1. Organic matter

Due to the temperature, the mud in summer is very good, and the mud in winter is very difficult to press, and the organic matter of the sludge is very high. Sludge is bacteria, and their survival depends on feeding nutrients, which is why people usually add sodium acetate, flour, and glucose to the biochemical system. However, after the regular discharge of the sludge, they have no food source, and they will suck the organic matter in the sludge as food. In summer, due to the high temperature, bacteria are relatively more active than in winter. In winter, due to the low temperature, the activity of bacteria is reduced, and the organic matter can not be consumed in large quantities, resulting in high organic matter in sludge. The high organic matter of the sludge will lead to a lot of intracellular water in the sludge.

Second, the drug cost is high

Municipal sludge usually uses lime + ferric chloride, and PAC+PAM is used in some remote areas due to the high transport cost of the agent. Due to the high organic matter, the best effect of these two schemes can only achieve a water content of 65% to 70%. And the amount of mud into the winter will gradually decrease, because of the high organic matter in the winter mud pressure difficulty has increased a lot, many sewage treatment plants in order to make the mud good pressure a little, choose more agents to make the sludge good pressure a little. Often followed by the rise in costs, many municipal sewage treatment plants a ton of dry pharmaceutical costs to go to more than 450, this cost is quite high.

Third, drug selection

Sludge conditioner for this high organic sludge has a relative solution, there have been multiple sewage treatment plant cases, the cost of sludge conditioner from a ton of dry 450 to 300. The daily saving of pharmaceutical costs of the sewage treatment plant reaches thousands, and the cost saved by the sewage treatment plant is profit. So the use of lime and ferric chloride has gradually been replaced by purely organic sludge conditioners. The sludge conditioner can not only reduce the moisture content, reduce the cost, speed up the sludge efficiency, but also can automatically release the non-stick filter cloth.