The discharge indexes of COD, ammonia nitrogen, total nitrogen and total phosphorus in sewage have been improved. To meet these requirements, it is necessary to redesign the sewage treatment facilities, make as few changes as possible, improve the sewage treatment capacity, and make the effluent meet the standard requirements. For the reconstruction and expansion project, Youpu reminds you that you also need to know the following information:
1, actual water quantity, peak coefficient, the relationship between upgrading of sewage treatment plant and original sewage treatment plant, and the possibility of communication facilities.
2. Engineering conditions for upgrading and reconstruction of sewage treatment plants.
3. Collect the sewage collection range and water source characteristics of the built sewage plant, and analyze the possible differences between the collection range and the influent quality after reconstruction and expansion.
4. Collect the construction drawings, completion data, technical renovation records, equipment supplier data, technical parameters, operation records, equipment maintenance records, feasibility study, environmental assessment and various related technical reports of the technology, structure, power supply, HVAC, fire protection, water supply and drainage and related facilities of the built sewage plant and integrated prefabricated pumping station.
5. Collect operation data (daily water quantity, water quality, water temperature and water quality of each unit in 1 ~ 2 years), industrial water composition, water inflow, sample and test, and compare with online data.
6. Investigate the design and operation problems of existing sewage treatment plants on the spot, and provide reference for reconstruction and expansion.
7. Understand the investment (final settlement price) and operating expenses of the built sewage plant: the consumption and unit price of possible expenses such as water, electricity, chemicals, labor, steam, sludge disposal and sludge transportation, and collect the usage of chemicals, sludge removal records and electricity load.
8. Land for upgrading and expansion of sewage treatment plants.
9. The capacity of the sewage treatment plant has been built, whether it is a primary load or a secondary load, and whether it is the capacity of double circuits and high-voltage cabinets.