Pretreatment process for high-oil and high-suspended-matter wastewater

Abstract

The invention relates to a pretreatment process for high-oil high-suspended-matter wastewater. A raw water tank, a water inlet pump, a reaction tank, a pre-precipitation tank, a middle storage tank, a CTUF membrane system, a flushing pump, a backwashing pump, a CTUF water producing tank, a pH adjusting tank, a sewage pump, a sludge thickening tank, a filter pressing pump and a plate-and-frame filter press are included. The treatment process for the oil-containing high-suspended-matter wastewater has a good sedimentation effect without a sedimentation tank, and supernate obtained after sludge after reaction is settled can enter the CTUF membrane system; and the CTUF membrane system can effectively remove high suspended matters and macromolecular colloids in wastewater, can continuously operate under the condition of high pH, and can normally work under the condition that the pH is 1-12, so that calcium, magnesium, silicon, strontium, barium and other metal ion components with scaling tendency can be effectively removed.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a pretreatment process for high-oil and high-suspended-solid waste water. Background technique [0002] In recent years, the rapid development of my country's industrial technology has driven economic growth, and the amount of industrial sewage produced in this process is also increasing year by year. Compared with foreign developed countries, my country's sewage treatment rate is not high, and the process needs to be improved. The management is still relatively backward, and there are many problems such as the utilization rate of effective investment in the construction of sewage treatment plants and the low rate of treated water reaching the standard. [0003] If the oily wastewater with high suspended solids is directly discharged, it will have a bad impact on people's life and production: (1) cause waste of water resources; (2) cause serious pollution of surface and groundwater...

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