A treatment system and process for industrial sewage containing heavy metals

Abstract

The invention relates to a processing system and a processing technology for industrial sewage containing heavy metal. The processing system device comprises a reaction system, a later period filtering system, filter presses and a chemical liquid storage tank, wherein the reaction system comprises an air flotation separation tank, a first-level sedimentation tank, a regulation reaction tank, a second-level sedimentation tank and a neutralizing tower in sequence; the later period filtering system comprises a ceramsite activated carbon adsorbent bed, electroosmosis, zwitterion mixed resin and an ultraviolet ray disinfecting tower in sequence; two filter presses are arranged; the chemical liquid storage tank comprises an aluminum carbonate storage tank, a polyaluminum ferric chloride storage tank, a sodium hydroxide storage tank, a poly propanamide storage tank and a hypochlorous storage tank. The processing technology comprises the following steps: sewage collection, reaction between sewage and various liquid storage tank chemical materials, later period filtering and ultraviolet ray disinfection. According to the system, through the set of various devices, the sewage containing heavy metal can be more systematically and comprehensively subjected to decontamination processing.

Description

Technical field [0001] The invention relates to a wastewater treatment system, in particular to a system for treating industrial sewage containing heavy metals, and provides a treatment process. Background technique [0002] Heavy metals refer to metals with a specific gravity of more than 4 or 5, and there are about 45 types. The usual heavy metal pollution mainly refers to the environmental pollution of mercury, lead, cadmium, chromium and arsenic with significant biological toxicity. It also includes heavy metals with certain toxicity such as Zinc, copper, cobalt, nickel, tin, vanadium, etc. Heavy metal wastewater is produced in many production processes in mining and metallurgy, machinery manufacturing, chemical industry, electronics, instrumentation and other industries. This wastewater seriously affects the health and life of children and adults. If the human body takes too much molybdenum, it will Causes gout-like syndrome, joint pain and deformity, kidney damage, growth ...

AI Technical Summary

Problems solved by technology

Since the adsorption capacity is easily affected by environmental factors, microorganisms are selective in the adsorption of heavy metals, and heavy metal wastewater often contains a variety of harmful heavy metals, which affects the function of microorganisms and is limited in application, so further research is needed

[0007] At present, my country's technical problems in the treatment of heavy metal wastewater are as follows: firstly, there are many ways of sewage treatment, and the individual targets are poor.

The water treatment facilities and equipment are huge, and the combined water treatment system is relatively complicated

There are also some sewage treatment due to the imperfect process, which is easy to cause secondary pollution problems, and cannot be reused, resulting in waste of resources

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