If the water quality of Shandong integrated domestic sewage treatment equipment is not good, there are actually many reasons. Generally, the factors that affect the integrated domestic sewage treatment equipment include excessive water inflow, wrong debugging of equipment parameters, imbalance of microbial strains, excessive excess sludge, low temperature and so on. Among them, the problems with great influence and frequent occurrence are as follows:

1. The influent of equipment exceeds the standard

In most sewage treatment projects, the sewage needs to pass through septic tanks to remove large particles of impurities before entering the equipment. If the grid density is too high in the front-end pretreatment stage, it is likely that some foreign objects will enter the equipment, which will lead to the blockage of the integrated domestic sewage treatment equipment. In addition, some catering domestic wastewater contains a lot of grease, which will float or adhere to the sewage treatment equipment pipeline if there is no grease trap facility. Eventually, the purification rate of the equipment is reduced and the water quality can not reach the standard stably.

2. Equipment parameter debugging

The integrated domestic sewage treatment equipment adopts biological treatment process, and the operation parameters of aeration equipment need to be adjusted according to the specific conditions of the project. If the parameter setting is unreasonable, the dissolved oxygen in the water may be insufficient, resulting in the water flow residence time not meeting the requirements. Therefore, the operation parameters of the equipment need to be set scientifically and standardized by professional debugging engineers, so that the domestic sewage can be purified and discharged to the standard.

3. Residual sludge

Because the integrated domestic sewage treatment equipment mainly uses the growth and reproduction of bacteria to purify pollutants, almost all the equipment will deposit a layer of residual sludge in the equipment after running for several months or half a year. If the sludge is not cleaned in time, the water quality of the equipment will be turbid by visual inspection, and it will not meet the discharge standard. Therefore, in the operation and maintenance management of integrated domestic sewage treatment equipment, it is necessary to clean the sludge regularly.