If the sludge is disposed of improperly, its pollution can spread in a wide range of ways. First of all, the moisture content of the sludge is very high, in addition to a part of the natural evaporation into the air, most will penetrate the surface soil layer, and in the rain and other washing into the surface water system or affect the groundwater, the pollutants in the sludge will be spread along these two ways. Secondly, unsanitary sludge entering farmland and even vegetable fields may directly threaten the human food chain. Finally, the sludge emits a foul odor that may affect a considerable area of the surrounding environment. The gases emitted are highly polluting greenhouse gases.

In addition, the amount of sludge is large, storage and transportation of these sludge requires a large space and a lot of tools, these Spaces and tools may be contaminated, to achieve effective isolation from the rest of the world in contact with the food chain is difficult. Why is sludge agricultural use the best way out? The agricultural use of sludge is the best choice of the final disposal means of sludge, which is not only determined by the organic matter content of sludge, but also by its huge quantity and value-added potential. Soil that has been overfertilized becomes increasingly barren, the virtuous cycle of the land is broken, and soil can only be improved with a large input of organic matter, for which purpose sludge is a cheap and ideal source. Of course, the content of heavy metals in the sludge has an important impact on agricultural use.

Works Chemical recommends that you can first use a sludge conditioner for sludge conditioning treatment, and then filter through the plate and frame filter press, which can effectively reduce the moisture content of the sludge and achieve deep dehydration of the sludge. Sludge conditioner is a chemical agent that can change the surface structure of sludge, reduce the solid surface load of sludge, reduce the specific surface area of sludge and destroy the structure of bacteria.

The main components of sludge conditioner are inorganic compounds, sludge surface structure modifier, degreaser, wall breaking agent, sludge surface treatment agent, sludge stripping agent and so on. The sludge conditioned by the sludge conditioner is injected into the filter chamber of the filter press at a pressure of about 1.0MP, which is conducive to efficient filtration of free water in the sludge. When the chemical conditioning achieves better results, the use of high pressure feeding and high pressure pressing can shorten the time of the entire press section and improve production efficiency. Automatic discharge and backblowing of filter material (filter cloth) are completed at the same time, which can reduce the labor intensity of the controller, and improve the efficiency of the completion of the action, and maintain the effect of the filter cloth to intercept sludge and permeable water.