Recycling process and system for wooden activated carbon industrial wastewater

Abstract

The invention discloses a recycling process and a system for wooden activated carbon industrial wastewater. The method comprises the following steps of: uniformly mixing activated carbon rinsing wastewater, industrial wastewater in an activated carbon workshop and washing water of a scrubber tower and adding lime to neutralize; then, sequentially precipitating, pressure-filtering and precipitating neutralized wastewater and sending the wastewater to a production workshop for water consuming facilities to use; or sequentially precipitating, pressure-filtering, precipitating bio-chemically aerating and precipitating the wastewater and sending the wastewater to the production workshop for water consuming facilities to use or discharge outside so as to recycle the industrial wastewater or reach the standard to discharge the industrial wastewater. Filter mud after pressure filter can be additionally used as fertilizers or building materials and the like, so that product is conveniently arranged, the production cost is lowered and the economic benefit of enterprises is improved. As the wastewater after pressure filter is substantially free from sediments, the phenomenon that sediments in the settling pond is avoided, so that the sedimentation efficiency is improved, the sediment cleaning workload is greatly reduced, and technical reference for expanding the capacity of enterprises can be provided.

Description

technical field [0001] The invention relates to the technical field of waste water treatment for activated carbon production, in particular to a recycling treatment process and system for waste water produced by woody activated carbon. Background technique [0002] In the existing wood activated carbon production process, there are many kinds of activated carbon production wastewater, mainly including: activated carbon rinsing wastewater, scrubber washing water and activated carbon workshop production wastewater (such as workshop ground washing water, cooling water, etc.). The common activated carbon production wastewater treatment system and process flow, the general practice is to inject the rinsing wastewater or workshop production wastewater of each production workshop into the wastewater pool of the factory area together with the primary sedimentation treatment of the washing water of the scrubber , The wastewater is neutralized by lime, and the neutralized wastewater i...

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Problems solved by technology

At the same time, we also saw a few companies involved in the treatment of activated carbon pickling wastewater, such as the Chinese utility model patent No. 200820106241.4 and the patent name "Activated Carbon Pickling Wastewater Treatment Device". Compared with the related facilities, there has been great progress, but it is still too complicated, and the construction investment is increased

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