Treatment system for high-carbon-and-nitrogen wastewater

Abstract

The invention discloses a treatment system for high-carbon-and-nitrogen wastewater. The treatment system for the high-carbon-and-nitrogen wastewater comprises a regulating pool, a lifting pump, a coagulative precipitation pool, a hydrolysis-acidification pool, another lifting pump, an IC (internal circulation) reactor, a two-stage contact oxidation pool, a secondary precipitation pool, a sludge concentration tank, a mud pump, a plate-and-frame filter press, a sludge reflux pump, a sludge outward transport cart, a reflux pump and a fan room, wherein the high-carbon-and-nitrogen wastewater passes through the coagulative precipitation pool to be subjected to pretreatment, so as to decrease the concentration of a water quality, and to reduce the treatment burdens of subsequent units; the hydrolysis-acidification pool intercepts non-dissolved-state organic matters in the wastewater and gradually converts the non-dissolved-state organic matters into dissolved-state organic matters, macromolecular sSubstances are converted into micromolecular substances, so that the biodegradability and the degradation speed of the wastewater are obviously improved, and the subsequent biological treatment is facilitated. The treatment capacity to a high-concentration COD (chemical oxygen demand) and the advantage of converting organic nitrogen into ammonia nitrogen are effectively improved by utilizing a novel anaerobic reactor IC reactor; the two-stage contact oxidation pool further degrades the COD and converts the ammonia nitrogen, the nitrogen removal by denitrification is realized, and discharge water is enabled to be up to a state-specified discharge standard.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a high-carbon-nitrogen wastewater treatment process system. Background technique [0002] High-carbon-nitrogen wastewater is generally produced in the production process of biological companies. The salient feature of this type of wastewater is the high concentration of COD and nitrogen-containing substances. It is difficult for general biological treatment processes to meet the standards. Fenton or stripping methods are used to remove the waste water. Ammonia nitrogen is difficult to achieve, resulting in wastewater discharge that cannot meet the takeover standards of urban sewage treatment plants. Therefore, a complete and effective wastewater treatment process is needed to solve the problem of high carbon and nitrogen wastewater treatment and ensure that the discharge standards are met. Contents of the invention [0003] The purpose of the present invention is to provide...

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Problems solved by technology

[0002] High-carbon-nitrogen wastewater is generally produced in the production process of biological companies. The salient feature of this type of wastewater is the high concentration of COD and nitrogen-containing substances. It is difficult for general biological treatment processes to meet the standards. Fenton or stripping methods are used to remove the waste water. Ammonia nitrogen is difficult to achieve, resulting in wastewater discharge that cannot meet the takeover standards of urban sewage treatment plants

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