Mixed sewage short-range treatment system and method

Abstract

The invention discloses a mixed sewage short-range treatment system, which comprises a regulating pool, a reaction tank, a sludge tank and a clean water pool. A liquid inlet of the regulating pool isconnected with a to-be-treated sewage pipeline which includes filter press manufacturing electro-welding workshop sewage and complete machine water pressure testing workshop sewage, and a liquid outlet of the regulating pool is connected with a liquid inlet of the reaction tank. An agent inlet of the reaction tank is used for adding agents including waste acids, quick lime and nonionic polyacrylamide, a sludge outlet of the reaction tank is connected with the sludge tank, and a clean water outlet of the reaction tank is connected with the clean water pool. The invention further discloses a mixed sewage short-range treatment method. The system and the method have advantages that mixed sewage of a filter press manufacturing electro-welding workshop sewage and a complete machine water pressure testing workshop can be treated at the same time, only a few types of added agents including waste acids, calcium oxide and NPAM are required, low agent feeding quantity is realized, and treated clean water can be recycled; in addition, due to use of the waste acids, waste recycling is realized.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a mixed sewage short-range treatment system and method. Background technique [0002] The manufacture of filter press can be divided into process rooms such as filter cloth, injection molding, pressing, electric welding, and hydraulic test of the whole machine. Some pollutants will inevitably be produced in the production process of each process room. Sewage generated during hydrostatic testing is treated. [0003] The main components of welding rods are metal oxides, among which the oxides of iron salts are the main ones. During the high-temperature welding process, a large amount of steam will be generated, and the steam will be rapidly oxidized and condensed in the air to form particles of metal and its compounds. The particles with a diameter of less than 0.1μ are smoke, and the diameter is between 0.1μ and 1μ. particles are called dust. Part of the soot will fall...

AI Technical Summary

Problems solved by technology

[0005] At present, the machinery manufacturing workshop mainly has relevant treatment measures for emulsified sewage, but there are few cases of combined treatment of electroplating wastewater and oily wastewater containing various states in the welding workshop

Moreover, the main disadvantages of similar chemical methods are: there are many types of agents added, and the dosage is relatively large.

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