1. **Easy to cause blockage of downpipes**. Due to the large volume of sewage discharged from stores and the heavy oil pollution, if the store drainage *** use, it will be very easy to cause the problem of clogging of downpipes. Sewage pipe blockage will lead to sewage can not be discharged properly, seriously affecting the normal operation of the store and environmental health.
2. **Different drainage codes and requirements may be involved**. Different stores may have different drainage specifications and requirements. For example, the catering industry and the clothing retail industry may have different wastewater treatment and discharge requirements. If a drainage system is used***, it may need to be designed and constructed according to the codes and requirements of all stores, increasing the difficulty and cost of the project.
3. **May affect store operations and employee health**. If the sewer pipe is clogged, it may be necessary to temporarily shut down the business or clean up the sewage, which not only affects the normal operation of the stores, but also may cause health hazards to employees and customers.
Therefore, when designing and constructing a store, due consideration should be given to the drainage of the store, and as far as possible, the drainage of the store should be avoided*** to minimize the risk of sewerage blockage. If there are special circumstances that require *** use of the drainage system, you should be fully aware of the drainage specifications and requirements for all stores and design and construct them to the highest standards to ensure that the drainage system operates properly.