A marble wastewater processing system

Abstract

The invention discloses a marble wastewater processing system, and belongs to the technical field of industrial wastewater purification and treatment. The system comprises a wastewater collection unit, an adjusting unit, a wastewater lifting pump, a layered vertical settling unit, a stone sand dehydrating unit, a sludge dehydrating unit, a stone debris dehydrating unit, and a clean water tank. Marble slag-containing wastewater is subjected to a multi-polarization treatment; the obtained slag powder with different particle sizes can be directly used as a raw material to produce multiple products, the additional value of marble is increased; the purified water can be directly used in marble processing; the clean water quality can meet the requirements of marble processing; raw materials are saved, the environment is protected, successful production can be ensured, and the product quality is improved.

Description

technical field [0001] The invention belongs to the technical field of purification and treatment of industrial waste water, relates to the treatment technology of stone processing waste water, and in particular relates to a marble waste water processing and treatment system. Background technique [0002] The rapid development of my country's economy has promoted the rapid development of the stone industry, and a number of large and small stone industry clusters or stone industry zones and industrial towns have emerged across the country. A large amount of stone powder, gravel and waste water produced in the process of stone processing have become a new source of pollution. The wanton dumping of stone powder and gravel in production has caused a large number of fields to be covered by stone powder, a large number of farmland cannot be cultivated, and trees are like snow. As if, after the wind blows, the dust is flying, the stone powder is blown up with the wind, and the poll...

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Problems solved by technology

[0004] The current stone processing plants are generally small-scale. In order to save money, conventional coagulants are generally used for wastewater treatment. Conventional iron salt and aluminum salt coagulants are not very effective in the treatment of stone processing wastewater. Iron salt In the process of use, the effluent is often colored, resulting in the chromaticity of the treated water not up to the standard; the alum flowers generated by the aluminum salt are not dense, the sinking speed is slow, and the coagulation effect is not good. Simple wastewater treatment directly discharged into the river will cause environmental pollution. Pollution, although the settlement of stone powder is a physical change, after being discharged into ponds, rivers and reservoirs, the bottom of the water will be tightly sealed after natural precipitation, causing serious pollution of the water body, resulting in a considerable part of the groundwater being undrinkable. During the stone production process Coolant will be used. The main components of the coolant are: resin acids and their saponified substances, unsaturated fatty acids and their saponified substances, etc. These substances have a strong chelating and complexing ability, and can remove tiny particles in the stone powder. Fixed, so that it can maintain a colloidal state for a long time, causing pollution to the water body. For the turbidity pollution caused by suspended solids, the current traditional process adopts the method of coagulation-sedimentation, but due to the chelation complex in this type of wastewater Coolant with strong synergistic ability, it is difficult to achieve the effect by traditional process

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